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提出了一种以海表面温度为输入参数的海水温度分层模型。以2005—2012年的Argo气候态数据集与Argo浮标数据为基础,采用相对梯度法对海水温度垂向结构进行了分层,并据此获取了各层拟合方程所需的参数,包括:混合层深度、混合层梯度、温跃层上界深度、温跃层下界深度、深层大洋起始深度以及方程拟合系数。本文通过世界大洋数据库09版的CTD、XBT实测剖面数据对模型进行了检验。检验结果表明,该模型可以有效地对海水温度结构进行模拟,特别是400m以上的中上层大洋。模拟结果的总体均方根差(RMSE)为0.778℃,而在水深400m以上的中上层区域误差为0.494℃。
Abstract：A segment-based model for estimating the vertical profiles of temperature from the sea surface temperature has been developed.Using the Argo Climatology dataset(2005-2012)and the Argo float profiles,the vertical structure of the seawater temperature in the Northwestern Pacific Ocean was analyzed by the Relative Gradient method.The parameters of each layer were obtained including the mixed layer depth,temperature gradient in the mixed layer,upper thermocline depth,lower thermocline depth,deep ocean depth and coefficients for the fitting equations.The CTD,XBT data from World Ocean Database 09 were used for verifying the model.The results showed that this model performs well,especially in the upper ocean(<400 m).The estimated temperature had a root mean square error(RMSE)of 0.778℃in all the layers and 0.494℃in the upper 400 m.
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基本信息:
DOI：10.16441/j.cnki.hdxb.2014.09.003
中图分类号:P731.11
引用信息:
[1]赵宁,韩震,王嵩.一种基于相对梯度法的海水温度分层模型[J],2014,44(09):25-29+52.DOI:10.16441/j.cnki.hdxb.2014.09.003.
基金信息:
国家发改委卫星高技术产业化示范工程项目(2009214);; 海洋赤潮灾害立体监测技术与应用国家海洋局重点实验室重点项目(201401)资助