Weather data used to process soil moisture (SMAP)
What it measures. Holds supporting weather and atmosphere data — surface and atmospheric conditions from a weather model — provided at hourly and 3-hourly intervals.
How it's made. Drawn from NASA's GEOS-5 weather model (not from the satellite itself) and packaged specifically to support processing of SMAP soil-moisture data.
How & where you'd use it. A behind-the-scenes ancillary input: it supplies the atmospheric context needed to turn SMAP's raw measurements into accurate soil-moisture products, rather than being used on its own.
What's measured
Coverage & cadence
- Time span2015-01-31 → ongoing
- Measured byMODELS (NOT APPLICABLE)
- Processing levelLevel NA
- Spatial extent-180, -86.4, 180, 86.4
- FormatsnetCDF-4
- StatusACTIVE
What you can do with it
- Map air pollutants — NO₂, aerosols, ozone
- Track greenhouse gases and Earth's energy budget
- Feed weather and air-quality analysis
Official description
This ancillary SMAP product contains three dynamic GMAO GEOS-5 modeled data sets. Each data set contains surface and atmospheric parameters pertinent to SMAP provided in 1) hourly, 2) 3-hour, and 3) averaged over 3-hour intervals.
Get the data
import earthaccess
earthaccess.login(strategy="netrc") # free Earthdata Login
results = earthaccess.search_data(
short_name="SMAP_L1_L3_ANC_GEOS",
version="1",
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
- 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
- Quickly download a few files using a web browser, or access data through a command-line utility such as WGET. 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
- USER'S GUIDE VIEW RELATED INFORMATION
- SMAP Ancillary File Read Me VIEW RELATED INFORMATION