利用来自欧洲中期天气预报中心(European Centre for Medium-Range Weather Forecasts,ECMWF)将风浪、涌浪分离的具有较高时空分辨率的45年ERA-40海浪资料,对太平洋的海表风场、风浪、涌浪、混合浪的特征进行分析。研究发现太平洋大部...利用来自欧洲中期天气预报中心(European Centre for Medium-Range Weather Forecasts,ECMWF)将风浪、涌浪分离的具有较高时空分辨率的45年ERA-40海浪资料,对太平洋的海表风场、风浪、涌浪、混合浪的特征进行分析。研究发现太平洋大部分海域的涌浪波高、混合浪波高呈显著的逐年线性递增趋势,趋势分别为0.3—0.6cm.a 1、0.3—1.2cm.a 1;太平洋的涌浪在混合浪中四季皆起主导作用,涌浪指标的低值区主要集中在南北半球的西风带,太平洋赤道附近海域存在明显的涌浪池;北太平洋的风场与风浪场的相关系数好于南太平洋,风场与涌浪场的相关系数则是南太平洋好于北太平洋;研究还发现太平洋的浪场与Nino3指数有着密切的关系。展开更多
There exists a tongue-shaped swell-dominance pool known as Swell Pool（SP） in the Eastern Pacific region.The monthly-mean wave transports（WT） for each month of 2000 is computed using the wave products of ECMWF rean...There exists a tongue-shaped swell-dominance pool known as Swell Pool（SP） in the Eastern Pacific region.The monthly-mean wave transports（WT） for each month of 2000 is computed using the wave products of ECMWF reanalysis data.By comparing the 2000 monthly-mean WT and monthly-mean wind field from QUICKSCAT,large differences are found between the wave transport direction and the wind direction over the Eastern Pacific.This may serve as an evidence for the existence of the SP in this region.The work done in this study indicates that the sources of swell in the Tropical Eastern Pacific（TEP） are in the westerly regions of the Southern and Northern Pacific.展开更多
Based on the simulation with SWAN wave model and data of ERA-Interim from 1979 to 2016, how the waves propagate globally and why swell pools distribute in the eastern ocean were investigated in this study. The simulat...Based on the simulation with SWAN wave model and data of ERA-Interim from 1979 to 2016, how the waves propagate globally and why swell pools distribute in the eastern ocean were investigated in this study. The simulation results show that waves from North Pacific and North Atlantic mainly propagate southeastward or southward and swells generated in Southern Ocean spread northeastward. The waves from high latitude regions spread along the east coast and encounter in the tropical Pacific and Atlantic to form swell fronts around equator and then turn eastward. As the weak wind field with numerous swell inflows, swell pools are gener- ally located on the eastern side of the ocean basin, where the swell index S are greater than 0.9 calculated using ERA-20C data for the period of 1981 2010. Another remarkable feature is that swell pools move southward and split into two parts in winter, while they move northward and merge together in summer.展开更多
文摘利用来自欧洲中期天气预报中心(European Centre for Medium-Range Weather Forecasts,ECMWF)将风浪、涌浪分离的具有较高时空分辨率的45年ERA-40海浪资料,对太平洋的海表风场、风浪、涌浪、混合浪的特征进行分析。研究发现太平洋大部分海域的涌浪波高、混合浪波高呈显著的逐年线性递增趋势,趋势分别为0.3—0.6cm.a 1、0.3—1.2cm.a 1;太平洋的涌浪在混合浪中四季皆起主导作用,涌浪指标的低值区主要集中在南北半球的西风带,太平洋赤道附近海域存在明显的涌浪池;北太平洋的风场与风浪场的相关系数好于南太平洋,风场与涌浪场的相关系数则是南太平洋好于北太平洋;研究还发现太平洋的浪场与Nino3指数有着密切的关系。
基金The National Basic Research Programof China under contract Nos 2005CB422302,2005CB422307 and 2007CB411806the Nation-al Natural Science Foundation of China under contract No. 40490263
文摘There exists a tongue-shaped swell-dominance pool known as Swell Pool（SP） in the Eastern Pacific region.The monthly-mean wave transports（WT） for each month of 2000 is computed using the wave products of ECMWF reanalysis data.By comparing the 2000 monthly-mean WT and monthly-mean wind field from QUICKSCAT,large differences are found between the wave transport direction and the wind direction over the Eastern Pacific.This may serve as an evidence for the existence of the SP in this region.The work done in this study indicates that the sources of swell in the Tropical Eastern Pacific（TEP） are in the westerly regions of the Southern and Northern Pacific.
基金financially supported by the Public Science and Technology Research Funds Projects of Ocean (No. 201505007)the National Natural Science Foundation of China (NSFC) (No. 41276015)+2 种基金the Joint Project for the National Oceanographic Center by the NSFC and Shandong Government (No. U1406401)the Doctoral Fund of Ministry of Education of China (No. 20120132110004)the Hebei Agricultural University research project for talented scholars (No. YJ201835)
文摘Based on the simulation with SWAN wave model and data of ERA-Interim from 1979 to 2016, how the waves propagate globally and why swell pools distribute in the eastern ocean were investigated in this study. The simulation results show that waves from North Pacific and North Atlantic mainly propagate southeastward or southward and swells generated in Southern Ocean spread northeastward. The waves from high latitude regions spread along the east coast and encounter in the tropical Pacific and Atlantic to form swell fronts around equator and then turn eastward. As the weak wind field with numerous swell inflows, swell pools are gener- ally located on the eastern side of the ocean basin, where the swell index S are greater than 0.9 calculated using ERA-20C data for the period of 1981 2010. Another remarkable feature is that swell pools move southward and split into two parts in winter, while they move northward and merge together in summer.
