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首页> 外文期刊>Oceanographic Literature Review >Effects of Typhoons on Surface Seawater pCO_2 and Air-Sea CO_2 Fluxes in the Northern South China Sea
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Effects of Typhoons on Surface Seawater pCO_2 and Air-Sea CO_2 Fluxes in the Northern South China Sea

机译：南海北海地表海水PCO_2和空中海洋CO_2势态的影响

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摘要

This study assessed the effects of typhoons on sea surface pCO_2 and CO_2 flux in the northern South China Sea (SCS). During the passage of three major typhoons from May to August 2013, sea surface pCO_2, surface seawater temperature (SST), and other meteorological parameters were continuously measured on a moored buoy. Surface water in the region was a source of CO_2 to the atmosphere with large variations ranging from hours to months. SST was the primary factor controlling the variation of surface pCO_2 through most of the time period. Typhoons are seen to impact surface PCO_2 in three steps: first by cooling, thus decreasing surface PCO_2, and then by causing vertical mixing that brings up deep, high-CO_2 water, and lastly triggering net uptake of CO_2 due to the nutrients brought up in this deep water. The typhoons of this study primarily impacted air-sea CO_2 flux via increasing wind speeds. The mean CO_2 flux during a typhoon ranged from 3.6 to 5.4 times the pretyphoon mean flux. The magnitude of the CO_2 flux during typhoons was strongly inversely correlated with the typhoon center distance. The effect of typhoons accounted for 22% of the total CO_2 flux in the study period, during which typhoons occurred only 9% of the time. It was estimated that typhoons enhanced annual CO_2 efflux by 23-56% in the northern SCS during the last decade. As such, tropical cyclones may play a large and increasingly important role in controlling CO_2 fluxes in a warmer and stormier ocean of the future.
机译：本研究评估了台风对南海（SCS）海面PCO_2和CO_2通量的影响。在从5月到2013年5月到2013年8月的三个主要台风通过期间，在停泊的浮标上连续测量海面PCO_2，表面海水温度（SST）和其他气象参数。该地区的地表水是CO_2的源，大气的大气层从小时到数月范围。 SST是通过大部分时间段控制表面PCO_2的变化的主要因素。在三个步骤中观察到撞击表面PCO_2：首先通过冷却，从而降低表面PCO_2，然后通过引起垂直混合，从而引起深度，高CO_2水，并且由于所带来的营养素而最终引发CO_2的净摄取这个深水。本研究的台风主要通过增加风速来影响空中海洋CO_2通量。台风期间的平均CO_2通量范围为温室平均助焊剂的3.6至5.4倍。台风期间CO_2磁通量的大小与台风中心距离相反。台风的效果占研究期间总CO_2助焊剂的22％，在此期间台风仅发生9％的时间。据估计，在过去十年中，Typhoons在北部SCS中增强了23-56％的CO_2 Efflux。因此，热带气旋可能在控制未来的温暖和风暴海洋中的CO_2势倍方面发挥着巨大且越来越重要的作用。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2140-2141|共2页
  • 作者

    P. Yu; Z.A. Wang; J. Churchill;

  • 作者单位

    Department of Marine Chemistry and Geochemistry Woods Hole Oceanographic Institution Woods Hole MA United States;

    Department of Marine Chemistry and Geochemistry Woods Hole Oceanographic Institution Woods Hole MA United States;

    Department of Marine Chemistry and Geochemistry Woods Hole Oceanographic Institution Woods Hole MA United States;

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