The role of a changing Arctic Ocean and climate for the biogeochemical cycling of dimethyl sulphide and carbon monoxide.
The role of a changing Arctic Ocean and climate for the biogeochemical cycling of dimethyl sulphide and carbon monoxide.
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DOI：
10.1007/s13280-021-01612-z
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发表时间：
2022-03
期刊：
影响因子：
6.5
通讯作者：
Bange HW
中科院分区：
文献类型：
--
作者：
Campen HI;Arévalo-Martínez DL;Artioli Y;Brown IJ;Kitidis V;Lessin G;Rees AP;Bange HW
二甲基硫化物(DMS)和一氧化碳(CO)是与气候有关的痕量气体，在北极大气的辐射收支中发挥着关键作用。在全球变暖的情况下，北冰洋海冰以前所未有的速度消退，改变了光的穿透和生物群落，并可能影响北冰洋的DMS和CO循环。这可能在北极地区内外产生社会经济影响。然而，人们对该地区的CO生产途径和排放以及DMS和CO循环的未来发展知之甚少。在这里，我们总结了目前的理解，并评估了DMS和CO循环与海冰覆盖、光穿透、细菌和微藻群落、pH和物理性质的变化相关的未来潜在变化。我们认为，DMS和CO的产生可能会随着冰川融化、光能利用率的增加和浮游植物群落的转移而增加。除其他外，政策措施应促进大规模过程研究、协调长期观测和建模工作，以改善我们目前对北冰洋DMS和CO的循环和排放以及对全球后果的理解。
Dimethyl sulphide (DMS) and carbon monoxide (CO) are climate-relevant trace gases that play key roles in the radiative budget of the Arctic atmosphere. Under global warming, Arctic sea ice retreats at an unprecedented rate, altering light penetration and biological communities, and potentially affect DMS and CO cycling in the Arctic Ocean. This could have socio-economic implications in and beyond the Arctic region. However, little is known about CO production pathways and emissions in this region and the future development of DMS and CO cycling. Here we summarize the current understanding and assess potential future changes of DMS and CO cycling in relation to changes in sea ice coverage, light penetration, bacterial and microalgal communities, pH and physical properties. We suggest that production of DMS and CO might increase with ice melting, increasing light availability and shifting phytoplankton community. Among others, policy measures should facilitate large-scale process studies, coordinated long term observations and modelling efforts to improve our current understanding of the cycling and emissions of DMS and CO in the Arctic Ocean and of global consequences.
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