The Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Suite (VIIRS) NASA Level-2 (L2) Cloud Mask is one of two continuity products designed to sustain the long-term records of both Moderate Resolution Imaging Spectroradiometer (MODIS) and VIIRS heritages. CLDMSK_L2_VIIRS_SNPP is the shortname for the SNPP VIIRS incarnation of the Cloud Mask continuity product derived from the MODIS-VIIRS cloud mask (MVCM) algorithm, which itself is based on the MODIS (MOD35) algorithm. MVCM describes a continuity algorithm that is central to both MODIS data (from Terra and Aqua missions) and VIIRS data (from SNPP and Joint Polar Satellite System missions). Please bear in mind that the term MVCM does not appear as an attribute within the product’s metadata. Implemented to consistently handle MODIS and VIIRS inputs, the SNPP VIIRS collection-1 products use calibration-adjusted NASA VIIRS L1B as inputs. The nominal spatial resolution of the SNPP VIIRS L2 Cloud mask is 750 meters.

This High-Resolution (0.1 x 0.1 degree) Level 3 monthly Aerosol Optical Depth (AOD) product is generated by combining two Visible Infrared Imaging Radiometer Suite (VIIRS) operational algorithms, namely Deep Blue (DB) and Dark Target (DT), on board the Suomi National Polar-Orbiting Partnership (SNPP) satellite. This dataset is provided in monthly files ranging from March 2012 to the present. The spatial coverage is global and the dataset is gridded at 0.1 x 0.1 degree spatial resolution. The data are generated using Level 2 AOD retrieved using DT and DB algorithms. The product provides multiple options for using data either from DT or DB or combined. Depending on user need and application, they can choose one or more relevant parameter. The pixels with highest quality as recommended by science teams are only considered in these averaging. In addition to averaged AOD at 0.1 x 0.1 degree resolution, standard deviation and number of pixels averaged from each algorithm are also provided. Average sensor zenith angle is also provided for additional filtering of the data. If you have any questions, please read the README document first and post your question to the NASA Earthdata Forum (forum.earthdata.nasa.gov) or email the GES DISC Help Desk (gsfc-dl-help-disc@mail.nasa.gov).

This dataset contains Ocean Color (OC) Environmental Data Records (EDR) Level-2 products from the Visible Infrared Imaging Radiometer Suite (VIIRS) on board the Suomi-National Polar-orbiting Partnership (SNPP) and Joint Polar Satellite System-1 (JPSS1) satellites. The Level-2 OC EDR are produced by NESDIS Office of Satellite and Product Operations (OSPO) and Center for Satellite Applications and Research (STAR) OC team. The operational products from SNPP-VIIRS include Chl-a, Rrs, Kd, Chl-a fronts, the diffuse attenuation coefficient for photosynthetically active radiation (KdPAR), and true color.

The VIIRS/SNPP Water Vapor Level-3 daily 0.5 x 0.5 degree grid Product provide total column water vapor (TPW) properties from merged VIIRS infrared measurements and Cross-track Infrared Sounder (CrIS) plus Advanced Technology Microwave Sounder (ATMS) water vapor soundings to continue the depiction of global moisture at a higher spatial resolution started with MODIS on the Terra and Aqua platforms. Level-3 global 0.5 degree by 0.5 degree spatial resolution daily mean data products (called WATVP_D3_VIIRS_SNPP) is derived by using a gridding software (called Yori) developed at the University of Wisconsin, Madison, Space Science and Engineering Center (Veglio et al., 2018), and implemented by the NASA VIIRS Atmosphere Science Investigator-led Processing System (SIPS). The Yori has been adapted for the VIIRS TPW products and is processed using the VIIRS Level-2 Water Vapor products (WATVP_L2_VIIRS_SNPP) separated by day and night. The mean and the standard deviation of each Level-2 water vapor product are calculated for each grid cell. The sum, the square of the sum of each product, and the number of pixels in the cells are also stored in the Level-3 (daily) output files for further aggregation purposes.

The VIIRS/SNPP Cloud Properties COSP Level 3 monthly, 1x1 degree grid product is a new L3 CLDPROP COSP Cloud product with short-name CLDPROPCOSP_M3_VIIRS_SNPP. It contains VIIRS SNPP cloud mask, cloud top, and cloud optical retrieval data over monthly timeframe. It provides a set of custom cloud-related parameters for better comparison with climate model output. The “COSP” acronym in the short-name stands for Cloud Feedback Model Intercomparison Project (CFMIP) Observation Simulator Package. Provided in netCDF4 format, it contains 32 aggregated science data sets (SDS/parameters).Consult the CLDPROPCOSP User Guide for details regarding how the L3 monthly statistics are computed, and to learn more about the gridding and sampling protocols specific to this product and a number of other topics germane to the user community. The collection of this product starts from March 1, 2012 and includes 12 granules each calendar year.

