El Nio Modoki,similar to but different from canonical El Nio,has been observed since the late1970s.In this paper,using HadISST and NCEP/NCAR wind data,we analyze the relationship between El Nio Modoki and Sea Su...El Nio Modoki,similar to but different from canonical El Nio,has been observed since the late1970s.In this paper,using HadISST and NCEP/NCAR wind data,we analyze the relationship between El Nio Modoki and Sea Surface Temperature(SST)in the offshore area of China and its adjacent waters for different seasons.Our results show a significant negative correlation between El Nio Modoki in summer and SST in autumn in the offshore area of China and its adjacent waters,particularly for regions located in the east of the Kuroshio.It is also found that during El Nio Modoki period,anomalous northerlies prevail over the regions from the northern part of the Philippines to the offshore area of China,indicating that the northerlies are unfavorable for the transport of warm water from the western tropical Pacific to the mid-latitude area.Consequently,El Nio Modoki in summer may play a substantial role in cold SST anomalies in the offshore area of China and its adjacent waters in autumn through the influence of the Kuroshio,with a lagged response of the ocean to the atmospheric wind field.展开更多
风能潜力评估是风电场选址工作的基础。本文基于欧洲中期天气预报中心的ERA5再分析数据,采用风功率密度(Wind Power Density,WPD)中值、容量系数(Capacity Factor,CF)以及鲁棒性变异系数(Robust Coefficient of Variation,RCoV)三种指标...风能潜力评估是风电场选址工作的基础。本文基于欧洲中期天气预报中心的ERA5再分析数据,采用风功率密度(Wind Power Density,WPD)中值、容量系数(Capacity Factor,CF)以及鲁棒性变异系数(Robust Coefficient of Variation,RCoV)三种指标,对中国近海浅水区域的风能潜力进行评估。研究结果表明:(1)台湾海峡和东海南部风能资源最为丰富并且风能利用率最高,风功率密度中值和容量系数分别为400-900 W/m^(2)和0.45~0.7。总体来看,风功率密度中值从渤海到台湾海峡呈逐渐增加的趋势,从台湾海峡到琼州湾呈逐渐减小的趋势,容量系数大小分布情况相似。(2)鲁棒性变异系数大小无明显分布规律,广东湛江近岸海域鲁棒性变异系数在0.70~0.75之间,风能发电量最为稳定,但该地区的风能资源丰富程度较低。(3)福州近岸海域不仅有丰富的风能资源和风能利用率,且发电量较为稳定,在不考虑其他因素的影响下,是中国近海浅水区域建设海上风电场的最佳地点。展开更多
基金Special Scientific Research Project for Public Welfare(201006021,201005019)Youth Foundation of Chinese State Oceanic Administration(2013257)+2 种基金Scientific Research Foundation of Third Institute of Oceanography,SOA(TIO2013002TIO2013003)National Special Project:Chinese Offshore Investigation and Assessment(908-02-01-02)
文摘El Nio Modoki,similar to but different from canonical El Nio,has been observed since the late1970s.In this paper,using HadISST and NCEP/NCAR wind data,we analyze the relationship between El Nio Modoki and Sea Surface Temperature(SST)in the offshore area of China and its adjacent waters for different seasons.Our results show a significant negative correlation between El Nio Modoki in summer and SST in autumn in the offshore area of China and its adjacent waters,particularly for regions located in the east of the Kuroshio.It is also found that during El Nio Modoki period,anomalous northerlies prevail over the regions from the northern part of the Philippines to the offshore area of China,indicating that the northerlies are unfavorable for the transport of warm water from the western tropical Pacific to the mid-latitude area.Consequently,El Nio Modoki in summer may play a substantial role in cold SST anomalies in the offshore area of China and its adjacent waters in autumn through the influence of the Kuroshio,with a lagged response of the ocean to the atmospheric wind field.
文摘风能潜力评估是风电场选址工作的基础。本文基于欧洲中期天气预报中心的ERA5再分析数据,采用风功率密度(Wind Power Density,WPD)中值、容量系数(Capacity Factor,CF)以及鲁棒性变异系数(Robust Coefficient of Variation,RCoV)三种指标,对中国近海浅水区域的风能潜力进行评估。研究结果表明:(1)台湾海峡和东海南部风能资源最为丰富并且风能利用率最高,风功率密度中值和容量系数分别为400-900 W/m^(2)和0.45~0.7。总体来看,风功率密度中值从渤海到台湾海峡呈逐渐增加的趋势,从台湾海峡到琼州湾呈逐渐减小的趋势,容量系数大小分布情况相似。(2)鲁棒性变异系数大小无明显分布规律,广东湛江近岸海域鲁棒性变异系数在0.70~0.75之间,风能发电量最为稳定,但该地区的风能资源丰富程度较低。(3)福州近岸海域不仅有丰富的风能资源和风能利用率,且发电量较为稳定,在不考虑其他因素的影响下,是中国近海浅水区域建设海上风电场的最佳地点。
