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Videnskabelige artikler - Sol-Jord fysik

2014

 

2013

Saiz, E., Cerrato, Y., Cid, C., Dobrica, V., Hejda, P., Nenovski, P., Stauning, P. et al. (2013): Geomagnetic response to solar and interplanetary disturbances, J. Space Weather Space Clim. 3, A26. DOI: 10.1051/swsc/2013048

Stauning, Peter (2013): Power grid disturbances and polar cap index during geomagnetic storms. J. Space Weather Space Clim., 3 A22. Published online: 2013-06-25.
DOI: http://dx.doi.org/10.1051/swsc/2013044
Abstract Full HTML PDF (4.404 MB) References

Stauning, P. (2013): The Polar Cap index: A critical review of methods and a new approach, J. Geophys. Res., Space Physics, 118, 5021–5038, doi:10.1002/jgra.50462.
Available (free) at http://onlinelibrary.wiley.com/doi/10.1002/jgra.50462/pdf

Stauning, P. (2013): Comments on quiet daily variation derivation in "Identification of the IMF sector structure in near-real time by ground magnetic data" by Janzhura and Troshichev (2011), Ann. Geophys., 31, 1221-1225.
doi:10.5194/angeo-31-1221-2013
Available at: http://www.ann-geophys.net/31/1221/2013/

 

 

2012

Moss, K. and P. Stauning: Sophus Tromholt: Skæbnen og Nordlyset er jo lige uransagelige, 208 s., ISBN 978-87-995114-2-6, udg. af Forlaget Epsilon (www.forlagetepsilon.dk) i samarbejde med DMI, 2012.

Moss, K. and P.Stauning: Sophus Peter Tromholt: an outstanding pioneer in auroral research, Hist. Geo Space. Sci., 3, 53-72, doi:10.5194/hgss-3-53-2012, www.hist-geo-space-sci.net/3/53/2012/, 2012.

Stauning, Peter: (2012). The Polar Cap PC Indices: Relations to Solar Wind and Global Disturbances, Exploring the Solar Wind, Marian Lazar (Ed.), ISBN: 978-953-51-0339-4, InTech, DOI: 10.5772/37359. Available from: www.intechopen.com/books/exploring-the-solar-wind/the-polar-cap-pc-indices-relations-to-solar-wind-and-global-disturbances, 2012.

2011

Stauning, P. "Determination of quiet daily geomagnetic variations for polar regions", J. Atm. Solar-Terr. Phys. 73, 2314-2330, doi:10.1016/j.jastp.201107.004.

Stauning, P. "Solar activity-climate relations: A different approach", J. Atm. Solar-Terr. Phys. 73, 14 pp., doi:10.1016/j.jastp.2011.06.011.

Stauning, P. "Danish auroral science history", Hist. Geo. Space Sci. 2, 1-28, doi:10.5194/hgss-2-1-2011.

Stauning, P. "Comment on “The PC index:review of methods by McCready and Menvielle", Ann. Geophys. 29, 1137-1146, doi:105194/angeo-29-1137-2011.

Troschichev, O., P. Stuning, K. Liou, and G. Reeves: Saw-tooth substorms: Inconsistency of repetitive bay-like magnetic disturbances with behavior of aurora. Advances in Space Research, 47, 702-709, 2011.

 

2008

Stauning, P. and O. A. Troshichev, Polar Cap convection and PC index during sudden enhancements in solar wind dynamic pressure, J. Geophys. Res., 113, 2008. doi:10.1029/2007JA012783.

Stauning, P., O. A. Troshichev, and A. S. Janzhura, The polar cap (PC) index. Relations to solar wind parameters and global magnetic activity level, J. Atm. Solar-Terr. Phys., 2008. doi:10.1016/j.jastp.2008.09.028.

2007

Anderson, B.J., H. Korth, and P. Stauning, Statistical Birkeland current distribution from magnetic field observations by the Iridium constellation and Oersted, Ann. Geophysicae, AG/2006321, 2007.

Ford, S. F., F. W. Menk, P. Stauning, K. Yumoto, and E. Zesta, A satellite-ground study of low-latitude Pi2 pulsations, Ann. Geophysicae, , 2007.

Han, D.-S., T. Araki, H-G. Yang, Z-T. Chen, T. Iyemori,and P. Stauning, Comparative study of Storm Sudden Commencements (SCs) between Oersted and ground observations at different local times. J. Geophys. Res., 112, 2007.

Han, D.-S., H-G. Yang, Z-T. Chen, T. Iyemori, and P. Stauning, Detailed analysis on a preliminary reverse impulse (PRI) event observed above the dayside ionosphere near the dip equator, J. Geophys. Res., 112, 2007.

Janzhura, A., O.Troshichev, P.Stauning, Unified PC indices: relation to magnetic disturbances in the auroral zone, J. Geophys. Res., 112, doi:10.1029/JA012132, 2007.

Palmroth, M., N. Partamies, J. Polvi, T.I. Pulkkinen, D.J. McComas, J. Barnes, P. Stauning, C.W. Smith, H.J. Singer, and R. Vainio, Solar wind - magnetosphere coupling efficiency for solar wind pressure impulses, Geophys. Res. Lett., 34, L11101, doi:10.1029/2006GL029059, 2007.

Stauning, P., A new index for the interplanetary merging electric field and the global geomagnetic activity: Application of the unified Polar Cap (PCN and PCS) indices, AGU Space Weather, 5, S09001, doi:10.1029/2007SW000311, 2007

Stauning, P. and O. A. Troshichev, Polar Cap convection and PC index during sudden enhancements in solar wind dynamic pressure, J. Geophys. Res., 2007JA012783, 2007.

Troshichev, O., A. Janzhura, and P. Stauning, Magnetic activity in the polar caps: Relation to sudden changes in the solar wind dynamic pressure, J. Geophys. Res., vol. 112, A11202, doi: 10.1029/2007JA012369, 2007.

Troshichev, O., A. Janzhura, and P. Stauning, Reply to Comment of R.Lukianova on paper “The unified PCN and PCS indices: method of calculation, physical sense, dependence on the IMF azimuthal and northward components” by O.Troshichev, A.Janzhura and P.Stauning, J. Geophys. Res., 112, 2007.

Tsunoda, R., P. Stauning, and J. K. Olesen, On the electrodynamical measurements in the polar ionosphere with a monostatic incoherent-scatter radar, Radio Science, 42, RS2013, doi:10.1029/2006RS003471, 2007.

2006

M. Förster, V. M. Mishin, P. Stauning, J. Watermann, T.I. Saifudinova, and A.D. Bazarzhapov, Plasma convection in the Earth's magnetosphere and ionosphere during substorms, Adv. Space Res., 38, 1750, 2006.

O. Troshichev, A. Janzhura, and P. Stauning, Unified PCN and PCS indices: Method of calculation, physical sense, and dependence on the IMF azimuthal and northward components, J. Geophys. Res., vol. 111, A05208, doi: 10.1029/2005JA011402, 2006.

Watermann, J., O. Rasmussen, P. Stauning, and H. Gleisner, Temporal versus spatial geomagnetic variations along the west coast of Greenland, Adv. Space Res., 37, 1163-1168, 2006.

2005

Cabrera, J., M. Cyamukungu, P. Stauning, A. Leonov, P. Leleux, J. Lemaire, and G. Gregoire, Fluxes of energetic protons and electrons measured on board the Oersted satellite, Ann. Geophysicae, 23, 2975-2982, 2005.

Draper, N.C., M. Lester, S.W.H. Cowley, P J.A. Wild, S.E. Milan, G. Provan,A. Grocott, A.N. Fazakerley, A. Lahiff, J.A. Davies, J.-M. Bosqued, J.P. Dewhurst,R. Nakamura, C.J. Owen, J. Watermann, M.G. Henderson, H.J. Singer, E. Donovan,Cluster magnetotail observations of a tailward-travelling plasmoid atsubstorm expansion phase onset and field aligned currents in the plasmasheet boundary layer, Ann. Geophys., 23(12), 3667-3683, 2005

Gleisner, H., et al., Solar signals in tropospheric re-analysis data: Comparing NCEP/NCAR and ERA40, Journal of Atmospheric and Solar-Terrestrial Physics, 67, 785-791, 2005.

Gleisner, H., O. Rasmussen, and J.F. Watermann, Large-magnitude geomagnetic disturbances in the North Sea region:Statistics, causes, and forecasting, Adv. Space Res., Doi: 10.1016/j.asr. 2005.04.082, 2005.

Gleisner, H. and J. Watermann, Concepts of medium-range (1-3 days) geomagnetic forecasting, Adv. Space Res., doi:10.1016/j.asr.2005.10.010, 2005

Oyama, S., B.J. Watkins, S. Maeda, J. Watermann, Application of a new beam configuration to estimate lower thermospheric vertical velocities at high latitudes with monostatic incoherent scatter radars, Radio Science, Vol. 40, RS4005, doi:10.1029/2004RS003205, 2005

Palmroth, M. , P. Janhunen, T.I. Pulkkinen, A. Aksnes, G. Lu, N. Ostgaard, J. Watermann, G.D. Reeves, and G.A. Germany, Assessment of ionospheric Joule heating by GUMICS-4 MHD simulation,AMIE, and satellite-based statistics: Towards a synthesis,Ann. Geophys., 23, 2051-2068, 2005.

