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Responses of ENSO and NAO to the external radiative forcing during the last millennium; results from CCSM4 and MPI-ESM-P simulations

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doi: 10.1016/j.quaint.2017.12.038
Authors:Xu, Tingting; Shi, Zhengguo; An, Zhisheng
Author Affiliations:Primary:
Environmental Science Research & Design Institute of Zhejiang Province, Zhejiang "Environmental Pollution & Control" Journal Press, Hangzhou, China
Other:
Chinese Academy of Sciences, Institute of Earth Environment, State Key Laboratory of Loess and Quaternary Geology, Xi'an, China
CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China
Volume Title:Asia Pacific 2K
Volume Authors:Yan, Hong, editor; Yang, Bao; Tan, Liangcheng
Source:Asia Pacific 2K, edited by Hong Yan, Bao Yang and Liangcheng Tan. Quaternary International, Vol.487, p.99-111. Publisher: Elsevier, Oxford, United Kingdom. ISSN: 1040-6182
Publication Date:2018
Note:In English. 83 refs.; illus., incl. 2 tables, sketch maps
Summary:The decadal-centennial variations of the El Niño-Southern Oscillation (ENSO) and North Atlantic Oscillation (NAO) are analyzed, based on the outputs of last millennium (LM) and Historical experiments (850-2005 AD) and control (CTL) experiments from two climate models Community Climate System Model, version 4 (CCSM4) and Max Planck Institute for Meteorology Paleoclimate Model (MPI-ESM-P). Variation of ENSO and NAO among the Medieval Warm Period (MWP, 1050-1150 AD), Little Ice Age (LIA, 1600-1700 AD) and 20th Century Warming (20CW, 1905-2005 AD) are focused. Significant bi-centennial and multi-decadal periods are detected in the ENSO and NAO series, respectively. Both models have exerted statistically-significant contrasts of ENSO and NAO phases among the three typical periods. The model-independent shifts of an El Niño-like state during the MWP, a La Niña-like state during the LIA and an El Niño-like state during the 20CW are captured. However, the NAO series display a model-dependence. CCSM4 features a negative-phased NAO during the LIA, while MPI-ESM-P is characterized by a positive-phased NAO in the same period. The shifts of the ENSO and NAO phases are mainly due to the external radiative forcing, including the solar-volcanic (SV) forcing and greenhouse gases (GHG) forcing.
Subjects:Cenozoic; Climate change; El Nino Southern Oscillation; Greenhouse gases; Holocene; Medieval Warm Period; Models; Neoglacial; North Atlantic Oscillation; Quaternary; Simulation; Upper Holocene; 20th Century Warming; Community Climate System Model; External radiative forcing; Max Planck Institute for Meteorology Paleoclimate Model
Coordinates:S400000 N600000 W0600000 E1200000
Record ID:875545-12
Copyright Information:GeoRef, Copyright 2020 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
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