In brief
Operational satellite precipitation products often struggle during Mediterranean flash floods due to rapid convective dynamics and steep orography. Auditing half-hourly GPM IMERG estimates against high-density rain-gauge networks quantifies pixel-scale spatial displacement, severe peak attenuation, and gauge co-availability limits, defining empirical boundaries for satellite-driven hydrological and flood modeling.
Contribution
A rigorous empirical audit of sub-daily GPM IMERG satellite estimates during Mediterranean extreme precipitation, quantifying pixel displacement, peak attenuation, and gauge representation uncertainty.
Key finding
GPM IMERG captures general temporal dynamics during extreme events but exhibits significant peak attenuation and spatial misalignment at half-hourly resolution, setting empirical bounds for operational flood and hydrological risk modeling.
Models and data
Distinctive research elements
Models and methods
- GPM IMERG V07
- Sub-daily coarsening audit
- Displacement & attenuation diagnostics
Data and evaluation
- GPM IMERG half-hourly precipitation
- AEMET & CHJ rain-gauge network
Publication overview
About this work
A complete author-written abstract is not yet reproduced on this page. Follow the DOI to consult the publisher’s definitive record.
Cite this work
BibTeX
@article{semper2026gpm,
title = {Performance limits of GPM IMERG for sub-daily precipitation extremes over the Comunitat Valenciana, eastern Spain: Representativeness, attenuation, and pixel-scale displacement},
author = {Marc Semper and Manuel Curado and Jose F. Vicent and Leandro Tortosa},
journal = {Atmospheric Research},
year = {2026},
eid = {109244},
doi = {10.1016/j.atmosres.2026.109244}
}Always check the publisher record for final volume, issue and page information before citing.