A004
Advances in understanding and modeling of the QBO and its impacts
Session ID#: 159067
Session Description:
The quasi-biennial oscillation (QBO) is the dominant mode of tropical variability in the lower to middle stratosphere. The QBO affects several phenomena outside the tropical stratosphere including the strength of the stratospheric polar vortex, constituent transport, the North Atlantic Oscillation, and the Madden-Julian Oscillation. The QBO phase is potentially predictable up to years in advance, implying widespread forecasting benefits if its impacts can be accurately simulated. However, Earth system models still have difficulties accurately capturing the oscillation itself, and simulated teleconnections are often too weak or non-existent. We invite here studies on all aspects of the QBO, including: understanding of its forcing mechanisms, improvements to its representation in global models, and simulation and understanding of its impacts (teleconnections) especially for surface weather and climate.
Index Terms:
3334 Middle atmosphere dynamics [ATMOSPHERIC PROCESSES]
3337 Global climate models [ATMOSPHERIC PROCESSES]
3362 Stratosphere/troposphere interactions [ATMOSPHERIC PROCESSES]
3363 Stratospheric dynamics [ATMOSPHERIC PROCESSES]
Primary Convener: Jadwiga Richter, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States and James anstey
Conveners: James Anstey, Environment Canada, Canadian Centre for Climate Modelling and Analysis, Victoria, Canada, Yoshio Kawatani, JAMSTEC, Yokohama, Japan, Scott M Osprey, Oxford University, Department of Physics, AOPP, Oxford, United Kingdom and James anstey
Captured QBO-MJO Connection in a Subseasonal Prediction System (1050809)
Kai Huang, George Mason University Fairfax, Fairfax, VA, United States, Jadwiga Richter, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States and Kathleen Pegion, George Mason University, Fairfax, VA, United States
Seasonality of the QBO Impact on Equatorial Clouds (1072968)
Aodhan John Sweeney, University of Washington Seattle Campus, Atmospheric Science, Seattle, WA, United States and Qiang Fu, University of Washington, Atmospheric Sciences, Seattle, WA, United States
Method for Determining the Angular Momentum Fluxes that Drive the QBO (1127861)
Ann-Casey Hughes, Fort Collins, Colorado, UNITED STATES, Elias Flicker, Saint Cloud State University, Atmospheric and Hydrologic Sciences, St Cloud, United States and David A Randall, Colorado State University, Fort Collins, CO, United States
Influence of Geomagnetic Activity on the Northern Atlantic Oscillations (NAO) (1140027)
Jayashree Bulusu1, Aditi Upadhyay2, Chinmaya Nayak3, Geeta Vichare3 and A P Dimri3, (1)IIG, Navi Mumbai, India, (2)Indian Institute of Geomagnetism, Mumbai, MAHARASHTRA, India, (3)Indian Institute of Geomagnetism, Navi Mumbai, India
Longitudinal Variations of Tropical Winds in the UTLS during the 2019/2020 QBO Disruption in Aeolus Doppler Wind Lidar Measurements (1146430)
Timothy Banyard1, Corwin Wright2, Neil Hindley2, Scott M Osprey3 and Gemma Halloran4, (1)University of Bath, Centre for Space, Atmospheric and Oceanic Science, Bath, BA2, United Kingdom, (2)University of Bath, Centre for Space, Atmospheric and Oceanic Science, Bath, United Kingdom, (3)Oxford University, Department of Physics, AOPP, Oxford, United Kingdom, (4)Met Office, Exeter, United Kingdom
Early indicators of SSW events in the tropical stratopause (1179432)
Neelakantan Koushik, Clemson University, Department of Physics and Astronomy, Clemson, SC, United States, Kishore K Kumar, Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram,Kerala, India and Pramitha M, Indian Institute of Science Education and Research, Thiruvananthapuram, India
Tropical tropopause layer temperature, water vapor, and wave activity during QBO disruptions (1179545)
Lan Luan, Indiana University Bloomington, Bloomington, IN, United States, Paul W. Staten, Indiana University Bloomington, Earth and Atmospheric Sciences, Bloomington, IN, United States, William John Randel, National Center for Atmospheric Research, Boulder, CO, United States and Ying-Hwa Kuo, University Corporation for Atmospheric Research, Boulder, CO, United States
QBO and ENSO Effects on the Mean Meridional Circulation, Polar Vortex, Subtropical Westerly Jets, and Wave Patterns During Boreal Winter (1196133)
Matthew Hitchman, University of Wisconsin Madison, Madison, WI, United States, Vinay Kumar, Rajdhani College, University of Delhi, Delhi, India and Shigeo Yoden, Kyoto University, Kyoto, Japan
