How much sunlight the surface reflects at noon (Suomi-NPP, daily)
What it measures. Reports daily, for each spot on Earth, how much sunlight the land surface reflects at local solar noon for one specific VIIRS color band, accounting for sun angle (black-sky albedo).
How it's made. A gridded daily product built from 16 days of VIIRS observations on Suomi-NPP, modeling how the surface reflects light from different angles, at about 1 km resolution and packaged one data layer per file.
How & where you'd use it. Reflectivity (albedo) data like this feeds climate simulation models, since how much sunlight the surface bounces back versus absorbs strongly shapes Earth's energy balance.
What's measured
Coverage & cadence
- Time span2012-01-19 → ongoing
- Measured bySuomi-NPP (VIIRS)
- Processing levelLevel 3
- Spatial extent-180, -90, 180, 90
- FormatsHDF-EOS5
- StatusACTIVE
What you can do with it
- Track deforestation, fire scars and land-cover change
- Monitor crop and vegetation health (NDVI/EVI)
- Map how built-up vs. green an area is over time
Official description
The NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo Black-Sky Albedo for Band M8 (VNP43D60) 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. VNP43D54 through VNP43D79 are the albedo products of the VNP43D BRDF/Albedo product suite. Black-sky albedo (BSA) and white-sky albedo (WSA) values are provided for the nine VIIRS moderate resolution bands (M1 through M5, M7, M8, M10, and M11) along with the visible, near-infrared (NIR), and shortwave bands included in the [VNP43MA3](https://doi.org/10.5067/VIIRS/VNP43MA3.002) product. In addition to the bands included in VNP43MA3, this product suite includes albedo values for the VIIRS Day/Night Band (DNB). The black-sky albedo (directional hemispherical reflectance) is defined as albedo in the absence of a diffuse component and is a function of solar zenith angle. White-sky albedo (bihemispherical reflectance) is defined as albedo in the absence of a direct component when the diffuse component is isotropic. Details regarding methodology are available on the [VNP43MA3](https://doi.org/10.5067/VIIRS/VNP43MA3.002) product page and in the Algorithm Theoretical Basis Document (ATBD). VNP43D60 is the BSA for VIIRS band M8 (1.240 μm). Known Issues * For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue).
Get the data
import earthaccess
earthaccess.login(strategy="netrc") # free Earthdata Login
results = earthaccess.search_data(
short_name="VNP43D60",
version="002",
bounding_box=(-122.5, 37.2, -121.8, 37.9), # your area (W,S,E,N)
temporal=("2024-01-01", "2024-12-31"), # your dates
)
files = earthaccess.open(results) # stream straight from LPCLOUD Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package. Official links
- The LDOPE Land Product Quality Assessment website provides known issues, maneuvers, and product quality of the land products. VIEW RELATED INFORMATION
- Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data. GET DATA
- The technical information in the User's Guide enables users to interpret and use the data products. VIEW RELATED INFORMATION
- The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products. VIEW RELATED INFORMATION
- The File Specification provides a description of the product file including Scientific Data Sets and their attributes. VIEW RELATED INFORMATION
- Validation at stage 3 has been achieved for the VIIRS BRDF/Albedo product suite. VIEW RELATED INFORMATION
- Further details regarding VIIRS product validation and maturity status are available from VIIRS Land Product Quality Assessment site. VIEW RELATED INFORMATION