Methyl iodide production in the ocean: Implications for climate change
Methyl iodide production in the ocean: Implications for climate change
复制标题
海洋中碘甲烷的产生：对气候变化的影响
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Ledicia B. Eiras Diaz
中科院分区：
文献类型：
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作者：
D. Smythe;S. Boswell;P. Breithaupt;R. Davidson;C. Dimmer;Ledicia B. Eiras Diaz
在大西洋和印度洋的低纬度水域发现，流入海洋边界层的碘化甲酯浓度高达45 pmol L - 1。这些高浓度与原绿球藻的丰度密切相关，我们已经在实验室培养实验中证实了该物种释放甲基碘。通过外推，我们估计从这一单一来源到海洋边界层的碘的全球海洋通量为5.3 × 1011 g I yr - 1，这是先前估计的全球总通量的很大一部分，其影响是深远的。气候预测模型显示，由于全球变暖，海面温度升高，生物地理种源发生变化。这样的变化很可能增加原绿球藻的丰度，我们估计同时向大气中释放的碘物质增加了约15%。这可能有助于减缓全球变暖。
Methyl iodide concentrations of up to 45 pmol L−1, which flux into the marine boundary layer, have been found in low latitude waters of the Atlantic and Indian oceans. These high concentrations correlate well with the abundance of Prochlorococcus, and we have confirmed the release of methyl iodide by this species in laboratory culture experiments. Extrapolating, we estimate the global ocean flux of iodine to the marine boundary layer from this single source to be 5.3 × 1011 g I yr−1, which is a large fraction of the previously estimated total global flux and the implications are far reaching. Climate prediction models suggest increases in sea surface temperature and changes in biogeographical provenances in response to global warming. Such changes are likely to increase the abundance of Prochlorococcus, and we estimate a concomitant ∼15% increase in the release of iodine species to the atmosphere. Potentially, this could help mitigate global warming.