The wavenumber spectra of the chlorophyll “a” concentration (Chla) and the sea surface temperature (SST) were obtained from the data of the shipborne fluorometer and satellite measurements in the area of the anticyclonic eddy in the South China Sea in February—March 2004. In the southwestern part of the eddy, the slope of SST spectrum, received from the ship data was − 2.6 ± 0.1 at scales of 3–110 km. At the northeastern edge of the eddy, the slope of SST spectrum was − 1.7 ± 0.1 at the scales of 6–60 km. The slopes of Chla spectra were on average two times flatter than the slopes of the SST spectra, which was most likely due to the predominance of biological factors connected with winter phytoplankton bloom in SCS. The comparison with the spectra calculated from the Level 2 data of the Moderate Resolution Imaging Spectroradiometer (MODIS)/Terra and Sea-viewing Wide Field-of-view Sensor (SeaWiFS)/SeaStar showed that the slopes of SST spectra coincided within a narrow margin of errors, but the slopes of Chla spectra differed over two times. Possible reasons for these differences are discussed.

中文翻译：

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南海反气旋涡区叶绿素a浓度和海面温度波数谱

叶绿素“a”浓度（Chla）和海面温度（SST）波数谱由2004年2月—2004年3月南海反气旋涡流区船载荧光计和卫星测量数据获得. 在涡流的西南部，从船舶数据接收到的 SST 光谱斜率为 - 2.6 ± 0.1，范围为 3-110 公里。在涡流的东北边缘，SST 谱的斜率在 6-60 公里范围内为 - 1.7 ± 0.1。Chla 光谱的斜率平均是 SST 光谱斜率的两倍，这很可能是由于与 SCS 冬季浮游植物大量繁殖相关的生物因素占主导地位。与根据中分辨率成像光谱仪 (MODIS)/Terra 和海景宽视场传感器 (SeaWiFS)/SeaStar 的 2 级数据计算的光谱进行比较表明，SST 光谱的斜率在一个狭窄的范围内重合误差，但 Chla 光谱的斜率差异超过两次。讨论了这些差异的可能原因。