Stauning, P., F. Christiansen, J. Watermann, and O. Rasmussen, On the modelling of field-aligned currents from magnetic observations by polar orbiting satellites, in: Earth Observation with CHAMP, Results from Three Years in Orbit, C. Reigber et al., Eds., p. 371, Springer-Verlag, 2005.

Stauning, P., F. Christiansen, J. Watermann, and O. Rasmussen, Detection of intense fine-scale field-aligned current structures in the cusp region from the Ørsted satellite, in: Earth Observation with CHAMP, Results from Three Years in Orbit, C. Reigber et al., Eds., p. 381 Springer-Verlag, 2005.

Watermann, J., O. Rasmussen, P. Stauning and H. Gleisner,Temporal versus spatial geomagnetic variations along the west coast of Greenland,Adv. Space Res., doi:10.1016/j.asr.2005.08.019, 2005.

Watermann, J., H. Lühr, K. Schlegel, P. Stauning, J. P. Thayer, F. Christiansen, and P. T. Newell, The low-altitude cusp: Multi-point observations during the February 2002 CIRCUS campaign, in: Earth Observations with CHAMP, Results from three years in orbit, C. Reigber, H. Luehr, P. Schwintzer, J. Wickert (eds.), pp. 375-380, Springer-Verlag, Berlin, 2005.

2004

Han, D., T. Iyemori, M. Nose, H. McCreadie, Y. Gao, F. Yang, S. Yamashita, and P. Stauning, A comparative analysis of low-latitude Pi2 pulsations observed by Oersted and ground stations, J. Geophys. Res., 109, A10209,doi:10.1029/2004JA010576, 2004.

Hosokawa, K., S. Yamasita, P. Stauning, N. Sato, A.S. Yukimatu, and T. Iyemori, Origin of the SuperDARN broad Doppler spectra: First observational evidence from Oersted satellite magnetometer, accepted for publication in Annales Geophysicae 22, pp. 159-168, 2004.

Moretto, T., D.G. Sibeck and J. Watermann, "Occurrence statistics of magnetic impulsive events", Annales Geophysicae, Vol. 22, 585-602, 2004.

Watermann, J., H. Lühr, K. Schlegel, P. Stauning, J.P. Thayer, F. Christiansen, and P.T. Newell, The low-altitude cusp: Multi-point observations during the February 2002 SIRCUS campaign in: Earth Observation with CHAMP, Results from Three Years in Orbit, C. Reigber et al., Eds., p. 375, Springer-Verlag, 2004.

2003

Christensen, T., N. Østergaard, T.J. Rosenberg, D.L. Detrick, G.A. Germany, and P. Stauning, Conjugate High-Intensity Energetic Electron Precipitation at High Latitude, Annales Geophysicae, 21, 1443-1455, 2003.

Farrugia, C.J., F.T. Gratton, R.B. Torbert, L. Bender, G. Gnavi, K.W. Ogilvie, N.V. Erkaev, R.P. Lepping, and P. Stauning, On the dependence of dayside Kelvin-Helmholtz activity on IMF orientation, Adv. Space Res., 31, 1105-1110, 2003.

Gleisner, H., and P. Thejll, Patterns of tropospheric response to solar variability, Geophysical Research Letters, 30, doi:10.129/2003GL017129, 2003.

Huang, C.-S., J. C. Foster, G. D. Reeves, J. Watermann, J. H. Sastri, K. Yumoto, and P. Song, Global magnetospheric-ionospheric oscillations initiated by a solar wind pressure impulse, J. Geophys. Res. 108(A6), 1232, doi:10.1029/2002JA009465, 2003.

Martines-Bedenko, V.A., V.A. Pilipenko, V.O. Papitashvili, M.J. Engebretson, J. Watermann, and P.T. Newell, Correspondence between ULF Activity, Field-Aligned Currents, and Dayside Magnetospheric Regions, International Journal of Geomagnetism and Aeronomy, Vol. 4, No. 2, 141-151, 2003.

Neubert, T., and F. Christiansen, Small-Scale, Field-Aligned Currents at the Top-Side Ionosphere, Geophys. Res. Lett. 20, DOI: 10.1029/2003GL017808, Oct. 2003.

Olsen, N., L. Tøffner-Clausen, T.J. Sabaka, P. Brauer, J.M.G. Merayo, J.L. Jørgensen, J.-M. Léger, O.V. Nielsen, F. Primdahl, and T. Risbo, Calibration of the Ørsted Vector Magnetometer, Earth, Planets and Space 55, 11-18, 2003.

Sibeck, D.G., N.B. Trivedi, E. Zesta, R.B. Decker, H.J. Singer, A. Szabo, H. Tachihara, and J. Watermann, Pressure-pulse interaction with the magnetosphere and ionosphere, J. Geophys. Res., 108(A2), 10.1029/2002JA009675, 2003.

Stauning, P., F. Christiansen, J. Watermann, and O. Rasmussen, Detection of intense fine-scale field-aligned current structures in the cusp region from the Ørsted satellite, in: Second CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, eds. C. Reigber, H. Lühr, and P. Schwintzer, Springer-Verlag, 2003.

Stauning, P., F. Christiansen, J. Watermann, and O. Rasmussen, On the modelling of field-aligned currents from magnetic observations by polar orbiting satellites, in: Second CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, eds. C. Reigber, H. Lühr, and P. Schwintzer, Springer-Verlag, 2003.

Stauning, P., F. Christiansen, J. Watermann, T. Christensen, and O. Rasmussen, Mapping of Field-Aligned Current Patterns during Northward IMF, in: First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, C. Reigber, H. Luehr, and P. Schwintzer (Eds.), p. 353-360, Springer-Verlag Berlin Heidelberg New York, 2003.

Thejll, P., B. Christiansen, and H. Gleisner, On correlations between the North Atlantic Oscillation, geopotential heights, and geomagnetic activity, Geophysical Research Letters, 30, doi:10.1029/2002GL016598, 2003.

Toivanen, P.K., D.N. Baker, W.K. Peterson, H.J. Singer, J. Watermann, J.R. Wygant, C.T. Russell, C.A. Kletzing, Polar observations of transverse magnetic pulsations initiated at substorm onset in the high-latitude plasma sheet, J. Geophys. Res., 108(A7), 10.1029/2001JA009141, 2003

Watermann, J.F., F. Christiansen, V. Popov, P. Stauning, and O. Rasmussen, Field-aligned currents inferred from low-altitude earth-orbiting satellites and ionospheric currents inferred from ground-based magnetometers - do they render consistent results? in: First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, C. Reigber, H. Luehr, and P. Schwintzer (Eds.), p. 361-368, Springer-Verlag Berlin Heidelberg New York, 2003.

Watermann, J., P. Stauning, H. Gleisner, and O. Rasmussen, Geomagnetic forecast - current development and future plans, IEEE, Trans. Plasma Sci., 32, 2003.

Weimer, D.R., D.M. Ober, N.C. Maynard, M.R. Collier, D.J. McComas, N.F. Ness, C.W. Smith, and J. Watermann, Predicting IMF propagation delay times using the minimum variance technique, J. Geophys. Res., 108(A1), 1026, 10.1029/2002JA009405, 2003.

2002

Amm, O., M.J. Engebretson, T. Hughes, L. Newitt, A. Viljanen, and J. Watermann, A traveling convection vortex event stufy: Instantaneous ionospheric equivalent currents, estimation of field-aligned currents, and the role of induced currents, J. Geophys. Res., Vol. 107 (A11), 10.1029/2002JA009472, 2002.

Chian, A.C.-L., E.L. Rempel, E.E. Macau, R.R. Rosa, and F. Christiansen, High-dimensional interior crisis in the Kuramoto-Sivashinsky equation, Phys. Rev. E, Vol. 65 (3A), 3520R, 2002.

Christiansen, B., Temporal growth and vertical propagation of perturbations in the winter atmosphere, Q.J.R. Meteorol. Soc., accepted, 2002.

Christiansen, B., Comment on "True versus apparent arctic oscillation", Geophys. Res. Lett. 29(24), 2150, doi:10.1029/200GL016051, 2002.

Christiansen, B., On the physical nature of the Arctic Oscillation, Geophys. Res. Lett., 29 (16), 10.1029/2001GL014130, 2002.

Christiansen, F., V.O. Papitashvili, and T. Neubert, Seasonal variations of high latitude field-aligned current systems infered from Ørsted and MAGSAT observations, J. Geophys. Res.- Space Physics, 107, No. A2, SMP 5.1-5.13, DOI 10.1029/2001JA900104, 2002.

Friedrich, M., M. Harrich, K.M. Torkar, P. Stauning, Quantitative measurements with wide-beam riometers, J. Atm. Solar-Terr. Phys., 64, 359-365, 2002.

Grocott, A., S.W.H. Cowley, J.B. Sigwarth, J.F. Watermann and T.K. Yeoman, Excitation of twin-vortex flow in the nightside high-latitude ionosphere during an isolated substorm, Ann. Geophys., Vol. 20, 1577-1601, 2002.

Heber, U., S. Moehler, R. Napiwotzki, P. Thejll, and E.M. Green, Resolving subdwarf B stars in binaries by HST imaging, Astronomy & Astrophysics, 383, 938-951, 2002.

Hosokawa, K., S. Yamasita, P. Stauning, N. Sato, A.S. Yukimatu, and T. Iyemori, Origin of the SuperDARN broad Doppler spectra: First observational evidence from Oersted satellite magnetometer, accepted for publication in Annales Geophysicae, 2002.

Kataoka, R., H. Fukunishi, L. J. Lanzerotti, T. J. Rosenberg, A. T. Weatherwax, M. J. Engebretson, and J. Watermann, Traveling convection vortices induced by solar wind tangential discontinuities, J. Geophys. Res., Vol. 107 (A12), 10.1029/2002JA009459, 2002.

Lu, G., E.F. Donovan, T. Nagai, T. Mukai, D. Lummerzheim, G.K. Parks, L.A. Frank, H.J. Singer, M.B. Moldwin, J.L. Posch, M.J. Engebretson and J. Watermann, Substorm development as seen through coordinated multi-instrument observations, Proceedings ICS-6, 6th International Conference on Substorms, ed. R.M. Winglee, University of Washington, Seattle, Washington, USA, ISBN 0-9711740-3-2, p. 63-70, 2002.

Lu, G., T.E. Holzer, D. Lummerzheim, J.M. Ruohoniemi, P. Stauning, O. Troshichev, P.T. Newell, M. Brittnacher, and G. Parks, Ionospheric response to the interplanetary magnetic field southward turning: Fast onset and slow reconfiguration, 10.1029/2001JA000324, 01 August 2002.

Moretto, T., H. Hesse, A. Yahnin, A. Ieda, D. Murr, and J.F. Watermann, Magnetospheric signature of an ionospheric Travelling Convection Vortex event, J. Geophys. Res., Vol. 107 (A7), 10.1029/2001JA000152, 2002.

Morozova, A.L., M.I. Pudovkin and P. Thejll, Variations of atmospheric pressure during solar proton events and Forbush decreases for different latitudinal and synoptic zones, International Journal of Geomagnetism and Aeronomy, 3, pp. 181-189, 2002.

Neubert, T., and B.E. Gilchrist, Simulations of relativistic electron pulse injections from spacecraft, Adv. Space Res., 29/9, 1385-1390, 2002.

Neubert, T., and B.E. Gilchrist, Particle simulations of relativistic electron beam injection from spacecraft, J. Geophys. Res. 107, No. A8 SIA 9.1-9.10 DOI: 10.1029/2001JA900102, 2002.

Papitashvili, V.O., F. Christiansen , and T. Neubert, A new model of field-aligned currents derived from high-precision satellite magnetic field data, Geophysical Research Letters, 29, No. 14, 10-1029/2001GL01420, 2002.

Papitashvili, V.O., C.R. Clauer, F. Christiansen, Y. Kamide, V.G. Petrov, O. Rasmussen, and J.F. Watermann, Near-conjugate magnetic substorms at very high latitudes observed by Greenland and Antarctic ground magnetometers and Ørsted satellite, Sixth International Conference on Substorms, Ed. R. M. Winglee, Univ. of Washington - Seattle, ISBN 0-9711740-3-2, pp. 110-114, 2002.

Stauning, P., Field-aligned ionospheric current systems observed from the Magsat and Ørsted satellites during northward IMF, Geophys. Res. Lett., Paper #2001GL013961, 03 Aug, 2002.

Takeuchi, T., T. Araki, A. Viljanen, and J.F. Watermann, "Geomagnetic negative sudden impulses: Interplanetary causes and polarization distribution", J. Geophys. Res., Vol. 107(A7), 10.1029/2001JA000152, 2002.

Vennerstroem, S., T. Moretto, N. Olsen, E. Friis-Christensen, A.M. Stampe, and J. Watermann, Field-aligned currents in the dayside cusp and polar cap region during northward IMF, J. Geophys. Res., Vol. 107(A8), 10.1029/2001JA009162, 2002.

Watermann, J., G.S. Bust, J.P. Thayer, T. Neubert, and C. Coker, Mapping plasma structures in the high-latitude ionosphere using beacon satellite, incoherent scatter radar and ground-based magnetometer observations, Ann. Geophysics, Vol. 45, p.177-189, 2002.

Watermann, J., P. Stauning, O. Rasmussen, V.O. Papitashvili, V. Popov, and J.P. Thayer, Observation of field-aligned and ionospheric currents during Space Weather Month, Sep. 1999, Adv. Space Res., Vol. 30, No. 10, pp 2203-2208, 2002.

Zhou, X.-Y., H. U. Frey, J. F. Watermann, B. T. Tsurutani, D. G. Sibeck, S. B. Mende, and J. K. Arballo, Dawn/Dusk Auroras and Geomagnetic Fluctuations: Ionospheric Effects of Intense Solar Wind Ram Pressure, Geophysical Monograph Series, Volume 133, Earth's Low-Latitude Boundary Layer, 10.1029/133GM36, p. 361-370, 2002.

2001

Christiansen, B., Downward propagation of zonal mean zonal wind anomalies from the stratosphere to the troposphere: Model and reanalysis, J. Geophys. Res., 106, 27307-27322, 2001.

Farrugia, C.J., F.T. Gratton, R.B. Torbert, L. Bender, G. Gnavi, K.W. Ogilvie, N.V. Erkaev, R.P. Lepping, and P. Stauning, On the dependence of dayside Kelvin-Helmholtz activity on IMF orientation, Adv. Space. Res., accepted, 2001.

Farrugia, C.J., V.K. Jordanova, M.P. Freeman, C.C. Cocheci, R.L. Arnoldy, M. Engelbretson, P. Stauning, G. Rostoker, M.F. Thomsen, G. Reeves, and K. Yumoto, Large-scale geomagntic effects of May 4, 1998, Adv. Space. Res., accepted, 2001.

Friedrich, M., M. Harrich, K.M. Torkar, and P. Stauning, Quantitative Measurements with Wide-Beam Riometers, J. Atm. Solar-Terr. Phys., accepted, 2001.

Huang, C.-S., G.J. Sofko, A.V. Kustov, J.W. MacDougall, R.A. Greenwald, J.M. Ruohoniemi, J.C. Foster, J.P. Villain, M. Lester, J. Watermann, V.O. Papitashvili, and W.J. Hughes, Long-period magnetospheric-ionospheric perturbations during northward interplanetary magnetic field, J. Geophys. Res., Vol. 106, 13,091-13,104, 2001.

Hughes, J.M., J. LaBelle, and J. Watermann, Statistical and case studies of 2fce auroral roar observed with a medium frequency interferometer, J. Geophys. Res., Vol. 106, 21,147-21,156, 2001.

Kauristie, K., T.I. Pulkkinen, O. Amm, A. Viljanen, M. Syrjaesuo, P. Janhunen, S. Massetti, S. Orsini, M. Candidi, J. Watermann, E. Donovan, P. Prikryl, I.R. Mann, P. Eglitis, C. Smith, W.F. Denig, H.J. Opgenoorth, M. Lockwood, M. Dunlop, A. Vaivads, M. Andre, Ground-based and satellite observations of high-latitude auroral activity in the dusk sector of the auroral oval, Annales geophysicae, Vol. 19, p. 1683-1696, 2001.

Khan, H., S.W.H. Cowley, E. Kolesnikova, M. Lester, M.J. Brittnacher, T.J. Hughes, W.J. Hughes, W.S. Kurth, D.J. McComas, L. Newitt, C.J. Owen, G.D. Reeves, H.J. Singer, C.W. Smith, D.J. Southwood, and J.F. Watermann, Observations of two complete substorm cycles during the Cassini Earth swing-by: Cassini magnetometer data in a global context, J. Geophys. Res., Vol. 106, p. 30,141-30,176, 2001.

Kim, H.R., R.R.B. von Frese, J.W. Kim, P.T. Taylor, T. Neubert, Ørsted Verifies Regional Magnetic Anomalies of the Antarctic Lithosphere, Geophys. Res. Lett., accepted, 2001

Kindem, I., and B. Christiansen, Tropospheric response to stratospheric ozone loss, Geophys. Res. Lett., Vol. 28, pp. 1547-1551, 2001.

Lockwood, M., H. Opgenoorth, A.P. van Eyken, A. Fazakerley, J.-M. Bosqued, W. Denig, J. Wild, C. Cully, R. Greenwald, G. Lu, O. Amm, H. Frey, A. Strømme, P. Prikryl, M.A. Hapgood, M.N. Wild, R. Stamper, M. Taylor, I. McCrea, K. Kauristie, T. Pulkkinen, F. Pitout, A. Balogh, M. Dunlop, H. Rème, R. Behlke, T. Hansen, G. Provan, P. Eglitis, S.K. Morley, D. Alcayde, P.-L. Blelly, J. Moen, E. Donovan, M. Engebretson, M. Lester, J. Watermann, and M.F. Marcucci, Coordinated Cluster, ground-based instrumentation and low-altitude satellite observations of transient poleward-moving events in the ionosphere and in the tail lobe, Ann. Geophys., Vol. 19, p. 1589-1612, 2001.

Lockwood, M., A. Fazakerley, H. Opgenoorth, J. Moen, A.P. van Eyken, M. Dunlop, J.-M. Bosqued, G. Lu, C.Cully, P. Eglitis, I.W. McCrea, M.A. Hapgood, M.N. Wild, R. Stamper, W. Denig, M. Taylor, J.A. Wild, G. Provan, O. Amm, K. Kauristie, T. Pulkkinen, A. Strømme, P. Prikryl, F. Pitout, A. Balogh, H. Rème, R. Behlke, T. Hansen, R. Greenwald, H. Frey, S.K. Morley, D. Alcayde, P.-L. Blelly, E. Donovan, M. Engebretson, M. Lester, J. Waterman, M.F. Marcucci, Coordinated Cluster and ground-based instrument observations of transient changes in the magnetopause boundary layer during an interval of predominantly northward IMF: relation to reconnection pulses and FTE signatures, Ann. Geophys., Vol. 19, p. 1613-1640, 2001.

Lyatsky, W., L.L. Cogger, B. Jackel, A.M. Hamza, W.J. Hughes, D. Murr, and O. Rasmussen , Substorm development as observed by Interball UV imager and 2-D magnetic array, J. Atmos. and Solar-Terr. Phys., 63, pp. 1609-1621, 2001.

Mende, S.B., H.U. Frey, R.L. Rairden, H.-T. Su, R.-R. Hsu, T.H. Allin, and T. Neubert, Bead observations in sprites, Adv. Space Phys., accepted, 2001.

Neubert, T., M. Mandea, G. Hulot, R. von Frese, F. Primdahl, J.L. Jørgensen, E. Friis-Christensen, P. Stauning, N. Olsen, and T. Risbo, Ørsted Satellite Captures High-Precision Geomagnetic Field Data, EOS, Vol. 82, No. 7, p. 81, 87, and 88, Feb. 13, 2001.

Neubert, T., T.H. Allin, H. Stenbæk-Nielsen, and E. Blanc, Sprites over Europe, Geophys. Res. Lett., 28, 3585, 2001

Opgenoorth, H.J., M. Lockwood, D. Alcayde, E. Donovan, M.J. Engebretson, A.P. van Eyken, K. Kauristie, M.Lester, J. Moen, J. Waterman, H. Alleyne, M. Andre, M.W. Dunlop, N. Cornilleau-Wehrlin, P.M.E. Decreau, A. Fazerkerley, H. Reme, R. Andre, O. Amm, A. Balogh, R. Behlke, P.L. Blelly, H. Boholm, E. Borälv, J.M. Bosqued, S. Buchert, M. Candidi, J.C. Cerisier, C. Cully, W.F. Denig, R. Doe, P. Eglitis, R.A. Greenwald, B. Jackel, J.D. Kelly, Ian Krauklis, G. Lu, I.R. Mann, M.F. Marcucci, I.W. McCrea, M. Maksimovic, S. Massetti, A. Masson, D.K. Milling, S. Orsini, F. Pitout, G. Provan, J.M. Ruohoniemi, J.C. Samson, J.J. Schott, F. Sedgemore-Schulthess, R. Stamper, P. Stauning, A. Strömme, M. Taylor, A. Vaivads, J.P. Villain, I. Voronkov, J. Wild, and M. Wild, Coordinated Ground-Based, Low Altitude Satellite and Cluster Observations on Global and Local Scales During a Transient Postnoon Sector Excursion of the Magnetospheric Cusp, Ann. Geophys., Vol. 19, p. 1367-1398, 2001.

Papitashvili, V.O., F. Christiansen , and T. Neubert, Field-aligned currents during IMF ~ 0, Geophysical Research Letters, Vol. 28, No. 15, p. 3055, 2001.

Pilipenko, V., N. Kleimenova, O. Kozyreva, M. Engebretson, and O. Rasmussen, Long-period magnetic activity during the May 15, 1997 storm, J. Atmos. and Solar-Terr. Phys., 63, 489-501, 2001.

Pilipenko, V., J. Watermann, V. Popov, and V. Papitashvili, Relationship between Auroral Electrojet and Pc5 ULF waves, J. Atmos. and Solar-Terr. Phys., Vol. 63, No. 14, 1545-1557, 2001.

Popov, V.A., V.O. Papitashvili, and J. Watermann, Modeling of equivalent ionospheric currents from meridian magnetometer chain data, Earth Planets Space, Vol. 53, pp. 129-137, 2001.

Reichel, R., P. Thejll, and K. Lassen, The cause-and-effect relationship of solar cycle length and the Northern Hemisphere air surface temperature, J. Geophys. Res., Vol. 106, No. A8, p. 15,635, 2001.

Sastri, J.H., T. Takeuchi, T. Araki, K. Yumoto, S. Tsunomura, H. Tachihara, H. Luehr and J. Watermann, Preliminary impulse (PI) of the geomagnetic storm sudden commencement of November 18, 1993, J. Geophys. Res., Vol. 106, 3905-3918, 2001.

Stauning, P., F. Primdahl, J. Watermann, and O. Rasmussen, IMF By-related Cusp Currents Observed from the Ørsted Satellite and from Ground, Geophys. Res. Lett., Vol. 28, No. 1, p. 99, January 2001.

Stauning, P., Field-aligned ionospheric current systems observed from the Magsat and Ørsted satellites during northward IMF, Geophys. Res. Lett., accepted, Nov. 2001.

Thejll, P., Decadal power in land air temperatures: Is it statistically significant? J. Geophys. Res., Vol. 106, No. D23, p. 31,693, 2001.

2000

Borälv, P. Eglitis, H.J. Opgenoorth, E. Donovan, G. Reeves, P. Stauning , The dawn and dusk electrojet response to substorm onset, Ann. Geophys.,18, pp.1097-1107, 2000.

Christiansen, B., A model study of the dynamical connection between the Arctic Oscillation and stratospheric vacillations, J.Geophys. Res., 105, 29461-29474, 2000.

Christiansen, B., Chaos, quasi-periodicity and interannual variability: Studies of a stratospheric vacillation model, J. Atmos. Sci., 57, pp. 3161-3173, 2000.

Christensen, T., P. Stauning, and F. Christiansen, Event study of high-energy electron precipitation by comparison of Ørsted data and ground-based observations, in: T. Neubert and P. Ultré-Guérard (eds.), Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Cyamukungu, M., Gh. Grégoire, P. Stauning, and J. Lemaire, The charged particle detector (CPD): Data Analysis Methodology, in: T. Neubert and P. Ultré-Guérard (eds.), Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Frank-Kamenetsky, A.V., O.A. Troshichev, G.B. Burns and V.O. Papitashvili, Variations of the atmospheric electric field in the near-pole region related to the interplanetary magnetic field, J. Geophys. Res., 106, No. A1, 179-180, 2000.

Hecht, J.H., D.L. McKenzie, A.B. Christensen, D.J. Strickland, J.P. Thayer and J. Watermann, Simultaneous observations of lower thermospheric composition change during moderate auroral activity from Kangerlussuaq and Narsasuaq, Greenland, J. Geophys. Res., Vol. 105, 27,109 - 27,118, 2000.

Huang, C.-S., G.J. Sofko, A.V. Kustov, J.W. MacDougall, D.A. Andre, W.J. Hughes and V.O. Papitashvili, Quasi-periodic disturbance with a 40-min period during prolonged northward interplanetary magnetic field, Geophys. Res. Lett., 27, 12, 1795-1798, 2000.

Israelevich, P.L., V.O. Papitashvili and A.I. Ershkovich, Validation of the stream function method used for reconstruction of experimental ionospheric convection patterns, Ann. Geophys. 18, no. 4, 454-460, 2000.

Jørgensen, T.S., and A.W. Hansen, Comments on "Variation of cosmic ray flux and global cloud coverage - a missing link in solar-climate relationships" by Henrik Svensmark and Eigil Friis-Christensen (J. Atmos. and Solar-Terr. Phys., 59, 1225-1232, 1997), J. Atmos. and Solar-Terr. Phys., 62, 73-77, 2000.

Lassen, K and E. Friis-Christensen, "Reply to 'Solar cycle lengths and climate: A reference revisited, by Laut and Gundermann' ", J. Geophys. Res., 105, pp. 27,493-27,495, 2000.

Moretto, T., A.J. Ridley, M.J. Engelbretson and O. Rasmussen, High-Latitude ionospheric response to a sudden impulse event during northward IMF conditions, J. Geophys. Res., 105, 2521, 2000.

Moretto, T., F. Christiansen, and N. Olsen, Detection of ionospheric and field-aligned current patterns: A comparison of different methods, in: T. Neubert and P. Ultré-Guérard (eds.), Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Neubert, T. and P. Ultré-Guérard, Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Nishino, M., H. Yamagishi, N. Sato, R. Liu, H. Hu, P. Stauning and J.A. Holtet, Conjugate features of daytime absorption associated with pecific changes in the solar wind observed by inter-hemispheric high-latitude imaging riometers. Advances in Polar Upper Atmosphere Research, 14, pp. 76-92, 2000.

Olsen, N., R. Holme, G. Hulot, T. Sabaka, T. Neubert, L. Tøffner-Clausen, F. Primdahl, J. Jørgensen, J.-M. Leger, D. Barraclough, J. Bloxham, J. Cain, C. Constable, V. Golovkov, A. Jackson, P. Kotze, B. Langlais, S. Macmillan, M. Mandea, J. Merayo, L. Newitt, M. Purucker, T. Risbo, M. Stampe, A. Thomson, and C. Voorhies, Ørsted Initial Field Model, Geophys. Res. Lett., 27, 3607, 2000.

Olsen, N., T. Sabaka and L. Tøffner-Clausen, Determination of the IGRF 2000. Earth, Planets and Space, Vol. 52, No. 12, p. 1175-1182, 2000.

Papitashvili, V.O., N.E. Papitashvili and J.H. King, Solar cycle effects in planetary geomagnetic activity: Analysis of 36-year long OMNI dataset, Geophys. Res. Lett., 27, 17, pp. 2797-2800, 2000.

Papitashvili, V.O., C.R. Clauer, F. Christiansen, V.A. Pilipenko, V. Popov, O. Rasmussen, V.P. Suchdeo, and J.F. Watermann, Geomagnetic disturbances at high latitudes during very low solar wind density event, Geophys. Res. Lett.,Vol. 27, 23, pp.3785-3788, 2000.

Papitashvili, V.O., F. Christiansen, and T. Neubert, Field-aligned current patterns from Ørsted observations, in: T. Neubert and P. Ultré-Guérard (eds.), Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Pilipenko, V.A., E.N. Fedorov, M.J. Engebretson, V.O. Papitashvili, and J. Watermann, Poleward progressing quasi-periodic disturbances at cusp latitudes: The role of wave processes, J. Geophys. Res., Vol. 105, 27,569 - 27,588, 2000.

Pilipenko, V., M. Vellante, and E. Fedorov, Distortion of the ULF wave spatial structure upon transmission through the ionosphere, J. Geophys. Res., 105, NA9, 21255-21236, 2000.

Provencal, J.L., H.L. Shipman, P. Thejll, S. Vennes, Carbon and Hydrogen in Hot DB White Dwarfs, Astrophysical Journal, 42, pp. 1041-1056, 2000.

Sakai, J.-I., T. Haruki, Y. Kazimura and T. Neubert, Generation of eletromagnetic waves and Alfven waves during coalescence of magnetic islands in pair plasmas, Physica Scripta, T84, 42, 2000.

Sakai, J.-I., T. Nakayama, M. Nambu and T. Neubert, Emission of whistler and electromagnetic waves from electron shear-flow instability in a plasma, Phys. Lett. A, 265, 103, 2000.

Stauning, P. and F. Primdahl, First detection of global dawn-dusk ionospheric current intensities using Ampère's integral law on Ørsted satellite orbits, Geophys. Res. Lett., Vol. 27, No. 20, p. 3273-3276, 2000.

Stauning, P., P. Davidsen, and M. Cyamukungu, Ørsted CPD high-energy particle observations and radiation effects in Ørsted instruments and systems, in: T. Neubert and P. Ultré-Guérard (eds.), Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Stauning, P., F. Primdahl, J. Watermann, and O. Rasmussen, Correlation of field-aligned currents derived from Ørsted magnetometer data and polar dayside ionospheric convection patterns, in: T. Neubert and P. Ultré-Guérard (eds.), Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Takeuchi, T., T. Araki, H. Luehr, O. Rasmussen, J. Watermann, D.K. Milling, I. R. Mann, K. Yumoto, K. Shiokawa, T. Nagai, Geomagnetic negative sudden impulse due to a magnetic cloud observed on May 13, 1995, J. Geophys. Res., Space Physics, 105, A8, pp. 18835 - 18846, 2000.

Thejll, P. and K. Lassen, Solar forcing of the Northern hemisphere land air temperature: New data, J. Atmos. and Solar-Terr. Phys., 62, pp. 1207-1213, 2000.

Troshichev, O.A., R. Yu. Lukianova, V.O. Papitashvili, F.J. Rich, and O. Rasmussen, Polar cap index (PC) as a proxy for ionospheric electric field in the near-pole region, Geophys. Res. Lett., 27, 23, pp. 3809-3812, 2000.

Watermann, J., and P. Stauning, Space-time ambiguities in observations of the magnetospheric cusp: the need for small-scale multi-point magnetospheric measurements, ESA, SP-449, pp. 299-302, 2000.

Watermann, J. F., O. Rasmussen, P. Stauning, and V. Papitashvili, Observations of field-aligned and ionospheric currents during space weather month, September 1999, in: T. Neubert and P. Ultré-Guérard (eds.), Proceedings from Ørsted 3rd International Science Team Meeting DMI, Technical Report 00-22, ISSN-0906-897x, CNES/DG/DCE/CE/EC no 2000-259.

Wu, J.-G., L. Eliasson, H. Lundstedt, A. Hilgers, L. Andersson and O. Norberg, Space environment effects on geostationary spacecraft: Analysis and prediction, Adv. Space Research, 26, 31, 2000.

Yagova, N.V., V.A. Pilipenko, A.S. Rodger, V.O. Papitashvili, and J.F. Watermann, Long period ULF activity at the polar cap preceding substorm, in: Proc. 5th International Conference on Substorms, St. Petersburg, Russia (ESA SP-443), pp.603-606, 2000.

Yamagishi, H., Y. Fujita, N. Sato, M. Nishino, P. Stauning, R. Liu and T. Saemundsson, Intermemispheric conjugacy of auroral poleward expansion observed by conjugate imaging riometers at ~67º and 75º-77º invariant latitude, Advances in Polar Upper Atmosphere Research, 14, pp. 12-33, 2000.

1999

Gyobu, D., J.-I. Sakai, M. Eda, T. Neubert, and M. Nambu, Emission of electromagnetic waves from Langmuir waves generated by electron beam instability in pair plasmas, J. Phys. Soc. Japan, 68, 467, 1999. 

Gyobu, D., J.-I. Sakai, M. Eda, T. Neubert, and M. Nambu, Emission of electromagnetic waves from Langmuir waves generated by cold electron beam instability in pair plasmas, J. Plasma Fusion Res., 2, 129, 1999.

Haruki, T., J.-I. Sakai, T. Neubert and M. Nambu, Generation of electromagnetic waves and Alfven waves during coalescence of magnetic islands in pair plasmas, J. Plasma Fusion Res., 2, 133-137, 1999.

Nakayama, T. J.-I. Sakai, T. Neubert and M. Nambu, Generation of magnetic fields near Kelvin-Helmholz instability region in pair plasmas, J. Plasma Fusion Res., 2, 138, 1999.

Nishino, M., H. Yamagishi, N. Sato, Y. Murata, R. Liu, H. Hu, P. Stauning and J.A. Holtet, Post-noon ionospheric absorption observed by the imaging riometers at polar cusp/cap conjugate stations. Chinese Journal of Polar Science, Vol 10, 2, pp.125-132, 1999.

Papitashvili, V.O. and O. Rasmussen, Effective area for the northern polar cap magnetic activity index, Geophys. Res. Lett., 26, no. 19, 2917-2920, 1999.

Vennerstrøm, S., Dayside magnetic ULF power at high latitudes: A possible long-term proxy for the solar wind velocity?, J. Geophys. Res., 104, A5, 10145-10157, 1999.

1998

Kazimura, Y., J.-I. Sakai, T. Neubert, og S.V. Bulanov, Generation of a small-scale quasi-static magnetic field and fast particles during the collision of electron-positron plasma clouds, Astrophys. Journal, 498, 183-186, 1998.

Kazimura, Y., F. Califano, J.I. Sakai and T. Neubert, Magnetic field generation during the collision of electron-ion plasma clouds, J. Phys. Soc. Japan, 67, 1079, 1998.

Moretto, T. and A. Yahnin, Mapping travelling convection vortex events with respect to energetic particle boundaries,  Ann. Geophysicae, 16, 891-899, 1998.

Nilsson, H., S. Kirkwood, T. Moretto, Incoherent scatter radar observations of the cusp acceleration region and cusp field-aligned currents, J. Geophys. Res., 103, A11, 26721, 1998.

Nilsson, H., H.M. Yamauchi, T. Mukai, T. Yamamoto, T. Moretto, Observations of an enhanced convection flow channel for northward turning IMF, Geoph. Res. Lett. 24, 3137, 1998.

Prikryl, P., R.A. Greenwald, G.J. Sofko, J.P., Villain,, C.W.S. Ziesolleck, E. Friis-Christensen, Solar-wind-driven pulsed magnetic reconnection at the dayside magnetopause, Pc5 compressional oscillatations, and field line resonances, J. Geophys. Res., 103, 17307-17322, 1998.

Pulkkinen, T.I., D.N. Baker, L.A. Frank, J.B. Sigwarth, H.J. Opgenoorth, R. Greenwald, E. Friis-Christensen, T. Mukai, R. Nakamura, H. Singer, G.D. Reeves, and M. Lester, Two substorm intensifications compared: Onset expansion, and global consequences, J. Geophys. Res., 103, 15-27, 1998.

Ridley, A., T. Moretto, P. Ernstrom og C.R. Clauer, Global analysis of three travelling convection vortex events during the Nov. 93 storm using the assimilative mapping of ionospheric electrodynamics technique, J. Geophys. Res. , 103, A11, 26349-26358, 1998.

Sakai, J.-I., M. Eda, H. Miyazaki og T. Neubert, Electromagnetic wave emission from Kelvin-Helmholtz instability region in pair plasmas, J. Phys. Soc. Japan, 67, 2170, 1998.

Sakai, J.-I., T. Nakayama, M. Nambu og T. Neubert, Emission of whistler and electromagnetic waves from Kelvin-Helmholtz instability region in a plasma, J. Phys. Soc. Japan, 1998.

Sandholt, P.E., C.J. Farrugia, M. Øieroset, P. Stauning og W.F. Denig, Auroral sctivity associated with unsteady magnetospheric erosion: Observations on December 18, 1990, J. Geophys. Res., 103, 2309-2317, 1998.

Stauning, P., Ionspheric radiowawe absorbation processes in the dayside polar cap boundary regions, J. Moen, A. Egeland and M. Lockwood (eds.), Polar Cap Boundary Phenomena, 233-254, Kluwer Academic Publishers, 1998.

Stauning, P., Substorm modelling based on observations of an intense high-latitude absorption surge event, J. Geophys. Res., 103, 26, 426-433, 452, 1998.

Stauning, P., Polar convection-related ionspheric radio-wave absorption processes observed by imaging riometers, Adv. Space Res., 22, 1279-1288, 1998.

Svensmark, H., Influence of Cosmic Rays on Earth´s climate, Phys. Rev. Lett., 81, 5027-5030, 1998.

Yamagishi, H., Y. Fujita, N. Sato, P. Stauning, M. Hishino og K. Makita, Conjugate features of auroras observed by TV cameras and imaging riometers at auroral zone and polar cap conjugate-pair stations, J. Moen, A. Egeland and M. Lockwood (eds.), Polar Cap Boundary Phenomena, 233-254, Kluwer Academic Publishers, 1998.

Ulla, A, P. Thejll, Infrared flux excesses from hot subdwarfs II. 72 more objects, Astronomy and Astrophysics Supplement Series, 132, 1-12, 1998.

1997

Clauer, R.C., A.J. Riedley, R.J. Sitar, H.J. Singer, A.S. Rodger, E. Friis-Christensen, og V.O. Papitashvili, Field line resonant pulsations associated with a strong dayside ionospheric shear convection flow reversal, J. Geophys. Res., 102, 4585-4596.

Eda, M., J.I. Sakai, J. Zhao, T. Neubert, og M. Nambu, Generation of Langmuir waves from whistler waves by the plasma maser, J. Phys. Soc. Japan, 66(3), 525.

Eda, M., J.I. Sakai, J. Zhao, T. Neubert og M. Nambu, Generation of Langmuir waves from Alfven waves by the plasma maser in pair plasmas, J. Phys. Soc. Japan, 66, 3470.

Eda, M., J.I. Sakai, J. Zhao, T. Neubert og M. Nambu, Simulation study on generation of Langmuir waves from whistler waves by the plasma maser, J. Phys. Soc. Japan, 3, 525.

Friis-Christensen, E., and H. Svensmark, What do we really know about the Sun-climate connection?, Adv. Space Res., 20, 913.

Kazimura, Y., J.I. Sakai, T. Neubert og S.V. Bulanov, Generation of a small-scale quasi-static magnetic field and fast particles during the collision of electron-positron plasma clouds, Astrophys. J., 498, L183, 1998.

Kjærgaard Andreasen, G., Reconstruction of past solar wind variations: Inversion of the geomagnetic response at Godhavn, J. Geophys. Res., 102, 7025-7036.

Moretto, T. and E. Friis-Christensen, Ground Observations of Dayside Small-Scale Dynamic Features, Advances in Space Research, 20, 863.

Moretto, T., E. Friis-Christensen, H. Lühr og E. Zesta, Global perspective of ionospheric travelling convection vortices: Case study of two GEM events, J. Geophys. Res., 102, 11597-11610.

Nilsson, H., H.M. Yamauchi, T. Mukai, T. Yamamoto, T. Moretto, Observations of an enhanced convedtion flow channel for northward turning IMF, J. Geophys. Res., 24, 3137-3140, 1997.

Nilsson, H., S. Kirkwood, T. Moretto, Incoherent scatter radar observations of the cusp acceleration region and cusp field-aligned currents, Accepted for publication in J. Geophys. Res., Vol 103, p. 26721-26730, 1998.

Nishino, M., H. Yamagishi, P. Stauning, T.J. Rosenberg og J.A. Holtet, Location, spatial scale and motion of radio wave absorption in the cusp-latitude ionosphere observed by imaging riometers. J. Atmos. Solar-Terr. Phys., 95, 903-924, 1997.

Provencal, J.L., H.L. Shipman, E. Hog, P. Thejll,Testing the white dwarf mass-radius relation with Hipparcos, Astrophysical Journal, 494, 759.

Ridley, A., T. Moretto, P. Ernstrom, C.R. Clauer, Global analysis of three travelling convection vortex events during the November 93 storm using the assimilativ mapping of ionspheric electrodynamics technique, J. of Geophys. Res., Vol. 103, No. 11, p. 26349-26358, 1998.

Shipman, H.L., J.L. Provencal, E. Høg,  P. Thejll, The Mass and Radius of 40 Eridani B from HIPPARCOS: An Accurate Test of Stellar Interior Theory, Astrophysical Journal, 488, 43.

Stauning, P., Ionospheric radiowave absorption processes in the dayside polar cap boundary regions, accepted for publication in: A. Egeland (ed.), Polar Cap Boundary Phenomena, Kluwer Academic Publishers.

Stauning, P., Polar convection-related ionospheric radio-wave absorption processes observed by imaging riometers. Accepted for publication in Adv. Space Res., 22, pp 1279-1288, 1998.

Stauning, P., Substorm modelling based on observations of an intense high-latitude absorption surge event. JGRA, 103, no. A11.

Svensmark, H. and E. Friis-Christensen, Variation of cosmic ray flux and global cloud coverage - A missing link in solar-climate relationships, J. Atmos. Solar-Terr. Phys., 59, 1225-1232.

Tavares, M., E. Friis-Christensen, T. Moretto and S. Vennerstrøm, Semiannual variation of geomagnetic activity in the Greenland magnetometer chain, accepted for publication in Physics and Chemistry of the Earth, Vol. 22, No. 7-8, p. 685-689, 1997.

Thejll, P., C. Flynn, R. Williamson og R. Saffer, Proper motions of hot subdwarfs - The kinematic population membership of the sdB, Astronomy and Astrophysics, 317, 689-693.

Tsunoda, R.T., J.K. Olesen og P. Stauning, Radar evidence for a new low-frequency crossed-field plasma instability in the polar mesopause region: A case study, Geophys. Res. Lett., 24, 1215-1218.

Ulla, A., P. Thejll, T. Kipper, U.G. Jørgensen, Infrared observations of peculiar carbon stars, Astronomy and Astrophysics, 319, 244-249.

Yahnin, A.G., V.A. Sergeev, B.B. Gvozdevsky, S. Vennerstrøm, Magnetospheric source region of discrete auroras inferred from their relationship with isotropy boundaries of energetic particles, Ann. Geophys., 15, 943-958.

Zhao, J., T. Ohi, J.I. Sakai og  T. Neubert, Excitation of large-amplitude Alfven waves in a nonrelativistic electron-positron plasma with a temperature anisotropy of Tperp, Tpar, Physics of Plasmas, 4, 3501.

Vennes, S., P. Thejll, A., Galvan, R. Genova, J. Dupuis, Hot White Dwarfs in the Extreme Ultraviolet Explorer Survey. II. Mass Distribution, Space Density, and Population Age, Astrophysical Journal, 480, 714.

Øieroset, M., P.E. Sandholt, H. Lühr, W.F. Denig, og T. Moretto, Auroral and geomagnetic signatures of flux transfer events in the prenoon sector during positive IMF By conditions, J. Geophys. Res., 102, 7191.

