VIIRS/SNPP Level-2 Water Vapor Products 6-min Swath 750m

The Suomi NPP VIIRS Water Vapor Products provide total column water vapor (TPW) properties from merged VIIRS infrared measurements and CrIS plus ATMS water vapor soundings to continue the depiction of global moisture at high spatial resolution started with MODIS on the Terra and Aqua platforms. While MODIS has two water vapor channels within the 6.5 μm H2O absorption band and four channels within the 15 micrometer CO2 absorption band, VIIRS has no channels in either IR absorption band. The VNPWATVP algorithm is similar to the MODIS MOD07 synthetic regression algorithm. It uses the three VIIRS longwave IR window bands in a regression relation and adds the NUCAPS (CrIS+ATMS) water vapor product to compensate for the absence of VIIRS water vapor channels. The Level-2 6-minute granule and 750 m spatial resolution VIIRS TPW product file includes the collocated NUCAPS background TPW, the VIIRS-only TPW, and VIIRS+NUCAPS TPW retrievals with quality flags.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 8, 2026, 22:16 (UTC)
Created April 1, 2025, 20:01 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 9eb9fb4d-1d73-4251-9a93-535ad46a7cbc
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/VIIRS/WATVP_L2_VIIRS_SNPP.001
license https://www.usa.gov/government-works
modified 2026-06-03T16:52:50Z
programCode {026:000}
publisher NASA/GSFC/SED/ESD/HBSL/BISB/LAADS;NASA/GSFC/SED/ESD/HBSL/BISB/MODAPS;UWI-MAD/SSEC
resource-type Dataset
source_datajson_identifier true
source_hash 376af1d85a43e1c1a241e57f5f4c4066d4daef004cbb2267dbd9022a50c4f999
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -180.0, "NorthBoundingCoordinate": 90.0, "EastBoundingCoordinate": 180.0, "SouthBoundingCoordinate": -90.0}]]
temporal 2012-05-01/2026-06-03
theme {"Earth Science"}