Where there's snow, gap-filled (VIIRS, Suomi-NPP, 375 m, daily)
What it measures. A daily global map of where there is snow on the ground at 375 m resolution, with cloudy gaps filled in so the picture is continuous; it includes a snow index and a layer noting how long clouds have lingered.
How it's made. Made by taking the VIIRS snow-cover tiles from the Suomi-NPP satellite, filling cloud-obscured spots using recent clear views, and reprojecting them into a single global map each day.
How & where you'd use it. Useful for tracking snow extent for water-supply, hydrology and climate studies, with the gap-filling making day-to-day maps more usable despite clouds.
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
- Measure sea ice, snow cover and glaciers
- Watch ice-sheet elevation change
- Track freeze/thaw and permafrost
Official description
VNP10D1F is a daily global view of cloud-gap-filled (CGF) snow cover at 375 m resolution. This daily global product is produced by reprojecting all of the <a href="https://nsidc.org/data/vnp10a1f/versions/2">VNP10A1F</a> product tiles from each day to a global geographic projection. The data files include the NDSI_Snow_Cover and Cloud_Persistence data layers from <a href="https://nsidc.org/data/vnp10a1f/versions/2">VNP10A1F</a>.
Get the data
import earthaccess
earthaccess.login(strategy="netrc") # free Earthdata Login
results = earthaccess.search_data(
short_name="VNP10D1F",
version="2",
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 NSIDC_CPRDBrowsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package. Official links
- Quickly download a few files using a web browser, or access data through a command-line utility such as WGET. GET DATA
- Search and order NASA Earth Science data using spatial and temporal filters. Reformatting, reprojecting, and subsetting options are available for some data sets. GET DATA
- Search data by spatial and/or temporal ranges or file name. Choose from various download options, including a Python script. GET DATA
- A Python library to search and access NASA Earth science data with just a few lines of code GET DATA
- Find more data access options and help resources. VIEW RELATED INFORMATION
- VIIRS/NPP Snow Cover Daily L3 Global 375m CMG, Version 2 User Guide VIEW RELATED INFORMATION
- VIIRS C2 Snow Products User Guide Version 3.0 VIEW RELATED INFORMATION