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基于CCMP、ERA-Interim和NCEP-DOE三种全球风场产品,利用线性趋势检验和变异性系数分析了我国海表面风1985~2013年的风速变化情况。结果表明:不同风场产品所表征的海表面风变化趋势及区域变化强度存在差异。CCMP和NCEP-DOE均显示中国海表面年平均风速在呈显著性线性增强,增加速率分别为0.050 m/s·a和0.015 m/s·a,CCMP风速的快速增长可能隐含着资料同化背景场改变而引起的风速抬升因素,ERA-Interim并未显示出中国海表面风速在1985~2013年有明显的线性增强或减弱趋势。在黄渤海对中国海域海表面风增速贡献方面,NCEP-DOE与CCMP计算结果截然不同,CCMP显示黄渤海是中国四个区域海区中风速增加最强的区域,而NCEP-DOE显示该区风速增加最弱。
Based on the three global wind farms CCMP, ERA-Interim and NCEP-DOE, the wind speed variation of the sea surface wind in China from 1985 to 2013 was analyzed by the linear trend test and the coefficient of variation. The results show that there is a difference in the sea surface wind characteristics and the intensity of regional variation as characterized by different wind farm products. Both CCMP and NCEP-DOE show that the annual mean wind speed over China’s sea surface shows a significant linear increase at rates of 0.050 m / s · a and 0.015 m / s · a, respectively. The rapid growth of CCMP wind speed may imply data assimilation background ERA-Interim did not show a significant linear increase or decrease of the wind speed over the sea surface in China from 1985 to 2013 due to the wind speed rise caused by the field change. NCEP-DOE is quite different from CCMP in the contribution of the Yellow Sea and the Bohai Sea to the sea surface winds in the Chinese sea area. CCMP shows that the Huang-Bohai Sea is the strongest increase in the wind speed in the four sea areas of China, while NCEP-DOE shows the wind speed Increase the weakest.