2018
May-July precipitation reconstruction from oak tree-rings for Bohemia (Czech Republic) since AD 1040
DOBROVOLNÝ, Petr, Michal RYBNICEK, Tomáš KOLAR, Rudolf BRÁZDIL, Miroslav TRNKA et. al.Základní údaje
Originální název
May-July precipitation reconstruction from oak tree-rings for Bohemia (Czech Republic) since AD 1040
Autoři
DOBROVOLNÝ, Petr (203 Česká republika, garant, domácí), Michal RYBNICEK (203 Česká republika), Tomáš KOLAR (203 Česká republika), Rudolf BRÁZDIL (203 Česká republika, domácí), Miroslav TRNKA (203 Česká republika) a Ulf BÜNTGEN (276 Německo, domácí)
Vydání
International Journal of Climatology, HOBOKEN, Wiley, 2018, 0899-8418
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10510 Climatic research
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.601
Kód RIV
RIV/00216224:14310/18:00100897
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000427011700022
Klíčová slova anglicky
precipitation; hydroclimate; oak TRW chronology; reconstruction; Bohemia; Czech Republic; last millennium
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 23. 4. 2024 11:14, Mgr. Michal Petr
Anotace
V originále
This contribution presents a near-millennium-long reconstruction of May-July (MJJ) precipitation for Bohemia, the western part of the recent Czech Republic. A well-replicated chronology of oak (Quercus spp.) tree-ring width (TRW) measurements covering the 1040-2013 period was employed as a high-resolution hydroclimatic proxy. Standardized TRW indices were calibrated to selected grid points from the CRU precipitation database, covering the geographical distribution of the oak data used. The oak TRW chronology explains 34% of MJJ precipitation variability during the 1901-1980 period used for calibration. Although the relationship between oak TRW and target data was relatively stable for this period, the coherence drops significantly beyond it. However, two independent verification periods reveal highly positive reduction of error (RE) and coefficient of efficiency (CE) statistics. Less formal verification based on direct comparison with 14 European proxy-based reconstructions further suggests relatively good agreement in the temporal occurrence of above/below mean late spring-early summer precipitation totals, especially in the 16th-17th centuries. The new MJJ precipitation reconstruction is restricted to inter-annual and inter-decadal variability, which is in line with our understanding of natural precipitation variability. Reconstruction reveals two long periods of low precipitation variability, in the 13th-14th centuries and 1630s-1850s. It also demonstrates that precipitation anomalies of larger amplitude and longer duration occurred in the earlier part of the last millennium than those found in the instrumental period. Negative trends in soil moisture content and gradual changes in annual precipitation distribution leading to higher extremity of precipitation regime may be responsible for the lower sensitivity of oaks to precipitation after the 1980s. The new reconstruction does not indicate any exceptional recent decline in MJJ precipitation.
Návaznosti
GA13-04291S, projekt VaV |
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GA17-10026S, projekt VaV |
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