DWDiag-CHM: Dynamic-Weight Precipitation Fusion Records for Mainland China, 2000–2023

Mainland China is covered by this dataset of diagnostic records from a multi-source precipitation fusion workflow at 0.1° resolution from June 2000 to December 2023. It includes station-scale and grid-scale data generated from a reference of 2,382 quality-controlled gauges and 17.77 million station-days. The records support analysis of learned dynamic weights, candidate-member behavior, fused estimates, and residual-risk indicators.

Use Cases

• Analyze the empirical credibility allocations of different precipitation products based on the stored dynamic weight vectors.
• Evaluate fused precipitation estimates against gauge observations using the station-day candidate values and residuals.
• Study candidate-member behavior and disagreement using gridded diagnostic fields like dominant-member frequency and entropy.
• Calibrate residual-risk indicators and assess structural confidence using the provided calibration and sensitivity outputs.

Strengths

• Covers a long temporal range from 1 June 2000 to 31 December 2023.
• References a substantial network of 2,382 quality-controlled gauges and 17.77 million complete station-days.
• Includes multiple candidate precipitation products (ERA5-Land, GPM, GSMaP, MSWEP, PDIR-Now) and derived candidates.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the gauge network and candidate products over mainland China.

Provenance

Source

Author: Hao Chen. Platform: figshare.

Collection Method

Generated from a 0.1° daily multi-source precipitation-fusion workflow.

Time Range

2000-06-01 to 2023-12-31

Freshness

Last updated 2026-05-29 07:36:16; freshness should be verified.

Geography

Mainland China