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a new era in global temperature monitoring with the advanced microwave sounding unit (amsu)The launch of the first Advanced Microwave Sounding Unit (AMSU) on the NOAA-15 spacecraft on 13 May 1998 marked a significant advance in our ability to monitor global temperatures. Compared to the Microwave Sounding Units (MSU) flying since 1978 on the TIROS-N series of NOAA polar orbiters, the AMSU offers better horizontal, vertical, and radiometric resolutions. It will allow routine monitoring of 1 1 (mostly) separate layers, compared to 2 or 3 with the MSU, including layers in the middle and upper stratosphere (2.5 hPa) where increasing carbon dioxide concentrations should be causing a cooling rate of about 1 deg. C per decade. More precise limb corrections combined with low noise will allow identification of subtle spatial temperature patterns associated with global cyclone activity.
Document ID
Document Type
Reprint (Version printed in journal)
Spencer, Roy W.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Braswell, William D.
(Nichols Research Corp. Huntsville, AL United States)
Christy, John R.
(Alabama Univ. Huntsville, AL United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1999
Subject Category
Environment Pollution
Distribution Limits
Work of the US Gov. Public Use Permitted.

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