Simulation of TRMM observation using Radar-AMeDAS composites

Author

Sumi, Akimasa ; Oki, Riko

Author_Institution

Center for Climate Syst. Res., Tokyo Univ., Japan

fYear

1993

fDate

18-21 Aug 1993

Firstpage

623

Abstract

Sampling errors of rainfall estimates due to TRMM (Tropical Rainfall Measuring Mission) satellite is estimated by using Radar-AMeDAS (Automatic Meteorological Data Acquisition System) rainfall data around Japan, which is a composite radar-rainfall estimate validated by dense surface rain gauge network(AMeDAS). In this study, sampling of monthly rainfall errors were estimated over 5°×5° domain by using a 43 months´s time-series of Radar-AMeDAS data, and it is concluded that the sampling error around Japan is about 16% when TRMM Microwave Imager (TMI) and TRMM Precipitation Radar(PR) can be used and about 20% when only PR can be available. Obtained results were relatively larger than the previous studies, because it is based on long term real data around Japan. There are seasonal differences of sampling errors in Japan. The errors are smaller in summer rainy season than in winter. The dependency on averaged area size is also investigated

Keywords

atmospheric techniques; geophysical techniques; rain; remote sensing; remote sensing by radar; Japan; Radar-AMeDAS; TRMM; atmosphere; measurement technique; radar remote sensing satellite; rain; rainfall; sampling error; Extraterrestrial measurements; Image sampling; Instruments; Meteorological radar; Meteorology; Rain; Sampling methods; Satellites; Spaceborne radar; Stochastic processes;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322256

Filename

322256