Bromand et al. (2026) An Integrated Multi-Criteria and Hydrological Consistency Framework for Evaluating Latest Satellite-Based Winter Precipitation Products in Himalayan Basins

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

Identification

• Journal: Remote Sensing
• Year: 2026
• Date: 2026-03-31
• Authors: Mohammad Tayib Bromand, Mohamed Rasmy, Katsunori Tamakawa, Subash Tuladhar, Toshio Koike
• DOI: 10.3390/rs18071051

Research Groups

Not explicitly mentioned in the provided text.

Short Summary

This study develops a new multi-criteria evaluation method for satellite-based winter precipitation products (SPPs) by adding spatial correlation and water balance consistency, finding that IMERG Final V07 and GSMaP NRT V08 are the most suitable for different applications in the Himalayan region.

Objective

• To present a new SPP evaluation method that extends existing frameworks by adding two additional indicators—spatial correlation and the water balance consistency ratio (WBCR)—to create a unified multi-criteria matrix for selecting spatially and hydrologically consistent products from among 11 latest and earlier SPPs from the Global Satellite Mapping of Precipitation (GSMaP) and The Integrated Multi-satellite Retrievals for the Global Precipitation Measurement Mission (IMERG) in the Kabul, Dudhkoshi, and Chamkharchu River basins.

Study Configuration

• Spatial Scale: Kabul, Dudhkoshi, and Chamkharchu River basins (Himalayan region).
• Temporal Scale: Winter precipitation events.

Methodology and Data

• Models used: Not applicable (evaluation of data products). Evaluated products include 11 latest and earlier Satellite-based Winter Precipitation Products (SPPs) from Global Satellite Mapping of Precipitation (GSMaP) and The Integrated Multi-satellite Retrievals for the Global Precipitation Measurement Mission (IMERG).
• Data sources: Satellite-based winter precipitation products (SPPs).

Main Results

• The latest non-calibrated SPPs performed significantly better than earlier releases, demonstrating improved ability to capture precipitation events, spatial heterogeneity, and WBCR across all three basins.
• The performance of SPPs varies substantially across regions.
• GSMaP gauge-calibrated product performance was more consistent across conventional multi-criteria assessment and WBCR, but its inability to capture spatial heterogeneity limits its applicability for sub-catchment water resource management.
• IMERG Final V07 (gauge-calibrated) performed exceptionally well across all regions, although its 3.5-month latency limits near-real-time applications.
• GSMaP NRT V08 is suitable for real-time applications, given its short ~4-hour latency and relatively good performance across all three basins.

Contributions

• Introduction of a new SPP evaluation method incorporating spatial correlation and the water balance consistency ratio (WBCR) into a unified multi-criteria matrix.
• Rigorous evaluation and inter-comparison of 11 latest and earlier GSMaP and IMERG SPPs in the Himalayan region.
• Identification of suitable SPPs (IMERG Final V07 for accuracy, GSMaP NRT V08 for real-time applications) for different water resource management needs in the region.

Funding

Not explicitly mentioned in the provided text.

Citation

@article{Bromand2026Integrated,
  author = {Bromand, Mohammad Tayib and Rasmy, Mohamed and Tamakawa, Katsunori and Tuladhar, Subash and Koike, Toshio},
  title = {An Integrated Multi-Criteria and Hydrological Consistency Framework for Evaluating Latest Satellite-Based Winter Precipitation Products in Himalayan Basins},
  journal = {Remote Sensing},
  year = {2026},
  doi = {10.3390/rs18071051},
  url = {https://doi.org/10.3390/rs18071051}
}