Three reconstructions of the formation of large open ocean polynyas in the Southern Ocean using ice core records

The dataset contains the indices for three reconstructions of open ocean polynya formation in the Southern Ocean over the period 1250-1990 and their uncertainties. See the associated publication

Goosse H., Dalaiden Q., Cavitte M.G.P., Zhang L. Can we reconstruct the formation of large open ocean polynyas in the Southern Ocean using ice core records? Climate of the past 2020. https://doi.org/10.5194/cp-2020-91

The data are included in a text file. The first column is the time (in years). The next six columns are the three reconstructions using data assimilation with SPEAR_AM2 (DA AM2), using data assimilation with SPEAR_LO (DA LO) and a simple average of standardized time series (Stat), each of them directly followed by their uncertainties. The uncertainties are estimated from the standard deviation of the seven reconstructions using different combinations of the available ice core records.

Please contact Hugues Goosse([e-mail]) for more information.

本数据集包含1250年至1990年间南大洋开阔海域冰间湖（polynya）形成过程的3种重建结果及其不确定性，详见相关研究文献：
Goosse H.、Dalaiden Q.、Cavitte M.G.P.、Zhang L. 《能否利用冰芯记录重建南大洋大型开阔海域冰间湖的形成过程》，《Climate of the Past》，2020年，DOI链接：https://doi.org/10.5194/cp-2020-91

数据集以纯文本文件存储。文件第一列为时间（单位：年）；后续六列依次为三种重建方案的结果：基于SPEAR_AM2的数据同化（DA AM2）、基于SPEAR_LO的数据同化（DA LO），以及标准化时间序列的简单平均重建（Stat），每一种重建结果后均直接附带其对应的不确定性数值。上述不确定性通过对7种采用不同可用冰芯记录组合的重建结果计算标准差得到。

如需获取更多信息，请联系Hugues Goosse（邮箱：[e-mail]）。