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Journal Article

GPS radio occultation with GRACE: Atmospheric profiling utilizing the zero difference technique

Authors
/persons/resource/gbeyerle

Beyerle,  Georg
1.1 GPS/GALILEO Earth Observation, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

/persons/resource/tschmidt

Schmidt,  Torsten
1.1 GPS/GALILEO Earth Observation, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

/persons/resource/michalak

Michalak,  Grzegorz
1.2 Global Geomonitoring and Gravity Field, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

/persons/resource/heise

Heise,  Stefan
1.1 GPS/GALILEO Earth Observation, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

/persons/resource/wickert

Wickert,  Jens
1.1 GPS/GALILEO Earth Observation, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Reigber,  C.
External Organizations;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

, 

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Citation

Beyerle, G., Schmidt, T., Michalak, G., Heise, S., Wickert, J., Reigber, C. (2005): GPS radio occultation with GRACE: Atmospheric profiling utilizing the zero difference technique. - Geophysical Research Letters, Vol. 32, 13, L13806.
https://doi.org/10.1029/2005GL023109


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_233484
Abstract
Radio occultation events recorded on 28–29 July 2004 by a GPS receiver aboard the GRACE-B satellite are analyzed. The stability of the receiver clock allows for the derivation of excess phase profiles using a zero difference technique, rendering the calibration procedure with concurrent observations of a reference GPS satellite obsolete. 101 refractivity profiles obtained by zero differencing and 96 profiles calculated with an improved single difference method are compared with co-located ECMWF meteorological analyses. Good agreement is found at altitudes between 5 and 30 km with an average fractional refractivity deviation below 1% and a standard deviation of 2–3%. Results from end-to-end simulations are consistent with these observations.