Where there's snow (VIIRS NOAA-20, daily, 375 m) — VJ110D1F

In plain English

What it measures. A daily global picture of where snow is on the ground, at about 375 m detail, with gaps left by clouds filled in so the map is complete.

How it's made. Produced from the VIIRS instrument on the NOAA-20 satellite by reprojecting daily snow-cover tiles onto a single global grid, carrying snow and cloud-persistence information.

How & where you'd use it. Useful for monitoring snow cover for water resources, weather, and climate applications.

What's measured

CRYOSPHERE › SNOW/ICE › SNOW COVER

Coverage & cadence

Time span2018-01-05 → ongoing
Measured byJPSS-1 (VIIRS) · NOAA-20 (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

VJ110D1F 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/vj110a1f/versions/2">VJ110A1F</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/vJ110a1f/versions/2">VJ110A1F</a>.

Get the data

vj110d1f_access.py

import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="VJ110D1F",
    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_CPRD

Browsing 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/JPSS1 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