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Proceedings Paper

Comparison of total cloud cover (ERA-Interim) and precipitation (GPCC) over Mongolia and southern part of Eastern Siberia in July
Author(s): Elena V. Devyatova; Olga Yu. Antokhina; Pavel N. Antokhin; Vladimir I. Mordvinov; Inna V. Latysheva
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Paper Abstract

We have compared Total Cloud Cover (TCC) data from ECMWF ERA-Interim reanalysis project and precipitation data from the GPCC project in July over 1979 – 2016. The region of our special interest covers Mongolia and southern part of Eastern Siberia. The models predict TCC. It is subject to errors related to physical parameterizations used in the model and needs to be examined. А precipitation from GPCC is a set of observation data interpolated into regular grid points. Although precipitation is indirectly related to cloudiness, we revealed a good agreement in interannual dynamics between two data sets over the region excluding the period 1982 – 1989 with the poor agreement (overestimated TCC data). This fact allows us to use TCC for the study of atmospheric circulation features over Mongolia and southern part of Eastern Siberia in the years with the good agreement of data. We revealed that precipitation intensity in the region depends on East Asian summer monsoon intensity. We also revealed that the atmospheric blocks over Eastern Siberia (90°E – 120°E) were observed for high TCC values and positive precipitation anomalies over the Selenga River basin (1990 and 1993) and there were no blocks over Eastern Siberia for low TCC values and negative precipitation anomalies (1980 and 2007).

Paper Details

Date Published: 18 December 2019
PDF: 5 pages
Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112086M (18 December 2019); doi: 10.1117/12.2538640
Show Author Affiliations
Elena V. Devyatova, Institute of Solar-Terrestrial Physics (Russian Federation)
Olga Yu. Antokhina, V. E. Zuev Institute of Atmospheric Optics (Russian Federation)
Pavel N. Antokhin, V. E. Zuev Institute of Atmospheric Optics (Russian Federation)
Vladimir I. Mordvinov, Institute of Solar-Terrestrial Physics (Russian Federation)
Irkutsk State Univ. (Russian Federation)
Inna V. Latysheva, Irkutsk State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11208:
25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii; Gennadii G. Matvienko, Editor(s)

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