Quantitative aspect in circulation type classifications – An example based on evaluation of moisture flux anomalies

0348503 - ÚFA 2011 RIV GB eng J - Journal Article
Müller, Miloslav - Kašpar, Marek
Quantitative aspect in circulation type classifications – An example based on evaluation of moisture flux anomalies.
Physics and Chemistry of the Earth. Roč. 35, 9-12 (2010), s. 484-490. ISSN 1474-7065. E-ISSN 1873-5193
R&D Projects: GA AV ČR KJB300420701; GA AV ČR KJB300420802
Institutional research plan: CEZ:AV0Z30420517
Keywords : Circulation type classification * moisture flux * extreme precipitation * extremeness of meteorological variables, seasonality of heavy rains * seasonality of heavy rains
Subject RIV: DG - Athmosphere Sciences, Meteorology
Impact factor: 0.917, year: 2010

The paper is motivated by the effort to add the quantitative aspect into the process of classification of circulation types and to enable the comparison of various regions from the viewpoint of synoptic-dynamical causes of hydro-meteorologically extreme events. Three-day grid-related means of zonal and meridional components of moisture flux were used as the criterion for the suggested circulation type classification. The method was applied to heavy rain events which occurred in warmer half-years 1958-2002 within selected Central-European river basins. Central-European extreme rain events were accompanied with extra significant moisture flux anomalies. We detected four regions with different circulation types responsible for heavy rains and demonstrated a close relation between dominant circulation type and the seasonal distribution of heavy rain events in the regions.
Permanent Link: http://hdl.handle.net/11104/0189028