Transient Holocene experiments under orbital forcing using the comprehensive global climate model CCSM3 (Community Climate System Model 3)

The Southern Hemisphere Westerly Winds (SWW) have been suggested to exert a critical influence on global climate through wind-driven upwelling of deep water in the Southern Ocean and the potentially resulting atmospheric CO2 variations. The investigation of the temporal and spatial evolution of the...

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Bibliographic Details
Main Authors: Varma, Vidya, Prange, Matthias, Merkel, Ute, Kleinen, Thomas, Lohmann, Gerrit, Pfeiffer, Madlene, Renssen, Hans, Wagner, Axel, Wagner, Sebastian, Schulz, Michael
Format: Dataset
Language:English
Published: PANGAEA 2011
Subjects:
Center for Marine Environmental Sciences
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File name
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Integrierte Analyse zwischeneiszeitlicher Klimadynamik
INTERDYNAMIK
MARUM
Uniform resource locator/link to file
Southern Ocean
Austral
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.776063
https://doi.org/10.1594/PANGAEA.776063
Description
Summary:The Southern Hemisphere Westerly Winds (SWW) have been suggested to exert a critical influence on global climate through wind-driven upwelling of deep water in the Southern Ocean and the potentially resulting atmospheric CO2 variations. The investigation of the temporal and spatial evolution of the SWW along with forcings and feedbacks remains a significant challenge in climate research. In this study, the evolution of the SWW under orbital forcing from the early Holocene (9 kyr BP) to pre-industrial modern times is examined with transient experiments using the comprehensive coupled global climate model CCSM3. Analyses of the model results suggest that the annual and seasonal mean SWW were subject to an overall strengthening and poleward shifting trend during the course of the early-to-late Holocene under the influence of orbital forcing, except for the austral spring season, where the SWW exhibited an opposite trend of shifting towards the equator.

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