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东海区域热带气旋路径客观综合集成预报方法
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作者 刘迎 潘劲松 董加斌 《浙江气象》 1996年第3期19-22,共4页
本文介绍一种采用条件概率排序原则对预报因子进行重新分类,制作东海区域热带气旋路径客观综合集成预报的方法,试报表明集成方法具有较强的综合预报能力,预报距离误差明显低于参加集成的子方法。
关键词 热带气旋路径 子方法 集成预报 东海区域 权重系数 条件概率 综合集成方法 客观预报方法 预报误差 浙江省气象台
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黄海、东海区域漫衰减系数光谱遥感反演及激光测深性能评估 被引量:11
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作者 李凯 童晓冲 +2 位作者 张永生 哈长亮 申二华 《遥感学报》 EI CSCD 北大核心 2015年第5期761-769,共9页
本文在总结和比较中国现有黄海、东海海域漫衰减系数反演算法的基础上,利用水色测量数据分析得到漫衰减系数Kd(532)与Kd(490)之间的关系,为激光测深系统(以CZMIL为例)的性能评估提供了基础。利用MODIS二级数据产品评估了中国黄海、东海... 本文在总结和比较中国现有黄海、东海海域漫衰减系数反演算法的基础上,利用水色测量数据分析得到漫衰减系数Kd(532)与Kd(490)之间的关系,为激光测深系统(以CZMIL为例)的性能评估提供了基础。利用MODIS二级数据产品评估了中国黄海、东海海域在CZMIL海道测量模式下最大可测水深的空间分布。研究结果表明CZMIL在黄海、东海海域可测水深基本在0—50 m,该区域的面积占研究区域面积的比例为76.2%,为浅海海域开展激光测深作业提供了测深能力评估的依据和方法。 展开更多
关键词 黄海、东海区域 激光测深系统 CZMIL 漫衰减系数 经验反演模式
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全球垂向位移负荷潮模式在渤海、黄海、东海及周边区域的准确度评估
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作者 徐晓庆 魏泽勋 +3 位作者 滕飞 孙俊川 高秀敏 方国洪 《海洋学报》 CAS CSCD 北大核心 2022年第12期19-30,共12页
本研究利用渤海、黄海、东海及周边区域21个GPS站的调和常数资料,对5个全球垂向位移负荷潮模式(FES2014、EOT11a、GOT4.10c、GOT4.8和NAO.99b)在渤海、黄海、东海及周边区域的准确度进行了评估。结果表明,在渤海、黄海、东海及周边区域... 本研究利用渤海、黄海、东海及周边区域21个GPS站的调和常数资料,对5个全球垂向位移负荷潮模式(FES2014、EOT11a、GOT4.10c、GOT4.8和NAO.99b)在渤海、黄海、东海及周边区域的准确度进行了评估。结果表明,在渤海、黄海、东海及周边区域,对于M_(2)分潮,FES2014和EOT11a模式结果准确度相对较高;对于S_(2)分潮,NAO.99b和EOT11a模式结果准确度相对较高;对于K_(1)分潮,EOT11a和FES2014模式结果准确度相对较高;对于O_(1)分潮,EOT11a和GOT4.8模式结果准确度相对较高;对于N_(2)分潮,EOT11a和FES2014模式结果准确度相对较高;对于K_(2)分潮,NAO.99b和FES2014模式结果准确度相对较高;对于P_(1)分潮,EOT11a和GOT4.8模式结果准确度相对较高;对于Q_(1)分潮,FES2014和EOT11a模式结果准确度相对较高。除此之外,本文还简单分析了渤海、黄海、东海及周边区域8个主要分潮的垂向位移负荷潮分布特征。 展开更多
关键词 准确度评估 垂向位移负荷潮模式 渤海、黄海、东海及周边区域 GPS站
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东海沿岸省市鱼类水产品中全氟烷基化合物含量调查研究 被引量:6
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作者 叶洪丽 余玮玥 +6 位作者 史永富 孔聪 蔡友琼 于慧娟 王帅 刘云姣 黄冬梅 《中国渔业质量与标准》 2019年第4期13-21,共9页
全氟烷基化合物(perfluorinated alkylated substances, PFASs)因具有较高的稳定性、显著的生物富集效应及明显的生物毒性特点,已成为备受关注的持久性有机污染物之一。本研究采用高效液相串联质谱法调查分析了2015—2017年间中国东海区... 全氟烷基化合物(perfluorinated alkylated substances, PFASs)因具有较高的稳定性、显著的生物富集效应及明显的生物毒性特点,已成为备受关注的持久性有机污染物之一。本研究采用高效液相串联质谱法调查分析了2015—2017年间中国东海区域4个省市(江苏省、上海市、浙江省和福建省)的17个城市12种鱼类水产品519个样品中的19种PFASs的残留情况及分布规律,发现PFASs在大黄鱼( Larimichthys crocea )、鳊( Parabramis pekinensis )、带鱼( Trichiurus lepturus )、河鳗( Anguilla japonica )、鲫( Carassius auratus )和鳙( Aristichthys nobilis )等鱼类水产品中的检出率较高。19种PFASs中,全氟辛烷磺酸(perflurooctane sulfonates, PFOS)的检出率、含量均最高,分布最广。随着PFASs碳链长度的增加,其在生物体内的富集作用增强,长链全氟羧酸化合物在所采集的鱼类样品中均有检出,尤其是目鱼和鳙样品中。通过分析不同地域的PFASs平均检测含量,发现江苏省采集的鱼类样品中PFOS的平均检出含量最高,为0.88 μg/kg;浙江省采集的样品中PFASs的检出种类最多,达10种。采用人均日摄入量法(average daily intake, ADI)评估得到PFOS的风险值低于人均日耐受量(tolerable daily intake,TDI),结果表明,东海沿岸省市鱼类水产品中PFOS的潜在健康风险较低,暂时不会对人体造成即时危害。本研究对了解近3年东海沿岸省市鱼类水产品中PFASs的含量水平及安全性具有一定的参考价值,同时可为长期监测东海沿海省市水产品质量安全水平积累基础数据。 展开更多
关键词 全氟烷基化合物 东海区域 含量 风险评估 高效液相串联质谱法
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推算海洋大地水准面 被引量:1
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作者 陈子南 《地球信息科学学报》 CSCD 1997年第1期86-86,共1页
大地水准面是地球重力等势面,它反映地球形状及海面重力场异常特征,对大地测量学及海底探矿意义重大,利用Geosat高度计50个ERM周期共2.3a的数据,对包括东海区域的20°~40°N,120°~140°E海域进行了大地水准面反演计算。
关键词 海洋大地水准面 时变因素 重力场异常 大地测量学 反演计算 东海区域 地球形状 等势面 地球重力 时间平均
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中保产险浦东分公司再次中标承保平湖油气田
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作者 薛留根 《上海保险》 1996年第11期35-35,共1页
