Array · collection · 2025
VIIRS/SNPP Cloud Mask 6-Min Swath 750 m V2
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/viirs/cldmsk_l2_viirs_snpp.002
The Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Suite (VIIRS) NASA Level-2 (L2) Cloud Mask is one of four continuity products designed to sustain the long-term records of both Moderate Resolution Imaging Spectroradiometer (MODIS) and VIIRS heritages.
Description
CLDMSK_L2_VIIRS_SNPP is the shortname for the SNPP VIIRS incarnation of the Cloud Mask continuity product that is derived from the MODIS-VIIRS cloud mask (MVCM) continuity algorithm, which itself is based on the MODIS (MOD35) algorithm.
The MODIS (from Terra and Aqua missions) and VIIRS (from SNPP and Joint Polar Satellite System (JPSS) missions) data-derived cloud mask products use the MVCM algorithm. Implemented to consistently handle MODIS and VIIRS inputs, the SNPP VIIRS v2.0 collection products use calibration-adjusted NASA VIIRS L1B as inputs. The nominal spatial resolution of the SNPP VIIRS L2 Cloud mask is 750 meters at nadir.
Read the rest (2 more)
The v2.0 collection, which starts from March 1, 2012 (2012-061), also contains a high-resolution I-band (375 m) daytime cloud mask. The L2 netCDF product, acquired and processed every 6 minutes, contains two sets of the following three data groups and Science Data Set (SDS) layers in each group: | Geophysical data | Geophysical data (I-band Hi-res) | | :--- | :--- | | VIIRS Clear-Sky Confidence | VIIRS Clear-Sky Confidence | | VIIRS Cloud Mask and Spectral Results | VIIRS Cloud Mask and Spectral Results | | Cloud Mask SPI | | | VIIRS Integer Cloud Mask | VIIRS Integer Cloud Mask | | Quality Assurance for VIIRS Cloud Mask | Quality Assurance for VIIRS Cloud Mask | | Geolocation data | Geolocation data (I-band Hi-res) | | Latitudes of pixel locations | Latitudes of pixel locations | | Longitudes of pixel locations | Longitudes of pixel locations | | Sensor azimuth at pixel locations | Sensor azimuth at pixel locations | | Sensor zenith at pixel locations | Sensor zenith at pixel locations | | Solar azimuth at pixel locations | Solar azimuth at pixel locations | | Solar zenith at pixel locations | Solar zenith at pixel locations | | Scanline attributes | Scanline attributes (I-band Hi-res) | | Scan start-time (TAI93) | Scan start-time | | | | Consult the MODIS-VIIRS Cloud Mask Product User Guide for additional information regarding the transition from the MODIS-MOD35 to the MVCM algorithm, inputs to MVCM, output files, file naming conventions, quality flags, and validation.
Users are also encouraged to consult the MOD35 Algorithm Theoretical Basis Document (ATBD) and the MODIS Atmosphere QA Plan for relevant information that are applicable to the NOAA-20 VIIRS Cloud Mask product.
Links
Get the data
- Product User's Guide ladsweb.modaps.eosdis.nasa.gov/api/v2/content/archives/Document%20Archive/Science%20Data%20Pr… ↗
documentation · download · from NASA CMR, data nasa gov
- Product ATBD modis-atmosphere.gsfc.nasa.gov/sites/default/files/ModAtmo/MOD35_ATBD_Collection6_0.pdf ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C3860045339-LAADS.iso19115 ↗
download · from data nasa gov
- ladsweb.modaps.eosdis.nasa.gov /archive/allData/5200/CLDMSK_L2_VIIRS_SNPP ↗
Direct access to product files from LAADS archive.
download · from NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/viirs-snpp-cloud-mask-and-spectral-test-results-6-min-… ↗
landing page · from data nasa gov
- DOI doi.org/10.5067/viirs/cldmsk_l2_viirs_snpp.002 ↗
DOI / persistent id · from NASA CMR
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3860045339-LAADS.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=a455334c-1411-4fa8-a1fe-41f1a7df7… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3860045339-LAADS.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Cloud Frequency · Cloud Height · Clouds · Infrared Radiance · Reflected Infrared · Suomi-NPP · Visible-Infrared Imager-Radiometer Suite · Visible Radiance
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Engineering · Ocean & Atmospheric Science · Physics
- Inferred from text
- Imaging 75%
Related
- Newer version ofVIIRS/Suomi-NPP Cloud Mask 6-Min Swath 750 m
Provenance · 2 source records, 24 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3860045339-LAADS | 14 d ago | JSON v1 |
| NASA Data Portal | a455334c-1411-4fa8-a1fe-41f1a7df7f8e | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:engineering | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:viirs | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds/cloud-properties/cloud-frequency | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/clouds/cloud-properties/cloud-height | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/infrared-wavelengths/infrared-radiance | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/infrared-wavelengths/reflected-infrared | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/spectral-engineering/visible-wavelengths/visible-radiance | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:imaging | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:suomi-npp | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |