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THE USE OF VISIBLE DATA FOR IMPROVIN...

The University of Wisconsin - Madison.

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THE USE OF VISIBLE DATA FOR IMPROVING VAS SATELLITE SOUNDINGS.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	THE USE OF VISIBLE DATA FOR IMPROVING VAS SATELLITE SOUNDINGS./
Author:	LIU, GIN-RONG.
Description:	143 p.
Notes:	Source: Dissertation Abstracts International, Volume: 47-09, Section: B, page: 3815.
Contained By:	Dissertation Abstracts International47-09B.
Subject:	Physics, Atmospheric Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=8623686

THE USE OF VISIBLE DATA FOR IMPROVING VAS SATELLITE SOUNDINGS.
LIU, GIN-RONG.

THE USE OF VISIBLE DATA FOR IMPROVING VAS SATELLITE SOUNDINGS. - 143 p.

Source: Dissertation Abstracts International, Volume: 47-09, Section: B, page: 3815.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 1986.

The purpose of this thesis is to develop, test, and apply an improved method for handling clouds in the process of retrieving atmospheric vertical soundings from VAS geostationary radiance observations. The method is unique in that it makes use of visible data for the first time. The technique enables estimates of fractional cloud amount for each 8-16 Km infrared field of view (FOV) using high resolution, 1 Km, visible data. Cloud top pressure is calculated using the CO2 slicing method or directly from the VAS observed 11 micron window channel overcast brightness temperature and the temperature profile. Cloud emissivity is obtained from the cloud level atmospheric temperature, which corresponds to the cloud top pressure derived from the CO2 slicing method, and VAS 11 micron window channel brightness temperature. With the aid of effective cloud amount and cloud top pressure, the proper clear and cloudy weighting functions of the radiative transfer equation (RTE) are specified, and a direct physical inverse solution (e.g., the simultaneous physical retrieval method) of the RTE is used to produce vertical temperature and moisture soundings. In addition to giving cloud amount, cloud top temperature, cloud emissivity and cloud top pressure estimates, the surface skin temperature is also estimated as part of the temperature and water vapor profile retrieval process. The results obtained from its application are compared with the surface hourly reports, radiosonde observations and sounding determinations by the CIMSS (Cooperative Institute for Meteorological Satellite Studies) operational method of profile retrieval. The intercomparisons reveal significant improvements both in the reliability and accuracy in atmospheric profile retrieval using visible channel data.Subjects--Topical Terms:

1019431
Physics, Atmospheric Science.

THE USE OF VISIBLE DATA FOR IMPROVING VAS SATELLITE SOUNDINGS.
LDR:02533nam 2200229 a 45 001 853286
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008 100701s1986 ||||||||||||||||| ||||| d
035 $a (UMI)AAI8623686
035 $a AAI8623686
040 $a UMI $c UMI
100 1 $a LIU, GIN-RONG. $3 1019527
245 1 4 $a THE USE OF VISIBLE DATA FOR IMPROVING VAS SATELLITE SOUNDINGS.
300 $a 143 p.
500 $a Source: Dissertation Abstracts International, Volume: 47-09, Section: B, page: 3815.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 1986.
520 $a The purpose of this thesis is to develop, test, and apply an improved method for handling clouds in the process of retrieving atmospheric vertical soundings from VAS geostationary radiance observations. The method is unique in that it makes use of visible data for the first time. The technique enables estimates of fractional cloud amount for each 8-16 Km infrared field of view (FOV) using high resolution, 1 Km, visible data. Cloud top pressure is calculated using the CO2 slicing method or directly from the VAS observed 11 micron window channel overcast brightness temperature and the temperature profile. Cloud emissivity is obtained from the cloud level atmospheric temperature, which corresponds to the cloud top pressure derived from the CO2 slicing method, and VAS 11 micron window channel brightness temperature. With the aid of effective cloud amount and cloud top pressure, the proper clear and cloudy weighting functions of the radiative transfer equation (RTE) are specified, and a direct physical inverse solution (e.g., the simultaneous physical retrieval method) of the RTE is used to produce vertical temperature and moisture soundings. In addition to giving cloud amount, cloud top temperature, cloud emissivity and cloud top pressure estimates, the surface skin temperature is also estimated as part of the temperature and water vapor profile retrieval process. The results obtained from its application are compared with the surface hourly reports, radiosonde observations and sounding determinations by the CIMSS (Cooperative Institute for Meteorological Satellite Studies) operational method of profile retrieval. The intercomparisons reveal significant improvements both in the reliability and accuracy in atmospheric profile retrieval using visible channel data.
590 $a School code: 0262.
650 4 $a Physics, Atmospheric Science. $3 1019431
690 $a 0608
710 2 $a The University of Wisconsin - Madison. $3 626640
773 0 $t Dissertation Abstracts International $g 47-09B.
790 $a 0262
791 $a Ph.D.
792 $a 1986
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=8623686