AIMERG: Calibrated Asian Precipitation Data (2000-2015)

2000 to 2015 precipitation data for Asia at a 0.1-degree spatial and half-hourly temporal resolution. The dataset was created by researchers from Peking University, calibrating GPM IMERG satellite data with APHRODITE ground-based observations at a daily scale to improve quality. It covers land areas from 60°E to 150°E and 15°S to 55°N, with data available in GeoTIFF format.

Use Cases

• Calibrating regional climate models based on the high-resolution, quality-improved precipitation estimates.
• Analyzing sub-daily precipitation intensity and frequency for flood forecasting based on the half-hourly temporal resolution.
• Studying long-term precipitation trends and variability across Asia based on the 2000-2015 time range.
• Validating other satellite-derived precipitation products based on the calibrated data quality mentioned in the description.

Strengths

• High spatiotemporal resolution of 0.1 degrees and half-hourly intervals.
• Covers a 16-year time range from 2000 to 2015 for the Asian continent.
• Quality is improved through calibration of GPM IMERG data with APHRODITE ground observations.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total file size are unknown, which may limit suitability assessment.
• Spatial coverage is limited to land areas within the specified Asian bounding box.

Provenance

Source

Peking University

Collection Method

Calibration of GPM IMERG satellite data (0.1°/half-hourly) using APHRODITE ground-based data (0.25°/daily).

Time Range

2000-2015

Geography

Asia (60°E-150°E, 15°S-55°N, land)