2017
Spatial and temporal variability of mean daily wind speeds in the Czech Republic, 1961-2015
BRÁZDIL, Rudolf, Pavel ZAHRADNÍČEK, Ladislava ŘEZNÍČKOVÁ, Radim TOLASZ, Petr ŠTĚPÁNEK et. al.Základní údaje
Originální název
Spatial and temporal variability of mean daily wind speeds in the Czech Republic, 1961-2015
Autoři
BRÁZDIL, Rudolf (203 Česká republika, garant, domácí), Pavel ZAHRADNÍČEK (203 Česká republika), Ladislava ŘEZNÍČKOVÁ (203 Česká republika, domácí), Radim TOLASZ (203 Česká republika), Petr ŠTĚPÁNEK (203 Česká republika) a Petr DOBROVOLNÝ (203 Česká republika, domácí)
Vydání
Climate Research, 2017, 0936-577X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10509 Meteorology and atmospheric sciences
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.859
Kód RIV
RIV/00216224:14310/17:00094795
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000406132100004
Klíčová slova anglicky
Mean daily wind speed; Spatial variability; Temporal variability; Wind stilling; Czech Republic
Změněno: 11. 4. 2018 22:46, Ing. Nicole Zrilić
Anotace
V originále
This contribution analyses the spatio-temporal variability of mean daily wind speeds (MDWSs) over the territory of the Czech Republic in the 1961-2015 period, using series from the 119 meteorological stations of the Czech Hydrometeorological Institute. These series were quality-controlled and homogenised by application of the standard normal homogeneity test, after Alexandersson, and the Maronna and Yohai test. The spatial variability of MDWSs is analysed in terms of annual and seasonal data, which exhibit a clear relationship to orographic character, with the highest values in highland and mountain areas. Spatial relationships between stations are interpreted by means of correlation graphs, which express the dependence of MDWSs on the altitude of the stations and the distance between them. Analysis of monthly, seasonal and annual linear trends for 4 altitudinal intervals and the entire Czech Republic shows a decreasing tendency, almost statistically significant. Taking the 119 stations individually, a certain proportion of stations also displays positive trends. Comparison of MDWS variability with circulation indices shows a closer relationship to the Central European Zonal Index than to the North Atlantic Oscillation Index. The results obtained are discussed with respect to problems associated with wind speed measurements, particularly the change from standard to automatic wind speed measurements, and a broadly occurring decline in measured wind speed series in recent decades ("wind stilling").
Návaznosti
GA15-11805S, projekt VaV |
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