Anthropogenic and solar forcing in delta C-13 time pattern of coralline sponges

作者：Madonia Paolo^*; Reitner Joachim

来源：Isotopes in Environmental and Health Studies, 2014, 50(4): 491-496.

DOI：10.1080/10256016.2014.929577

• coral reef
• isotope geochemistry
• carbon-13
• isotope ecology
• paleoclimate
• Caribbean Sea

We present the results of a re-analysis of a previously published carbon isotope data-set related to coralline sponges in the Caribbean Sea. The original interpretation led to the discrimination between a pre-industrial period, with a signal controlled by solar-induced climatic variations, followed by the industrial era, characterized by a progressive delta C-13 negative shift due to the massive anthropogenic carbon emissions. Our re-analysis allowed to extract from the raw isotopic data evidence of a solar forcing still visible during the industrial era, with a particular reference to the 88-year Gleissberg periods. These signals are related to slope changes in both the delta C-13 versus time and the delta C-13 versus carbon emission curves.

• 出版日期2014-10-2