GeoZentrum Nordbayern, Paleobiology, Erlangen, 91054, Germany.
The University of Queensland, ARC Centre of Excellence for Coral Reef Studies and School of Biological Sciences, Brisbane, QLD 4072, Australia.
Sci Rep. 2017 Sep 5;7(1):10461. doi: 10.1038/s41598-017-10961-3.
Global mean temperature is thought to have exceeded that of today during the last interglacial episode (LIG, ~ 125,000 yrs b.p.) but robust paleoclimate data are still rare in low latitudes. Occurrence data of tropical reef corals may provide new proxies of low latitude sea-surface temperatures. Using modern reef coral distributions we developed a geographically explicit model of sea surface temperatures. Applying this model to coral occurrence data of the LIG provides a latitudinal U-shaped pattern of temperature anomalies with cooler than modern temperatures around the equator and warmer subtropical climes. Our results agree with previously published estimates of LIG temperatures and suggest a poleward broadening of the habitable zone for reef corals during the LIG.
据认为，在上一个间冰期（LIG，约 125000 年前）期间，全球平均温度已经超过了今天的水平，但在低纬度地区，仍然很少有可靠的古气候数据。热带珊瑚礁的发生数据可能为低纬度海表温度提供新的代理。我们利用现代珊瑚礁的分布，建立了一个明确的海面温度地理模型。将该模型应用于 LIG 的珊瑚发生数据，提供了一个纬向 U 型温度异常模式，赤道周围的温度比现代温度低，亚热带气候较温暖。我们的结果与之前发表的 LIG 温度估计值一致，并表明在 LIG 期间，珊瑚礁的适宜生存带向极地扩大。
