Effect of glacial drainage water on the CO2 system and ocean acidification state in an Arctic tidewater‐glacier fjord during two contrasting years
Effect of glacial drainage water on the CO2 system and ocean acidification state in an Arctic tidewater‐glacier fjord during two contrasting years
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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
DOI:
10.1002/2014jc010320
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发表时间:
2015
影响因子:
--
通讯作者:
Gernot Nehrke
中科院分区:
文献类型:
--
作者:
Agneta Fransson;Melissa Chierici ;Daiki Nomura ;Mats Granskog ;Svein Kristiansen ;Tõnu Martma;Gernot Nehrke
In order to investigate the effect of glacial water on the CO2system in the fjord, we studied the variability of the total alkalinity (AT), total dissolved inorganic carbon (CT), dissolved inorganic nutrients, oxygen isotopic ratio (δ18O), and freshwater fractions from the glacier front to the outer Tempelfjorden on Spitsbergen in winter 2012 (January, March, and April) and 2013 (April) and summer/fall 2013 (September). The two contrasting years clearly showed that the influence of freshwater, mixing, and haline convection affected the chemical and physical characteristics of the fjord. The seasonal variability showed the lowest calcium carbonate saturation state (Ω) and pH values in March 2012 coinciding with the highest freshwater fractions. The highest Ω and pH were found in September 2013, mostly due to CO2uptake during primary production. Overall, we found that increased freshwater supply decreased Ω, pH, and AT. On the other hand, we observed higher ATrelative to salinity in the freshwater end‐member in the mild and rainy winter of 2012 (1142 μmol kg−1) compared to ATin 2013 (526 μmol kg−1). Observations of calcite and dolomite crystals in the glacial ice suggested supply of carbonate‐rich glacial drainage water to the fjord. This implies that winters with a large amount of glacial drainage water partly provide a lessening of further ocean acidification, which will also affect the air‐sea CO2exchange.
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影响因子:
2.3
作者:
F. Nilsen;F. Cottier;R. Skogseth;S. Mattsson
通讯作者:
F. Nilsen;F. Cottier;R. Skogseth;S. Mattsson
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
R. Skogseth;I. Fer;P. Haugan
通讯作者:
P. Haugan
影响因子:
3.6
作者:
Fransson, Agneta;Chierici, Melissa;Papakyriakou, Tim N.
通讯作者:
Papakyriakou, Tim N.
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
M. Forwick;T. Vorren;M. Hald;S. Korsun;Y. Roh;C. Vogt;K. Yoo
通讯作者:
K. Yoo
影响因子:
56.9
作者:
S. Apollonio
通讯作者:
S. Apollonio