Bias-corrected monthly precipitation data over South Siberia for 1979-2019

Anna Ryazanova; Nadezhda Voropay; Egor Dyukarev

doi:10.1016/j.dib.2021.107440

Bias-corrected monthly precipitation data over South Siberia for 1979-2019

Data Brief. 2021 Oct 5:38:107440. doi: 10.1016/j.dib.2021.107440. eCollection 2021 Oct.

Authors

Anna Ryazanova¹, Nadezhda Voropay^{1

2}, Egor Dyukarev^{1

3}

Affiliations

¹ Institute of Monitoring of Climatic and Ecological System SB RAS, Akademicheskii 10/3, Tomsk 634055, Russia.
² V B Sochava Institute of Geography SB RAS, Ulan-Batorskaya st., 1, Irkutsk 664033, Russia.
³ Yugra State University, Chekhov st. 16, Khanty-Mansiysk 628012, Russia.

Abstract

Bias-Corrected Precipitation data over South Siberia (CPSS) contains monthly precipitation data for the area within the coordinates 50-65 N, 60-120 E for the period from January 1979 to December 2019. CPSS data were combined from monthly total precipitation data from ERA5 reanalysis European Centre for Medium-Range Weather Forecasts and precipitation data records from ground weather stations. The ERA5 data were scaled according to the derived scale coefficient. The linear scaling coefficient for each month and weather station were calculated and extrapolated to the study area using the ordinary kriging method. Data spatial resolution is 0.25° in the latitude and 0.25° in the longitude. CPSS reproduces the spatial variability of precipitation more precisely than can be done from the weather station observation network. The CPSS dataset will be useful for the study of extreme precipitation events and allow for more accurate hydrologic risk assessment at a regional level based on climate model results.

Keywords: Bias correction; Downscaling; Precipitations; Reanalysis; South Siberia.