Journal
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
Volume 53, Issue 1, Pages 190-206Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGRS.2014.2320309
Keywords
Global Navigation Satellite System (GNSS) radio occultation (RO); heavy rain; remote sensing precipitation
Categories
Funding
- Spanish Ministry of Economy and Competitiveness [AYA2011-29183-C02-02, ACI2010-1089, ACI2009-1023]
- Fondo Europeo de Desarrollo Regional (FEDER)
- National Aeronautics and Space Administration (NASA) [ROSES 10-GEOIM10-0018, ROSES NNH10ZDA001N, NNH10ZDA001N-GEOIM, NNH10ZDA001N-GEODESY]
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [1033112] Funding Source: National Science Foundation
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A Global Navigation Satellite System (GNSS) radio occultation (RO) experiment is being accommodated in the Spanish low Earth orbiter for Earth Observation PAZ. The RO payload will provide globally distributed vertical thermodynamic profiles of the atmosphere suitable to be assimilated into weather numerical prediction models. The Ground Segment services of the U.S. National Oceanographic and Atmospheric Administration and standard-RO processing services by University Corporation for Atmospheric Research (USA) will be available under best effort basis. Moreover, the mission will run, for the first time, a double-polarization GNSS RO experiment to assess the capabilities of polarimetric GNSS RO for sensing heavy rain events. This paper introduces the Radio-Occultation and Heavy Precipitation experiment aboard PAZ and performs a theoretical analysis of the concept. The L-band GNSS polarimetric observables to be used during the experiment are presented, and their sensitivity to moderate to heavy precipitation events is evaluated. This study shows that intense rain events will induce polarimetric features above the detectability level.
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