The Contribution of Vegetation-Climate Feedback and Resultant Sea Ice Loss to Amplified Arctic Warming During the Mid-Holocene
(2022) In Geophysical Research Letters 49(18).- Abstract
Understanding influence of vegetation on past temperature changes in the Arctic region would help isolate uncertainty and build understanding of its broader climate system, with implications for paleoclimate reconstructions and future climate change. Using an Earth system model EC-Earth, we conduct a series of simulations to investigate the impact of vegetation-climate feedback on the Arctic climate during the mid-Holocene. Results show Arctic greening induced by the warming resulting from stronger orbital forcing, further amplifies the Arctic warming. The increased vegetation contributes 0.33°C of Arctic warming and 0.35 × 106 km2 of Arctic sea ice loss. Increased Arctic vegetation leads to reduced land surface... (More)
Understanding influence of vegetation on past temperature changes in the Arctic region would help isolate uncertainty and build understanding of its broader climate system, with implications for paleoclimate reconstructions and future climate change. Using an Earth system model EC-Earth, we conduct a series of simulations to investigate the impact of vegetation-climate feedback on the Arctic climate during the mid-Holocene. Results show Arctic greening induced by the warming resulting from stronger orbital forcing, further amplifies the Arctic warming. The increased vegetation contributes 0.33°C of Arctic warming and 0.35 × 106 km2 of Arctic sea ice loss. Increased Arctic vegetation leads to reduced land surface albedo and increased evapotranspiration, both of which cause local warming in spring and summer. The resultant sea ice loss causes warming in the following seasons, with atmospheric circulation anomalies further amplifying the warming. Our results highlight the significant contribution of vegetation-climate feedback to Arctic climate under natural conditions.
(Less)
- author
- Chen, Jie ; Zhang, Qiong ; Kjellström, Erik ; Lu, Zhengyao LU and Chen, Fahu
- organization
- publishing date
- 2022-09-28
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Arctic warming, mid-Holocene, sea ice, vegetation-climate feedback
- in
- Geophysical Research Letters
- volume
- 49
- issue
- 18
- article number
- e2022GL098816
- publisher
- American Geophysical Union (AGU)
- external identifiers
-
- scopus:85139095576
- ISSN
- 0094-8276
- DOI
- 10.1029/2022GL098816
- language
- English
- LU publication?
- yes
- id
- 77a5a144-49a7-4e29-a4ef-2b45bafff42a
- date added to LUP
- 2022-12-12 08:48:14
- date last changed
- 2022-12-12 08:49:45
@article{77a5a144-49a7-4e29-a4ef-2b45bafff42a, abstract = {{<p>Understanding influence of vegetation on past temperature changes in the Arctic region would help isolate uncertainty and build understanding of its broader climate system, with implications for paleoclimate reconstructions and future climate change. Using an Earth system model EC-Earth, we conduct a series of simulations to investigate the impact of vegetation-climate feedback on the Arctic climate during the mid-Holocene. Results show Arctic greening induced by the warming resulting from stronger orbital forcing, further amplifies the Arctic warming. The increased vegetation contributes 0.33°C of Arctic warming and 0.35 × 10<sup>6</sup> km<sup>2</sup> of Arctic sea ice loss. Increased Arctic vegetation leads to reduced land surface albedo and increased evapotranspiration, both of which cause local warming in spring and summer. The resultant sea ice loss causes warming in the following seasons, with atmospheric circulation anomalies further amplifying the warming. Our results highlight the significant contribution of vegetation-climate feedback to Arctic climate under natural conditions.</p>}}, author = {{Chen, Jie and Zhang, Qiong and Kjellström, Erik and Lu, Zhengyao and Chen, Fahu}}, issn = {{0094-8276}}, keywords = {{Arctic warming; mid-Holocene; sea ice; vegetation-climate feedback}}, language = {{eng}}, month = {{09}}, number = {{18}}, publisher = {{American Geophysical Union (AGU)}}, series = {{Geophysical Research Letters}}, title = {{The Contribution of Vegetation-Climate Feedback and Resultant Sea Ice Loss to Amplified Arctic Warming During the Mid-Holocene}}, url = {{http://dx.doi.org/10.1029/2022GL098816}}, doi = {{10.1029/2022GL098816}}, volume = {{49}}, year = {{2022}}, }