GC026
Dynamics of decadal to multi-decadal modes and their impact on regional and global climate variability
Session ID#: 78486
Session Description:
In recent years, the influences of decadal to multi-decadal modes of sea surface temperature (SST) variability on regional and global climate have been well recognized. However, the mechanisms governing these modes of SST variability (e.g., Pacific Decadal Variability (PDV), Atlantic Multi-decadal Variability (AMV), Indian Ocean Dipole mode (IOD)) are still unclear and under intensive debate. Moreover, there are still research questions on: 1. how these modes of climate variability interact with each other on decadal to centennial timescales; 2. how these interactions contribute to global and regional climate trends; 3. whether these interactions will change under global climate changes due to increased anthropogenic forcing or changes in background climate states; and 4. what role local air-sea interactions and ocean dynamics has played in defining these modes. In this session, we welcome abstracts related to these topics based on both observational and modeling studies over paleo, modern and future time periods.
Co-Sponsor(s):
Index Terms:
1616 Climate variability [GLOBAL CHANGE]
1620 Climate dynamics [GLOBAL CHANGE]
1626 Global climate models [GLOBAL CHANGE]
1635 Oceans [GLOBAL CHANGE]
Primary Convener: Aixue Hu, National Center for Atmospheric Research, Boulder, CO, United States
Conveners: Robert Jnglin Wills, University of Washington, Seattle, WA, United States, Yangyang Xu, University of California San Diego, La Jolla, CA, United States; Texas A&M University College Station, College Station, TX, United States and Pengfei Lin, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing, 100029, China, Beijing, China
Primary Liaison: Robert Jnglin Wills, University of Washington, Seattle, WA, United States
Interdecadal Indian Ocean Basin Mode Driven by Interdecadal Pacific Oscillation:A Season-Dependent Growth Mechanism (486530)
Yu Huang, CAS Chinese Academy of Sciences, Institute of Atmospheric Physics, Beijng, China, Bo Wu, Institute of Atmos. Phys., Beijing, China, Tim Li, Univ Hawaii, Honolulu, HI, United States, Tianjun Zhou, Inst of Atmospheric Physics, Beijing, China and Bo Liu, China University of Geosciences Wuhan, Wuhan, China
New Insights into Natural and Anthropogenic Forcing of Global/Regional Climate Evolution (489785)
Tongwen Wu1, Aixue Hu2, Feng Gao Miss3, Jie Zhang Dr.4 and Gerald A Meehl2, (1)National Climate Center, Chinese Meteorological Administration, Beijing, China, (2)NCAR, Boulder, CO, United States, (3)China Meteorological Administration Training Centre, China Meteorological Administration, Beijing, China, (4)National Climate Center, China Meteorological Administration, Beijing, China
How to better define the Atlantic multi-decadal oscillation and its spatial pattern? (509036)
Mengrong Ding, LASG, IAP, Chinese Academy of Sciences, Beijing, China, Pengfei Lin, IAP,CAS, Beijing, China, Aixue Hu, NCAR, Boulder, CO, United States and Hailong Liu, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences, Beijing, 100029, China, Beijing, China
Tropical Oceanic Intraseasonal Variabilities associated with Central Indian Ocean Mode (529169)
Ze Meng1, Lei Zhou1, Raghuram G Murtugudde2, Qingxuan Yang3 and Kandaga Pujiana4, (1)Shanghai Jiao Tong University, Institute of Oceanography, Shanghai, China, (2)Univ of MD--ESSIC, College Park, MD, United States, (3)Ocean University of China, Qingdao, China, (4)NOAA/PMEL, Seattle, WA, United States
Variability, persistence and re-emergence of sea surface temperature anomalies between 1982-2018 (535610)
Claire Bulgin, National Centre for Earth Observation, Leicester, United Kingdom; University of Reading, Dept. of Meteorology, Reading, United Kingdom and Christopher J Merchant, University of Reading, Department of Meteorology, Reading, United Kingdom
Contributions of Internal Variability and External Forcing to the Recent Decadal Variations in Atlantic and Pacific SSTs (547231)
Aiguo Dai, University at Albany State University of New York, Depeartment of Atmospheric and Environmental Sciences, Albany, NY, United States, Wenjian Hua, Nanjing University of Information Science and Technology, School of Atmospheric Sciences, Nanjing, China and Minhua Qin, NUIST Nanjing University of Information Science and Technology, School of Atmospheric Sciences, Nanjing, China
The Role of Interannual ENSO Events in Decadal Timescale Transitions of the Interdecadal Pacific Oscillation (Invited) (560316)
Gerald Meehl1, Haiyan Teng1, Antonietta Capotondi2 and Aixue Hu3, (1)National Center for Atmospheric Research, Boulder, CO, United States, (2)University of Colorado, CIRES, Boulder, CO, United States, (3)NCAR, Boulder, CO, United States
Temporal and spatial characteristics of unforced climate variability in a global climate model ensemble (563060)
Bin Yao1, Yangyang Xu2,3, Andrew E Dessler4 and Chao Liu1, (1)Nanjing University of Information Science & Technology, Nanjing, China, (2)University of California San Diego, La Jolla, CA, United States, (3)Texas A&M University College Station, College Station, TX, United States, (4)Texas A&M Univ, College Station, TX, United States
Late Holocene multi-decadal variability in ocean-atmosphere dynamics in the western Arctic Ocean (588879)
Matt O'Regan1, Francesco Muschitiello2, Christian Stranne1, Johan Nilsson3, Agatha M De Boer4, Christof Pearce1 and Martin Jakobsson1, (1)Stockholm University, Department of Geological Sciences, Stockholm, Sweden, (2)University of Cambridge, Department of Geography, Cambridge, United Kingdom, (3)Stockholm University, Department of meteorology, Stockholm, Sweden, (4)Stockholm University, Stockholm, Sweden
Forced and Unforced Behavior of the Interhemispheric SST Contrast during the Instrumental Period (605784)
Andrew Ronald Friedman1, Gabriele C Hegerl1, Andrew P Schurer1, Shih-Yu Lee2, Wenwen Kong3, Wei Cheng4 and John Chiang5, (1)University of Edinburgh, Edinburgh, EH9, United Kingdom, (2)Research Center for Environmental Changes Academia Sinica, Taipei, Taiwan, (3)University of California Berkeley, Geography, Berkeley, CA, United States, (4)Univ of Washington, Seattle, WA, United States, (5)UC Berkeley, Geography, Berkeley, CA, United States
