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Greening in the circumpolar high-latitude may amplify warming in the growing season

Jeong, Jee-Hoon; Kug, J.-S.; Kim, B.-M.; Min, S.-K.; Linderholm, Hans; Ho, C.-H.; Rayner, D.P.; Chen, Deliang and Jun, S.-Y. (2012) In Climate Dynamics 38(7-8). p.1421-1431
Abstract
We present a study that suggests greening in the circumpolar high-latitude regions amplifies surface warming in the growing season (May-September) under enhanced greenhouse conditions. The investigation used a series of climate simulations with the Community Atmospheric Model version 3-which incorporates a coupled, dynamic global vegetation model-with and without vegetation feedback, under both present and doubled CO2 concentrations. Results indicate that climate warming and associated changes promote circumpolar greening with northward expansion and enhanced greenness of both the Arctic tundra and boreal forest regions. This leads to additional surface warming in the high-latitudes in the growing season, primarily through more absorption... (More)
We present a study that suggests greening in the circumpolar high-latitude regions amplifies surface warming in the growing season (May-September) under enhanced greenhouse conditions. The investigation used a series of climate simulations with the Community Atmospheric Model version 3-which incorporates a coupled, dynamic global vegetation model-with and without vegetation feedback, under both present and doubled CO2 concentrations. Results indicate that climate warming and associated changes promote circumpolar greening with northward expansion and enhanced greenness of both the Arctic tundra and boreal forest regions. This leads to additional surface warming in the high-latitudes in the growing season, primarily through more absorption of incoming solar radiation. The resulting surface and tropospheric warming in the high-latitude and Arctic regions weakens prevailing tropospheric westerlies over 45-70N, leading to the formation of anticyclonic pressure anomalies in the Arctic regions. These pressure anomalies resemble the anomalous circulation pattern during the negative phase of winter Arctic Oscillation. It is suggested that these circulation anomalies reinforce the high-latitude and Arctic warming in the growing season. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Vegetation, Arctic warming, Arctic greening, Climate model, Future climate, Atmospheric circulation, Surface energy budget
in
Climate Dynamics
volume
38
issue
7-8
pages
1421 - 1431
publisher
Springer
external identifiers
  • scopus:84859002194
ISSN
1432-0894
DOI
10.1007/s00382-011-1142-x
project
BECC
language
English
LU publication?
no
id
5faf00ce-1813-46ab-9e04-b9da2a8576cc (old id 4448499)
date added to LUP
2014-05-23 12:11:11
date last changed
2017-09-24 03:17:27
@article{5faf00ce-1813-46ab-9e04-b9da2a8576cc,
  abstract     = {We present a study that suggests greening in the circumpolar high-latitude regions amplifies surface warming in the growing season (May-September) under enhanced greenhouse conditions. The investigation used a series of climate simulations with the Community Atmospheric Model version 3-which incorporates a coupled, dynamic global vegetation model-with and without vegetation feedback, under both present and doubled CO2 concentrations. Results indicate that climate warming and associated changes promote circumpolar greening with northward expansion and enhanced greenness of both the Arctic tundra and boreal forest regions. This leads to additional surface warming in the high-latitudes in the growing season, primarily through more absorption of incoming solar radiation. The resulting surface and tropospheric warming in the high-latitude and Arctic regions weakens prevailing tropospheric westerlies over 45-70N, leading to the formation of anticyclonic pressure anomalies in the Arctic regions. These pressure anomalies resemble the anomalous circulation pattern during the negative phase of winter Arctic Oscillation. It is suggested that these circulation anomalies reinforce the high-latitude and Arctic warming in the growing season.},
  author       = {Jeong, Jee-Hoon and Kug, J.-S. and Kim, B.-M. and Min, S.-K. and Linderholm, Hans and Ho, C.-H. and Rayner, D.P. and Chen, Deliang and Jun, S.-Y.},
  issn         = {1432-0894},
  keyword      = {Vegetation,Arctic warming,Arctic greening,Climate model,Future climate,Atmospheric circulation,Surface energy budget},
  language     = {eng},
  number       = {7-8},
  pages        = {1421--1431},
  publisher    = {Springer},
  series       = {Climate Dynamics},
  title        = {Greening in the circumpolar high-latitude may amplify warming in the growing season},
  url          = {http://dx.doi.org/10.1007/s00382-011-1142-x},
  volume       = {38},
  year         = {2012},
}