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SAFARI 2000 Daily Rainfall Estimates, 0.1-Deg, Southern Africa, 1993-2001

Data Set Overview

Data setSAFARI 2000 Daily Rainfall Estimates, 0.1-Deg, Southern Africa, 1993-2001
DOI10.3334/ORNLDAAC/793
Release date2005-06-01
ProjectSAFARI 2000 (S2K)
Time Period1993-01-01 to 2001-12-31

Description

The Microwave InfraRed Algorithm (MIRA) is used to produce an imagery data set of daily mean rain rates at 0.1 degree spatial resolution over southern Africa for the period 1993-2001. MIRA combines passive microwave (PMW) from the Special Sensor Microwave/Imager (SSM/I) on board the DMSP F10 and F14 satellites at a resolution of 0.5 degrees and infrared (IR) data from the Meteosat 4, 5, 6, and 7 satellites in 2-hour slots at a resolution of 5 km. This approach accounts for the limitations of both data types in estimating precipitation. Rainfall estimates are produced at the high spatial and temporal frequency of the IR data using rainfall information from the PMW data. An IR/rain rate relationship, variable in space and time, is derived from coincident observations of IR and PMW rain rate (accumulated over a calibration domain) using the probability matching method. The IR/rain rate relationship is then applied to IR imagery at full temporal resolution. The results presented here are the daily means of those derived rain rates at 0.1 degree spatial resolution.The rainfall data sets are flat binary images with no headers. They are compressed band sequential (bsq) files that contain all of the daily images for the given year. Each image is an array of 401 lines, each with 341 binary floating-point numbers, containing rainfall at 0.1 degree resolution for the area 10 to 50 degrees longitude and 0 to -34 degrees latitude. The number of band sequential images in each annual file and the associated dates can be found in the file MIRA_data_dates.csv.

Documentation

Data set reference document

Citation

Layberry, R., D.R. Kniveton, and M.C. Todd. 2005. SAFARI 2000 Daily Rainfall Estimates, 0.1-Deg, Southern Africa, 1993-2001. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/793
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Project

SAFARI 2000 (S2K): The SAFARI 2000 project was an international science initiative to study the linkages between land and atmosphere processes in the southern African region. In addition, SAFARI 2000 examined the relationship of biogenic, pyrogenic, and anthropogenic emissions and the consequences of their deposition to the functioning of the biogeophysical and biogeochemical systems of southern Africa. This initiative, which was conducted in 1999-2001, was built around a number of ongoing, already-funded activities by NASA, the international community, and African nations in the southern African region.

Project data set list for SAFARI 2000 (S2K).

Companion Files

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  • mira_data_dates.csv

Data Files

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Data File (Granule)File SizeDates
mira_rainfall_1993.zip 28.6 MB 1993-01-01 - 2001-12-31
mira_rainfall_1994.zip 24.3 MB 1993-01-01 - 2001-12-31
mira_rainfall_1995.zip 25.5 MB 1993-01-01 - 2001-12-31
mira_rainfall_1996.zip 22.0 MB 1993-01-01 - 2001-12-31
mira_rainfall_1997.zip 28.6 MB 1993-01-01 - 2001-12-31
mira_rainfall_1998.zip 28.5 MB 1993-01-01 - 2001-12-31
mira_rainfall_1999.zip 26.6 MB 1993-01-01 - 2001-12-31
mira_rainfall_2000.zip 30.1 MB 1993-01-01 - 2001-12-31
mira_rainfall_2001.zip 38.2 MB 1993-01-01 - 2001-12-31

Publications

Publications using this data set

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Files related to this data set have been downloaded on 165 occasions since 2007-12-21, totaling 850 files.