Water & Wetlands

The terraPulse Surface Water dataset maps inundation of the ground surface by liquid, unfrozen water—either categorically at any point in time or proportionally over longer intervals—and is available globally at up to 10-meter resolution from 1984 to present. Through the terraPulse Land Cover Layer, the Surface Water layer is also available as a binary measurement at 1-meter resolution, with historical coverage depending on availability of high-resolution imagery. Certainty of continuous data products is represented by Root Mean Square Error, and certainty of categorical products is represented by probability of class membership.

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Surface Water

Water

The terraView dashboard showing the terraPulse hydroperiod layer (2020) over the Lena River Delta in Russia. The background image is a high-resolution satellite image. The yellow-blue colors are the percentage of the year each pixel was inundated with (liquid) water.

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Standard Data Products

Unit: percent of area

Scale:

            Spatial:  up to 30-m resolution, global extent

            Temporal: up to monthly resolution from 1984 – present 

Latency: previous year

Unit: percent of observations detected as inundated

Scale:

            Spatial: up to 30-m resolution, global extent

            Temporal: up to annual resolution from 1984 – present 

Latency: previous year

Unit: years since most recent inundation

Scale:

            Spatial: up to 30-m resolution, global extent

            Temporal: up to annual resolution from 1984 – present 

Latency: previous year

Case Studies

The Chinese Academy of Sciences uses terraPulse to study shrinking water bodies across central Asia
The United Nations Green Climate Fund uses terraPulse to study wetland urbanization in Laos
Scientists at the University of Michigan use terraPulse to study drought in the Western US.

Case Studies

surface of body
sea waves crashing
underwater view of
Unit:

percent of area

Scale:

Spatial: 30-m resolution, global extentextent
Temporal: annual resolution from 1984 – present

Source:

terraPulse

Latency:

previous year

snaking river deltas
Water
suburban and city
Urban & Developed
forest density map
Cropland
terrapulse pin on
Indices
crop growing season
Phenology
rivers and temperature
Terrain
united states forest
Ownership
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