Modeling Pan-Arctic Peatland Carbon Dynamics Under Alternative Warming Scenarios
Chaudhary, Nitin LU
; Zhang, Wenxin
LU
; Lamba, Shubhangi
and Westermann, Sebastian
(2022)
In Geophysical Research Letters
49(10).
- Abstract
Peatlands store large amounts of carbon in terrestrial ecosystems and they are vulnerable to recent warming. The ongoing warming may change their carbon sink capacity and could reduce their potential to sequester carbon. In this study, we simulated peatland carbon dynamics in distinct future climate conditions using the peatland-vegetation model (LPJ-GUESS). The study examined whether less pronounced warming could further enhance the peatland carbon sink capacity and buffer the effects of climate change. It also determined which trajectory peatland carbon balance would follow, what the main drivers were, and which one would dominate in the future. We found that peatlands will largely retain their carbon sink capacity under the climate... (More)
Peatlands store large amounts of carbon in terrestrial ecosystems and they are vulnerable to recent warming. The ongoing warming may change their carbon sink capacity and could reduce their potential to sequester carbon. In this study, we simulated peatland carbon dynamics in distinct future climate conditions using the peatland-vegetation model (LPJ-GUESS). The study examined whether less pronounced warming could further enhance the peatland carbon sink capacity and buffer the effects of climate change. It also determined which trajectory peatland carbon balance would follow, what the main drivers were, and which one would dominate in the future. We found that peatlands will largely retain their carbon sink capacity under the climate scenario RCP2.6 to RCP6.0. They are projected to shift from a carbon sink to a carbon-neutral (5–10 gC m−2 yr−1) in RCP8.5. Higher respiration rates will dominate the net productivity in a warmer world leading to a reduction in carbon sink capacity.
(Less)
- author
- Chaudhary, Nitin
LU
; Zhang, Wenxin
LU
; Lamba, Shubhangi
and Westermann, Sebastian
- organization
- publishing date
- 2022-05-28
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- carbon accumulation, climate change, dynamic vegetation models, peatland, permafrost
- in
- Geophysical Research Letters
- volume
- 49
- issue
- 10
- article number
- e2021GL095276
- publisher
- American Geophysical Union (AGU)
- external identifiers
-
- scopus:85131324782
- ISSN
- 0094-8276
- DOI
- 10.1029/2021GL095276
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: Nitin Chaudhary acknowledges funding from the Swedish Research Council FORMAS grant (contract no. 2019‐01151), Nunataryuk (EU grant agreement no. 773421) and Crafoord grant (no. 20210996). LPJ‐GUESS simulations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at the Lund University Centre for Scientific and Technical Computing (Lunarc), project no. LU 2021/2‐61, 2022/2‐6 and Linköping University, project no. SNIC 2020/5‐563, 2021/6‐321, 2021/6‐6, and 2021/5‐514. Wenxin Zhang acknowledges the grants from Swedish Research Council FORMAS 2016‐01201 and Swedish National Space Agency 209/19. N.C. acknowledge support from the strategic research areas Modeling the Regional and Global Earth System (MERGE) and Biodiversity and Ecosystem Services in a Changing Climate (BECC) at Lund University. We acknowledge the World Climate Research Programme's Working Group on Coupled Modelling, which is responsible for CMIP, and we thank the climate modelling groups for producing and making available their model output. Publisher Copyright: © 2022. The Authors.
- id
- 60f80cbd-ba4e-4823-92e3-1165ee8eb73f
- date added to LUP
- 2022-09-06 15:15:19
- date last changed
- 2023-05-16 13:19:14
@article{60f80cbd-ba4e-4823-92e3-1165ee8eb73f,
abstract = {{<p>Peatlands store large amounts of carbon in terrestrial ecosystems and they are vulnerable to recent warming. The ongoing warming may change their carbon sink capacity and could reduce their potential to sequester carbon. In this study, we simulated peatland carbon dynamics in distinct future climate conditions using the peatland-vegetation model (LPJ-GUESS). The study examined whether less pronounced warming could further enhance the peatland carbon sink capacity and buffer the effects of climate change. It also determined which trajectory peatland carbon balance would follow, what the main drivers were, and which one would dominate in the future. We found that peatlands will largely retain their carbon sink capacity under the climate scenario RCP2.6 to RCP6.0. They are projected to shift from a carbon sink to a carbon-neutral (5–10 gC m<sup>−2</sup> yr<sup>−1</sup>) in RCP8.5. Higher respiration rates will dominate the net productivity in a warmer world leading to a reduction in carbon sink capacity.</p>}},
author = {{Chaudhary, Nitin and Zhang, Wenxin and Lamba, Shubhangi and Westermann, Sebastian}},
issn = {{0094-8276}},
keywords = {{carbon accumulation; climate change; dynamic vegetation models; peatland; permafrost}},
language = {{eng}},
month = {{05}},
number = {{10}},
publisher = {{American Geophysical Union (AGU)}},
series = {{Geophysical Research Letters}},
title = {{Modeling Pan-Arctic Peatland Carbon Dynamics Under Alternative Warming Scenarios}},
url = {{http://dx.doi.org/10.1029/2021GL095276}},
doi = {{10.1029/2021GL095276}},
volume = {{49}},
year = {{2022}},
}