Skip to content. | Skip to navigation

Personal tools
You are here: GES DISC Home Hydrology Data Holdings Parameters AVERAGE LAYER SOIL MOISTURE

AVERAGE LAYER SOIL MOISTURE

Other Names

None

Definition

Average layer soil moisture is the depth-averaged amount of water present in a specific soil layer beneath the surface. Soil moisture content can be measured by Gravimetric Soil Moisture (GSM). It is the mass of water compared to the mass of solid materials per unit volume of soil. Soil moisture can also be expressed in Volumetric Soil Moisture (VSM) which is the volume of water per unit volume of soil. As water is of a known density, the mass of water per unit volume of soil (g/cm^3) can be easily determined.

red dice Information for Educators (DICCE Project)

In the Land Data Assimilation Systems (LDAS), the number of vertical levels for soil moisture is model specific. Please follow the table below for the correct depths of soil layers.  

 

GLDAS

Vertical Layers

CLM (10 layers) 0-0.018, 0.018-0.045, 0.045-0.091, 0.091-0.166, 0.166-0.289, 0.289-0.493, 0.493-0.829, 0.829-1.383, 1.383-2.296, and 2.296-3.433 m.
Mosaic (3 layers) 0-0.02,0.02-1.50, and 1.5-3.50 m.
NOAH (4 layers) 0-0.1, 0.1-0.4, 0.4-1.0, and 1.0-2.0 m. 
VIC (3 layers) 0-0.1, 0.1-0.4, 0.4-1.0, and 1.0-2.0 m. 

 

NLDAS

Vertical Layers

Mosaic (6 layers) 0-10, 0-40, 0-100, 0-200, 10-40, and 40-200 cm.
NLDAS (6 layers) 0-10, 0-100, 0-200, 10-40, 40-100, and 100-200 cm.

 

 

Applications

  1. Evaporation and runoff modeling
  2. Agriculture issues
  3. Water cycle
  4. Energy cycle
  5. Weather forecast
  6. Climate prediction model

GES DISC Datasets

To access products that have a specific parameter click on the corresponding 'data access' links in the table below.

Parameter Units Platform /Instrument Data
Begin Date End Date Access Doc
Average Layer Soil Moisture kg/m^2 GLDAS Model 1979 present ftp Y
Average Layer Soil Moisture kg/m^2 NLDAS Model 1979 present ftp Y

Other sources for data

  1. LDAS
  2. NWS CPC
  3. GSMDB
  4. GMAO

 

 

Document Actions
NASA Logo - nasa.gov
NASA Privacy Policy and Important Notices
Last updated: Apr 17, 2014 08:39 AM ET
Top