Comparison of the Global Meridional Ekman Heat Flux Estimated from Four Wind Sources
Comparison of the Global Meridional Ekman Heat Flux Estimated from Four Wind Sources
复制标题
四种风源估算的全球经向艾克曼热通量的比较
DOI：
10.1175/jpo-2665.1
复制
发表时间：
2005
影响因子：
3.5
通讯作者：
P. Polito
中科院分区：
文献类型：
--
作者：
O. Sato;P. Polito
摘要研究了用四种不同来源的风资料估算的经向Ekman热通量的变异性。风矢量是从欧洲遥感(ERS)、快速散射仪(QuikScat)和特殊传感器微波成像仪(SSM/I)卫星仪器以及国家环境预测中心(NCEP)模式获得的。除QuikScat外，数据集的时间跨度为10年，时间跨度为1999至2003年。经纬向积分的Ekman热通量的年平均值的比较显示出一些差异。在比较这四个来源时，差异从热带地区向赤道增大。用ERS资料估算的经向Ekman热通量的年平均值始终较小。相关分析表明，ERS与其他来源的相关性在热带地区较好，相关系数在0.6~0.8之间，而在温带地区相关系数为0.4。SSM/I，NCEP，...
Abstract The variability in the meridional Ekman heat flux estimated using wind data from four different sources is examined. The wind vectors are obtained from the European Remote Sensing (ERS), Quick Scatterometer (Quikscat), and Special Sensor Microwave Imager (SSM/I) satellite instruments and from the National Centers for Environmental Prediction (NCEP) model. The datasets range over a period of 10 years except for the Quikscat, which spans the period between 1999 and 2003. The comparison of the annual mean of the zonally integrated Ekman heat flux shows some discrepancies. In comparing the four sources, the differences increase from the tropical regions toward the equator. The annual mean of the meridional Ekman heat flux is consistently smaller when estimated with the ERS data. The correlation analysis shows that ERS and the other sources have a better agreement in the tropical regions, with correlations between 0.6 and 0.8, while in the extratropical regions the correlation is 0.4. The SSM/I, NCEP,...