Atmospheric krypton-85 activity concentrations

The data collection consists of eleven datasets of atmospheric krypton-85 activity concentrations with 4 datasets from monitoring stations in the northern hemisphere ("Early Measurements NH", "Freiburg", "Schauinsland" and "Jungfraujoch") and 7 datasets from monitoring stations in the southern hemisphere ("Adelaide", "Antarctica", Cape Grim", "Cape Point", "Darwin", "Tahitit" and "Terre-Adelie"). "Adelaide" start: July 2015; end: ongoing (June 2020); number of measurements: 255; location: Adelaide, Australia; "Antarctica" start: June 1983; end: January 2008; number of measurements: 415; location: near Neumayer station, Antarctica; "Cape Grim" start: April 1987; end: July 1996; number of measurements: 166; location: Tasmania, Australia; "Cape Point" start: August 1985; end: October 1997; number of measurements: 415; location: Cape Point, South Africa; "Darwin" start: August 2007; end: May 2010; number of measurements: 120; location: Darwin, Australia; "Early Measurements NH" start: December 1959; end: May 1976; number of measurements: 204; location: various monitoring stations in the northern hemisphere; "Freiburg" start: June 1973; end: ongoing (July 2020); number of measurements: 2386; location: Freiburg, Germany; "Jungfraujoch" start: January 1990; end: ongoing (June 2020); number of measurements: 1547; location: Berner Alps, Switzerland (3500 m a.s.l); "Schauinsland" start: February 1976; end: ongoing (July 2020); number of measurements: 2386; location: near Freiburg, Germany (1200 m a.s.l); "Tahiti" start: August 1969; end: November 1976; number of measurements: 18; location: Tahiti, French Polynesia; "Terre-Adélie" start: March 1968; end: October 1977; number of measurements: 32; location: eastern Antarctica; All measurements were conducted via decay counting in gas proportional counters with a measurement uncertainty of about 3%. However, for the datasets "Tahiti" and "Terre-Adélie" no errors were given in the original publications and a conservative estimate of 10% measurement uncertainty was taken. Most of the data has been published already and the sources accessible via the internet are found in the reference section. A more detailed description of the data collection and a full list of references can be found in: A. Kersting, C. Schlosser, A. Bollhöfer, S. Schmid, M. Konrad, K. Barry und A. Suckow, „Krypton-85 datasets of the northern and southern hemisphere collected over the past 60 years,“ Data in Brief, in Press. The entire data collection is analysed in: A. Kersting, C. Schlosser, A. Bollhöfer und A. Suckow, “Evaluating 5 decades of atmospheric 85Kr measurements in the southern hemisphere to derive an input function for dating water and ice with implications for interhemispheric circulation and the global 85Kr emission inventory.“ Journal of Environmental Radioactivity, in Press.

本数据集共包含11组大气氪-85（krypton-85）活度浓度数据集，其中4组来自北半球监测站，分别为"Early Measurements NH"、"Freiburg"、"Schauinsland"及"Jungfraujoch"；剩余7组来自南半球监测站，分别为"Adelaide"、"Antarctica"、"Cape Grim"、"Cape Point"、"Darwin"、"Tahiti"及"Terre-Adélie"。

"Adelaide"数据集：监测时段为2015年7月起至今，最新数据截至2020年6月，共获取有效测量数据255条，监测点位位于澳大利亚阿德莱德市。
"Antarctica"数据集：监测时段为1983年6月至2008年1月，共获取有效测量数据415条，监测点位位于南极洲诺伊迈尔站附近。
"Cape Grim"数据集：监测时段为1987年4月至1996年7月，共获取有效测量数据166条，监测点位位于澳大利亚塔斯马尼亚州。
"Cape Point"数据集：监测时段为1985年8月至1997年10月，共获取有效测量数据415条，监测点位位于南非好望角。
"Darwin"数据集：监测时段为2007年8月至2010年5月，共获取有效测量数据120条，监测点位位于澳大利亚达尔文市。
"Early Measurements NH"数据集：监测时段为1959年12月至1976年5月，共获取有效测量数据204条，监测点位覆盖北半球多个常规监测站。
"Freiburg"数据集：监测时段为1973年6月起至今，最新数据截至2020年7月，共获取有效测量数据2386条，监测点位位于德国弗赖堡市。
"Jungfraujoch"数据集：监测时段为1990年1月起至今，最新数据截至2020年6月，共获取有效测量数据1547条，监测点位位于瑞士伯尔尼阿尔卑斯山区，海拔3500米（a.s.l.）。
"Schauinsland"数据集：监测时段为1976年2月起至今，最新数据截至2020年7月，共获取有效测量数据2386条，监测点位位于德国弗赖堡附近，海拔1200米（a.s.l.）。
"Tahiti"数据集：监测时段为1969年8月至1976年11月，共获取有效测量数据18条，监测点位位于法属波利尼西亚塔希提岛。
"Terre-Adélie"数据集：监测时段为1968年3月至1977年10月，共获取有效测量数据32条，监测点位位于南极洲东部区域。

所有测量均采用气体正比计数器（gas proportional counters）衰变计数法完成，测量不确定度约为3%。但"Tahiti"与"Terre-Adélie"数据集的原始文献未提供误差数据，因此采用保守估计的10%作为其测量不确定度。

本数据集多数数据已公开发表，可通过互联网获取的文献来源详见参考文献列表。有关本数据集收集工作的详细说明及完整参考文献列表可参见：A. Kersting、C. Schlosser、A. Bollhöfer、S. Schmid、M. Konrad、K. Barry及A. Suckow发表于《Data in Brief》（待刊）的论文《Krypton-85 datasets of the northern and southern hemisphere collected over the past 60 years》。

针对本数据集的整体分析研究可参见：A. Kersting、C. Schlosser、A. Bollhöfer及A. Suckow发表于《Journal of Environmental Radioactivity》（待刊）的论文《Evaluating 5 decades of atmospheric 85Kr measurements in the southern hemisphere to derive an input function for dating water and ice with implications for interhemispheric circulation and the global 85Kr emission inventory》。