ABoVE: Bias-Corrected IMERG Monthly Precipitation for Alaska and Canada, 2000-2020

Published by ORNL_DAAC | National Aeronautics and Space Administration | Metadata Last Checked: October 20, 2025 | Last Modified: 2025-09-10

This dataset is a modification to the Integrated Multi-satellitE Retrievals for GPM (IMERG) Final Run microwave-only, daily precipitation Version 06 data. It provides bias-corrected IMERG monthly precipitation data for Alaska and Canada from June 2000 through December 2020 in Cloud-Optimized GeoTIFF (*.tif) format. Data are provided in the units of mm/day. NASA's IMERG data product is one of the most advanced satellite precipitation products with a 0.1-degree spatial resolution and near global coverage. This dataset bias-corrected IMERG's HQprecipitation precipitation estimates, which are based on passive microwave (PMW)-only retrievals, using a linear regression method. This method utilizes empirical measurements from rain gauge stations from the Global Historical Climatology Network (GHCN) and a digital elevation model. This bias correction approach improves estimates at elevations above 500 m a.s.l., which are typically underestimated.

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	10.3334/ORNLDAAC/2097
landingPage	https://search.earthdata.nasa.gov/search?q=IMERG_Precip_Canada_Alaska_2097&ac=true
programCode	[ "026:000" ]
spatial	[[{"WestBoundingCoordinate":-179.3,"NorthBoundingCoordinate":72.0,"EastBoundingCoordinate":-48.5,"SouthBoundingCoordinate":40.8}],"CARTESIAN"]
temporal	2000-06-01/2000-06-01
theme	[ "Earth Science" ]