Estimating GATE rainfall with geosynchronous satellite images
A method of estimating GATE rainfall from either visible or infrared images of geosynchronous satellites is described. Rain is estimated from cumulonimbus cloud area by the equation R = a sub 0 A + a sub 1 dA/dt, where R is volumetric rainfall, A cloud area, t time, and a sub 0 and a sub 1 are const...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19790053995 2023-05-15T17:32:49+02:00 Estimating GATE rainfall with geosynchronous satellite images Stout, J. E. Martin, D. W. Sikdar, D. N. Unclassified, Unlimited, Publicly available May 1, 1979 http://ntrs.nasa.gov/search.jsp?R=19790053995 unknown http://ntrs.nasa.gov/search.jsp?R=19790053995 Accession ID: 79A38008 Copyright Other Sources 47 Monthly Weather Review; 107; May 1979 1979 ftnasantrs 2012-02-15T13:53:52Z A method of estimating GATE rainfall from either visible or infrared images of geosynchronous satellites is described. Rain is estimated from cumulonimbus cloud area by the equation R = a sub 0 A + a sub 1 dA/dt, where R is volumetric rainfall, A cloud area, t time, and a sub 0 and a sub 1 are constants. Rainfall, calculated from 5.3 cm ship radar, and cloud area are measured from clouds in the tropical North Atlantic. The constants a sub 0 and a sub 1 are fit to these measurements by the least-squares method. Hourly estimates by the infrared version of this technique correlate well (correlation coefficient of 0.84) with rain totals derived from composited radar for an area of 100,000 sq km. The accuracy of this method is described and compared to that of another technique using geosynchronous satellite images. It is concluded that this technique provides useful estimates of tropical oceanic rainfall on a convective scale. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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47 |
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47 Stout, J. E. Martin, D. W. Sikdar, D. N. Estimating GATE rainfall with geosynchronous satellite images |
topic_facet |
47 |
description |
A method of estimating GATE rainfall from either visible or infrared images of geosynchronous satellites is described. Rain is estimated from cumulonimbus cloud area by the equation R = a sub 0 A + a sub 1 dA/dt, where R is volumetric rainfall, A cloud area, t time, and a sub 0 and a sub 1 are constants. Rainfall, calculated from 5.3 cm ship radar, and cloud area are measured from clouds in the tropical North Atlantic. The constants a sub 0 and a sub 1 are fit to these measurements by the least-squares method. Hourly estimates by the infrared version of this technique correlate well (correlation coefficient of 0.84) with rain totals derived from composited radar for an area of 100,000 sq km. The accuracy of this method is described and compared to that of another technique using geosynchronous satellite images. It is concluded that this technique provides useful estimates of tropical oceanic rainfall on a convective scale. |
format |
Other/Unknown Material |
author |
Stout, J. E. Martin, D. W. Sikdar, D. N. |
author_facet |
Stout, J. E. Martin, D. W. Sikdar, D. N. |
author_sort |
Stout, J. E. |
title |
Estimating GATE rainfall with geosynchronous satellite images |
title_short |
Estimating GATE rainfall with geosynchronous satellite images |
title_full |
Estimating GATE rainfall with geosynchronous satellite images |
title_fullStr |
Estimating GATE rainfall with geosynchronous satellite images |
title_full_unstemmed |
Estimating GATE rainfall with geosynchronous satellite images |
title_sort |
estimating gate rainfall with geosynchronous satellite images |
publishDate |
1979 |
url |
http://ntrs.nasa.gov/search.jsp?R=19790053995 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19790053995 Accession ID: 79A38008 |
op_rights |
Copyright |
_version_ |
1766131105940897792 |