Different climate response of three tree ring proxies of Pinus sylvestris from the Eastern Carpathians, Romania
Abstract
The aim of this study was to compare the climatic responses of three tree rings proxies: tree ring width (TRW),maximum latewood density (MXD), and blue intensity (BI). For this study, 20 cores of Pinus sylvestris coveringthe period 1886-2015 were extracted from living non-damaged trees from the Eastern Carpathian Mountains(Romania). Each chronology was compared to monthly and daily climate data. All tree ring proxies had astronger correlation with the daily climate data compared to monthly data. The highest correlation coefficientwas obtained between the MXD chronology and daily maximum temperature over the period beginning with theend of July and ending in the middle of September (r=0.64). The optimal intervals for the temperature signaturewere 01 Aug - 24 Sept for the MXD chronology, 05 Aug - 25 Aug for the BI chronology, and both 16 Novof the previous year - 16 March of the current year and 15 Apr - 05 May for the TRW chronology. The resultsfrom our study indicate that MXD can be used as a proxy indicator for summer maximum temperature, whileTRW can be used as a proxy indicator for just March maximum temperature. The weak and unstable relationshipbetween BI and maximum temperature indicates that BI is not a good proxy indicator for climate reconstructionsover the analysed region.
- Publication:
-
EGU General Assembly Conference Abstracts
- Pub Date:
- May 2020
- DOI:
- 10.5194/egusphere-egu2020-20524
- Bibcode:
- 2020EGUGA..2220524N