Li et al. (2026) Comprehensive Evaluation of Multi-Version Global Satellite Mapping of Precipitation (GSMaP) Products over the Qinghai–Tibetan Plateau

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Remote Sensing
• Year: 2026
• Date: 2026-04-10
• Authors: Haowen Li, Yunde Cao, Yong Guo, Chun Zhou, Lingling Wu, Congxiang Fan, Chuanjie Yan, Li Zhou
• DOI: 10.3390/rs18081122

Research Groups

[Information not available in the provided text.]

Short Summary

This study systematically evaluates four GSMaP precipitation products across four versions (v05–v08) over the Qinghai–Tibetan Plateau from 2001 to 2022, finding general performance improvements in later versions, particularly v08 and gauge-corrected products, though uncertainties persist in specific conditions and regions.

Objective

• To systematically evaluate the performance of four GSMaP precipitation products (Gauge, GNRT, MVK, NRT) across four versions (v05–v08) over the Qinghai–Tibetan Plateau from 2001 to 2022, assessing both precipitation amount and event detection against daily station data.

Study Configuration

• Spatial Scale: Qinghai–Tibetan Plateau, evaluated at station scale and regional patterns.
• Temporal Scale: Daily data from 2001 to 2022, analyzed by daily, monthly, seasonal, and annual periods.

Methodology and Data

• Models used: GSMaP (Global Satellite Mapping of Precipitation) products (Gauge, GNRT, MVK, NRT) across versions v05–v08.
• Data sources: Daily in-situ station precipitation observations (reference), GSMaP satellite precipitation products.

Main Results

• GSMaP performance generally improves with later versions, with v08 showing enhanced stability and consistency, particularly for gauge-corrected products.
• Improvements manifest as better agreement with station data and reduced inter-station variability for some products.
• Performance gains are more pronounced in wetter regions and warm seasons.
• Significant uncertainties persist in cold seasons, during strong rainfall events, and in the high-elevation interior of the Qinghai–Tibetan Plateau.
• Gauge correction remains crucial for improving product consistency, as non-gauge products exhibit wider variations.
• Overall, performance improvements from version updates are conditional and not uniform across diverse climate settings, rainfall intensities, or elevation zones.

Contributions

• Provides the first systematic and comprehensive evaluation of multiple GSMaP product versions (v05–v08) over the complex terrain of the Qinghai–Tibetan Plateau for an extended period (2001–2022).
• Offers practical guidance for selecting and utilizing GSMaP products in challenging high-altitude environments.
• Highlights the varying effectiveness of version updates and gauge correction across different climatic conditions, rainfall intensities, and elevations.

Funding

[Information not available in the provided text.]

Citation

@article{Li2026Comprehensive,
  author = {Li, Haowen and Cao, Yunde and Guo, Yong and Zhou, Chun and Wu, Lingling and Fan, Congxiang and Yan, Chuanjie and Zhou, Li},
  title = {Comprehensive Evaluation of Multi-Version Global Satellite Mapping of Precipitation (GSMaP) Products over the Qinghai–Tibetan Plateau},
  journal = {Remote Sensing},
  year = {2026},
  doi = {10.3390/rs18081122},
  url = {https://doi.org/10.3390/rs18081122}
}