Spring arctic oscillation as a trigger of summer drought in Siberian subarctic over the past 1494 years.

ABSTRACT: Rapid changes in the hydrological and temperature regimes over the past decades at the northern latitudes enhance significantly permafrost degradation accelerating carbon release, increase the frequency of drought events and extensive wildfires. However, the mechanisms and dynamics driving drought events and their influence on Siberian forests are currently the subject of numerous research activities. Newly developed and annually resolved stable carbon and oxygen isotope chronologies of larch tree-ring cellulose (δ¹³C_cell and δ¹⁸O_cell) for the period 516-2009 CE allowed the reconstruction of July precipitation and Arctic Oscillation (AO) in May, respectively. Unprecedented drought events occurred towards twentieth-twenty-first centuries as indica

SUBMITTER: Churakova Sidorova OV 

PROVIDER: S-EPMC8463678 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature