The Maproom monitors daily water balance and puts it in historical context.
The water balance algorithm is described in the IRI DL Function Documentation. The water balance is run from 365 days prior to last day of available rainfall station data. Planting date and Kc parameters are defined by the user. The current situation can be compared with another past growing season of interest where again the planting date and Kc parameters can be defined.
Different water balance outputs can be plotted on a map for a given day (by default last day of available rainfall station data) or as a time series for a given soil type location. The time series will be shown starting at current season planting date and ending on the last day of available rainfall station data. See the Options tab for a detailed description of the available outputs.
Both Crop Cultivars Kc (for the current and past seasons) are also plotted for reference and visualization.
The KSPM was produced by the International Research Institute for Climate and Society (IRI) for review by the United States Agency for International Development and partners on the BAWP and do not necessarily reflect the views of USAID.
Water Balance Outputs:
Soil Moisture: soil moisture (in mm).
Reduced Crop ET: Reduced Crop Evapo-Transpitation represents the amount of water that the plant could
actually use.
Effective Precipitation: effective precipitation represents the amount of rainfall that actually contributed
to the soil-plant-water balance, and not lost to runoff.
Crop Satisfaction:
Crop satisfaction is defined as the ratio of reduced ET crop and ET crop and as a
result represents how well the crop could use water for optimized growth.
Water Stress: the cumulative number of days when the Crop Satisfaction index was lower than 1.
It can represent the persistence of drought conditions.
Percent Available Water: PAW is defined as the percentage of available water, ie the ratio of soil moisture
with total available water.
Water Excess: the cumulative number of days when PAW is 100%. It can represent the risk of flooding
conditions.
Daily precipitation: daily stations precipitation from the Department of Agriculture.
Daily mean temperature: WORLDCLIM linearly interpolated from monthly climatological values to daily, and geographically selected at the station locations.
Daily temperature amplitude: WORLDCLIM linearly interpolated from monthly climatological values to daily, and geographically selected at the station locations.
Total Available Water: TAW derived from Bicol soil type textures with the from Soil Hydraulic Function - Mualem-Van Genuchten Model and the UNSODA databse.
Contact help@iri.columbia.edu with any technical questions or problems with this Map Room.