Transient response of the MOC and climate to potential melting of the Greenland Ice Sheet in the 21st century

Aixue Hu, Gerald A. Meehl, Weiqing Han, Jianjun Yin

Research output: Contribution to journalArticle

77 Scopus citations

Abstract

[1] The potential effects of Greenland Ice Sheet (GrIS) melting on the Atlantic meridional overturning circulation (MOC) and global climate in the 21st century are assessed using the Community Climate System Model version 3 with prescribed rates of GrIS melting. Only when GrIS melting flux is strong enough to be able to produce net freshwater gain in upper subpolar North Atlantic does the MOC weaken further in the 21st century. Otherwise this additional melting flux does not alter the MOC much relative to the simulation without this added flux. The weakened MOC doesn't make the late 21st century global climate cooler than the late 20th century, but does reduce the magnitude of the warming in the northern high latitudes by a few degrees. Moreover, the additional dynamic sea level rise due to this weakened MOC could potentially aggravate the sea level problem near the northeast North America coast.

Original languageEnglish (US)
Pages (from-to)L10707
JournalGeophysical Research Letters
Volume36
Issue number10
DOIs
StatePublished - May 28 2009
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Transient response of the MOC and climate to potential melting of the Greenland Ice Sheet in the 21st century'. Together they form a unique fingerprint.

  • Cite this