1996

Angelopoulos, V., F.V. Coroniti, C.F. Kennel, M.G. Kivelson, R.J. Walker, C.T. Russell, R.L. McPherron, E. Sanchez, C.-I. Meng, W. Baumjohann, G.D. Reeves, R.D. Belian, N. Sato, E. Friis-Christensen, P.R. Sutcliffe, K. Yumoto, and T. Harris, Multipoint analysis of a bursty flow event on April 11, 1985, J. Geophys. Res., 101, 4967-4989, 1996.

Angelopoulos, V., D.G. Mitchell, R.W. Mcentire, D.J. Williams, A.T.Y. Lui, S.M. Krimigis, R.B. Decker, S.P. Christon, S. Kokubun, T. Yamamoto, Y. Saito, T. Mukai, F.S. Mozer, K. Tsuruda, G.D. Reeves, W.J. Hughes, J.C. Samson, E. Friis-Christensen, O. Troshichev, Tailward progression of magnetotail acceleration centers: Relationship to substorm current wedge, J. Geophys. Res., 101, 24,599-24,619, 1996.

Angelopoulos, V., V.A. Sergeev, F. S. Mozer, K. Tsuruda, S. Kokubun, T. Yamamoto, R. Lepping, G. Reeves, and E. Friis-Christensen, Spontaneous substorm onset during a prolonged period of steady, southward interplanetary magnetic field, J. Geophys. Res., 101, 24,583-24,598, 1996.

Ditlevsen, P.D., H. Svensmark, and S. Johnsen, Contrasting atmospheric and climate dynamics of the last Glacial and Holocene periods, Nature, 379, 810-812, 1996.

Kjærgaard Andreasen, G., Sensitivity analysis of the influence of solar wind parameters on high-latitude current patterns: A multiple linear regression model of SMC correlations using Godhavn magnetometer data, J. Geophys. Res., 101, 1996.

Matthews, D.I., J.M. Ruohoniemi, J.R. Dudeney, C.F. Farrugia, J.L. Lanzerotti, and E. Friis-Christensen, Conjugate cusp-region ULF responses to the solar wind event of May 23, 1989, J. Geophys. Res., 101, 7829-7841, 1996.

Nakamura, R., S. Kokubon, Y. Kamide, T. Yamamoto, L.A. Frank, W.R. Paterson, E. Friis-Christensen, K. Hayashi, T. Iyemori, K. Yumoto, H. Lühr, and O. Troshichev, Observations of the magnetosheath near the nominal tail axis during the geomagnetic storm of January 25, 1993, J. Geomag. Geoelectr., 48, 577-588, 1996.

Nishikawa, K.-I., and T. Neubert, Solar wind-magnetosphere interaction as simulated by a 3D, EM particle code: A 3-D reconnection at the magnetopause, Adv. Space Res., 18, (8), 263, 1996.

Neubert, T., B. Gilchrist, S. Wilderman, H.J. Wang, and L. Habash, Relativistic electron beam propagation in the Earth's atmosphere: Modeling results, Gephys. Res. Lett., 23, 1009, 1996.

Olsen, N., Magnetospheric contributions to geomagnetic daily variations, Ann. Geophysicae, 14, 538-544, 1996.

Sanchez, E.R., J.M. Ruohoruemi, C.-I. Meng, E. Friis-Christensen, Toward an Observational Synthesis of Substorm Models: Precipitation Regions and High-Latitude Convection Reversals Observed in the Nightside Auroral Oval by HF radars and DMSP satellites, J. Geophys. Res., 101, 19,801-19,837, 1996.

Sandholt, P.E., C.J. Farrugia, and P. Stauning, Auroral signature of lobe reconnection, Geophys. Res. Lett.,23, 1725-1728, 1996.

Sandholt, P.E., C.J. Farrugia, P. Stauning, S.W.H. Cowley, and T. Hansen, Cusp/cleft auroral forms and activities in relation to ionospheric convection: Responses to specific changes in solar wind and interplanetary magnetic field conditions. J. Geophys. Res., 101, 5003-50020, 1996.

Stauning, P., Investigations of ionospheric radio wave absorption processes using imaging riometer techniques. J. Atmos. Terr. Phys., 58, 753-764, 1996.

Stauning, P., Ionospheric investigations using imaging riometers, In: Review of Radio Science 1993-1996, ed. W. Ross Stone, 585-617, Oxford University Press, 1996.

Stauning, P., High latitude D- and E-region investigations using imaging riometer observations. J. Atmos. Terr. Phys., 58, 765-783, 1996.

Stauning, P. and T.J. Rosenberg, High-latitude daytime absorption spike events, J. Geophys. Res., 101, 2377-2396, 1996.

Vennerstrøm, S. and E. Friis-Christensen, Long-term and solar cycle variation of the ring current, J. Geophys. Res., 101, 24727, 1996.

Yahnin, A. and T. Moretto, Travelling convection vortices in the ionosphere map to the central plasma sheet, Ann. Geophys., 14, 1025, 1996.

Øieroset, M., H. Lühr, J. Moen, T. Moretto, and P.E. Sandholt, Dynamical auroral morphology in relation to ionospheric plasma convection and geomagnetic activity: Signatures of magnetopause X-line dynamics and flux transfer events, J. Geophys. Res., 101, 13275, 1996.

1995

Angelopoulos, V., D.G. Mitchell, D.J. Williams, R.W. Mcentire, A.T.Y. Lui, R.B. Becker, S.M. Krimigis, E.C. Roelof, S.P. Christon, S. Kokubun, T. Yamamoto, W.J. Hughes, J.C. Samson, E. Friis-Christensen, K. Hayashi, Growth and evolution of a plasmoid associated with a small, isolated substorm: IMP8 - GEOTAIL measurements in the plasma sheet, Geophys. Res. Lett., 22, 3011-3014, 1995.

Clauer, C.R., P. Stauning, T.J. Rosenberg, E. Friis-Christensen, P.M. Miller, and R.J. Sitar, Observations of a solar wind driven modulation of the dayside ionospheric DPY current system, J. Geophys. Res., 100, 7697-7713, 1995.

Farrugia, C.J., P.E. Sandholt, S.W.H. Cowley, D.J. Southwood, A. Egeland, P. Stauning, R.P. Lepping, A.J. Lazarus, T. Hansen, and E. Friis-Christensen, Reconnection-associated auroral activity stimulated by two types of upstream dynamic pressure variations: The IMF BZ~0, BY<<0 case. J. Geophys. Res., 100, 21,753-21,772, 1995.

Hansen, C. og S.E. Larsen, Further work on the Kitaigorodskii roughness length model: A new derivation using Lettau's expression on steep waves, Geophysica, Vol. 33, No. 2, p. 29-44, 1997.

Lassen, K., and E. Friis-Christensen, Solar variability during the past five centuries and the apparent association with terrestrial climate, Journal Atm. Terr. Phys., 57, 835-846, 1995.

Lin, Z.M., E.A. Bering, J.R. Benbrook, B. Liao, L.J. Lanzerotti, C.G. Maclennan, A.N. Wolfe, and E. Friis-Christensen, Statistical studies of impulsive events at high latitudes, J. Geophys. Res., 100, 7553, 1995.

Lu, G., L. R. Lyons, P. H. Reiff, V. F. Denig, O. de la Beaujardiere, H.W. Kroehl, P. T. Newvell, F.J. Rich, H.Opgenoorth, M.A. L. Persson J.M. Ruohoniemi, E. Friis-Christensen, L. Tomlinson, R. Morris, G. Burnsand, A. McEwin, Characteristics of ionospheric convection and field-aligned current in the dayside cusp region, J. Geophys. Res., 100, 11845, 1995.

Moen, J., P.E. Sandholt, M. Lockwood, W.F Denig, U.P. Løvhaug, B. Lybekk, A. Egeland, D. Opsvik, and E. Friis-Christensen, Events of enhanced convection and related dayside auroral activity, J. Geophys. Res, 100, 23917, 1995.

Morelli, J.P., R.J. Bunting. S.W.H. Cowley, C.J. Farrugia. M.P. Freeman. E.Friis-Christensen, G.O.L. Jones, M.Lester. R.V.Lewis, H. Lühr, D. Orr, M. Pinnock, G.D. Reeves, P.J.S. Williams , T.K. Yeoman, Radar observations of auroral zone flows during a multiple-onset substorm, Ann. Geophysicae, 13, 1144-1163, 1995.

Neubert, T., J.L. Burch, and S.B. Mende, The SEPAC artificial aurora, Geophys. Res. Lett., 22, 2469, 1995.

Neubert, T., E. Ungstrup, and B. Gilchrist, AMPAS - a new active experiments mission, Adv. Space Res., 15, (12), 3-12, 1995.

Nishikawa, K.-I., O. Buneman, and T. Neubert,, New aspects of whistler waves driven by an electron beam studied by a 3-D electromagnetic code, Adv. Space Res., 15, (12), 17-20, 1995.

Olsen, N. and M. Kiefer, Geomagnetic daily variations produced by a QBO in thermospheric prevailing winds, J. Atmos. Terr. Phys., 57, 1583-1589, 1995.

