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Arctic greening can cause earlier seasonality of Arctic amplification
Author(s) -
Chae Yoojeong,
Kang Sarah M.,
Jeong SuJong,
Kim Baekmin,
Frierson Dargan M. W.
Publication year - 2015
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2014gl061841
Subject(s) - arctic , arctic vegetation , climatology , environmental science , vegetation (pathology) , boreal , albedo (alchemy) , climate change , seasonality , arctic geoengineering , latitude , global warming , tundra , atmospheric sciences , geography , oceanography , ecology , arctic ice pack , geology , biology , medicine , art , sea ice thickness , archaeology , geodesy , pathology , performance art , art history
As global temperatures rise, vegetation types will change, particularly in the northern high latitudes. Under a warming scenario, shrub and grasslands over the Arctic are expected to shift to boreal forests. This study compares the impact of such a change in Arctic vegetation type with that of CO 2 doubling on the seasonality of Arctic warming. Even though vegetation is changed throughout the year, the effect of the surface albedo change is maximum in boreal summer when the incoming solar radiation is largest. Evapotranspiration changes are also maximized in the summer, when the photosynthesis rate is highest. As a result, when Arctic vegetation change is considered in addition to doubled CO 2 , Arctic amplification is maximized earlier in the annual cycle.