Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Merging Satellite and Gauge-Measured Precipitation Using LightGBM With an Emphasis on Extreme Quantiles

Hristos Tyralis, Georgia Papacharalampous, Nikolaos Doulamis, Anastasios Doulamis

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing · 2023

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Summary

Knowing the actual precipitation in space and time is critical in hydrological modelling applications, yet the spatial coverage with rain gauge stations is limited due to economic constraints. Gridded satellite precipitation datasets offer an alternative option for estimating the actual precipitation by covering uniformly large areas, albeit related estimates are not accurate. To improve precipitation estimates, machine learning is applied to merge rain gauge-based measurements and gridded satellite precipitation products. In this context, observed precipitation plays the role of the dependent variable, while satellite data play the role of predictor variables. Random forests is the dominant machine learning algorithm in relevant applications. In those spatial predictions settings, point p

Source type
Peer-reviewed study
DOI
10.1109/jstars.2023.3297013
Catalogue ID
SNmohku38t-ro9h2r
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