The VIIRS/SNPP Deep Blue Aerosol L2 6-Min Swath 6 km product from the Visible Infrared Imaging Radiometer Suite (VIIRS) determines atmospheric aerosol loading for daytime cloud-free snow-free scenes. This orbit-level product (Short-name: AERDB_L2_VIIRS_SNPP) has an at-nadir resolution of 6 km x 6 km, and progressively increases away from nadir given the sensor’s scanning geometry and Earth’s curvature. Viewed differently, this product’s resolution accommodates 8 x 8 native VIIRS moderate-resolution (M-band) pixels that nominally have ~750 m horizontal pixel size. The L2 Deep Blue AOT data products, at 550 nanometers reference wavelengths, are derived from particular VIIRS bands using two primary AOT retrieval algorithms: Deep Blue algorithm over land, and the Satellite Ocean Aerosol Retrieval (SOAR) algorithm over ocean. Although this product is called Deep Blue based on retrievals for the land algorithm, the data includes over-water retrievals as well.This L2 description pertains to the VIIRS Deep Blue Aerosol collection version 2.0 (C2) product. Significant changes have been made to the V2.0 Deep Blue/SOAR algorithms to further improve the data quality. For C2.0, the aerosol products are available for NOAA20 VIIRS in addition to SNPP. Some of changes in the retrieval algorithms and data products include, new SDS suite for prognostic uncertainties of 550 nm AOT over both land and ocean is added, surface pressure is better accounted for for both over-land and over-ocean retrievals by adding surface pressure nodes in the aerosol lookup table, and a number of other improvements which can be found from Product page at:https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/AERDB_L2_VIIRS_SNPPFor more information consult Deep Blue aerosol team Page at: https://deepblue.gsfc.nasa.gov

The VIIRS/SNPP Cloud Properties 6-min L2 Swath 750m product is designed to facilitate continuity in cloud properties between the MODIS (Moderate Resolution Imaging Spectroradiometer) on the Aqua and Terra platforms and the series of VIIRS (Visible Infrared Imaging Radiometer Suite) instruments, beginning with the Suomi NPP spacecraft. The VIIRS Cloud Properties product consists of cloud optical and physical parameters. These parameters are derived using observations in visible through infrared spectral channels. VIIRS infrared channel radiances are primarily used to derive cloud top temperature, cloud top height, effective emissivity, an infrared cloud phase product (ice vs. water, opaque vs. non-opaque) and cloud fraction under both daytime and nighttime conditions. The VIIRS solar reflectance channels are primarily used to derive cloud optical thickness, particle effective radius, water path, and to inform the phase used in the optical retrievals. The VIIRS Cloud Properties product is a Level-2 product generated at 750 m (at nadir) spatial resolution.

The current version-1.1 of the Level-2 CLDPROP product collection is corrected to address an issue with the cloud optical properties’ thermodynamic phase that caused erroneous liquid water cloud phase results.

The VIIRS/SNPP Cloud Properties Level 3 monthly, 1x1 degree grid product is designed to facilitate continuity in cloud property statistics between the MODIS on the Aqua and Terra platforms and the common continuity products generated for the VIIRS (Visible Infrared Imaging Radiometer Suite) and the MODIS Aqua instruments. CLDPROP Level-3 statistical routines include scalar and histograms (1-D and 2-D) that are calculated identically to statistical datasets in the MODIS standard Level-3 product (MOD08 and MYD08 for MODIS Terra and Aqua, respectively). In addition, the same dataset names are used for all common datasets provided in both the continuity and standard Level-3 files.

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-11-14T03:55:20Z to 2025-11-14T04:08:07Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.

The VIIRS/SNPP Cloud Properties Level 3 monthly, 1x1 degree grid product is designed to facilitate continuity in cloud property statistics between the MODIS on the Aqua and Terra platforms and the common continuity products generated for the VIIRS (Visible Infrared Imaging Radiometer Suite) and the MODIS Aqua instruments. CLDPROP Level-3 statistical routines include scalar and histograms (1-D and 2-D) that are calculated identically to statistical datasets in the MODIS standard Level-3 product (MOD08 and MYD08 for MODIS Terra and Aqua, respectively). In addition, the same dataset names are used for all common datasets provided in both the continuity and standard Level-3 files.