中保财产保险浦东分公司再次中标,为中国海洋石油公司承包的平湖油气田预钻井项目提供7500万美元的保险责任服务。承保协议10月17日签署。这是该公司继今年8月份成功地承保了平湖油气田,包括海上输油、输气管道、生产平台、生活平台等... 中保财产保险浦东分公司再次中标,为中国海洋石油公司承包的平湖油气田预钻井项目提供7500万美元的保险责任服务。承保协议10月17日签署。这是该公司继今年8月份成功地承保了平湖油气田,包括海上输油、输气管道、生产平台、生活平台等海上建筑工程2.7亿美元的财产保险之后又一个重大项目。 平湖油气田位于上海市东南约420公里的东海大陆架上,是东海区域油气开发的第一个气田,也是国家地矿部、中国海洋石油总公司及上海市政府联合开发的重大市政公用工程项目。预计在1999年初首先向上海浦东提供民用天然气。 展开更多
关键词 平湖油气田 财产保险 分公司 中国海洋石油总公司 输气管道 建筑工程 承保 民用天然气 生活平台 东海区域
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Impact of two typhoons on the marine environment in the Yellow Sea and East China Sea 被引量:5
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作者 付东洋 栾虹 +5 位作者 潘德炉 张莹 王立安 刘大召 丁又专 李薛 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2016年第4期871-884,共14页
This study investigated the ef fects of two typhoons(Nari and Wipha) on sea surface temperature(SST) and chlorophyll- a(Chl- a) concentration. Typhoons Nari and Wipha passed through the Yellow Sea on September 13, 200... This study investigated the ef fects of two typhoons(Nari and Wipha) on sea surface temperature(SST) and chlorophyll- a(Chl- a) concentration. Typhoons Nari and Wipha passed through the Yellow Sea on September 13, 2007 and the East China Sea(ECS) on September 16, 2007, respectively. The SST and Chl- a data were obtained from the Aqua/Terra MODIS and NOAA18, respectively, and the temperature and salinity in the southeast of the study area were observed in situ from Argo. The average SST within the study area dropped from 26.33°C on September 10 to a minimum of 22.79°C on September 16. Without the usual phenomenon of ‘right bias', the most striking response of SST was in the middle of the typhoons' tracks, near to coastal waters. Strong cooling of the upper layers of the water column was probably due to increased vertical mixing, discharge from the Changjiang River estuary, and heavy rainfall. During the typhoons, average Chl-a increased by 11.54% within the study area and by 21.69% in the off shore area near to the southeast ECS. From September 1 to 13, average Chl-a was only 0.10 mg/m^3 in the of fshore waters but it reached a peak of >0.17 mg/m^3 on September 18. This large increase in Chl-a concentration in of fshore waters might have been triggered by strong vertical mixing, upwelling induced by strong typhoons, and sedimentation and nutrient infl ux following heavy rainfall. 展开更多
关键词 typhoon Yellow Sea East China Sea chlorophyll-α concentration sea surface temperature
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Evaluation of regional energy security in eastern coastal China based on the DPSIR model 被引量:2
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作者 ZHANG Yan SHEN Lei 《Journal of Coal Science & Engineering(China)》 2012年第3期285-290,共6页
The DPSIR assessment method, which implies the relationships among driving force (D), pressure (P), status (S), impact (I), and response (R), is widely applied by scholars. This paper aims to establish a com... The DPSIR assessment method, which implies the relationships among driving force (D), pressure (P), status (S), impact (I), and response (R), is widely applied by scholars. This paper aims to establish a comprehensive assessment system for regional energy security in eastern coastal China based on the above model using different indicators. Factor analysis and the SPSS statistical analysis software were used to carry out scientific and quantitative assessments. The results indicated that con- tradictions of energy supply and demand as well as environmental pollution are the critical factors that present great challenges to regional energy security in this area. The authors argued that a sustainable, stable, and safe supply energy supply is crucial in solving the aforesaid dilemma, and improving the energy use efficiency is one of the best choices. Some countermeasures and suggestions regarding regional energy supply stability and utilization security were pointed out. 展开更多
关键词 DPSIR eastern coastal areas regional energy security assessment system
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Suspended sediment concentration mapping based on the MODIS satellite imagery in the East China inland, estuarine, and coastal waters 被引量:2
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作者 YANG Xianping SOKOLETSKY Leomd +1 位作者 WEI Xiaodao SHEN Fang 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2017年第1期39-60,共22页
The purpose of this research is to improve the retrieval accuracy for the suspended sediment concentration(SSC) from in situ and satellite remote sensing measurements in turbid East China estuarine and coastal waters.... The purpose of this research is to improve the retrieval accuracy for the suspended sediment concentration(SSC) from in situ and satellite remote sensing measurements in turbid East China estuarine and coastal waters. For this aim, three important tasks are formulated and solved: 1) an estimation of remote-sensing reflectance spectra R_(rs)(λ) after atmospheric correction; 2) an estimation of R_(rs)(λ) from the radiometric signals above the air-water surface; and 3) an estimation of SSC from R_(rs)(λ). Six different models for radiometric R_(rs)(λ) determination and 28 models for SSC versus R_(rs)(λ) are analyzed based on the field observations made in the Changjiang River estuary and its adjacent coastal area. The SSC images based on the above-mentioned analysis are generated for the area. 展开更多
关键词 ocean optics turbid estuarine and coastal waters remote-sensing reflectance suspended sediment concentration atmospheric correction
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Impact of Autumn SST in the Japan Sea on Winter Rainfall and Air Temperature in Northeast China 被引量:1
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作者 SHI Xiaomeng SUN Jilin +2 位作者 WU Dexing YI Li WEI Dongni 《Journal of Ocean University of China》 SCIE CAS 2015年第4期604-611,共8页
We studied the impact of sea surface temperature anomaly(SSTA) in the Japan Sea and the sea area east of Japan on the winter rainfall and air temperature in Northeast(NE) China using the singular value decomposition(S... We studied the impact of sea surface temperature anomaly(SSTA) in the Japan Sea and the sea area east of Japan on the winter rainfall and air temperature in Northeast(NE) China using the singular value decomposition(SVD) and empirical orthogonal function(EOF). The monthly-mean rainfall data observed at 160 stations in China, monthly-mean sea surface temperature(SST) of the Hadley Center for Climate Prediction and Research and monthly-mean air temperature from the NCEP reanalysis during 1960–2011 were used. Correlation analysis indicates that the SSTAs in the Japan Sea in September may last for three or four months and are an important index for forecasting the winter rainfall and air temperature in NE China. Positive SSTAs