The climatology and interannual variability of sea surface salinity （SSS） and freshwater flux （FWF） in the equatorial Pacific are analyzed and evaluated using simulations from the Beijing Normal University Earth S...The climatology and interannual variability of sea surface salinity （SSS） and freshwater flux （FWF） in the equatorial Pacific are analyzed and evaluated using simulations from the Beijing Normal University Earth System Model （BNU-ESM）. The simulated annual climatology and interannual variations of SSS, FWF, mixed layer depth （MLD）, and buoyancy flux agree with those observed in the equatorial Pacific. The relationships among the interannual anomaly fields simulated by BNU-ESM are analyzed to illustrate the climate feedbacks induced by FWF in the tropical Pacific. The largest interannual variations of SSS and FWF are located in the western-central equatorial Pacific. A positive FWF feedback effect on sea surface temperature （SST） in the equatorial Pacific is identified. As a response to El Nino-Southern Oscillation （ENSO）, the interannual variation of FWF induces ocean processes which, in turn, enhance ENSO. During El Nino, a positive FWF anomaly in the western-central Pacific （an indication of increased precipitation rates） acts to enhance a negative salinity anomaly and a negative surface ocean density anomaly, leading to stable stratification in the upper ocean. Hence, the vertical mixing and entrainment of subsurface water into the mixed layer are reduced, and the associated E1 Nino is enhanced. Related to this positive feedback, the simulated FWF bias is clearly reflected in SSS and SST simulations, with a positive FWF perturbation into the ocean corresponding to a low SSS and a small surface ocean density in the western-central equatorial Pacific warm pool.展开更多
BNU Law School is one of the youngest and most dynamic faculties at Beijing Normal University.Its precursor was the Law major established by the Department of Philosophy in 1995,the Department of Law established in 20...BNU Law School is one of the youngest and most dynamic faculties at Beijing Normal University.Its precursor was the Law major established by the Department of Philosophy in 1995,the Department of Law established in 2002,and the Criminal Law Science Research Institute was established in 2005.It culminated in the formal establishment of BNU Law School in 2006.Although BNU Law School was established in recent time,it has made outstanding achievements in various fields.展开更多
本文以美国科学情报研究所(ISI)出版的Web of Science中的SCI-EXPANDED数据来源为依据,针对检索到的1980-2007年北京师范大学SCI收录论文6609篇,从论文数量、院系分布、作者、刊载期刊、影响因子和被引次数6个方面进行了统计与分析。结...本文以美国科学情报研究所(ISI)出版的Web of Science中的SCI-EXPANDED数据来源为依据,针对检索到的1980-2007年北京师范大学SCI收录论文6609篇,从论文数量、院系分布、作者、刊载期刊、影响因子和被引次数6个方面进行了统计与分析。结果表明,北京师范大学SCI收录论文在数量保持稳定增长的同时,需要进一步重视提高质量。展开更多
基金supported by the National Natural Science Foundation of China(NSFC)(Grant Nos.41376039,41376019,and 41475101)the NSFC–Shandong Joint Fund for Marine Science Research Centers(Grant No.U1406401)+4 种基金the NSFC Innovative Group Grant(Project No.41421005)the IOCAS[Institute of Oceanology,Chinese Academy of Sciences(CAS)]through the CAS Strategic Priority Project[Western Pacific Ocean System(WPOS)]supported by the Joint Center for Global Change Studies(Project No.105019)the Key Laboratory of Meteorological Disaster of Ministry of Education,NUIST(Nanjing University of Information Science&Technology)(Grant No.KLME 1311)the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions
文摘The climatology and interannual variability of sea surface salinity （SSS） and freshwater flux （FWF） in the equatorial Pacific are analyzed and evaluated using simulations from the Beijing Normal University Earth System Model （BNU-ESM）. The simulated annual climatology and interannual variations of SSS, FWF, mixed layer depth （MLD）, and buoyancy flux agree with those observed in the equatorial Pacific. The relationships among the interannual anomaly fields simulated by BNU-ESM are analyzed to illustrate the climate feedbacks induced by FWF in the tropical Pacific. The largest interannual variations of SSS and FWF are located in the western-central equatorial Pacific. A positive FWF feedback effect on sea surface temperature （SST） in the equatorial Pacific is identified. As a response to El Nino-Southern Oscillation （ENSO）, the interannual variation of FWF induces ocean processes which, in turn, enhance ENSO. During El Nino, a positive FWF anomaly in the western-central Pacific （an indication of increased precipitation rates） acts to enhance a negative salinity anomaly and a negative surface ocean density anomaly, leading to stable stratification in the upper ocean. Hence, the vertical mixing and entrainment of subsurface water into the mixed layer are reduced, and the associated E1 Nino is enhanced. Related to this positive feedback, the simulated FWF bias is clearly reflected in SSS and SST simulations, with a positive FWF perturbation into the ocean corresponding to a low SSS and a small surface ocean density in the western-central equatorial Pacific warm pool.
文摘BNU Law School is one of the youngest and most dynamic faculties at Beijing Normal University.Its precursor was the Law major established by the Department of Philosophy in 1995,the Department of Law established in 2002,and the Criminal Law Science Research Institute was established in 2005.It culminated in the formal establishment of BNU Law School in 2006.Although BNU Law School was established in recent time,it has made outstanding achievements in various fields.
文摘本文以美国科学情报研究所(ISI)出版的Web of Science中的SCI-EXPANDED数据来源为依据,针对检索到的1980-2007年北京师范大学SCI收录论文6609篇,从论文数量、院系分布、作者、刊载期刊、影响因子和被引次数6个方面进行了统计与分析。结果表明,北京师范大学SCI收录论文在数量保持稳定增长的同时,需要进一步重视提高质量。
