The climate hazards infrared precipitation with stations—a new environmental record for monitoring extremes

Scientific Data
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Abstract

The Climate Hazards group Infrared Precipitation with Stations (CHIRPS) dataset builds on previous approaches to ‘smart’ interpolation techniques and high resolution, long period of record precipitation estimates based on infrared Cold Cloud Duration (CCD) observations. The algorithm i) is built around a 0.05° climatology that incorporates satellite information to represent sparsely gauged locations, ii) incorporates daily, pentadal, and monthly 1981-present 0.05° CCD-based precipitation estimates, iii) blends station data to produce a preliminary information product with a latency of about 2 days and a final product with an average latency of about 3 weeks, and iv) uses a novel blending procedure incorporating the spatial correlation structure of CCD-estimates to assign interpolation weights. We present the CHIRPS algorithm, global and regional validation results, and show how CHIRPS can be used to quantify the hydrologic impacts of decreasing precipitation and rising air temperatures in the Greater Horn of Africa. Using the Variable Infiltration Capacity model, we show that CHIRPS can support effective hydrologic forecasts and trend analyses in southeastern Ethiopia.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title The climate hazards infrared precipitation with stations—a new environmental record for monitoring extremes
Series title Scientific Data
DOI 10.1038/sdata.2015.66
Volume 2
Year Published 2015
Language English
Publisher Nature Publishing Group
Contributing office(s) Earth Resources Observation and Science (EROS) Center
Description Article 150066: 21 p.
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