RCIN and OZwRCIN projects

Object

Title: Factors inhibiting convection under conditions of extreme atmospheric instability

Creator:

Palarz, Angelika ; Celiński-Mysław, Daniel

Date issued/created:

2017

Resource type:

Text

Subtitle:

Geographia Polonica Vol. 90 No. 1 (2017)

Publisher:

IGiPZ PAN

Place of publishing:

Warszawa

Description:

24 cm

Degree grantor:

convection inhibition ; atmospheric instability indices ; Poland ; upper air sounding

Type of object:

Journal/Article

Abstract:

The paper identifies mechanisms that potentially inhibit convection at a time when extreme values of selected atmospheric instability indices are recorded. The study involved six indices (LI, SI, CAPE, KI, SWEAT, TTI). Data sources involved records from three Polish data stations collecting upper air soundings and covered the period 2005-2014. Additional data were obtained from SYNOP codes on present and past weather and reports on severe meteorological phenomena from the European Severe Weather Database. The methodology adopted allowed the selection of 26 cases where no convective phenomena were observed despite extreme atmospheric instability. A detailed analysis demonstrated that the occurrence of isothermal or inversion layers in the lower and middle troposphere were the most frequent mechanisms inhibiting the vertical air movement. Convection was also inhibited when the area was free from the influence of atmospheric fronts, convergence zones, lowpressure troughs or when high altitudes of LCL occurred.

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Relation:

Geographia Polonica

Volume:

90

Issue:

1

Start page:

39

End page:

51

Detailed Resource Type:

Article

Format:

File size 4,1 MB ; application/pdf

Resource Identifier:

oai:rcin.org.pl:61909 ; 0016-7282 ; 10.7163/GPol.0077

Source:

CBGiOS. IGiPZ PAN, call nos.: Cz.2085, Cz.2173, Cz.2406 ; click here to follow the link

Language:

eng

Rights:

Creative Commons Attribution BY-SA 3.0 PL license

Terms of use:

Copyright-protected material. [CC BY-SA 3.0 PL] May be used within the scope specified in Creative Commons Attribution BY-SA 3.0 PL license, full text available at: ; -

Digitizing institution:

Institute of Geography and Spatial Organization of the Polish Academy of Sciences

Original in:

Central Library of Geography and Environmental Protection. Institute of Geography and Spatial Organization PAS

Projects co-financed by:

European Union. European Regional Development Fund ; Programme Innovative Economy, 2010-2014, Priority Axis 2. R&D infrastructure

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