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Full catalog/clms_swe_northernhemisphere_5km_daily_v1
clms_swe_northernhemisphere_5km_daily_v1·dataset

Daily snowpack water content, Northern Hemisphere (Copernicus)

CLMS SWE Northern Hemisphere 5km daily V1
cryosphere ESA ESA Copernicus COGNetCDF
In plain English

What it measures. Estimates the snow water equivalent, meaning how much actual water is locked up in the snow on the ground if it all melted, across the Northern Hemisphere.

How it's made. ESA Copernicus produces this daily product at about 5-kilometre resolution, combining the SSMIS microwave sensor with VIIRS optical data.

How & where you'd use it. Helps water authorities and hydropower operators anticipate spring snowmelt and the water it will release into rivers and reservoirs.

What's measured

CopernicusCLMSSWESnow Water EquivalentcryosphereNorthern Hemispheredaily5kmSSMISVIIRS

Coverage & cadence

  • Time span2006-01-01 → 2024-06-30
  • 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_v1"],   # 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.