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NASA SPoRT Land Information System

The NASA Short-term Prediction Research and Transition (SPoRT) Center has developed a Real-Time Land Information System (LIS), using satellite-derived datasets, ground-based observations, and model reanalysis to inform weather models with influences from the land surface. 

URL: https://weather.msfc.nasa.gov/sport/case_studies/lis_CONUS.html

Products are updated on a daily basis and include:

  • Volumetric Soil Moisture represents actual moisture in a soil column
  • Relative Soil Moisture represents the soil moisture for a given soil column on a relative scale between soil saturation and wilting levels
  • Column-Integrated Relative Soil Moisture combines 4 column depths down to 200cm
  • Green Vegetation Fraction (current and Trends) from VIIRS
  • Land surface temperature and Heat Flux

Soil Moisture products evaluate conditions at five levels:

  • 0-10 cm (relates most directly to the FWI Duff Moisture Code, or DMC)
  • 10-40 cm (relates most directly to the FWI Drought Code, or DC)
  • 40-100 cm
  • 100-200 cm
  • 0-200 cm Integrated Column

Available at 3km resolutions for the Continental US (CONUS), analysts should consider using the:

Column-Integrated Relative Soil Moisture products to assess current drought levels and changes over 1 week, 2 weeks, 1 month, 3 months, 6 months, and 1 year.

Green Vegetation Fraction products that are updated daily in lieu of NDVI that are updated on only a weekly basis. Current conditions are augmented by 1-month, 2-month, 3-month, 4-month, and 1-year change products. 

Relative Soil Moisture products that may be correlated to fuel moisture contents applied in fire effects and fire spread models. A 0-10 cm 1-day change product provides an assessment of rainfall effects on the top soil layer that relates to fuel moisture in carrier fuels.

SPoRT LIS 0-200 cm Relative Soil Moisture Percentage