Open Access
Indian Ocean variability in the CMIP5 multi-model ensemble:The Zonal Dipole mode
Lin Liu,Shang-Ping Xie,Shang-Ping Xie,Xiao-Tong Zheng,Tim Li,Yan Du,Gang Huang,Gang Huang,Weidong Yu +8 more
- Vol. 2013
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TLDR
In this paper, the performance of 21 Coupled Model Intercomparison Project Phase 5 (CMIP5) models in the simulation of the Indian Ocean Dipole (IOD) mode is evaluated.Abstract:
The performance of 21 Coupled Model Intercomparison Project Phase 5 (CMIP5) models in the simulation of the Indian Ocean Dipole (IOD) mode is evaluated. Compared to CMIP3, CMIP5 models exhibit a similar spread in IOD intensity. A detailed diagnosis was carried out to understand whether CMIP5 models have shown improvement in their representation of the important dynamical and thermodynamical feedbacks in the tropical Indian Ocean. These include the Bjerknes dynamic air-sea feedback, which includes the equatorial zonal wind response to sea surface temperature (SST) anomaly, the thermocline response to equatorial zonal wind forcing, the ocean subsurface temperature response to the thermocline variations, and the thermodynamic air-sea coupling that includes the wind-evaporation-SST and cloud-radiation-SST feedback. Compared to CMIP3, the CMIP5 ensemble produces a more realistic positive wind-evaporation-SST feedback during the IOD developing phase, while the simulation of Bjerknes dynamic feedback is more unrealistic especially with regard to the wind response to SST forcing and the thermocline response to surface wind forcing. The overall CMIP5 performance in the IOD simulation does not show remarkable improvements compared to CMIP3. It is further noted that the El Nio-Southern Oscillation (ENSO) and IOD amplitudes are closely related, if a model generates a strong ENSO, it is likely that this model also simulates a strong IOD.read more
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ENSO representation in climate models: from CMIP3 to CMIP5
TL;DR: In this article, the ability of CMIP3 and CMIP5 coupled ocean-atmosphere general circulation models (CGCMs) to simulate the tropical Pacific mean state and El Nino-Southern Oscillation (ENSO) was analyzed.
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Indo-Western Pacific Ocean Capacitor and Coherent Climate Anomalies in Post-ENSO Summer: A Review
TL;DR: In this paper, the authors provide historical accounts of major milestones and synthesize recent advances in the endeavor to understand summer variability over the Indo-Northwest Pacific region, and reveal a coupled ocean-atmosphere mode that builds on both mechanisms in a two-stage evolution.
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The Annual Cycle of East African Precipitation
TL;DR: In this paper, the authors analyzed the associated annual cycles of atmospheric convective stability, circulation, and moisture budget over East Africa and found that the atmospheric circulation is dominated by a pattern of convergence near the surface, divergence in the lower troposphere, and convergence again at upper levels.
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Revisiting ENSO/Indian Ocean Dipole phase relationships
Malte F. Stuecker,Malte F. Stuecker,Axel Timmermann,Fei-Fei Jin,Yoshimitsu Chikamoto,Wenjun Zhang,Andrew T. Wittenberg,Esther Widiasih,Sen Zhao +8 more
TL;DR: In this article, the characteristics of the Indian Ocean Dipole (IOD), such as its power spectrum and phase relationship with the El Nino-Southern Oscillation (ENSO), can be succinctly explained by ENSO combination mode (C-mode) wind and heat flux forcing together with a seasonal modulation of the air/sea coupled Indian Ocean (IO) Bjerknes feedback.
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Insights from CMIP6 for Australia's future climate
Michael R. Grose,Sugata Narsey,François Delage,Andrew J. Dowdy,Margot Bador,Ghyslaine Boschat,Ghyslaine Boschat,Christine T. Y. Chung,Jules B. Kajtar,Surendra Rauniyar,Mandy Freund,Kewei Lyu,Harun Rashid,Xuebin Zhang,Scott Wales,Claire Trenham,Neil J. Holbrook,Tim Cowan,Tim Cowan,Lisa V. Alexander,Julie M. Arblaster,Scott B. Power +21 more
TL;DR: In this article, the authors focus on three key aspects of the Coupled Model Intercomparison Project phase 6 (CMIP6): what is new in these models, how the available CMIP6 models evaluate compared to CMIP5, and their projections of the future Australian climate compared to the highest emissions scenario.
References
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Journal ArticleDOI
An Overview of CMIP5 and the Experiment Design
TL;DR: The fifth phase of the Coupled Model Intercomparison Project (CMIP5) will produce a state-of-the- art multimodel dataset designed to advance the authors' knowledge of climate variability and climate change.
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Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century
Nick Rayner,David E. Parker,E. B. Horton,Chris K. Folland,Lisa V. Alexander,David P. Rowell,Elizabeth C. Kent,Alexey Kaplan +7 more
TL;DR: HadISST1 as mentioned in this paper replaces the global sea ice and sea surface temperature (GISST) data sets and is a unique combination of monthly globally complete fields of SST and sea ice concentration on a 1° latitude-longitude grid from 1871.
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A Dipole Mode in the Tropical Indian Ocean
TL;DR: An analysis of observational data over the past 40 years shows a dipole mode in the Indian Ocean: a pattern of internal variability with anomalously low sea surface temperatures off Sumatra and high seasurface temperatures in the western Indian Ocean, with accompanying wind and precipitation anomalies.
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The NCEP–NCAR 50-Year Reanalysis: Monthly Means CD-ROM and Documentation
Robert Kistler,Eugenia Kalnay,William D. Collins,Suranjana Saha,Glenn H. White,John S. Woollen,Muthuvel Chelliah,Wesley Ebisuzaki,Masao Kanamitsu,Vernon E. Kousky,Huug van den Dool,Roy L. Jenne,M. Fiorino +12 more
TL;DR: The National Centers for Environmental Prediction (NCEP) and National Center for Atmospheric Research (NCAR) have cooperated in a project to produce a retroactive record of more than 50 years of global analyses of atmospheric fields in support of the needs of the research and climate monitoring communities as mentioned in this paper.
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Atmospheric teleconnections from the equatorial pacific1
TL;DR: In this article, it was shown that the strong response of the northeast Pacific westerlies to big positive anomalies of equatorial sea temperature, observed in the winter of 1957-58, has been found to repeat during the major equatorial Sea temperature maxima in the winters of 1963-64 and 1965-66.