Barkmann, Becker, Hoque, Jakowski, Maass, Mayer, Missling, Tegler, Wehrenpfennig: SWACI-II. Space Weather Application Center - Ionosphere, Zwischenbericht; Förderkennzeichen: AU 07 008 2007; Laufzeit des Vorhabens: 01.07.2007 bis 31.12.2010; Exzellenzförderprogramm des Landes Mecklenburg-Vorpommern

Saiger, Peter; Tiede, Michael; Preusker, Frank; Wählisch, Marita; Wehrenpfennig, Andreas; Asche, Hartmut; Oberst, Jürgen; Jaumann, Ralf (2006): Visualisation and analysis of Mars data based on ArcOBJECTS., IAPRS&SIS, 36 (4), S. 347 - 351 ISPRS, Commission iV, WG IV/9, Goa, (India), 2006-09-27 - 2006-09-30

Jakowski, N.; Heise, S.; Wehrenpfennig, A.; Tsybulya, K.; Stankov, S. M.; Wilken, V.; Reigber, Ch.; Lühr, H. (2004): Ionospheric sounding by means of GPS measurements onboard CHAMP, Joint CHAMP/GRACE Science Meeting (Potsdam 2004).

N. Jakowski, K. Tsybulya, S. M. Stankov, A. Wehrenpfennig, About the Potential of GPS Radio Occultation Measurements for Exploring the Ionosphere, in C. Reigber, H. Lühr, P. Schwintzer, and J. Wickert (Eds.), Earth Observation with CHAMP, Results from Three Years in Orbit, Springer-Verlag Berlin, 2004, pp. 441-446.

N. Jakowski, S. Heise,  A. Wehrenpfennig, and K. Tsybulya, Ionospheric Radio Occultation Measurements and Space Weather in: G. Kirchengast, U. Foelsche, A.K. Steiner (Eds), Occultations for probing Atmosphere and Climate, Springer, Berlin, pp 383-392, 2004.

P. Spalla, N. Jakowski, A. Wehrenpfennig, Paul S. Spencer, and C.N. Mitchell, Verification of CHAMP radio occultation observations in the ionosphere using MIDAS, First CHAMP Science Mission Results for Gravity, Magnetic and Atmospheric Studies, Eds: Ch. Reigber, H. Lühr, P. Schwintzer, Springer Verl., Berlin, Heidelberg New Yorck, ISBN 3-540-00206-5, pp, 545-550, 2003

N. Jakowski, A. Wehrenpfennig, S. Heise, Ch. Reigber, H. Lühr: Status of ionospheric radio occultation CHAMP data analysis and validation of higher level data products, First CHAMP Science Mission Results for Gravity, Magnetic and Atmospheric Studies, Eds: Ch. Reigber, H. Lühr, P. Schwintzer, Springer Verl., Berlin, Heidelberg New Yorck, ISBN 3-540-00206-5,  pp, 462-472, 2003

S. Heise, N. Jakowski, A. Wehrenpfennig, Ch. Reigber, and H. Lühr, Initial Results on Ionosphere/Plasmasphere Sounding Based on GPS Data Obtained Onboard CHAMP, First CHAMP Science Mission Results for Gravity, Magnetic and Atmospheric Studies, Eds: Ch. Reigber, H. Lühr, P. Schwintzer, Springer Verl., Berlin, Heidelberg New Yorck, ISBN 3-540-00206-5,  pp, 408-414, 2003

N. Jakowski, S. Heise,  A. Wehrenpfennig, and K. Tsybulya, Ionosphere sounding by ground and space based GNSS measurements, OIST-4 Proceedings,  4^th Oerstedt International Science Team Conference,Copenhagen 23-27 September 2002, Eds: P. Stauning et al., ISSN 0905-3263, ISBN 87-7478-484-6, pp 203-210, 2003

Spalla, P., N. Jakowski, A. Wehrenpfennig, Paul S. Spencer, and C.N. Mitchell, Verification of CHAMP radio occultation observations in the ionosphere using MIDAS, First CHAMP Science Mission Results for Gravity, Magnetic and Atmospheric Studies, Eds: Ch. Reigber, H. Lühr, P. Schwintzer, Springer Verl., Berlin, Heidelberg New Yorck, ISBN 3-540-00206-5, 545-550, 2003

