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Full catalog/clms_swe_northernhemisphere_5km_daily_v2
clms_swe_northernhemisphere_5km_daily_v2·dataset

Daily snowpack water content, Northern Hemisphere, v2 (Copernicus)

CLMS SWE Northern Hemisphere 5km daily V2
cryosphere ESA ESA Copernicus active COGNetCDF
In plain English

What it measures. An updated version that estimates snow water equivalent, the amount of water held in the snowpack, daily across the Northern Hemisphere.

How it's made. ESA Copernicus creates it at roughly 5-kilometre resolution by blending SSMIS microwave readings with VIIRS imagery.

How & where you'd use it. Lets forecasters and water managers gauge how much meltwater is coming, supporting flood preparation and water-supply planning.

What's measured

CopernicusCLMSSWESnow Water EquivalentcryosphereNorthern Hemispheredaily5kmSSMISVIIRS

Coverage & cadence

  • Time span2024-07-01 → ongoing
  • Spatial extent-179.9999999, 35, 179.9999999, 85
  • FormatsCOG, NetCDF

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

Provides daily estimates of the snow water equivalent over the Northern Hemisphere in the spatial resolution of about 5 km.

Get the data

copernicus_access.py
# ESA Copernicus Data Space — open STAC API (free account)
from pystac_client import Client

cat = Client.open("https://stac.dataspace.copernicus.eu/v1")
search = cat.search(
    collections=["clms_swe_northernhemisphere_5km_daily_v2"],   # add _cog or _nc for a format variant
    bbox=(-10, 35, 30, 60),             # your area (W,S,E,N)
    datetime="2024-01-01/2024-12-31",
)
items = list(search.items())            # then read assets with rioxarray / xarray
Browsing the Copernicus STAC is open; downloading bytes needs a free Copernicus Data Space account.