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Detection of temperatures conducive to Arctic polar stratospheric clouds using CHAMP and SAC-C radio occultation data

de la Torre Juárez, M. und Marcus, S. und Dörnbrack, A. und Schrøder, T. M. und Kivi, R. und Iijima, B. A. und Hajj, G. A. und Mannucci, A. J. (2009) Detection of temperatures conducive to Arctic polar stratospheric clouds using CHAMP and SAC-C radio occultation data. Journal of Geophysical Research, 114 (D07112), Seiten 1-13. DOI: 10.1029/2008JD011261.

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Offizielle URL: http://www.agu.org/journals/jd/jd0907/2008JD011261/

Kurzfassung

We use global positioning system radio occultation (GPSRO) data from the Challenging Mini-Satellite Payload for Geophysical Research and Application (CHAMP) and Satélite de Applicaciones Científicas-C (SAC-C) low Earth orbiting satellites to investigate the occurrence of air with temperatures cold enough to allow the formation of polar stratospheric clouds (PSCs) during four successive Arctic winters spanning 2001 to 2005. The GPSRO data are validated and compared with analysis data from the European Centre for Medium-Range Weather Forecasts using a series of criteria designed to eliminate faulty soundings but retain profiles which do not differ too strongly from the model data. We find that GPSRO is able to detect more PSC-prone temperature profiles during winters with disturbed conditions (in particular during December 2001 and 2003) than the analysis, but that the model fully captures the extent of PSC-prone air in winters with strong, cold vortices (in particular December 2002 and January 2005). Examination of detailed profiles for December 2001 shows that this difference is due to the ability of GPSRO to detect short-vertical wavelength features which may represent either localized gravity or global-scale planetary waves. Since the GPSRO data are now being directly assimilated into operational analysis systems, the benefits of the higher vertical resolution retrievals it provides should become evident in future observational studies of PSC formation and ozone loss, particularly under the disturbed conditions noted in several recent winters.

Dokumentart:Zeitschriftenbeitrag
Titel:Detection of temperatures conducive to Arctic polar stratospheric clouds using CHAMP and SAC-C radio occultation data
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
de la Torre Juárez, M.California Inst. of Technology, Pasadena, CA, USA
Marcus, S.California Inst. of Technology, Pasadena, CA, USA
Dörnbrack, A.DLR
Schrøder, T. M.California Inst. of Technology, Pasadena, CA, USA
Kivi, R.Finnish Meteorological Inst., Sodankylä, FIN
Iijima, B. A.California Inst. of Technology, Pasadena, CA, USA
Hajj, G. A.California Inst. of Technology, Pasadena, CA, USA
Mannucci, A. J.California Inst. of Technology, Pasadena, CA, USA
Datum:2009
Erschienen in:Journal of Geophysical Research
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:114
DOI :10.1029/2008JD011261
Seitenbereich:Seiten 1-13
Status:veröffentlicht
Stichwörter:GPS radio occultation, Polar Stratospheric Clouds
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Atmosphären- und Klimaforschung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Wolkenphysik und Verkehrsmeteorologie
Hinterlegt von: Jana Freund
Hinterlegt am:12 Mai 2010 13:33
Letzte Änderung:23 Jan 2014 11:36

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