Moisture availability is defined as the amount of water available for transpiration above the wilting point. For each layer, it is defined as:
SM - WP
moisture availability[%] = -------------
POR - WP
where SM = soil moisture, WP = wilting point, and POR = porosity; all values expressed in % volume of that layer. If the SM is less than the WP (such as extended dry period), then the numerator will be negative, resulting in a negative moisture availability.
- Water cycle
- Energy cycle
- Weather forecast
- 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.
|Begin Date ||End Date ||Access ||Doc |
|Moisture availability ||% ||NLDAS Model ||1979 ||present || ftp ||Y |
Other sources for data