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Full catalog/smap-L3-soil-moisture-AM-v1
smap-L3-soil-moisture-AM-v1·dataset

Daily Global Soil Moisture from SMAP Satellite

SMAP Soil Moisture L3 AM Swaths
hydrosphere NASA VEDA COG
In plain English

What it measures. Shows how much moisture is in the top layer of soil across the world's land surfaces, updated daily. It captures wet and dry conditions everywhere on land.

How it's made. Made from NASA's SMAP satellite, which uses an L-band radiometer to sense soil wetness during its morning and evening passes.

How & where you'd use it. Supports drought monitoring, flood forecasting, and crop and water management.

What's measured

smapsoilmoisture

Coverage & cadence

  • Time span2022-06-09 → 2022-06-12
  • Spatial extent-180, -85.009, 179.996, 85.045
  • FormatsCOG

What you can do with it

  • Follow rainfall, floods and surface-water extent
  • Track soil moisture and the onset of drought
  • Monitor lakes, rivers and groundwater storage
Official description

This Level-3 (L3) soil moisture product provides a daily composite of global land surface conditions retrieved by the Soil Moisture Active Passive (SMAP) L-Band radiometer. The daily data here were collected from the descending (local solar time of 6 am) and ascending (local solar time of 6 pm) passes.

Get the data

veda_access.py
# NASA VEDA — open STAC API, anonymous (cloud-optimized GeoTIFFs)
from pystac_client import Client

cat = Client.open("https://openveda.cloud/api/stac")
col = cat.get_collection("smap-L3-soil-moisture-AM-v1")
items = list(col.get_items())          # browse the analysis-ready COGs
# open an asset with rioxarray:
# import rioxarray; da = rioxarray.open_rasterio(items[0].assets["cog_default"].href)
NASA VEDA is an open STAC catalog — browse and stream the cloud-optimized GeoTIFFs anonymously (no login).