LGRIP30: Global Irrigated Cropland Map at 30m Resolution

Landsat-Derived Global Irrigated-Cropland Product Level 2 2020 (LGRIP30_L2_IRRI) Version 2 provides a 30-meter resolution global map of agricultural land use. It classifies irrigated cropland into single, double, and continuous crop types using Landsat 8 time-series data from 2019-2021 to create a nominal 2020 product. The dataset is an extension of the Global Food Security-support Analysis Data (GFSAD) project and currently covers only the conterminous United States, with global coverage planned for a later date.

Use Cases

• Mapping irrigation extent and intensity based on single, double, and continuous crop classifications.
• Assessing agricultural water use for food security analysis using the high-resolution cropland data.
• Analyzing land use change over time by comparing this 2020 product with the previous 2015 version (LGRIP30 V1).
• Validating regional water management models with the dataset's accuracy assessment layer included in each file.

Strengths

• Provides high-resolution 30-meter spatial detail for cropland classification.
• Uses a multi-year Landsat 8 time-series (2019-2021) to create a robust nominal 2020 product.
• Represents a significant improvement over the previous version (V1), aiming to reduce classification errors.
• Includes an accuracy assessment layer within each GeoTIFF file for validation.

Limitations

• Spatial coverage is currently limited to the conterminous United States (CONUS); global data is not yet available.
• Metadata completeness is low, with column names, row counts, and specific license terms not provided across sources.
• There is a conflict in the 'last updated' metadata, with dates ranging from 2021-12-31 to 2026-04-10.

Provenance

Source

LPCLOUD, as an extension of the USGS Global Food Security-support Analysis Data (GFSAD) project.

Collection Method

Produced using Landsat 8 Operational Land Imager (OLI) time-series satellite sensor data.

Time Range

2019-2021 (nominal year 2020)

Freshness

2026-04-10 01:37:39.170008

Geography

Conterminous United States (CONUS); global coverage intended.