منابع مشابه
Classification of hydrometeors using microwave brightness temperature data from AMSU-B over Iran
The Advanced Microwave Sounding Unit-B (AMSU-B) installed on the NOAA-15, 16, and 17 satellites, is the new generation of a series of microwave imagers/sounders that can sense atmospheric moisture and other hydrometeors through clouds. This paper demonstrates the potential of multi-frequency AMSU-B data for classifying different types of hydrometeors. Ten types of these hydrometers have been co...
متن کاملRetrieval of temperature and moisture profiles from AMSU-A and AMSU-B measurements
The NOAA-15 weather satellite carries the Advanced Microwave Sounding Units-A and -B (AMSU-A, AMSU-B) which measure thermal emission from an atmospheric oxygen band, two water lines, and several window frequencies. An iterated minimum-variance algorithm retrieves profiles of temperature and humidity in the atmosphere from this data. Relative humidity is converted into absolute humidity with use...
متن کاملImproved use of AMSU-B data in the UK Met Office regional models
Regional Numerical Weather Prediction (NWP) models provide enhanced detail for forecast quantities such as cloud cover, visibility and rainfall. Previous work at the Met Office has shown that improving the humidity analysis through the assimilation of AMSU radiances improves the accuracy of these quantities. This paper highlights several new developments in the assimilation of AMSU-B radiances ...
متن کاملIntercomparison of tropical tropospheric humidity in GCMs with AMSU-B water vapor data
[1] We make use of microwave measurements of the tropical free tropospheric relative humidity (FTH) to evaluate the extent to which the water vapor distribution in four general circulation models is faithful to reality. The comparison is performed in the tropics by sorting the FTH in dynamical regimes defined upon the 500 hPa vertical velocity. Because microwave radiation penetrates non-rainy a...
متن کاملThe impact of ozone lines on AMSU-B radiances
[1] The impact of ozone lines on Advanced Microwave Sounding Unit-B (AMSU-B) radiances was investigated using a line-by-line radiative transfer model. The impact is found to be the largest for channel 18 (183.31 ± 1.00 GHz), with a maximum up to about 0.5 K. The channels 17 (150 GHz) and 20 (183.31 ± 7.00 GHz) are also marginally affected by the ozone lines. The magnitude of the impact shows an...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2005
ISSN: 0094-8276
DOI: 10.1029/2005gl024747