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应用MODIS(Moderate Resolution Imaging Spectroradiometer)三级月平均遥感反演数据对2003年~2013年渤海表层叶绿素a浓度的空间、年际及季节分布特征与演变模式进行分析。结果表明:渤海表层水体叶绿素a浓度在靠近陆域的浅层水域浓度偏高,最高值分布于莱州湾、渤海湾、辽东湾等三个内湾水域;2003~2013年,除莱州湾外,渤海表层叶绿素a浓度呈逐年增加趋势;季节性变化方面,除渤海中部与渤海海峡,叶绿素a浓度每年有2次高峰期,峰值分别出现在早春与夏末,两次峰值间的夏季中期出现一次极低值,峰值出现时间依据地理位置不同有1个月左右时间差别。
The spatial, interannual and seasonal distributions and evolution patterns of chlorophyll a concentrations in the surface sea of Bohai Sea from 2003 to 2013 were analyzed using MODIS (Moderate Resolution Imaging Spectroradiometer) three-level monthly mean remote sensing inversion data. The results showed that the concentrations of chlorophyll a in surface waters of the Bohai Sea were high in the shallow waters close to the land areas, and the highest values were distributed in three inner waters of Laizhou Bay, Bohai Bay and Liaodong Bay. From 2003 to 2013, In the area of seasonal variation, except for the central Bohai Sea and the Bohai Strait, the chlorophyll-a concentration peaked twice a year and peaked at early spring and late summer, respectively. There was one pole in the middle of summer between the two peaks Low value, peak appearance time varies according to geographical location about 1 month time difference.