Analysis Of Spatially And Temporally Disjoint Precipitation Datasets To Estimate The 3D Distribution Of Rain

Keywords

Drop size distribution; NEXRAD; Precipitation; Rain extinction coefficients; Rain Rate

Abstract

This paper deals with the analysis of remote sensing experiments conducted for the purpose of estimating microwave rain extinction coefficients in intense convective rain events. Because the sensors (NEXRAD, zenith looking radiometer and in-situ rain gauge/disdrometer) sample different portions of the rain column they cannot be compared directly in the time domain. To account for these differences, we use the radar and in-situ sensors to construct the instantaneous 3-D rain volume that fills the upward viewing microwave radiometer antenna field of view. After providing a time series 3-D rain volumes, it will be possible to run a radiative transfer model (RTM) to calculate the theoretical downwelling radiance (bright temperature, Tb), which will be correlated with the radiometer observations. Because the Tb is directly proportional to the rain absorption, it will be possible to iteratively solve for the extinction coefficients using a maximum likelihood estimation approach.

Publication Date

12-1-2017

Publication Title

International Geoscience and Remote Sensing Symposium (IGARSS)

Volume

2017-July

Number of Pages

5256-5259

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/IGARSS.2017.8128187

Socpus ID

85041824164 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85041824164

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