The Impact of Circulation Types and their Changing Thermal Properties on the Probability of Days with Snowfall and Rainfall in Poland, 1966–2020 Cover

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The Impact of Circulation Types and their Changing Thermal Properties on the Probability of Days with Snowfall and Rainfall in Poland, 1966–2020

Quaestiones Geographicae

Volume 43 (2024): Issue 3 (September 2024)

By: Ewa B. Łupikasza , Łukasz Małarzewski and Quoc B. Pham

Open Access

|Aug 2024

Figures & Tables

Location of synoptic stations used in this study in Poland (A), and distribution of grids over Poland for which circulation types were identified (B), an example distribution of grids for calculating geostrophic wind used to identify a direction of air advection (C).

Long-term variability in the number of days with precipitation phases averaged over stations (graphs) and spatial distribution of trends (maps) in the number of days with precipitation phases (Sd, solid; Mx, mixed; Lq, liquid, yellow) in the period 1966–2020.

Conditional probability of solid (Sd, blue), mixed (Mx, green) and liquid (Lq, orange) precipitation in circulation types, Poland, 1966–2020, a – boxplots: statistical distribution of the station probabilities of precipitation phases for each circulation type; cross – mean; horizontal line – median; box – 25th and 75the percentiles; whiskers – limits for outliers.

Spatial distribution of the conditional probability of solid (Sd, blue), mixed (Mx, green) and liquid (Lq, orange) precipitation in cyclonic advective circulation types in DJF.

Average air temperature for circulation types, box-plots –average seasonal station air temperature for the entire research period 1966–2020, red cross – mean; horizontal line – median; box – 25th and 75th percentiles; whiskers – limits for outliers (upper panel). Averaged over stations range of change in air temperature between the cold period 1966–1985 and the warm period 2001–2020 for circulation types (lower panel).

Differences (tendencies) in air temperature between 1966–1985 and 2001–2020 for advective cyclonic circulation types.

Conditional probability of precipitation phases (Sd – solid; Mx – mixed; Lq – liquid) in the cold 1966–1985 and warm 2001–2020 periods averaged over stations for circulation types.

Spatial distribution of tendencies (differences between the 20-year periods) in the conditional probability of precipitation phases for cyclonic advective circulation types in DJF.

Spatial distribution of tendencies (differences between the 20-year periods) in the conditional probability of precipitation phases for cyclonic advective circulation types in MAM.

Spatial distribution of tendencies (differences between the 20-year periods) in the conditional probability of precipitation phases for cyclonic advective circulation types in SON.

Classification of circulation types_

Anticyclonic types	Cyclonic types	Direction of air advection
Na	Nc	Northern
NEa	NEc	Northeastern
Ea	Ec	Eastern
Sea	Sec	Southeastern
Sa	Sa	Southern
SWa	SWc	Southwestern
Wa	Wc	Western
NWa	NWc	Northwestern
Oa	Oc	Non-advective types

DOI: https://doi.org/10.14746/quageo-2024-0025 | Journal eISSN: 2081-6383 | Journal ISSN: 2082-2103

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Language: English

Page range: 47 - 64

Submitted on: Oct 20, 2023

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Published on: Aug 19, 2024

Published by: Adam Mickiewicz University

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

air temperature,

atmospheric circulation,

Related subjects:

© 2024 Ewa B. Łupikasza, Łukasz Małarzewski, Quoc B. Pham, published by Adam Mickiewicz University
This work is licensed under the Creative Commons Attribution 4.0 License.

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