DOI: 10.1002/2012GB004491
Scopus记录号: 2-s2.0-84892819241
论文题名: Changes in the Arctic Ocean CO2 sink (1996-2007): A regional model analysis
作者: Manizza M ; , Follows M ; J ; , Dutkiewicz S ; , Menemenlis D ; , Hill C ; N ; , Key R ; M
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 4 起始页码: 1108
结束页码: 1118
语种: 英语
英文关键词: Arctic Ocean
; ocean productivity
; sea ice
Scopus关键词: Arctic ocean
; Arctic ocean sea ices
; Atmospheric reanalysis
; Atmospheric research
; Dissolved inorganic carbon
; Increasing sea-surface temperatures
; National centers for environmental predictions
; Sea surface temperature (SST)
; Atmospheric temperature
; Biology
; Oceanography
; Regional planning
; Sea ice
; Sun
; Water levels
; Carbon dioxide
; biogeochemical cycle
; biological pump
; carbon dioxide
; climate change
; data acquisition
; estimation method
; numerical model
; primary production
; sea ice
; sea surface temperature
; Arctic Ocean
英文摘要: The rapid recent decline of Arctic Ocean sea ice area increases the flux of solar radiation available for primary production and the area of open water for air-sea gas exchange. We use a regional physical-biogeochemical model of the Arctic Ocean, forced by the National Centers for Environmental Prediction/National Center for Atmospheric Research atmospheric reanalysis, to evaluate the mean present-day CO2 sink and its temporal evolution. During the 1996-2007 period, the model suggests that the Arctic average sea surface temperature warmed by 0.04°C a-1, that sea ice area decreased by ∼0.1 × 106 km2 a-1, and that the biological drawdown of dissolved inorganic carbon increased. The simulated 1996-2007 time-mean Arctic Ocean CO2 sink is 58 ± 6 Tg C a-1. The increase in ice-free ocean area and consequent carbon drawdown during this period enhances the CO2 sink by ∼1.4 Tg C a-1, consistent with estimates based on extrapolations of sparse data. A regional analysis suggests that during the 1996-2007 period, the shelf regions of the Laptev, East Siberian, Chukchi, and Beaufort Seas experienced an increase in the efficiency of their biological pump due to decreased sea ice area, especially during the 2004-2007 period, consistent with independently published estimates of primary production. In contrast, the CO2 sink in the Barents Sea is reduced during the 2004-2007 period due to a dominant control by warming and decreasing solubility. Thus, the effect of decreasing sea ice area and increasing sea surface temperature partially cancel, though the former is dominant. ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77558
Appears in Collections: 气候变化事实与影响
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作者单位: Program in Atmospheres, Oceans, and Climate, Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Geosciences Research Division, Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Dr., San Diego, CA 92093, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Program in Atmosphere and Ocean Sciences, Department of Geosciences, Princeton University, Princeton, NJ, United States
Recommended Citation:
Manizza M,, Follows M,J,et al. Changes in the Arctic Ocean CO2 sink (1996-2007): A regional model analysis[J]. Global Biogeochemical Cycles,2013-01-01,27(4)