Decadal changes of the Western Arabian sea ecosystem

Decadal changes of the Western Arabian sea ecosystem
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西阿拉伯海生态系统的年代际变化

DOI:
10.1007/s40071-016-0124-3
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发表时间:
2016
影响因子:
1.3
通讯作者:
Piontkovski S
Piontkovski S
中科院分区:
--
文献类型:
--
作者:
Piontkovski S

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利用海洋学考察的历史数据和关于西阿拉伯海向外长波辐射、温度、风速和海洋颜色的遥感数据(1950-2010年),研究了上层300米的物理和生物化学特性的十年趋势。在29,043个垂直剖面中,72%来自美国和英国的考察。在年代际时间尺度上,长波辐射、地表气温和海表温度都在增加。这些都与风速降低相关的西伯利亚高大气异常减少。观察到oxycline和nitracline的变浅以及上部300 m的酸化。这些物理和化学的变化伴随着下降的叶绿素浓度,垂直大型底栖动物栖息地压缩,下降沙丁鱼上岸和增加鱼类死亡事件沿着阿曼海岸。
Historical data from oceanographic expeditions and remotely sensed data on outgoing longwave radiation, temperature, wind speed and ocean color in the western Arabian Sea (1950–2010) were used to investigate decadal trends in the physical and biochemical properties of the upper 300 m. 72 % of the 29,043 vertical profiles retrieved originated from USA and UK expeditions. Increasing outgoing longwave radiation, surface air temperatures and sea surface temperature were identified on decadal timescales. These were well correlated with decreasing wind speeds associated with a reduced Siberian High atmospheric anomaly. Shoaling of the oxycline and nitracline was observed as well as acidification of the upper 300 m. These physical and chemical changes were accompanied by declining chlorophyll-aconcentrations, vertical macrofaunal habitat compression, declining sardine landings and an increase of fish kill incidents along the Omani coast.
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发表时间: 2012-12
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