DOI: 10.1002/2017MS001028
Scopus记录号: 2-s2.0-85029435342
论文题名: Modeling CO2 emissions from Arctic lakes: Model development and site-level study
作者: Tan Z ; , Zhuang Q ; , Shurpali N ; J ; , Marushchak M ; E ; , Biasi C ; , Eugster W ; , Walter Anthony K
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 5 起始页码: 2190
结束页码: 2213
语种: 英语
英文关键词: Biogeochemistry
; Biomineralization
; Carbon dioxide
; Glacial geology
; Organic carbon
; Permafrost
; Arctic lakes
; Carbon biogeochemistries
; CO2 fluxes
; Glacial lakes
; Laboratory experiments
; Relative contribution
; Terrestrial ecosystems
; Thermokarst lakes
; Lakes
; biogeochemistry
; biomineralization
; carbon dioxide
; carbon emission
; carbon flux
; glacial lake
; global perspective
; inorganic carbon
; karst hydrology
; lake water
; model
; organic carbon
; permafrost
; seasonal variation
; site investigation
; thawing
; thermokarst
; Arctic
英文摘要: Recent studies indicated that Arctic lakes play an important role in receiving, processing, and storing organic carbon exported from terrestrial ecosystems. To quantify the contribution of Arctic lakes to the global carbon cycle, we developed a one-dimensional process-based Arctic Lake Biogeochemistry Model (ALBM) that explicitly simulates the dynamics of organic and inorganic carbon in Arctic lakes. By realistically modeling water mixing, carbon biogeochemistry, and permafrost carbon loading, the model can reproduce the seasonal variability of CO2 fluxes from the study Arctic lakes. The simulated area-weighted CO2 fluxes from yedoma thermokarst lakes, nonyedoma thermokarst lakes, and glacial lakes are 29.5, 13.0, and 21.4 g C m−2 yr−1, respectively, close to the observed values (31.2, 17.2, and 16.5 ± 7.7 g C m−2 yr−1, respectively). The simulations show that the high CO2 fluxes from yedoma thermokarst lakes are stimulated by the biomineralization of mobilized labile organic carbon from thawing yedoma permafrost. The simulations also imply that the relative contribution of glacial lakes to the global carbon cycle could be the largest because of their much larger surface area and high biomineralization and carbon loading. According to the model, sunlight-induced organic carbon degradation is more important for shallow nonyedoma thermokarst lakes but its overall contribution to the global carbon cycle could be limited. Overall, the ALBM can simulate the whole-lake carbon balance of Arctic lakes, a difficult task for field and laboratory experiments and other biogeochemistry models. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75733
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, United States; Now at Pacific Northwest National Laboratory, Richland, WA, United States; Department of Agronomy, Purdue University, West Lafayette, IN, United States; Department of Environmental and Biological Science, University of Eastern Finland, Kuopio, Finland; Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland; Water and Environmental Research Center, University of Alaska Fairbanks, Fairbanks, AK, United States
Recommended Citation:
Tan Z,, Zhuang Q,, Shurpali N,et al. Modeling CO2 emissions from Arctic lakes: Model development and site-level study[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(5)