Using the isentropic analysis for the operational short-range weather forecast

Autor:	Yu. I. Yusupov
Rok vydání:	2012
Předmět:	Fluid Flow and Transfer Processes Convection Atmospheric Science Meteorology Anomaly (natural sciences) Vorticity Troposphere Isentropic analysis Convective instability Potential vorticity Climatology Environmental science Precipitation Water Science and Technology
Zdroj:	Russian Meteorology and Hydrology. 37:28-33
ISSN:	1934-8096 1068-3739
DOI:	10.3103/s1068373912010049
Popis:	The software is described, developed within the meteorological geographical information system (GIS Meteo) technology, intended for the operational plotting of isentropic analysis charts. The study of atmospheric processes is carried out by the example of a concrete event, an unexpectedly heavy snowstorm in Moscow region on December 7, 2009. It is revealed that the potential vorticity anomaly formed over Moscow region favored the generation of cyclonic circulation in the lower troposphere and the ascent of the air being close to the saturation. According to the observation data, the precipitation was of convective type, although no convective instability was revealed. The study of the equivalentpotential vorticity evolution in the lower troposphere demonstrated the presence of conditional symmetric instability causing the development of the moist slantwise convection.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::351301fa6a8bbe70ade4d6990de9e36a https://doi.org/10.3103/s1068373912010049 Zobrazit plný text záznamu Full text from SpringerLink