Pre-operational runs of atmospheric model COSMO-Ru with initial snow data from 1D multilayer snow model SnoWE

Churiulin, E.; Kopeykin, V.; Rozinkina, I.

Авторы: Churiulin E., Kopeykin V., Rozinkina I.
Сборник: ICARUS
Тезисы
Год издания: 2019
Место издания: Deusher Wetterdienst Offenbach
Первая страница: 59
Последняя страница: 59
Аннотация: Pre-operational runs of atmospheric model COSMO-Ru with initial snow data from 1D multilayer snow model SnoWE V. Kopeykin(1), E. Churiulin (1, 2), I. Rozinkina (1, 2) (1) Hydrometcenter of Russia, (2) Lomonosov Moscow State University The main purpose of the research is applying of snow data from SnoWE program complex in COSMO-Ru system as a source of initial snow water equivalent (SWE) data instead of the current ICON snow data (for the territory of the Russian Federation). The comparisons of ICON DAS SWE values with hydrological snow measurements are demonstrated some serious inaccuracies for the territory of the Russian Federation with permanent snow cover. The research were done for two time periods from 01.09.2017 to 01.06.2018 and from 01.09.2018 to current data with different spatial resolution steps (COSMO-Ru13 – 13 km: all territory of Russia and neighboring areas; COSMO-Ru7 – 7 km: European part of Russia and the nearest areas, COSMO-Ru2 – 2.2 km: Central Russian regions) in quasi-operational mode. The fields of snow cover from SnoWE (with ICON data as first guess fields) contains less errors, are a positive alternative of ICON data. The SnoWE program complex is based on the 1-d multilayer model of snow evaluation for synoptic meteorological stations based on synoptic measurements. The 1-d multilayer model calculates daily values of SWE and changes in snow density (SD). In the SnoWE program complex, two different schemes of the modelling of SWE and SD values are implemented. The first one consists on calculations for points of stations another one - for grid points. For this research, we used both of them for formed the final report about COSMO-Ru T2m forecast tests. SnoWE have applied for snow monitoring and as a source of daily SWE data for hydrologists since 2014 year. This is especially important for prediction of spring floods. Some results of runs COSMO-Ru model based on the SnoWE initial SWE data are shown on the example of sensitivity of T2m forecasts.
Добавил в систему: Чурюлин Евгений Викторович

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