Surface-Atmosphere Moisture Interactions in the Frozen Ground Regions of Eurasia.

ABSTRACT: Climate models simulate an intensifying Arctic hydrologic cycle in response to climatic warming, however the role of surface-atmosphere interactions from degrading frozen ground is unclear in these projections. Using Modern-Era Retrospective Analysis for Research and Applications (MERRA) data in high-latitude Eurasia, we examine long-term variability in surface-atmosphere coupling as represented by the statistical relationship between surface evaporative fraction (EF) and afternoon precipitation. Changes in EF, precipitation, and their statistical association are then related to underlying permafrost type and snow cover. Results indicate significant positive trends in July EF in the Central Siberian Plateau, corresponding to significant increases in afternoon precipitation. The positive tr

SUBMITTER: Ford TW 

PROVIDER: S-EPMC4726001 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature