Tropical climate and vegetation simulations during the Heinrich event 1 using an Earth System Model of Intermediate Complexity (EMIC) - the University of Victoria Earth System-Climate Model (UVic ESCM)

Abrupt climate changes from 18 to 15 thousand years before present (kyr BP) associated with Heinrich Event 1 (HE1) had a strong impact on vegetation patterns not only at high latitudes of the Northern Hemisphere, but also in the tropical regions around the Atlantic Ocean. To gain a better understanding of the linkage between high and low latitudes, we used the University of Victoria (UVic) Earth System-Climate Model (ESCM) with dynamical vegetation and land surface components to simulate four scenarios of climate-vegetation interaction: the pre-industrial era, the Last Glacial Maximum (LGM), and a Heinrich-like event with two different climate backgrounds (interglacial and glacial). We calculated mega-biomes from the plant-functional types (PFTs) generated by the model to allow for a direct comparison between model results and palynological vegetation reconstructions. […]

距今18至15千年前（公元前kyr BP）的突发性气候变化，与海因里希事件1（HE1）密切相关，对植被分布产生了深远影响，这不仅体现在北半球的高纬度地区，同样波及到大西洋周边的热带区域。为了深入探究高纬度与低纬度之间的联系，我们采用了维多利亚大学（UVic）地球系统-气候模型（ESCM），该模型集成了动态植被和地表成分，以模拟四种气候-植被相互作用场景：前工业化时代、全新世最大冰期（LGM）以及具有两种不同气候背景的海因里希型事件（间冰期和冰期）。通过计算由模型生成的植物功能类型（PFTs）所形成的巨型植被区，我们得以直接对比模型结果与孢粉学植被重建数据。...