Results of Heinrich event 1 simulation from the University of Victoria Earth System-Climate Model (UVic ESCM) and the Community Climate System Model (CCSM3) ...

• Main Authors: Handiani, Dian Noor, Paul, André, Prange, Matthias, Merkel, Ute, Dupont, Lydie M, Zhang, Xiao
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: File name; File size; File type; Description; Uniform resource locator/link to model result file; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.822369; https://doi.pangaea.de/10.1594/PANGAEA.822369

We investigated changes in tropical climate and vegetation cover associated with abrupt climate change during Heinrich Event 1 (HE1, ca. 17.5 ka BP) using two different global climate models: the University of Victoria Earth System-Climate Model (UVic ESCM) and the Community Climate System Model version 3 (CCSM3). Tropical South American and African pollen records suggest that the cooling of the North Atlantic Ocean during HE1 influenced the tropics through a southward shift of the rain belt. In this study, we simulated the HE1 by applying a freshwater perturbation to the North Atlantic Ocean. The resulting slowdown of the Atlantic Meridional Overturning Circulation was followed by a temperature seesaw between the Northern and Southern Hemispheres, as well as a southward shift of the tropical rain belt. The shift and the response pattern of the tropical vegetation around the Atlantic Ocean were more pronounced in the CCSM3 than in the UVic ESCM simulation. For tropical South America, opposite changes in tree ... : Supplement to: Handiani, Dian Noor; Paul, André; Prange, Matthias; Merkel, Ute; Dupont, Lydie M; Zhang, Xiao (2013): Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3. Climate of the Past, 9(4), 1683-1696 ...