articleHydrology and earth system sciencesDec 8, 2017GOLD OA

Global-scale evaluation of 22 precipitation datasets using gauge observations and hydrological modeling

HEHylke E. BeckNVNoemi VergopolanMPMing PanVLVincenzo LevizzaniAIAlbert I. J. M. van Dijk

Princeton University · Institute of Atmospheric Sciences and Climate · +6 more institutions

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Abstract

Abstract. We undertook a comprehensive evaluation of 22 gridded (quasi-)global (sub-)daily precipitation (P) datasets for the period 2000–2016. Thirteen non-gauge-corrected P datasets were evaluated using daily P gauge observations from 76 086 gauges worldwide. Another nine gauge-corrected datasets were evaluated using hydrological modeling, by calibrating the HBV conceptual model against streamflow records for each of 9053 small to medium-sized ( < 50 000 km2) catchments worldwide, and comparing the resulting performance. Marked differences in spatio-temporal patterns and accuracy were found among the datasets. Among the uncorrected P datasets, the satellite- and reanalysis-based MSWEP-ng V1.2 and V2.0…

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Topics & keywords

Topics
Keywords
  • Environmental science
  • Satellite
  • Precipitation
  • Climatology
  • Scale (ratio)
  • Rain gauge
  • Streamflow
  • Gauge (firearms)
UN Sustainable Development Goals
  • Life in Land
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