Half-Hourly Precipitation Data Now Available
Last week we introduced real-time observations from the NDBC network of stations and we received some great feedback on our station API. Thanks to everyone who shared their insights!
This week we’re making it rain! Many of our users involved in flood analysis and crop forecasting have expressed interest in precipitation data, so we’ve added three Integrated Multi-satelliE Retrievals for GPM (IMERG) datasets to Datahub.
NEW DATASETS
Integrated Multi-SatellitE Retrievals For GPM (IMERG) — Day 1 Half-Hourly Products
IMERG is the unified U.S. algorithm that provides the Day-1 multi-satellite precipitation product for the U.S. Global Precipitation Measurement team. Precipitation estimates from the GPM constellation are computed, gridded, intercalibrated and combined into half-hourly 0.1 x 0.1 degree fields.
The IMERG system is run twice in near-real time, producing an “Early” multi-satellite product ~4 hours after observation time and a “Late” multi-satellite product ~12 hours after observation time. A third run is performed using monthly gauge analysis, producing a “Final” satellite-gauge product ~2 months after the observation month.
Each of these half-hourly products are now available on Datahub:
IMERG — Day 1 Early Run Half-Hourly Product
IMERG — Day 1 Late Run Half-Hourly Product
Above: IMERG data showing tropical storm Darby’s cumulative precipitation over the Hawaiian Islands, July 19–26. Intro: IMERG data showing rainfall across western Europe, May 22 — June 6. Images by Hal Pierce (SSAI/NASA GSFC).
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