Jakowski, N., A. Wehrenpfennig, S. Heise, Ch. Reigber and H. Lühr: „Status of Ionospheric Radio Occultation CHAMP Data Analysis and Validation of Higher Level Data Products“, Proceedings First CHAMP Science Meeting, Potsdam, Springer, 2003

Heise, S., N. Jakowski, A. Wehrenpfennig, Ch. Reigber, H. Lühr, “Initial Results on Iono­sphere/Plasmasphere Sounding Based on GPS Data Obtained on Board CHAMP”, First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, Eds. Ch. Reig­ber, H. Lühr, P. Schwintzer, 408-414, Springer Series, ISBN 3-540-00206-5, 2003

 Jakowski, N., A. Wehrenpfennig, S. Heise , and I. Kutiev, Space Weather Effects on Transio­nospheric Radio Wave Propagation on 6 April 2000, Acta Geod. Geoph. Hung., 37(2-3), 213-220, 2002

 Jakowski, N., A. Wehrenpfennig, S. Heise, Ch. Reigber, H. Lühr, Initial GPS Radio Occultation Measurements of the Ionosphere onboard CHAMP , Acta Geod. Geoph. Hung., 37(2-3), 221-226,2002.

 Jakowski, N., S. Heise, A. Wehrenpfennig, K. Tsybulya: “Ionospheric Radio Occultation Measurements and Space Weather”, Proceedings OPAC-1 International Workshop, Graz, 16-20 September, submitted, 2002

 Wehrenpfennig A., N. Jakowski, and S. Heise: „Processing Systems for CHAMP Radio Occultations and for Space Weather Data“ ”, Talk, CHAMP science meeting, GeoForschungszentrum, Potsdam, 2002

 S. Heise, N. Jakowski, A. Wehrenpfennig, Ch. Reigber, H. Lühr: “Initial Results on Ionosphere/Plasmasphere Sounding Based on GPS Data Obtained Onboard CHAMP”, Poster, CHAMP science meeting, GeoForschungszentrum, Potsdam, Jan. 2002

 T. Schmidt, J. Wickert, Ch. Marquardt, G. Beyerle, Ch. Reigber, A. Wehrenpfennig: “The Near Real Time Data Processing System for GPS Radio Occultation Data from CHAMP at GFZ Potsdam”, submitted to EGS XXVII General Assembly, Nice, France, April 2002

 Jakowski, N., A. Wehrenpfennig, S. Heise, Ch. Reigber, H. Lühr, L. Grunwaldt and T.K. Meehan: “GPS radio occultation measurements of the ionosphere from CHAMP: early results”, Geophys. Res. Lett., 29, doi:10.1029/2001GL014364, 2002

 Heise S., N. Jakowski, A. Wehrenpfennig, Ch. Reigber, H. Lühr: „Sounding of the Topside Ionosphere / Plasmasphere Based on GPS Measurements from CHAMP: Initial Results“, Geophys. Res. Lett. 29, DOI:10.1029/2002GL014738, 2002

 Jakowski N., S. Heise, A. Wehrenpfennig, S. Schlüter, R. Reimer: “GPS/GLONASS based TEC measurements as contributor for space weather forecast, J. Atm. Solar-Terr. Phys., 64, 729-735, 2002

 Jakowski N., A. Wehrenpfennig, S. Heise, and I. Kutiev, „Space Weather Effects on Transionospheric Radio Wave Propagation”, Talk, April 2000, COST271, Sopron, 2001

 Wehrenpfennig A., N. Jakowski, and D. Klähn: „Use of the GAVDOS Observatory for Operational GNSS Measurements“, International Workshop „GAVDOS“, The Interdisciplinary Research Observatory of Southernmost Europe Rose Project, Talk, Chania, Greece, Sept. 2001

 Jakowski N., A. Wehrenpfennig, S. Heise, Ch. Reigber, H. Lühr: „GPS Radio Occultation Measurements of the Ionosphere on CHAMP - Initial Results”,  COST271, Sopron, 2001

Wehrenpfennig A., N. Jakowski, and D. Klähn: „Processing Systems for Space Weather Data“, Poster, ESA Space Weather Workshop, ESA-ESTEC, Nordwiijk, Dez. 2001

