Summary: Potential of Advanced Microwave Sounding Unit-A (AMSU-A) and
AMSU-B measurements for atmospheric temperature and humidity
profiling over land
and Laurence Eymard5
Received 5 August 2004; revised 1 December 2004; accepted 13 January 2005; published 13 April 2005.
 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°W60°E, 60°S60°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.
Citation: Karbou, F., F. Aires, C. Prigent, and L. Eymard (2005), Potential of Advanced Microwave Sounding Unit-A (AMSU-A)
and AMSU-B measurements for atmospheric temperature and humidity profiling over land, J. Geophys. Res., 110, D07109,