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首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >Summer carbonate chemistry dynamics in the Southern Yellow Sea and the East China Sea: Regional variations and controls
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Summer carbonate chemistry dynamics in the Southern Yellow Sea and the East China Sea: Regional variations and controls

机译：南黄海和东海夏季碳酸盐化学动态：区域变化和控制

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摘要

Surface partial pressure of CO2 (pCO(2)) and pertinent parameters (i.e., pH, total alkalinity, dissolved oxygen, chlorophyll a) were investigated in the southern Yellow Sea (SYS) and the East China Sea (ECS) basing on two surveys conducted in June and August of 2013. The results suggested carbonate chemistry dynamics and related controlling factors were provided with significant temporal and spatial variations in different subregions of these two continental shelf seas. The western of SYS (SYSW) was CO2-undersaturated both in June and August, with the average FCO2 -1.88 mmol m(-2) d(-1) and -3.72 mmol m(-2) d(-1), respectively. The phytoplanlcton initiated CO2-absorption and the suspended sediment induced CO2-emission jointly controlled the air-sea CO2 exchange there. The center of SYS (SYSC) also behaved as an obvious CO2 sink (-1.57 mmol m(-2) d(-1) and -3.99 mmol m(-2) d(-1) in June and August, respectively), probably due to elevated TA/DIC ratio and the subsequent effects of spring bloom. As for the Yangtze River estuary (YRE), it changed from an obvious CO2 sink (-1.28 mmol m(-2) d(-1)) in June into a very weak CO2 source (0.04 mmol m(-2) d(-1)) in August. This change was probably associated with the rising of seawater temperature and monthly variation of Yangtze River discharge. The inner shelf of ECS (ECSS) experienced obvious air-sea CO2 flux changes during from June (- 8.88 mmol m(-2) d(-1)) to August (-036 mmol m(-2) d(-1)) as well. Biological DIC consumption in the upper layer and DIC regenerated from respiration in the subsurface jointly controlled this pCO(2) variation. As a whole, the SYS and ECS acted as an obvious CO2 sink during summer and could absorb atmospheric CO2 with the average air-sea flux (FCO2) -2.68 mmol m(-2) d(-1).
机译：基于两次调查，对黄海南部（SYS）和东海（ECS）的CO2表面分压（pCO（2））和相关参数（即pH，总碱度，溶解氧，叶绿素a）进行了调查。该研究于2013年6月和8月进行。结果表明，在这两个大陆架海的不同子区域中，碳酸盐化学动力学和相关控制因素具有明显的时空变化。 SYS（SYSW）的西部在6月和8月均被CO2饱和，平均FCO2分别为-1.88 mmol m（-2）d（-1）和-3.72 mmol m（-2）d（-1）。 。浮游植物引发了CO2的吸收，悬浮泥沙引起的CO2排放共同控制了那里的海-气CO2交换。 SYS（SYSC）的中心也表现为明显的CO2汇（分别在6月和8月为-1.57 mmol m（-2）d（-1）和-3.99 mmol m（-2）d（-1）），可能是由于TA / DIC比升高以及随后的春季开花所致。至于长江口（YRE），它从6月份的明显CO2汇（-1.28 mmol m（-2）d（-1））变为非常弱的CO2源（0.04 mmol m（-2）d（ -1））。这种变化可能与海水温度的升高和长江流量的月变化有关。 ECS（ECSS）的内层架在6月（-8.88 mmol m（-2）d（-1））至8月（-036 mmol m（-2）d（-1）期间经历了明显的海气CO2通量变化）。上层生物DIC消耗和从地下呼吸再生的DIC共同控制了该pCO（2）变化。总体而言，SYS和ECS在夏季期间是一个明显的CO2汇，并且可以吸收大气中的CO2，平均气海通量（FCO2）-2.68 mmol m（-2）d（-1）。

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