2019年3月29日至4月2日,在中德科学中心的资助下,德国图宾根大学(Eberhard Karls Universit t Tübingen)和中国科学院自然科学史研究所在北京举办了“近代早期欧洲与中国之间科学技术知识的转移”(Transfer of Scientific and Tech...2019年3月29日至4月2日,在中德科学中心的资助下,德国图宾根大学(Eberhard Karls Universit t Tübingen)和中国科学院自然科学史研究所在北京举办了“近代早期欧洲与中国之间科学技术知识的转移”(Transfer of Scientific and Technical Knowledge between Europe and China during the Early Modern Period)研讨会。来自中国、德国、荷兰等国家和地区的50多位学者参加了会议,24位报告人做了学术报告。展开更多
In recent years,long-term continuous sea-ice datasets have been developed,and they cover the periods before and after the satellite era.How these datasets differ from one another before the satellite era,and whether o...In recent years,long-term continuous sea-ice datasets have been developed,and they cover the periods before and after the satellite era.How these datasets differ from one another before the satellite era,and whether one is more reliable than the other,is important but unclear because the sea-ice record before 1979 is sparse and not continuous.In this letter,two sets of sea-ice datasets are evaluated:one is the HadISST1 dataset from the Hadley Centre,and the other is the SIBT1850(Gridded Monthly Sea Ice Extent and Concentration,from 1850 Onward)dataset from the National Snow and Ice Data Center(NSIDC).In view of its substantial importance for climate,the winter sea ice in the Barents and Kara seas(BKS)is of particular focus.A reconstructed BKS sea-ice extent(SIE)is developed using linear regression from the mean of observed surface air temperature at two adjacent islands,Novaya Zemlya and Franz Josef Land(proxy).One validation illustrates that the proxy is substantially coherent with the BKS sea-ice anomaly in the observations and the CMIP5(phase 5 of the Coupled Model Intercomparison Project)historical experiments.This result indicates that the proxy is reasonable.Therefore,the establishment of the reconstructed BKS SIE is also reasonable.The evaluation results based on the proxy suggest that the sea-ice concentration prior to the satellite era in the NSIDC dataset is more realistic and reliable than that in the Hadley Centre dataset,and thus is more appropriate for use.展开更多
中德演化经济学与中国经济发展问题研究中心(Sino—German Centre for Research into Evolutionary Economics and Chinese Economic Development，以下简称SIGECEE)，是南京大学工程管理学院院长盛昭瀚教授与德国Witten／Herdecke大学...中德演化经济学与中国经济发展问题研究中心(Sino—German Centre for Research into Evolutionary Economics and Chinese Economic Development，以下简称SIGECEE)，是南京大学工程管理学院院长盛昭瀚教授与德国Witten／Herdecke大学德中管理学院院长Carsten Herrmann—Pillath博士(即何梦笔教授)联合创立的、以演化经济学和中国经济发展问题研究为中心的学术机构。展开更多
文摘2019年3月29日至4月2日,在中德科学中心的资助下,德国图宾根大学(Eberhard Karls Universit t Tübingen)和中国科学院自然科学史研究所在北京举办了“近代早期欧洲与中国之间科学技术知识的转移”(Transfer of Scientific and Technical Knowledge between Europe and China during the Early Modern Period)研讨会。来自中国、德国、荷兰等国家和地区的50多位学者参加了会议,24位报告人做了学术报告。
基金jointly supported by the National Natural Science Foundation of China [grant numbers 41790473 and41421004]the Strategic Priority Research Program of the Chinese Academy of Sciences [grant number XDA19070402]
文摘In recent years,long-term continuous sea-ice datasets have been developed,and they cover the periods before and after the satellite era.How these datasets differ from one another before the satellite era,and whether one is more reliable than the other,is important but unclear because the sea-ice record before 1979 is sparse and not continuous.In this letter,two sets of sea-ice datasets are evaluated:one is the HadISST1 dataset from the Hadley Centre,and the other is the SIBT1850(Gridded Monthly Sea Ice Extent and Concentration,from 1850 Onward)dataset from the National Snow and Ice Data Center(NSIDC).In view of its substantial importance for climate,the winter sea ice in the Barents and Kara seas(BKS)is of particular focus.A reconstructed BKS sea-ice extent(SIE)is developed using linear regression from the mean of observed surface air temperature at two adjacent islands,Novaya Zemlya and Franz Josef Land(proxy).One validation illustrates that the proxy is substantially coherent with the BKS sea-ice anomaly in the observations and the CMIP5(phase 5 of the Coupled Model Intercomparison Project)historical experiments.This result indicates that the proxy is reasonable.Therefore,the establishment of the reconstructed BKS SIE is also reasonable.The evaluation results based on the proxy suggest that the sea-ice concentration prior to the satellite era in the NSIDC dataset is more realistic and reliable than that in the Hadley Centre dataset,and thus is more appropriate for use.
文摘中德演化经济学与中国经济发展问题研究中心(Sino—German Centre for Research into Evolutionary Economics and Chinese Economic Development，以下简称SIGECEE)，是南京大学工程管理学院院长盛昭瀚教授与德国Witten／Herdecke大学德中管理学院院长Carsten Herrmann—Pillath博士(即何梦笔教授)联合创立的、以演化经济学和中国经济发展问题研究为中心的学术机构。
