Dependence of Present and Future European Temperature Extremes on the Location of Atmospheric Blocking.

ABSTRACT: The impact of atmospheric blocking on European heat waves (HWs) and cold spells (CSs) is investigated for present and future conditions . A 50-member ensemble of the second generation Canadian Earth System Model is used to quantify the role of internal variability in the response to blocking. We find that the present blocking-extreme temperature link is well represented compared to ERA-Interim, despite a significant underestimation of blocking frequency in most ensemble members. Our results show a strong correlation of blocking with northern European HWs in summer, spring, and fall. However, we also find a strong anticorrelation between blocking and HW occurrence in southern Europe in all seasons. Blocking increases the CS frequency particularly in southern Europe in fall, winter, and spri

SUBMITTER: Brunner L 

PROVIDER: S-EPMC6190735 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature