Open AccessPotential of Advanced Microwave Sounding Unit‐A (AMSU‐A) and AMSU‐B measurements for atmospheric temperature and humidity profiling over land
Author(s) -
Karbou Fatima,
Aires Filipe,
Prigent Catherine,
Eymard Laurence
Publication year - 2005
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2004jd005318
Subject(s) - advanced microwave sounding unit , depth sounding , environmental science , humidity , emissivity , remote sensing , atmospheric temperature , relative humidity , atmospheric sounding , meteorology , atmospheric sciences , microwave , geography , computer science , physics , cartography , telecommunications , optics
A neural network retrieval method has been applied to investigate AMSU‐A/AMSU‐B atmospheric temperature and humidity profiling capabilities over land. The retrieval method benefits from a reliable estimate of the land emissivity and skin temperature as well as first guess information regarding the temperature‐humidity profiles. It has been applied on a large geographic area (60°W–60°E, 60°S–60°N) and atmospheric situations (winter and summer). The retrieved RMS errors are within 2 K and 9% in temperature and relative humidity, respectively. Regardless of scanning conditions, vegetation types, and atmospheric situations, the algorithm retrieval results are satisfactory for both temperature and relative humidity. The retrieval approach has been evaluated by comparison with available in situ measurements.