Abstract
<p>The aim of this study was to compare the climatic responses of three tree rings proxies: tree ring width (TRW),<br>maximum latewood density (MXD), and blue intensity (BI). For this study, 20 cores of Pinus sylvestris covering<br>the period 1886–2015 were extracted from living non-damaged trees from the Eastern Carpathian Mountains<br>(Romania). Each chronology was compared to monthly and daily climate data. All tree ring proxies had a<br>stronger correlation with the daily climate data compared to monthly data. The highest correlation coefficient<br>was obtained between the MXD chronology and daily maximum temperature over the period beginning with the<br>end of July and ending in the middle of September (r=0.64). The optimal intervals for the temperature signature<br>were 01 Aug – 24 Sept for the MXD chronology, 05 Aug – 25 Aug for the BI chronology, and both 16 Nov<br>of the previous year – 16 March of the current year and 15 Apr – 05 May for the TRW chronology. The results<br>from our study indicate that MXD can be used as a proxy indicator for summer maximum temperature, while<br>TRW can be used as a proxy indicator for just March maximum temperature. The weak and unstable relationship<br>between BI and maximum temperature indicates that BI is not a good proxy indicator for climate reconstructions<br>over the analysed region.</p>
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