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Daily Precipitation over Southern Africa: A New Resource for Climate Studies

journal contribution
posted on 2023-06-07, 14:34 authored by R. Layberry, Dominic KnivetonDominic Kniveton, Martin ToddMartin Todd, C. Kidd, T. J. Bellerby
This paper describes a new high-resolution multiplatform multisensor satellite rainfall product for southern Africa covering the period 1993–2002. The microwave infrared rainfall algorithm (MIRA) employed to generate the rainfall estimates combines high spatial and temporal resolution Meteosat infrared data with infrequent Special Sensor Microwave Imager (SSM/I) overpasses. A transfer function relating Meteosat thermal infrared cloud brightness temperatures to SSM/I rainfall estimates is derived using collocated data from the two instruments and then applied to the full coverage of the Meteosat data. An extensive continental-scale validation against synoptic station data of both the daily MIRA precipitation product and a normalized geostationary IR-only Geostationary Operational Environmental Satellite (GOES) precipitation index (GPI) demonstrates a consistent advantage using the former over the latter for rain delineation. Potential uses for the resulting high-resolution daily rainfall dataset are discussed.

History

Publication status

  • Published

Journal

Journal of Hydrometeorology

ISSN

1525-7541

Issue

1

Volume

7

Page range

149-159

Department affiliated with

  • Geography Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2008-01-22

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