The asymmetric geospace as displayed during the geomagnetic storm on 17 August 2001

This study was supported by the Research Council of Norway under contract 223252/F50 (CoE). Stephen E. Milan was supported by the Science and Technology Facilities Council, UK, grant no ST/N000749/1. The data described in this paper are available from the authors on request (nikolai.ostgaard@uib.no). We thank Stephen B. Mende and the IMAGE FUV team at the Space Sciences Laboratory at UC Berkeley for the FUV data. The images were processed using the FUVIEW3 software (http://sprg.ssl.berkeley.edu/image/). We thank Rae Dvorsky and the Polar VIS team at the University of Iowa for the VIS Earth data. The VIS Earth images were downloaded from NASA's Space Physics Data Facility (ftp://cdaweb.gsfc.nasa.gov/pub/data/polar/vis/vis_earth-camera-full/) and processed using the XVIS 2.40 software (http://vis.physics.uiowa.edu/vis/software/). We thank Charles Smith for the ACE magnetic field data and David McComas for the ACE solar wind data. We acknowledge use of NASA/GSFC's Space Physics Data Facility's OMNIWeb service and OMNI data. The DMSP SSIES data were downloaded from http://cindispace.utdallas.edu/DMSP/. We gratefully acknowledge the Center for Space Sciences at the University of Texas at Dallas and the US Air Force for providing the DMSP thermal plasma data. The authors thank the NOAA's National Geophysical Data Center (NGDS) for providing NOAA POES data. The CHAMP mission was sponsored by the Space Agency of the German Aerospace Center (DLR) through funds of the Federal Ministry of Economics and Technology, following a decision of the German Federal Parliament (grant code 50EE0944). We thank Patricia Ritter for processing the data. For the ground magnetometer data we gratefully acknowledge the following: Intermagnet; USGS, Jeffrey J. Love; CARISMA, Ian Mann; CANMOS; the S-RAMP database, K. Yumoto and K. Shiokawa; the SPIDR database; AARI, Oleg Troshichev; the MACCS program, M. Engebretson; Geomagnetism Unit of the Geological Survey of Canada; GIMA; MEA