Documentary and instrumental-based drought indices for the Czech Lands back to AD 1501

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Publikace nespadá pod Filozofickou fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
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BRÁZDIL Rudolf DOBROVOLNÝ Petr TRNKA Miroslav BÜNTGEN Ulf ŘEZNÍČKOVÁ Ladislava KOTYZA Oldřich VALÁŠEK Hubert ŠTĚPÁNEK Petr

Rok publikování 2016
Druh Článek v odborném periodiku
Časopis / Zdroj Climate Research
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www http://www.int-res.com/abstracts/cr/v70/n2-3/p103-117/
Doi http://dx.doi.org/10.3354/cr01380
Obor Vědy o atmosféře, meteorologie
Klíčová slova documentary evidence; climate reconstruction; drought variability; extreme years; Central Europe
Popis This study addresses the reconstruction of 4 slightly different drought indices in the Czech Lands (now the Czech Republic) back to 1501 AD. Reconstructed monthly temperatures for Central Europe that are representative for the Czech territory, together with reconstructed seasonal precipitation totals from the same area, are used to calculate monthly, seasonal and annual drought indices (SPI, SPEI, Z-index, and scPDSI). The resulting time series reflect interannual to multi-decadal drought variability. The driest episodes cluster around the beginning and end of the 18th century, while 1540 emerges as a particularly dry extreme year. The temperature-driven dryness of the past 3 decades is well captured by SPEI, Z-index and scPDSI, whereas precipitation totals show no significant trend during this period (as reflected in SPI). Data and methodological uncertainty associated with Czech drought indices, as well as their position in a greater European context, are critically outlined. Comparison with fir tree-rings from southern Moravia and a spatial subset of the ‘Old World Drought Atlas’ (OWDA) reveals statistically significant correlation coefficients, of around 0.40 and 0.50, respectively. This study introduces a new documentary-based approach for the robust extension of standardised drought indices back into pre-instrumental times, which we also believe has great potential in other parts of the world where high-resolution paleoclimatic insight remains limited.
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