Daily Snow Depth and SWE from GPS Signal-to-Noise Ratios, Version 1

This data set consists of daily snow depths and snow-water equivalents (SWEs) estimated from GPS signal-to-noise ratios (SNRs). Snow depth is determined by calculating the relative change of the effective multipath reflector height (i.e. the snow surface) with respect to the snow free surface. SWEs are determined using GPS snow depths and, when available, density observations from nearby SNOpack TELemetry (SNOTEL) stations. When a nearby SNOTEL station is not available, density is estimated using GPS snow depth and climate classes, which account for variables such as location and time of the year.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated November 2, 2026, 16:57 (UTC)
Created April 1, 2025, 15:20 (UTC)
Identifier 10.5067/Z02Y1HGNFXCH
Modified 2026-10-26T22:16:08Z
Theme {"Earth Science"}
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 1700c2a5-0ba7-4a0f-b7a2-80acd991e379
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
license https://www.usa.gov/government-works
programCode {026:000}
publisher NASA NSIDC DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 158bebc24a1d34cff4f315b72f580fb6d2dc1d23aa19cf33825cc5f3b945966f
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -180.0, "NorthBoundingCoordinate": 83.0, "EastBoundingCoordinate": -60.0, "SouthBoundingCoordinate": 32.0}, {"WestBoundingCoordinate": 18.36, "NorthBoundingCoordinate": 57.67, "EastBoundingCoordinate": 18.37, "SouthBoundingCoordinate": 57.66}]]
temporal 2002-09-01/2017-06-30