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Intensified Arctic warming under greenhouse warming by vegetation–atmosphere–sea ice interaction

Jeong, Jee-Hoon; Kug, Jong-Seong; Linderholm, Hans; Chen, Deliang; Kim, Baek-Min and Jun, Sang-Yoon (2014) In Environmental Research Letters 9.
Abstract
Observations and modeling studies indicate that enhanced vegetation activities over highlatitudes under an elevated CO2 concentration accelerate surface warming by reducing thesurface albedo. In this study, we suggest that vegetation-atmosphere-sea ice interactions overhigh latitudes can induce an additional amplification of Arctic warming. Our hypothesis is testedby a series of coupled vegetation-climate model simulations under 2xCO2 environments. Theincreased vegetation activities over high latitudes under a 2xCO2 condition induce additionalsurface warming and turbulent heat fluxes to the atmosphere, which are transported to the Arcticthrough the atmosphere. This causes additional sea-ice melting and upper-ocean warming duringthe warm... (More)
Observations and modeling studies indicate that enhanced vegetation activities over highlatitudes under an elevated CO2 concentration accelerate surface warming by reducing thesurface albedo. In this study, we suggest that vegetation-atmosphere-sea ice interactions overhigh latitudes can induce an additional amplification of Arctic warming. Our hypothesis is testedby a series of coupled vegetation-climate model simulations under 2xCO2 environments. Theincreased vegetation activities over high latitudes under a 2xCO2 condition induce additionalsurface warming and turbulent heat fluxes to the atmosphere, which are transported to the Arcticthrough the atmosphere. This causes additional sea-ice melting and upper-ocean warming duringthe warm season. As a consequence, the Arctic and high-latitude warming is greatly amplified inthe following winter and spring, which further promotes vegetation activities the following year.We conclude that the vegetation-atmosphere-sea ice interaction gives rise to additional positivefeedback of the Arctic amplification. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
climate fee, sea ice, global climate model, vegetation feedback, Arctic warming
in
Environmental Research Letters
volume
9
publisher
IOP Publishing
external identifiers
  • Scopus:84907700239
ISSN
1748-9326
DOI
10.1088/1748-9326/9/9/094007
project
MERGE
language
English
LU publication?
no
id
68bac512-b2e0-407e-8315-ea892e565030 (old id 7515549)
date added to LUP
2015-07-08 14:44:22
date last changed
2016-10-13 04:33:01
@misc{68bac512-b2e0-407e-8315-ea892e565030,
  abstract     = {Observations and modeling studies indicate that enhanced vegetation activities over highlatitudes under an elevated CO2 concentration accelerate surface warming by reducing thesurface albedo. In this study, we suggest that vegetation-atmosphere-sea ice interactions overhigh latitudes can induce an additional amplification of Arctic warming. Our hypothesis is testedby a series of coupled vegetation-climate model simulations under 2xCO2 environments. Theincreased vegetation activities over high latitudes under a 2xCO2 condition induce additionalsurface warming and turbulent heat fluxes to the atmosphere, which are transported to the Arcticthrough the atmosphere. This causes additional sea-ice melting and upper-ocean warming duringthe warm season. As a consequence, the Arctic and high-latitude warming is greatly amplified inthe following winter and spring, which further promotes vegetation activities the following year.We conclude that the vegetation-atmosphere-sea ice interaction gives rise to additional positivefeedback of the Arctic amplification.},
  author       = {Jeong, Jee-Hoon and Kug, Jong-Seong and Linderholm, Hans and Chen, Deliang and Kim, Baek-Min and Jun, Sang-Yoon},
  issn         = {1748-9326},
  keyword      = {climate fee,sea ice,global climate model,vegetation feedback,Arctic warming},
  language     = {eng},
  publisher    = {ARRAY(0x98df650)},
  series       = {Environmental Research Letters},
  title        = {Intensified Arctic warming under greenhouse warming by vegetation–atmosphere–sea ice interaction},
  url          = {http://dx.doi.org/10.1088/1748-9326/9/9/094007},
  volume       = {9},
  year         = {2014},
}