Soil Water Content

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About Soil Water Content

Soil water content is the measure of the amount of water present in a unit volume of soil. It is typically expressed as a percentage and represents the ratio of the volume of water to the total volume of the soil. This measurement is crucial for understanding the water status of the soil, providing insights into factors like drought monitoring, soil health, and hydrological processes.

The Soil Water Content Planetary Variable provides near-daily measurements of soil water content data with spatial resolution of 100 m and 1000 m. It is unhindered by clouds and has a long and consistent data record of more than 20 years, eliminating the need for maintaining large networks of physical sensors.

Basic facts

PropertyInfo
Spatial resolution100 m, 1000 m
SensorSMAP, AMSR-E, AMSR-E, Sentinel 2
Revisit time137-365 observations per year
Spatial coverageGlobal
Data availability1000 m (2002 - present), 100 m (2017 - present)
Common usage/purposeDrought-index insurance, water management, sowing date assessment, soil compaction, preventing water stress, flood risks mitigation, improving irrigation models, fire risk assessment, improving hydrological models

Planet documentation for Soil Water Content: https://developers.planet.com/docs/planetary-variables/soil-water-content/

Planet Product Specification for Soil Water Content: https://assets.planet.com/docs/Planet_soil_water_content_product_specification.pdf

Subscribing to Soil Water Content

To subscribe to Soil Water Content, use the TPDI subscriptions endpoint or EO-Browser's Commercial Data tab with the following type and id values:

typeidDescription
soil_water_contentSWC-AMSR2-C_V1.0_100Soil Water Content data derived from the AMSR2 instrument in the C-band frequency range, with a spatial resolution of 100 meters. The available archive period is from July 1, 2017 to present.
soil_water_contentSWC-AMSR2-X_V1.0_100Soil Water Content data derived from the AMSR2 instrument in the X-band frequency range, with a spatial resolution of 100 meters. The available archive period is from July 1, 2017 to present.
soil_water_contentSWC-SMAP-L_V1.0_100Soil Water Content data derived from the SMAP mission using L-band radiometry, with a spatial resolution of 100 meters. The available archive period is from July 1, 2017 to present.
soil_water_contentSWC-AMSR2-C_V2.0_100Soil Water Content data derived from the AMSR2 instrument in the C-band frequency range, with a spatial resolution of 100 meters. The available archive period is from July 1, 2017 to present.
soil_water_contentSWC-AMSR2-X_V2.0_100Soil Water Content data derived from the AMSR2 instrument in the X-band frequency range, with a spatial resolution of 100 meters. The available archive period is from July 1, 2017 to present.
soil_water_contentSWC-SMAP-L_V2.0_100Soil Water Content data derived from the SMAP mission using L-band radiometry, with a spatial resolution of 100 meters. The available archive period is from July 1, 2017 to present.
soil_water_contentSWC-AMSRE-C_V4.0_1000Soil Water Content data derived from the AMSR-E instrument in the C-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from June 15, 2002 to October 04, 2011.
soil_water_contentSWC-AMSRE-X_V4.0_1000Soil Water Content data derived from the AMSR-E instrument in the X-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from June 15, 2002 to October 04, 2011.
soil_water_contentSWC-AMSR2-C_V4.0_1000Soil Water Content data derived from the AMSR2 instrument in the C-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from July 25, 2012 to present.
soil_water_contentSWC-AMSR2-X_V4.0_1000Soil Water Content data derived from the AMSR2 instrument in the X-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from July 25, 2012 to present.
soil_water_contentSWC-SMAP-L_V4.0_1000Soil Water Content data derived from the SMAP mission using L-band radiometry, with a spatial resolution of 1 kilometer. The available archive period is from April 1, 2015 to present.
soil_water_contentSWC-AMSRE-C_V5.0_1000Soil Water Content data derived from the AMSR-E instrument in the C-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from June 15, 2002 to October 04, 2011.
soil_water_contentSWC-AMSRE-X_V5.0_1000Soil Water Content data derived from the AMSR-E instrument in the X-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from June 15, 2002 to October 04, 2011.
soil_water_contentSWC-AMSR2-C_V5.0_1000Soil Water Content data derived from the AMSR2 instrument in the C-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from July 25, 2012 to present.
soil_water_contentSWC-AMSR2-X_V5.0_1000Soil Water Content data derived from the AMSR2 instrument in the X-band frequency range, with a spatial resolution of 1 kilometer. The available archive period is from July 25, 2012 to present.
soil_water_contentSWC-SMAP-L_V5.0_1000Soil Water Content data derived from the SMAP mission using L-band radiometry, with a spatial resolution of 1 kilometer. The available archive period is from April 1, 2015 to present.

Available Bands

Band NameDescriptionPhysical UnitSource FormatTypical RangeNo Data ValueScale
SWCSoil Water Contentm3/m3UINT160 - 1655350.001
SWC_MaskedPixelsSoil Water Content pixels masked by one or more critical flags from the QF bandm3/m3UINT160 - 1655350.001
QFQuality flagsunitlessUINT16See full description here01

Examples

Subscribing to and visualizing Soil Water Content is illustrated by this example.