Skip to main content

On rainfall retrieval using polarization-corrected temperatures

Buy Article:

$59.35 plus tax (Refund Policy)

Abstract:

This paper describes a technique for the delineation and retrieval of rainfall from passive microwave data using the polarization-corrected temperature (PCT) algorithm. The main advantage of the technique is its ability to reduce the effect of background surface emissivities making it possible to delineate areas of rainfall over varying surface types. This ability is most important when attempting to retrieve rainfall over coastal areas with emissivity signatures from sea, land and combinations of these two. This paper outlines the formulation of polarizationcorrected temperatures, and its use with data from the Special Sensor Microwave/ Imager. Central to the success of the technique is the appropriate assignment of values to two key variables: One effecting the calculation of the polarizationcorrected temperature, the other the threshold of the rain/no-rain boundary. A method is examined whereby both variables are generated from the analysis of the data. The technique is applied to one year of data over the United Kingdom to examine the dependence of these variables on the seasonal cycle. Initial results indicate that the technique is good at delineating rainfall and adjusting for seasonal fluctuations in the background surface temperature. However, retrieval of rainfall rates from the PCT using a constant relationship is less promising due to differences in cloud structure affecting the PCT to rain-rate conversion.

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/014311698215829

Publication date: March 20, 1998

More about this publication?
tandf/tres/1998/00000019/00000005/art00011
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more