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The Interplay of Recent Vegetation and Sea Ice Dynamics—Results From a Regional Earth System Model Over the Arctic

Zhang, W. LU orcid ; Döscher, R. ; Koenigk, T. ; Miller, P. A. LU ; Jansson, C. ; Samuelsson, P. ; Wu, M. LU orcid and Smith, B. LU (2020) In Geophysical Research Letters 47(6).
Abstract

Recent accelerated warming over the Arctic coincides with sea ice reduction and shifting patterns of land cover. We use a state-of-the-art regional Earth system model, RCAO-GUESS, which comprises a dynamic vegetation model (LPJ-GUESS), a regional atmosphere model (RCA), and an ocean sea ice model (RCO), to explore the dynamic coupling between vegetation and sea ice during 1989–2011. Our results show that RCAO-GUESS captures recent trends in observed sea ice concentration and extent, with the inclusion of vegetation dynamics resulting in larger, more realistic variations in summer and autumn than the model that does not account for vegetation dynamics. Vegetation feedbacks induce concomitant changes in downwelling longwave radiation,... (More)

Recent accelerated warming over the Arctic coincides with sea ice reduction and shifting patterns of land cover. We use a state-of-the-art regional Earth system model, RCAO-GUESS, which comprises a dynamic vegetation model (LPJ-GUESS), a regional atmosphere model (RCA), and an ocean sea ice model (RCO), to explore the dynamic coupling between vegetation and sea ice during 1989–2011. Our results show that RCAO-GUESS captures recent trends in observed sea ice concentration and extent, with the inclusion of vegetation dynamics resulting in larger, more realistic variations in summer and autumn than the model that does not account for vegetation dynamics. Vegetation feedbacks induce concomitant changes in downwelling longwave radiation, near-surface temperature, mean sea level pressure, and sea ice reductions, suggesting a feedback chain linking vegetation change to sea ice dynamics. This study highlights the importance of including interactive vegetation dynamics in modeling the Arctic climate system, particularly when predicting sea ice dynamics.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arctic, Climatic warming, Coupled, Regional climate modelling, Sea ice, Vegetation feedback
in
Geophysical Research Letters
volume
47
issue
6
article number
e2019GL085982
publisher
American Geophysical Union (AGU)
external identifiers
  • scopus:85082515733
ISSN
0094-8276
DOI
10.1029/2019GL085982
language
English
LU publication?
yes
id
bc78a732-b9f3-4152-a991-051883b0f43d
date added to LUP
2020-04-17 17:13:45
date last changed
2022-04-18 21:40:32
@article{bc78a732-b9f3-4152-a991-051883b0f43d,
  abstract     = {{<p>Recent accelerated warming over the Arctic coincides with sea ice reduction and shifting patterns of land cover. We use a state-of-the-art regional Earth system model, RCAO-GUESS, which comprises a dynamic vegetation model (LPJ-GUESS), a regional atmosphere model (RCA), and an ocean sea ice model (RCO), to explore the dynamic coupling between vegetation and sea ice during 1989–2011. Our results show that RCAO-GUESS captures recent trends in observed sea ice concentration and extent, with the inclusion of vegetation dynamics resulting in larger, more realistic variations in summer and autumn than the model that does not account for vegetation dynamics. Vegetation feedbacks induce concomitant changes in downwelling longwave radiation, near-surface temperature, mean sea level pressure, and sea ice reductions, suggesting a feedback chain linking vegetation change to sea ice dynamics. This study highlights the importance of including interactive vegetation dynamics in modeling the Arctic climate system, particularly when predicting sea ice dynamics.</p>}},
  author       = {{Zhang, W. and Döscher, R. and Koenigk, T. and Miller, P. A. and Jansson, C. and Samuelsson, P. and Wu, M. and Smith, B.}},
  issn         = {{0094-8276}},
  keywords     = {{Arctic; Climatic warming; Coupled; Regional climate modelling; Sea ice; Vegetation feedback}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{6}},
  publisher    = {{American Geophysical Union (AGU)}},
  series       = {{Geophysical Research Letters}},
  title        = {{The Interplay of Recent Vegetation and Sea Ice Dynamics—Results From a Regional Earth System Model Over the Arctic}},
  url          = {{http://dx.doi.org/10.1029/2019GL085982}},
  doi          = {{10.1029/2019GL085982}},
  volume       = {{47}},
  year         = {{2020}},
}