GPS radio occultation with CHAMP and GRACE:: A first look at a new and promising satellite configuration for global atmospheric sounding

被引：102

作者：

Wickert, J ^{[1
]}

Beyerle, G ^{[1
]}

König, R ^{[1
]}

Heise, S ^{[1
]}

Grunwaldt, L ^{[1
]}

Michalak, G ^{[1
]}

Reigber, C ^{[1
]}

Schmidt, T ^{[1
]}

机构：

[1] Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany

来源：

ANNALES GEOPHYSICAE | 2005年 / 23卷 / 03期

关键词：

meteorology and atmospheric dynamics; instruments and techniques; radio science; remote sensing;

D O I：

10.5194/angeo-23-653-2005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

CHAMP (CHAllenging Minisatellite Payload) and GRACE (Gravity Recovery And Climate Experiment) formed a satellite configuration for precise atmospheric sounding during the first activation of the GPS (Global Positioning System) radio occultation experiment aboard GRACE on 28 and 29 July 2004. 338 occultations were recorded aboard both satellites, providing globally distributed vertical profiles of refractivity, temperature and specific humidity. The combined set of CHAMP and GRACE profiles shows excellent agreement with meteorological analysis. Almost no refractivity bias is observed between 5 and 30km, the standard deviation is between 1 and 2% within this altitude interval. The GRACE satellite clock stability is significantly improved in comparison with CHAMP. This allows for the application of a zero difference technique for precise analysis of the GRACE occultation data.

引用

页码：653 / 658

页数：6

共 24 条

[1] Lower troposphere refractivity bias in GPS occultation retrievals [J].

Ao, CO ;

Meehan, TK ;

Hajj, GA ;

Mannucci, AJ ;

Beyerle, G .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2003, 108 (D18)

[2] Atmospheric sounding by global navigation satellite system radio occultation: An analysis of the negative refractivity bias using CHAMP observations [J].

Beyerle, G ;

Wickert, J ;

Schmidt, T ;

Reigber, C .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2004, 109 (D1)

[3]

Dunn C., 2003, GPS WORLD

[4]

FOELSCHE U, 2005, CHAMPCLIM PROJECT OV, P615

[5] A technical description of atmospheric sounding by GPS occultation [J].

Hajj, GA ;

Kursinski, ER ;

Romans, LJ ;

Bertiger, WI ;

Leroy, SS .

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2002, 64 (04) :451-469

[6] CHAMP and SAC-C atmospheric occultation results and intercomparisons [J].

Hajj, GA ;

Ao, CO ;

Iijima, BA ;

Kuang, D ;

Kursinski, ER ;

Mannucci, AJ ;

Meehan, TK ;

Romans, LJ ;

Juarez, MD ;

Yunck, TP .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2004, 109 (D6)

[7] Forecast impact experiment with GPS radio occultation measurements [J].

Healy, SB ;

Jupp, AM ;

Marquardt, C .

GEOPHYSICAL RESEARCH LETTERS, 2005, 32 (03) :1-4

[8] Full spectrum inversion of radio occultation signals [J].

Jensen, AS ;

Lohmann, MS ;

Benzon, HH ;

Nielsen, AS .

RADIO SCIENCE, 2003, 38 (03) :6/1-6/15

[9]

KONIG R, 2005, RECENT DEV CHAMP ORB

[10] Inversion and error estimation of GPS radio occultation data [J].

Kuo, YH ;

Wee, TK ;

Sokolovskiy, S ;

Rocken, C ;

Schreiner, W ;

Hunt, D ;

Anthes, RA .

JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN, 2004, 82 (1B) :507-531

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