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VIIRS/NPP BRDF/Albedo Valid Observation Band M3 Daily L3 Global 30ArcSec CMG V002

Metadata Updated: September 18, 2025

The NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Valid Observation Band M3 product (VNP43D44) is produced daily using 16 days of data at 30 arc second (1,000 meter) resolution. Data are temporally weighted to the ninth day, which is reflected in the file name. The VNP43D product suite is provided in a Climate Modeling Grid (CMG), which covers the entire globe for use in climate simulation models. Due to the large file size, each VNP43D product contains just one data layer for each of the parameters included in the VNP43MA2 product. VNP43D40 through VNP43D53 are the 30 arc second BRDF/Albedo Quality values, the Local Solar Noon values, the Valid Observations of the moderate resolution bands (M1 through M5, M7, M8, M10, and M11) plus the Day/Night Band (DNB), the Snow Status, and the Uncertainty. Details regarding methodology are available on the VNP43MA2 product page and in the Algorithm Theoretical Basis Document (ATBD).VNP43D44 contains the valid observation quality layer representing each of the 16 days of the retrieval period for VIIRS band M3.Known Issues For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.Improvements/Changes from Previous Version Improved calibration algorithm and better coefficients for entire Suomi NPP mission. Improved geolocation accuracy and updates to fix outliers around maneuver periods and other events. Corrections to the aerosol quantity flag (low, average, high) mainly over brighter surfaces in the mid to high latitudes such as desert and tropical vegetation areas. This has an impact on the retrieval of other downstream data products such as VNP13 Vegetation Indices and VNP43 BRDF/Albedo. Improved cloud mask input product for corrections along coastlines and artifacts from use of coarse resolution climatology data. Replaced the land/water mask input product with MODIS heritage seven class land/water mask.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date April 11, 2025
Metadata Updated Date September 18, 2025

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date April 11, 2025
Metadata Updated Date September 18, 2025
Publisher LP DAAC;UMASS-B/SFE;NASA/GSFC/SED/ESD/TISL/LandSIPS
Maintainer
Identifier 10.5067/VIIRS/VNP43D44.002
Data Last Modified 2025-09-11
Category Earth Science
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id d4402c9e-ad3a-4bc5-aae3-3cdf2393f61c
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://landweb.modaps.eosdis.nasa.gov/
Old Spatial {"NorthBoundingCoordinate":90,"WestBoundingCoordinate":-180,"EastBoundingCoordinate":180,"SouthBoundingCoordinate":-90},"CARTESIAN"
Program Code 026:000
Source Datajson Identifier True
Source Hash d3e03484f035fe612f56c90dac174216065506342030737fe1e3eafb02f0a664
Source Schema Version 1.1
Spatial
Temporal 2012-01-19/2012-01-19

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