in the central Japan Sea and in the sea area east of Tokyo correspond to positive rainfall anomaly and negative air temperature anomaly in NE China. With the rise of SST in the Japan Sea, a weak cyclone appears over the Japan Sea. The northeasterly wind transports water vapor from the Okhotsk to NE China, resulting in more rainfall and lower air temperature. Negative SSTA years are accompanied by warmer air temperature and less snow in NE China. The 1000 h Pa geopotential height anomaly and wind anomaly fields are simulated by IAP-9L model, which supports the analysis results. 展开更多
关键词 Japan Sea SSTA Northeast China RAINFALL air temperature
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Regional Oceanic Impact on Circulation and Direct Radiative Effect of Aerosol over East Asia 被引量:1
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作者 XIONG Zhe HAN Zhi-Wei 《Atmospheric and Oceanic Science Letters》 2011年第6期324-329,共6页
The Regional Integrated Environmental Model System (RIEMS 2.0) coupled with a chemistry-aerosol model and the Princeton Ocean Model (POM) is employed to simulate regional oceanic impact on atmospheric circulation ... The Regional Integrated Environmental Model System (RIEMS 2.0) coupled with a chemistry-aerosol model and the Princeton Ocean Model (POM) is employed to simulate regional oceanic impact on atmospheric circulation and the direct radiative effect (DRE) of aerosol over East Asia. The aerosols considered in this study include both major anthropogenic aerosols (e.g., sulfate, black carbon, and organic carbon) and natural aerosols (e.g., soil dust and sea salt). The RIEMS 2.0 is driven by NCEP/NCAR reanalysis II, and the simulated period is from 1 January to 31 December 2006. The results show the following: (1) The simulated annual mean sea-level pressure by RIEMS 2.0 with POM is lower than without POM over the mainland and higher without POM over the ocean. (2) In summer, the subtropical high simulated by RIEMS 2.0 with POM is stronger and extends further westward, and the continental low is stronger than without POM in summer. (3) The aerosol optical depth (AOD) simulated by RIEMS 2.0 with POM is larger in the middle and lower reaches of the Yangtze River than without POM. (4) The direct radiative effect with POM is stronger than that without POM in the middle and lower reaches of the Yangtze River and parts of southern China. Therefore, the authors should take account of the impact of the regional ocean model on studying the direct climate effect &aerosols in long term simulation. 展开更多
关键词 aerosols direct radiative effect circulation regional ocean model the Regional Integrated Environ- mental Model System 2.0
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Impact of climatic change on sea surface temperature variation in Subei coastal waters,East China 被引量:2
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作者 王然 于非 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2014年第6期1406-1413,共8页
