Abstract. Palaeoclimate information on multiple climate variables at different spatiotemporal scales is becoming increasingly important to understand environmental and societal responses to climate change. A lack of high-quality reconstructions of past hydroclimate has recently been identified as a critical research gap. Speleothems, with their precise chronologies, widespread distribution, and ability to record changes in local to regional hydroclimate variability, are an ideal source of such information. Here, we present a new version of the Speleothem Isotopes Synthesis and AnaLysis database (SISALv3), which has been expanded to include trace element ratios and Sr isotopes as additional, hydroclimate-sensitive geochemical proxies. The oxygen and carbon isotope data included in previous versions of the database have been substantially expanded. SISALv3 contains speleothem data from 365 sites from across the globe, including 95 Mg/Ca, 85 Sr/Ca, 52 Ba/Ca, 25 U/Ca, 29 P/Ca, and 14 Sr-isotope records. The database also has increased spatiotemporal coverage for stable oxygen (892) and carbon (620) isotope records compared with SISALv2 (which consists of 673 and 430 stable oxygen and carbon records, respectively). Additional meta information has been added to improve the machine-readability and filtering of data. Standardized chronologies are included for all new entities along with the originally published chronologies. Thus, the SISALv3 database constitutes a unique resource of speleothem palaeoclimate information that allows regional to global palaeoclimate analyses based on multiple geochemical proxies, permitting more robust interpretations of past hydroclimate and comparisons with isotope-enabled climate models and other Earth system and hydrological models. The database can be accessed at https://doi.org/10.5287/ora-2nanwp4rk (Kaushal et al., 2024).

中文翻译：

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SISALv3：全球洞穴稳定同位素和微量元素数据库

摘要。不同时空尺度上多个气候变量的古气候信息对于了解环境和社会对气候变化的反应变得越来越重要。缺乏对过去水文气候的高质量重建最近被认为是一个关键的研究差距。洞穴化石具有精确的年表、广泛的分布以及记录局部到区域水文气候变化的能力，是此类信息的理想来源。在这里，我们推出了新版本的 Speleothem 同位素合成和分析数据库 (SISALv3)，该数据库已扩展为包括痕量元素比率和 Sr 同位素，作为额外的水文气候敏感地球化学代理。先前版本的数据库中包含的氧和碳同位素数据已得到大幅扩展。 SISALv3 包含来自全球 365 个地点的洞穴化石数据，包括 95 Mg/Ca、85 Sr/Ca、52 Ba/Ca、25 U/Ca、29 P/Ca 和 14 Sr 同位素记录。与 SISALv2（分别由 673 个和 430 个稳定氧和碳记录组成）相比，该数据库还增加了稳定氧 (892) 和碳 (620) 同位素记录的时空覆盖范围。添加了额外的元信息以提高机器可读性和数据过滤。所有新实体的标准化年表与最初发布的年表一起包含在内。因此，SISALv3 数据库构成了独特的洞穴古气候信息资源，允许基于多个地球化学代理进行区域到全球古气候分析，从而可以对过去的水文气候进行更可靠的解释，并与同位素气候模型和其他地球系统和水文模型进行比较。该数据库可通过 https://doi.org/10.5287/ora-2nanwp4rk 访问（Kaushal 等人，2024）。