S. Heise, N. Jakowski, A. Wehrenpfennig, Ch. Reigber and H. Lühr: „Initial Results on Ionosphere/Plasmasphere Sounding Based on GPS Data Obtained Onboard CHAMP“, Poster, ESA Space Weather Workshop, ESTEC, Noordwijk, Dez. 2001

Stankov, S.M, I.Kutiev, N.Jakowski, A.Wehrenpfennig: „A new method for Total Electron Content forecasting using Global Positioning System measurements“, Proc. ESTEC 'Space weather workshop', 17-19 Dec. 2001, Noordwijk, The Netherlands

Jakowski N., A. Wehrenpfennig  and S. Heise: „Ionosphere Monitoring by ground and space based GNSS techniques”, International Space Weather Workshop, Boston, June 2001

Wehrenpfennig A.: „Aufbau von Monitoringsystemen als Voraussetzung für die Vorhersage“, Vortrag, 'Nationaler Workshop zum Weltraumwetter', Vortrag & Beitrag zum Tagungsber. 'Nationaler Workshop zum Weltraumwetter', DLR Neustrelitz, 26-27 Oktober 2000, (Herausg.: D.Adrian, N. Jakowski, A. Wehrenpfennig), 141-148, 2001

Jakowski, N., Wehrenpfennig, A., Heise, S.: „Verifikation ionosphärischer Einflüsse auf satellitengestützte Navigationssysteme“, Vortrag & Beitrag zum Tagungsber. 'Nationaler Workshop zum Weltraumwetter', DLR Neustrelitz, 26-27 Oktober 2000, (Herausg.: D. Adrian, N. Jakowski, A. Wehrenpfennig), 133-140, 2001

 Wehrenpfennig, A., N. Jakowski, J. Wickert: „A dynamically configurable system for operational processing of space weather data”, Phys. Chem. Earth (C), Vol. 26, No. 8, 2001

 Jakowski, N., Wehrenpfennig, A., Heise, S.: „GNSS based TEC estimations for continuous ionosphere space weather now and forecast”, Poster, presented at ESA Workshop on the Utilization of a Future  European Space Weather Service, ESTEC, 12 December 2000,

 Jakowski N., S. Heise, A. Wehrenpfennig, S. Schlüter: „TEC Monitoring by GPS- a possible Contribution to Space Weather Monitoring”, Poster, presented at EGS General Assembly, Nice, France, 2000

 Wehrenpfennig, A., N. Jakowski, J. Wickert: „A dynamically configurable system for operational processing of space weather data”, Talk, presented at EGS General Assembly, Nice, 2000

Jakowski N., S. Heise, A. Wehrenpfennig, S. Schlüter, R. Reimer, W. Mai: „Use of GPS/GLONASS measurements for monitoring Space Weather effects in the ionosphere”, Poster, presented at COSPAR, Warsaw, 2000

 Marquardt C. , Ch. Reigber, N. Jakowski, A. Wehrenpfennig and  J. Wickert, “The CHAMP mission - Atmospheric Profiling with GPS”, Poster presented at the 4th International Conference on Modelling of Global Climate Change and Variability, 13 - 17 December 1999, Hamburg, Germany, 1999

 Jakowski, N., S.Heise, K. Hocke, A. Wehrenpfennig, S. Schlüter: “Capabilities of GPS based TEC measurements for Monitoring Space Weather Effects”, Talk, Kleinheubacher Tagung 1999, 27 September - 1 October 1999

 Pavelyev, A., K. Hocke, O. Yakovlev, N. Jakowski, J. Wickert, S. Matugov, A. Kucherjavenkov,
A. Wehrenpfennig, A. Zakharov: “Radioholographic method for atmosphere sounding using small satellite”, Small Satellites for Earth Observation:  Digest of 2nd IAA Symposium, ed. by H.P. Röser et al., Wissenschaft und Technik Verlag, Berlin, 1999

 Wickert J., Jakowski N., Wehrenpfennig A., Hocke K., Heise S., „CHAMP Atmosphere/Ionosphere Processor”, Proc. IGS-GFZ-JPL Workshop on Low Earth Orbiter Missions, March 9-11, 1999, Potsdam, Germany ,1999