2006
DOI: 10.1029/2005jd006008
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Microwave radiative transfer model validation

Abstract: [1] Within the geophysical retrieval algorithm for AIRS/AMSU/HSB, a forward radiative transfer model is used to calculate microwave brightness temperatures. Components of the microwave forward model include a surface emissivity model, the influence of surface scattering characteristics on reflected downwelling emission from the atmosphere, and an atmospheric transmittance model. Over the ocean, the surface model parameters are shown to be related to near-surface wind speed. Calculations using the atmospheric t… Show more

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Cited by 21 publications
(16 citation statements)
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“…Also shown are width values for the equivalent transitions in the H 2 O ν 2 band in the infrared. Laboratory measurements for the widths of these infrared transitions have extensively been validated, are reported to be known to high [29], [30] uses the value from [23] while the HITRAN 2000 plus updates value [25] was the one endorsed by Liljegren et al [31]. For the 183-GHz line, the most recent version of the Rosenkranz microwave absorption model [30] uses the value from [23].…”
Section: A Monortmmentioning
confidence: 98%
“…Also shown are width values for the equivalent transitions in the H 2 O ν 2 band in the infrared. Laboratory measurements for the widths of these infrared transitions have extensively been validated, are reported to be known to high [29], [30] uses the value from [23] while the HITRAN 2000 plus updates value [25] was the one endorsed by Liljegren et al [31]. For the 183-GHz line, the most recent version of the Rosenkranz microwave absorption model [30] uses the value from [23].…”
Section: A Monortmmentioning
confidence: 98%
“…The HITRAN database is widely used by the scientific community for radiative transfer computations. However, unlike the millimeter-wave propagation model (MPM) [7] and the R98-mod models validated in, for example, [8] and [9], the HITRAN database, in the region of the microwave oxygen absorption, has never been systematically validated by the comparison of the modeled and measured BTs. The advantages of using the ground-based versus satellite measurements to perform model validations reside in the fact that, with the ground-based instrumentation, calibration issues are much easier to identify.…”
mentioning
confidence: 97%
“…Temperature profiles are retrieved using an algorithm [6] developed for AIRS/AMSU/HSB, and adapted for use with NOAA-16 AMSU-A/B. A forward radiative transfer model is used to calculate microwave brightness temperatures.…”
Section: Temperature Profilesmentioning
confidence: 99%
“…The ECMWF model profiles show good agreement with radiosonde measurements, however AMSU profiles show deviations, especially near the surface. A possible reason for the deviations of profiles in the Baltic area, or indeed any location close to a coastline, is the simplified estimate of the land fraction within the AMSU-A footprint, which is set either to 0 or 1 according to the surface elevation at the center of the footprint; this is a difference from the version of the algorithm in [6]. Therefore the forward calculation may be starting with an a-priori surface emissivity that is very different from the average over the AMSU-A footprint.…”
Section: Temperature Profilesmentioning
confidence: 99%