Press the "Apply" button in the app below for a demonstration run. Large number of days can take a few minutes to calculate. See the SME wiki for detailed instructions on how to use this application for your location and other information.

Soil Moisture Estimator

Latitude:
Longitude:
ETo value (mm):
Latitude:
Longitude:
ETo value (mm):
Latitude:
Longitude:
ETo value (mm):
Latitude:
Longitude:
Precip value (mm):
Latitude:
Longitude:
Precip value (mm):
Latitude:
Longitude:
Precip value (mm):
Run results:

Soil upper layer total water content (mm) for location & run days:
Soil lower layer total water content (mm) for location & run days:
Location (dec. deg)
Dates (yyyymmdd)
No file selected.
No file selected.
No file selected.
No file selected.
Save location and dates
Load location and dates

To execute a run reflecting your local conditions, you can create and input your own crop, soil, irrigation and rain input files. The values in your files will be used, not the default values. To use your own files see our SME wiki, Create 'csv' files for formatting instructions on each of the input files.


Yachay.openfabtech.org thanks the following open source software providers. Their code made many of the screen graphic elements of our application much easier to accomplish: OpenSeadragon, OpenSeadragonImagingHelper, Knockout, Flot, D3.

The Soil Moisture Estimator couples the FAO prescribed method for calculating hourly standard reference evapotranspiration with the Sacramento Soil Moisture Accounting model.

Climate data is derived from the Weather Research and Forecasting program calculated on an hourly basis at 3.3km resolution. Re-analyzed forcing files are used in a "hindcast" manner.

Numerical calculations use the modeled 3.3km ETo and precipitation data. The images show these atmospheric surface loads at 3.3km, 10km and 30km resolutions per pixel. Hover over the images with a mouse to get pixel values.