Mosbrugger Volker, Utescher Torsten, Dilcher David L
Institut für Geowissenschaften, Sigwartstrasse 10, 72076 Tübingen, Germany.
Proc Natl Acad Sci U S A. 2005 Oct 18;102(42):14964-9. doi: 10.1073/pnas.0505267102. Epub 2005 Oct 10.
Continental climate evolution of Central Europe has been reconstructed quantitatively for the last 45 million years providing inferred data on mean annual temperature and precipitation, and winter and summer temperatures. Although some regional effects occur, the European Cenozoic continental climate record correlates well with the global oxygen isotope record from marine environments. During the last 45 million years, continental cooling is especially pronounced for inferred winter temperatures but hardly observable from summer temperatures. Correspondingly, Cenozoic cooling in Central Europe is directly associated with an increase of seasonality. In contrast, inferred Cenozoic mean annual precipitation remained relatively stable, indicating the importance of latent heat transport throughout the Cenozoic. Moreover, our data support the concept that changes in atmospheric CO2 concentrations, although linked to climate changes, were not the major driving force of Cenozoic cooling.
中欧过去4500万年的大陆气候演变已被定量重建,提供了年平均温度和降水量以及冬季和夏季温度的推断数据。尽管存在一些区域影响,但欧洲新生代大陆气候记录与海洋环境的全球氧同位素记录相关性良好。在过去4500万年中,大陆降温在推断的冬季温度中尤为明显,但从夏季温度中几乎观察不到。相应地,中欧新生代降温与季节性增强直接相关。相比之下,推断的新生代年平均降水量保持相对稳定,表明潜热输送在整个新生代的重要性。此外,我们的数据支持这样一种观点,即大气二氧化碳浓度的变化虽然与气候变化有关,但不是新生代降温的主要驱动力。