[ISO_Topic_Category='IMAGERY/BASE MAPS/EARTH COVER']
SAFARI 2000 DAILY RAINFALL ESTIMATES, 0.1-DEG, SOUTHERN AFRICA, 1993-2001Entry ID: s2k_daily_prec
Abstract: 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 341 lines, each with 401 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.
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Data Set Citation
Dataset Originator/Creator: KNIVETON, D.R.LAYBERRY, R.TODD, M.C.
Dataset Title: SAFARI 2000 DAILY RAINFALL ESTIMATES, 0.1-DEG, SOUTHERN AFRICA, 1993-2001
Dataset Release Date: 2005
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/793Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=793&term2attribut...
Start Date: 1993-01-01Stop Date: 2001-12-31
Data Set Progress
Role: TECHNICAL CONTACT
Email: D.R.Kniveton at susx.ac.uk
School of Chemistry Physics and Environmental Science University of Sussex
Province or State: Brighton
Role: DIF AUTHOR
Phone: (865) 574-7447
Email: uso at daac.ornl.gov
ORNL DAAC User Services Office Oak Ridge National Laboratory
City: Oak Ridge
Province or State: TN
Postal Code: 37831-6407
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-06-01
Last DIF Revision Date: 2012-05-17