Simulated Impact of Glacial Runoff on CO2 Uptake in the Gulf of Alaska
Simulated Impact of Glacial Runoff on CO2 Uptake in the Gulf of Alaska
复制标题
模拟冰川径流对阿拉斯加湾二氧化碳吸收的影响
DOI：
10.1002/2017gl075910
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发表时间：
2018
影响因子：
5.2
通讯作者：
W. Evans
中科院分区：
文献类型：
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作者：
D. Pilcher;S. Siedlecki;A. Hermann;K. Coyle;J. Mathis;W. Evans
阿拉斯加湾（果阿）接收大量的夏季淡水径流冰川融水。这种径流的碱度高度依赖于冰川源，可以改变沿海碳循环。我们使用一个区域海洋生物地球化学模型来模拟不同碱度负荷情景下果阿的CO2吸收。果阿被确定为目前的净碳汇，虽然低碱度的冰川径流抑制夏季沿海碳吸收。我们的模型表明，增加碱度产生的1.9-2.7 TgC/年的年CO2吸收量增加。这种转变与冰川径流组成的预计变化相当（即，由于持续的气候变暖，我们的研究结果表明，一个重要的本地碳-气候反馈可以通过增强海气交换显着增加沿海碳吸收，对世界各地冰川地区的沿海生态系统具有潜在影响。
The Gulf of Alaska (GOA) receives substantial summer freshwater runoff from glacial meltwater. The alkalinity of this runoff is highly dependent on the glacial source and can modify the coastal carbon cycle. We use a regional ocean biogeochemical model to simulate CO2 uptake in the GOA under different alkalinity‐loading scenarios. The GOA is identified as a current net sink of carbon, though low‐alkalinity tidewater glacial runoff suppresses summer coastal carbon uptake. Our model shows that increasing the alkalinity generates an increase in annual CO2 uptake of 1.9–2.7 TgC/yr. This transition is comparable to a projected change in glacial runoff composition (i.e., from tidewater to land‐terminating) due to continued climate warming. Our results demonstrate an important local carbon‐climate feedback that can significantly increase coastal carbon uptake via enhanced air‐sea exchange, with potential implications to the coastal ecosystems in glaciated areas around the world.
DOI：
10.1016/j.jmarsys.2008.03.011
发表时间：
2009-02
期刊：
Journal of marine systems : journal of the European Association of Marine Sciences and Techniques
影响因子：
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作者：
C. Stow;J. Jolliff;D. McGillicuddy;S. Doney;J. Icarus Allen;Marjorie A.M. Friedrichs;Kenneth A. Rose;P. Wallhead
通讯作者：
C. Stow;J. Jolliff;D. McGillicuddy;S. Doney;J. Icarus Allen;Marjorie A.M. Friedrichs;Kenneth A. Rose;P. Wallhead
对比年份冰川排水对北极潮水冰川峡湾CO2系统和海洋酸化状态的影响
影响因子：
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作者：
Agneta Fransson;Melissa Chierici ;Daiki Nomura ;Mats Granskog ;Svein Kristiansen ;Tõnu Martma;Gernot Nehrke
通讯作者：
Gernot Nehrke