Sea surface temperature (SST) variation in the Subei coastal waters, East China, which is important for the ecological environment of the Yellow Sea where Enteromorphaprolifera blooms frequently, is affected by the ... Sea surface temperature (SST) variation in the Subei coastal waters, East China, which is important for the ecological environment of the Yellow Sea where Enteromorphaprolifera blooms frequently, is affected by the East Asian winter monsoon (EAWM), El Nifio-Southem Oscillation (ENSO), and Pacific Decadal Oscillation (PDO). In this study, correlations between climatic events and SST anomalies (SSTA) around the Subei (North Jiangsu Province, East China) Coast from 1981-2012 are analyzed, using empirical orthogonal function (EOF) and correlation analyses. First, a key region was determined by EOF analysis to represent the Subei coastal waters. Then, coherency analyses were performed on this key region. According to the correlation analysis, the EAWM index has a positive correlation with the spring and summer SSTA of the key region. Furthermore, the Nifio3.4 index is negatively correlated with the spring and summer SSTA of the key region 1 year ahead, and the PDO has significant negative coherency with spring SSTA and negative coherency with summer SSTA in the key region 1 year ahead. Overall, PDO exhibits the most significant impact on SSTA of the key region. In the key region, all these factors are correlated more significantly with SSTA in spring than in summer. This suggests that outbreaks ofEnteromorpha prolifera in the Yellow Sea are affected by global climatic changes, especially the PDO. 展开更多
关键词 sea surface temperature (SST) Pacific Decadal Oscillation (PDO) El Nifio-Southem Oscillation(ENSO) East Asian winter monsoon (EAWM) Subei coastal waters
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Surface thermal centroid anomaly of the eastern equatorial Pacific as a unified Nio index
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作者 方明强 陈艳 +1 位作者 李洪平 吴立新 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2013年第5期1129-1136,共8页
By analyzing the variability of global SST (sea surface temperature) anomalies, we propose a unified Nifio index using the surface thermal centroid anomaly of the region along the Pacific equator embraced by the 0.7... By analyzing the variability of global SST (sea surface temperature) anomalies, we propose a unified Nifio index using the surface thermal centroid anomaly of the region along the Pacific equator embraced by the 0.7~C contour line of the standard deviation of the SST anomalies and try to unify the traditional Nifio regions into a single entity. The unified Nifio region covers almost all of the traditional Nifio regions. The anomaly time series of the averaged SST over this region are closely correlated to historical Nifio indices. The anomaly time series of the zonal and meridional thermal centroid have close correlation with historical TNI (Trans-Nifio index) indices, showing differences among E1 Nifio (La Nifia) events. The meridional centroid anomaly suggests that areas of maximum temperature anomaly are moving meridionally (although slightly) with synchronous zonal movement. The zonal centroid anomalies of the unified Nifio region are found helpful in the classification of the Eastern Pacific (EP)/Central Pacific (CP) types of E1 Nifio events. More importantly, the zonal centroid anomaly shows that warm areas might move during a single warming/cooling phase. All the current Nifio indices can be well represented by a simple linear combination of unified Nifio indices, which suggests that the thermal anomaly (SSTA) and thermal centroid location anomaly of the unified Nifio region would yield a more complete image of each E1 Nifio/ La Nina event. 展开更多
关键词 E1 Nino La Nifia unified Nifio index thermal centroid
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