Blue intensity and density from Northern Fennoscandian tree rings, exploring the potential to improve summer temperature reconstructions with earlywood information
Here we explore two new tree-ring parameters, derivedfrom measurements of wood density and blue intensity(BI). The new proxies show an increase in the interannualsummer temperature signal compared to establishedproxies, and present the potential to improve long-term performance.At high latitudes, where tree growth is mainlylimited by low temperatures, radiodensitometric measurementsof wood density
