Downloads

Water Security (WSIM-GLDAS) Monthly Grids, v1 (1948 – 2014)

Data:

Recommended Citation(s)*:

ISciences, and Center for International Earth Science Information Network - CIESIN - Columbia University. 2022. Water Security Indicator Model - Global Land Data Assimilation System (WSIM-GLDAS) Monthly Grids, Version 1. Palisades, New York: NASA Socioeconomic Data and Applications Center (SEDAC). https://doi.org/10.7927/z1fn-kf73. Accessed DAY MONTH YEAR.

ENW (EndNote & RefWorks)†
RIS (Others)

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This data set contains 38 downloadable files in netCDF (.nc) format that identify and characterize surpluses and deficits of freshwater, and the parameters determining these anomalies, at monthly intervals over the period January 1948 to December 2014. Each downloadable object is a compressed zip file, containing: 1) global raster in netCDF format, 2) Readme, and 3) PDF documentation. The zip files range from 1.5 to 3 GB in volume.

Each "class" of variables contains four time periods (1-month, 3-month, 6-month, and 12-month). These are the variable descriptions:

Composite Surplus and Composite Deficit Index
Composite Surplus Anomalies and Composite Deficit Anomalies
Monthly Potential Minus Actual Evapotranspiration (PETME)
Monthly Total Precipitation Summed over the Integration Period
Maximum Monthly Total Blue Water, or Flow Accumulated Runoff, over all Months in the Integration Period
Minimum Monthly Total Blue Water, or Flow Accumulated Runoff, over all Months in the Integration Period
Total Blue Water, or Flow Accumulated Runoff, Summed over the Integration Period
Total Runoff Summed over the Integration Period
Soil Moisture Averaged over the Integration Period
Monthly Air Temperature Averaged over the Integration Period

Class	Variable
Composite
	Composite One-Month Return Period
	Composite Three-Month Return Period
	Composite Six-Month Return Period
	Composite Twelve-Month Return Period
	Composite Anomaly One-Month Return Period
	Composite Anomaly Three-Month Return Period
	Composite Anomaly Six-Month Return Period
	Composite Anomaly Twelve-Month Return Period

Potential Minus Actual Evapotranspiration (PETME)
	PETME One-Month Return Period
	PETME Summed Three-Month Return Period
	PETME Summed Six-Month Return Period
	PETME Summed Twelve-Month Return Period

Precipitation
	Precipitation One-Month Return Period
	Precipitation Summed Three-Month Return Period
	Precipitation Summed Six-Month Return Period
	Precipitation Summed Twelve-Month Return Period

Runoff
	Runoff One-Month Return Period
	Runoff Summed Three-Month Return Period
	Runoff Summed Six-Month Return Period
	Runoff Summed Twelve-Month Return Period
	Accumulated Runoff One-Month Return Period
	Accumulated Runoff Summed Three-Month Return Period
	Accumulated Runoff Summed Six-Month Return Period
	Accumulated Runoff Summed Twelve-Month Return Period
	Accumulated Runoff Minimum Summed Three-Month Return Period
	Accumulated Runoff Minimum Summed Six-Month Return Period
	Accumulated Runoff Minimum Summed Twelve-Month Return Period
	Accumulated Runoff Maximum Summed Three-Month Return Period
	Accumulated Runoff Maximum Summed Six-Month Return Period
	Accumulated Runoff Maximum Summed Twelve-Month Return Period

Soil Moisture
	Soil Moisture One-Month Return Period
	Soil Moisture Average Three-Month Return Period
	Soil Moisture Average Six-Month Return Period
	Soil Moisture Average Twelve-Month Return Period

Temperature
	Temperature One-Month Return Period
	Temperature Average Three-Month Return Period
	Temperature Average Six-Month Return Period
	Temperature Average Twelve-Month Return Period