Yearly Global Evapotranspiration and Latent Heat Flux at 500m Resolution

MODIS/Aqua Net Evapotranspiration Yearly L4 Global 500m SIN Grid V006 provides yearly composites of evapotranspiration and latent heat flux data. The dataset was produced by LPCLOUD using an algorithm based on the Penman-Monteith equation, incorporating MODIS remote sensing and meteorological reanalysis data. This specific version was decommissioned on July 31, 2023.

Use Cases

• Model regional water budgets by analyzing the yearly sum Evapotranspiration (ET) layer.
• Assess surface energy partitioning using the yearly average Latent Heat Flux (LE) layer.
• Estimate irrigation demand or drought conditions by comparing Evapotranspiration (ET) and Potential ET (PET) layers.
• Validate climate or hydrological models with the 500m resolution quality control layer.

Strengths

• Spatial resolution increased to 500 meters from 1,000 meters in the previous version.
• Algorithm incorporates daily meteorological reanalysis and MODIS data on vegetation, albedo, and land cover.

Limitations

• The dataset is deprecated and users are directed to a newer version (MYD16A3GF V6.1).
• Operational and uncertainty issues are documented but require consulting external user guides.

Provenance

Source

NASA Earthdata (LPCLOUD), derived from MODIS/Aqua sensor.

Collection Method

Generated using a Penman-Monteith based algorithm applied to MODIS remote sensing and meteorological reanalysis data.

Time Range

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Freshness

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Geography

Global