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首页> 外文期刊>Chinese science bulletin >Dust storm in Asia continent and its bio-environmental effects in the North Pacific: A case study of the strongest dust event in April, 2001 in central Asia
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Dust storm in Asia continent and its bio-environmental effects in the North Pacific: A case study of the strongest dust event in April, 2001 in central Asia

机译：亚洲大陆的沙尘暴及其对北太平洋的生物环境影响：以2001年4月中亚最强沙尘事件为例

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Testing the effects of iron fertilization in booming metabolism of microbes in North Pacific Ocean has become an important hot topic in current global climate change study. The first supportive evidence with natural iron inputs to ocean was obtained by Bishop and his colleagues at the PAPA region in North Pacific Ocean. They found a rapid increase of marine phytoplankton over North Pacific Ocean after a strong dust storm in April 2001. We demonstrate that the dust deposition flux during this dust storm period decreases exponentially with increasing distance from the dust source regions along the dust transport pathway, through integration of synoptic dynamics, changes of TOMS-AI (aerosol index) and surface PM10 values along the dust pathway and changes of particulate organic carbon and chlorophyll in surface oceans. This strong dust storm may result in deposition of about 3.1 - 5.8 mu g/m~3 eolian iron into the PAPA region in North Pacific Ocean, thus causing a rapid increase of marine phytoplankton productivity observed by Bishop and his colleagues. This work supplies more direct and detailed evidence, from continental dust process, to support the iron hypothesis with natural iron inputs to the surface oceans through dust storms.
机译：在当前的全球气候变化研究中，测试铁肥对北太平洋微生物的新陈代谢的影响已成为一个重要的热点。 Bishop和他的同事在北太平洋的PAPA地区获得了第一个将天然铁投入海洋的支持性证据。他们发现，在2001年4月的一场沙尘暴之后，北太平洋的海洋浮游植物迅速增加。我们证明，在此沙尘暴期间，随着沿尘埃运输路径从尘埃源区域到尘埃的距离增加，尘埃沉积通量呈指数下降。天气动力学的整合，沿尘埃路径的TOMS-AI（气溶胶指数）和表面PM10值的变化以及海洋表面颗粒状有机碳和叶绿素的变化。这场强烈的沙尘暴可能导致大约3.1-5.8μg / m〜3的风成铁沉积到北太平洋的PAPA地区，从而导致Bishop及其同事观察到的海洋浮游植物生产力迅速提高。这项工作提供了来自大陆尘埃过程的更直接和详细的证据，以通过沙尘暴将天然铁输入到表层海洋来支持铁假说。

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