Ranta, H., H. Yamagishi, P. Stauning, Twilight anomaly, midday recovery and cutoff latitudes during the intense polar cap absorption event of March 1991, Ann. Geophys., 13, 262-276.

Stauning, P., Polar lacuna on ionograms. E- of F-region processes?, Letter to the editor. Ann. Geophys., 13, 450-453, 1995.

Stauning, P. Progressing IMF BY-related polar ionospheric convection disturbances, J. Geomag. Geoelectr., 47, 735-757, 1995.

Stauning, P., C.R. Clauer, T.J Rosenberg, E. Friis-Christensen, and R. Sitar, Observations of solar-wind-driven progression of interplanetary magnetic field BY-related dayside ionospheric disturbances. J. Geophys. Res., 100, 7567-7585, 1995.

Stauning, P., H. Yamagishi, M. Nishino, and T.J. Rosenberg, Dynamics of Cusp-latitude absorption events observed by imaging riometers, J. Geomag. Geoelectr., 47, 823-845, 1995.

Umstadter, D., J. Kim, E. Esaray, E. Dodd, and T. Neubert, Resonant laser-driven plasma waves for electron acceleration, Phys. Rev. E., 51, 3484, 1995.

1994

Beaujardiere, O. de la, L.R. Lyons, J.M. Ruohoniemi, E. Friis-Christensen, C. Danielsen, F.J. Rich, and P.T. Newell, Quiet-time intensifications along the poleward auroral boundary near midnight, J. Geophys. Res., 99, 287, 1994.

Clauer, C.R., J.D. Kelly, T.J. Rosenberg, C.E. Rasmussen, P. Stauning, E. Friis-Christensen, R.J. Niciejewski, T.L. Killeen, S.B. Mende, Y. Zambre, T.E. Weymouth, A. Prakash, S.E. McDaniel, G.M. Olson, T.A. Finholt, and D.E. Atkins, New project to support scientific collaboration electronically, EOS Transactions, 75, 294-298, 1994.

Despirak, I., A. Lubchich, A. Yahnin, Yu.I. Galperin, S. Vennerstrøm, O. Aulamo, J. Craven, T. Potemra, Regions of cusplike precipitation in day side high latitude during steady magnetospheric convection, Geomagnetism and Aeronomy, 34, 5, 1994.

Fox, N.J., M. Lockwood, S.W.H. Cowley, M.P. Freeman, E. Friis-Christensen, D.K. Milling, M. Pinnock, and G.D. Reeves, EISCAT observations of unusual flows in the morning sector associated with weak substorm activity, Ann. Geophys., 12, 541, 1994.

Lu, G., A.D. Richmond, B.A. Emery, P.H. Reiff, O. de la Beaujardiere, F.J. Rich, F. Denig, H.W. Kroehl, L.R Lyons, J.M. Ruohoniemi, E. Friis-Christensen, H. Opgenoorth, M.A.L. Persson, R.P. Lepping, A.S. Rodger, T. Hughes, A. McEwin, S. Dennis, R. Morris, G. Bums, and L. Tomlinson, Interhemispheric asymmetry of the high-latitude ionospheric convection pattern, J. Geophys. Res., 99, 6491, 1994.

Olsen, N., A 27-month periodicity in low latitude geomagnetic field and its connection to the stratospheric QBO, Geophysic. Res. Lett., 21, 1125-1128, 1994.

Ranta, H., A. Ranta, P. Stauning, Z.Ts. Rapoport, V.M. Sinelnikov, S. Kirkwood, J. Lastovicka, and A.K. Knyazev, Morphology of the D- and E-regions at high latitudes in the northern hemisphere during the DYANA campaign in 1990, J. Atmos. Terr. Phys., 56, 1933-1945, 1994.

Sandholt, P.E., C.J. Farrugia, L.F. Burlaga, J.A. Holtet, J. Moen, B. Lybeck, B. Jacobsen, D. Opsvik, A. Egeland, R. Lepping, A.J. Lazarus, T. Hansen, A. Brekke, and E. Friis-Christensen, Cusp/cleft auroral activity in relation to solar wind dynamic pressure, interplanetary magnetic field Bz and By, J. Geophys. Res., 99, 17323, 1994.

Stauning, P., Coupling of IMF BY variations into the polar ionospheres through interplanetary field- aligned currents, J. Geophys. Res., 99, 17,309-17,322, 1994.

Stauning, P., E. Friis-Christensen, O. Rasmussen, and S. Vennerstrøm, Progressing polar convection disturbances: Signature of an open magnetosphere, J. Geophys. Res., 99, 11,303-11,317, 1994.

Stauning, P., T.J. Rosenberg, C.R. Clauer, E. Friis-Christensen, and O. Rasmussen, Progressing dayside polar radio wave absorption events and convection disturbances, In: Physical signatures of Magnetospheric baundary layer processes, Ed. J. Holtet and A. Egeland, pp. 125-138, Kluwer Acad. Publ., 1994.

Vo, H.B., J.S. Murphree, R.D. Elphinstone, R.C. Elphic, E. Friis-Christensen, H. Luhr, and D.G. Sibeck, Multipoint observations of a dayside transient event, J. Geophys. Res., 99, 13409, 1994.

Wang, Z., T.J. Rosenberg, P. Stauning, S. Basu, G. Crowley, Calculations of riometer absorption associated with F region plasma structures based on Sondre Stromfjord incoherent scatter radar observations, Radio Science, 29, 209-215, 1994.

Yahnin, A., M. Malkov, V.A. Sergeev, R.J. Pellinen, O. Aulamo, S. Vennerstrøm, E. Friis- Christensen, K. Lassen, C. Danielsen, J. D. Craven, C. Deehr, and L. A. Frank, Features of steady magnetospheric convection, J. Geophys. Res., 99, 4039, 1994.

1993

Clauer, C.R., D.E. Atkins, T.E. Weymouth, G.M. Olson, R. Niciejewski, T.A. Finholt, A. Prakash, C.E. Rasmussen, T. Killen, T.J. Rosenberg, D. Detrick, J.D. Kelly, Y.Zambre, C. Heinselman, P. Stauning, E. Friis-Christensen, S.B. Mende, A prototype Upper Atmospheric Research Collaboratory, EOS Trans. Amer. Geophys. Union, 74, 267, 1993.

Knipp, D.J., B.A. Emery, , A.D. Richmond, E. Friis-Christensen et al., Ionospheric convection response to a magnetic cloud: A case study for 14 January 1988, J. Geophys. Res., 98, 19273- 19292, 1993.

Morelli, J.P., R. Bunting, S.W.H. Cowley, C.J. Farrugia, M.P. Freeman, E. Friis-Christensen et al., Plasma flow bursts in the nightside auroral zone ionosphere and their relation to geomagnetic activity, Adv. Space Res., 13, (4), 135-138, 1993.

Ranta, H., A. Ranta, S.M. Yousef, J. Burns and P. Stauning, D-Region Observations of Polar Cap Absorption Events during the EISCAT Operation in 1981-89, J. Atmos. Terr. Sci. 55, 751-766, 1993.

1992

Potemra, T.A., R.E. Erlandsen, R. Arnoldy, L.J. Zanetti, J. Woch, and E. Friis-Christensen, The dynamic cusp, J. Geophys. Res., 97, 2835-2844, 1992.

Friis-Christensen, E., Electric field and current coupling at high latitudes, J. Geomag. Geoelectr., 43, Suppl., 311-324, 1991.

1991

Beaujardiere, O. de la, L.R. Lyons, and E. Friis-Christensen, Sondrestrom radar measurements of the reconnection electric field, J. Geophys. Res., 96, pp. 13907-13912, 1991.

Friis-Christensen, E. and K. Lassen, Large scale distribution of discrete auroras and field-aligned currents, in Auroral Physics, edited by C.I. Meng, M. Rycroft, and L. Frank, Cambridge University Press, Cambridge, England, pp. 369-380, 1991.

Friis-Christensen, E., and K. Lassen, Length of the solar cycle: An indicator of solar activity closely associated with climate, Science, 254, 698-700, 1991.

Lassen, K., and E. Friis-Christensen, Driven and unloading electrojets during the main phase of a magnetic storm, in Magnetospheric Substorms, T. Potemra and T. Iijima (ed), AGU Geophysical Monograph 64, Washington, D.C., pp. 399-407, 1991.

Pulkinen, T.I., R.J. Pellinen, H.E.J. Koskinen, H.J. Opgenoorth, J.S. Murphree, V. Petrov, A. Zaitzev, and E. Friis-Christensen, Auroral Signatures of substorm recovery phase: A case study, in Magnetospheric Substorms, T. Potemra and T. Iijima (ed), AGU Geophysical Monograph 64, Washington D.C., pp. 333-341, 1991.

Vennerstrøm, S., E. Friis-Christensen, O.A. Troshichev, and V.G. Andresen, Comparison between the Polar Cap index, PC, and the auroral electrojet indices, AE, AL, and AU, J. Geophys. Res., 96, pp 101-113, 1991.