Seasonal and interannual variability of sea surface chlorophyll a concentration in the Japan/East Sea (JES)
Seasonal and interannual variability of sea surface chlorophyll a concentration in the Japan/East Sea (JES)
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DOI：
10.1016/j.pocean.2004.06.001
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发表时间：
2004-05
影响因子：
4.1
通讯作者：
Keiko Yamada;J. Ishizaka;S. Yoo;Hyun‐cheol Kim;S. Chiba
中科院分区：
文献类型：
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作者：
Keiko Yamada;J. Ishizaka;S. Yoo;Hyun‐cheol Kim;S. Chiba
利用海洋彩色卫星遥感对日本/东海（JES）叶绿素a浓度的季节和年际变化进行了空间探测。春花的开始时间在空间上是不同的。春天的花期从3月的亚极锋向南开始，从4月的亚极锋向北开始，从沿海和北海道开始，从5月开始在日本海盆中部开始。春华开始的年际变化与该地区的风速相对应。1998年和2002年的春华比1997年、1999年和2001年的春华早了大约四周，与之对应的是可能导致温跃层提早形成的弱风。1999年和2001年，日本海盆和滨海地区的水华较晚，2000年南部地区的水华较晚。它与较强的风应力相对应，延迟了季节性温跃层的形成。1999年滨海海岸的水华出现较晚，与较强的风应力相对应，同时与马米亚海峡海冰融化的延迟有关。秋季开花出现在10月初至12月初，没有明显的时间过渡。叶绿素a浓度超过0.8 μg l−1的区域逐年在西部大于东部。秋季花的大小在不同年份之间有所不同，但与秋季平均风速没有相关性。这些结果表明，JES季节性水华的时间在很大程度上受全球气候变化（如ENSO事件）的影响。
Seasonal and interannual variability of chlorophyll a concentration in the Japan/East Sea (JES) was detected spatially by ocean color satellite remote sensing. Start timing of the spring bloom was different spatially. The spring bloom started at the subpolar front and southward of it in March, northward of subpolar front, along the Primorye coast and off Hokkaido in April and in the middle of the Japan Basin in May. The start of the spring bloom showed interannual variability that corresponded with the wind speed in the area. The spring bloom in 1998 and 2002 appeared about four weeks earlier than in 1997, 1999 and 2001, and it corresponded with weak winds that can lead to an early development of the thermocline. The bloom was late in 1999 and 2001 in the Japan Basin and along the Primorye coast, and in the southern area in 2000. It corresponded with stronger wind stress that delayed seasonal thermocline formation. The bloom along the Primorye coast appeared later in 1999, and it corresponded with stronger wind stress, and at the same time, it seemed to be related with the delay of melting of sea ice in Mamiya Strait. The fall bloom appeared from early October to early December, and it did not have a clear temporal transition. The area where chlorophyll a concentration exceeded 0.8 μg l−1was wider in the western area than in the eastern area every year. The magnitude of the fall bloom was different between years, but it did not show a correlation with average wind speed in fall. Those results indicated that the timing of the seasonal bloom in the JES is largely affected by the variability of global climate such as ENSO events.