{"id":"a5e2713a-efbf-45e4-bb33-7e9135d15bd3","title":"南极Law Dome冰芯甲烷浓度（1010-1980）","title_en":"Law Dome area Methane concentration (1010-1980)","serial":"地球大数据科学工程专项时空三极环境项目","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。 对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"","description":"从公元1000年到现在大气中甲烷的浓度在南北极冰芯呈现显著的上升，本数据来自澳大利亚塔斯马尼亚实验室，对冰芯样品采取湿法提取，通过对所有样品使用相同的测量程序和校准， 获取了高分辨率数据。数据结果与瑞士伯尔尼大学、丹麦哥本哈根大学以及美国俄亥俄州大学等国际著名冰芯温室气体实验室结果一致。\n各变量的物理意义：\n第一列：时间；第二列：甲烷浓度数值","doi":"","projection":"","language":"zh","share_type":"online","east":360.0,"west":null,"south":-90.0,"north":-60.0,"scale":1,"crs":"","filesize":0.12,"share_policy":"a","ts_created":"2018-02-15T20:28:46+08:00","doi_type":"国际公开共享数据","ts_updated":"2021-04-19T10:36:38.203509+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":".xlsx","project":[10,11],"specials":["b4b306da-eab1-47ef-ae5d-be2556298efd"],"cite":"Etheridge, D.M., L.P. Steele, R.J. Francey, and R.L. Langenfelds. 1998. Atmospheric methane between 1000 A.D. and present: Evidence of anthropogenic emissions and climatic variability. Journal of Geophysical Research 103(D13):15,979-15,993.","review_status":5,"review_invite":[],"review_editor":{"id":21057,"last_login":"2022-04-02T11:43:37.753860+08:00","username":"gecm","email":"gechm@lzb.ac.cn","is_active":true,"is_staff":true,"user_name":"盖春梅"},"data_sources":"","temporal_resolution":"Yearly","spatial_resolution":"","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"a5e2713a-efbf-45e4-bb33-7e9135d15bd3","three_pole":null,"third_pole":null},"username":"朱光熙","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":2243}