Tropical climate variability and the influence of environmental stressors as recorded in Orbicella and Siderastrea coral skeletons from Belize

在这个项目中，我们旨在系统地分析来自伯利兹堡礁和环礁的珊瑚档案，这些珊瑚礁是大西洋最大的珊瑚礁系统，采用多代理方法。我们将高分辨率地分析来自不同礁体环境的6个现存岩心的18O和Sr/Ca，并将地球化学与覆盖19世纪和20世纪的岩石年代学数据(伸展速率、密度、钙化速率)相结合。我们将把这些数据与环境参数、网格化的仪器气候数据以及包括厄尔尼诺南方涛动(ENSO)、大西洋十年振荡(AMO)和北大西洋涛动(NAO)在内的气候模式的表达进行比较。通过这种方法，我们将能够对SPP 2299的核心科学问题做出贡献，即破译全球气候变化和热带气候变率模式之间的相互作用，以及它们对变暖世界中的珊瑚礁生态系统的综合影响。此外，我们将能够回答主要问题，如SST上升和海洋酸化如何与这一主要大西洋珊瑚礁区域的局部压力因素相互作用。

In this project, we aim at systematically analyzing coral archives from Belize barrier and atoll reefs, the largest reef system in the Atlantic, with a multi-proxy approach. We will analyze 18O and Sr/Ca at high resolution in six existing cores from various reef environments and combine geochemical with sclerochronological data (extension rate, density, calcification rate) covering the 19th and 20th century. We will compare these data with environmental parameters, gridded instrumental climate data, and expressions of climate modes including the El-Niño Southern Oscillation (ENSO), the Atlantic Multidecadal Oscillation (AMO), and the North Atlantic Oscillation (NAO). With this approach, we will be able to contribute to the central scientific question of SPP 2299 of deciphering the interaction between global climate change and modes of tropical climate variability and their combined influence on reef ecosystems in a warming world. Also, we will be able to provide answers to overarching questions as to how rising SSTs and ocean acidification interact with local stressors in this major Atlantic coral reef area.