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-11-14T08:51:13Z to 2025-11-14T09:02:34Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-01-29T10:44:06Z to 2025-01-29T10:58:17Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-06-01T14:01:34Z to 2025-06-01T14:12:56Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.

The Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Suite (VIIRS) NASA standard Level-2 (L2) dark target (DT) aerosol product provides satellite-derived measurements of Aerosol Optical Thickness (AOT) and their properties over land and ocean, and spectral AOT and their size parameters over oceans every 6 minutes, globally. The VIIRS incarnation of the DT aerosol product is based on the same DT algorithm that was developed and used to derive products from the Terra and Aqua mission’s MODIS instruments. Two separate and distinct DT algorithms exist. One helps retrieve aerosol information over ocean (dark in visible and longer wavelengths), while the second aids retrievals over vegetated/dark-soiled land (dark in the visible).This orbit-level product (Short-name: AERDT_L2_VIIRS_SNPP_NRT) has an at-nadir resolution of 6 km x 6 km, and progressively increases away from nadir given the sensor's scanning geometry and Earth's curvature. Viewed differently, this product's resolution accommodates 8 x 8 native VIIRS moderate-resolution (M-band) pixels that nominally have ~750 m horizontal pixel size. Hence, the Level-2 Dark Target Aerosol Optical Thickness data product incorporates 64 (750 m) pixels over a 6-minute acquisition. Version 2.0 constitutes the latest collection of the L2 Dark Target Aerosol product and contains improvements over its previous collection (v1.1).

The Suomi National Polar-orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Suite (VIIRS) NASA standard Level-2 (L2) deep blue aerosol product provides satellite-derived measurements of Aerosol Optical Thickness (AOT) and their properties over land and ocean, every 6 minutes, globally. The Deep Blue algorithm draws its heritage from previous applications to retrieve AOT from Sea‐viewing Wide Field‐of‐view Sensor (SeaWiFS) and Moderate Resolution Imaging Spectroradiometer (MODIS) measurements over land.This orbit-level product (Short-name: AERDB_L2_VIIRS_SNPP) has an at-nadir resolution of 6 km x 6 km, and progressively increases away from nadir given the sensor’s scanning geometry and Earth’s curvature. Viewed differently, this product’s resolution accommodates 8 x 8 native VIIRS moderate-resolution (M-band) pixels that nominally have ~750 m horizontal pixel size. The L2 Deep Blue AOT data products, at 550 nanometers reference wavelengths, are derived from particular VIIRS bands using two primary AOT retrieval algorithms: Deep Blue algorithm over land, and the Satellite Ocean Aerosol Retrieval (SOAR) algorithm over ocean. Although this product is called Deep Blue based on retrievals for the land algorithm, the data includes over-water retrievals as well.

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-11-14T05:36:20Z to 2025-11-14T05:44:51Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-03-07T12:30:32Z to 2025-03-07T12:44:44Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-01-15T11:45:36Z to 2025-01-15T12:01:14Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.

The VIIRS/NOAA20 Cloud Properties Level 3 daily, 1x1 degree grid product, shortname CLDPROP_D3_VIIRS_NOAA20, is a continuity product designed to sustain the long-term records of both Moderate Resolution Imaging Spectroradiometer (MODIS) and VIIRS heritages. The Cloud Properties in this product includes both Cloud-Optical Property (COP) and Cloud-Top Property parameters. This product ensures continuity of approach through a common algorithm that is applicable to both MODIS and VIIRS data by leveraging only those spectral channels that are common to both instruments. For more information, visit product page at: https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/CLDPROP_D3_VIIRS_NOAA20

Direct Broadcast satellite data received at MET NORWAY Oslo from the satellite SNPP instrument VIIRS. Data is from 2025-06-12T22:41:45Z to 2025-06-12T22:48:50Z. This contains the I-Bands i.e. bands at 375m spatial resolution. The data is processed by standard processing software to geolocated and calibrated values in satellite swath in received instrument resolution. The VIIRS instrument consist of the parts: M, I and DNB. The (M)edium resolution bands are 16 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 750m. The h(I)igh resolution bands are 5 channels ranging from the visible parts of the spectrum through the near infrared to the infrared each with a spatial resolution of 375m. The (D)ay (N)ight (B)and is a broadspectrum visible channel sensitive to both refelected sun light at day and all visible lights at night.