A099
The Madden-Julian Oscillation and Convectively Coupled Waves in the Tropics: Observations, Theory, Modeling, and Prediction
Session ID#: 250965
Session Description:
The Madden-Julian Oscillation (MJO) and convectively coupled tropical waves (CCTWs) serve as the dominant source of Earth system predictability on the subseasonal timescale and are known drivers of high-impact weather events across the globe. Despite notable progress in recent decades, many fundamental questions about the MJO and CCTWs remain unanswered, and they are poorly represented in many Earth system and weather prediction models. We solicit presentations of observational, theoretical, modeling, and predictability studies that target process-level understanding of the MJO and CCTWs and enhanced representation of them in weather and climate models. Topics include, but are not limited to:• Mechanism and predictability studies using innovative AI/ML methods and dynamical (e.g., global storm-resolving) models;• New observations of key processes;• Interactions with the ocean, land, and stratosphere;• Global impacts and interaction with the extratropics;• Development of hierarchical modeling framework and process-oriented diagnostics/metrics; and• Responses of the MJO and CCTWs to climate change.
Co-Sponsor(s):
Index Terms:
3371 Tropical convection [ATMOSPHERIC PROCESSES]
3373 Tropical dynamics [ATMOSPHERIC PROCESSES]
3374 Tropical meteorology [ATMOSPHERIC PROCESSES]
4504 Air/sea interactions [OCEANOGRAPHY: PHYSICAL]
Primary Convener: Daisuke Takasuka, Tohoku University, Sendai, Japan
Conveners: Stephanie A Henderson, University of Wisconsin Madison, Madison, United States, Fiaz Ahmed, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States and Daehyun Kim, Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea
Simulations of Convectively Coupled Kelvin Waves (CCKWs) With Three Different Cumulus Parameterization Schemes (1871243)
Sehyun Lee, Yonsei University, Seoul, Korea, Republic of (South), Sang-Hun Park, Yonsei University, Seoul, South Korea, Mu-Ting Chien, University of Washington, Atmospheric Sciences, Seattle, WA, United States and Daehyun Kim, Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea
A Multiscale Interaction Mechanism for the Observed QBO-MJO Connection (1882138)
Kai Huang, National Center for Atmospheric Research, Climate and Global Dynamics, Boulder, CO, United States, Chih-Chieh Chen, NCAR, Boulder, United States; National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, United States, Mitchell W Moncrieff, National Center for Atmospheric Research, Boulder, United States and Jadwiga Richter, U. S. National Science Foundation National Center for Atmospheric Research, Boulder, United States
On the initiation and impacts of the March 2023 MJO (1883172)
Yuntao Wei1, Mu Mu1 and Hong-Li Ren2, (1)Fudan University, Department of Atmospheric and Oceanic Sciences & Institute of Atmospheric Sciences, Shanghai, China, (2)Chinese Academy of Meteorological Sciences, Beijing, China
A Simple Intermediate Coupled MJO-ENSO Model: Multiscale Interactions and ENSO Complexity (1884621)
Yinling Zhang, University of Wisconsin Madison, Madison, WI, United States, Nan Chen, University of Wisconsin-Madison, Department of Mathematics, Madison, United States and Charlotte Moser, University of Wisconsin Madison, Madison, United States
Eastward Shift in Boreal Summer Intraseasonal Oscillation Amplifies Heatwave and Wildfire Risks over Larger Areas of North America (1892309)
Ziming Chen1, Sandro W. Lubis2, Jian Lu3, Chuan-Chieh Chang1, Huilin Huang4, Wenyu Zhou5, Bryce E Harrop6 and L. Ruby Leung1, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)PNNL, Richland, United States, (3)Ocean University of China, Qingdao, China, (4)University of California Los Angeles, Department of Geography, Los Angeles, United States, (5)Pacific Northwest National Laboratory, Richland, United States, (6)Pacific Northwest National Laboratory, Atmospheric, Climate, and Earth Sciences Division, Richland, WA, United States
Kelvin waves and the MJO control the day-to-day variability of tropical humid heat extremes (1908904)
Cathryn Ellen Birch1, Lawrence S Jackson2, Christopher Taylor3, Guillaume Chagnaud Dr3, Anistia Hidayat Ms4, John Marsham2 and Jack Law4, (1)University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom, (2)University of Leeds, Leeds, LS2, United Kingdom, (3)UK Centre for Ecology and Hydrology, Wallingford, United Kingdom, (4)University of Leeds, Leeds, United Kingdom
Assessment of the MJO’s Southward Detour in CMIP6 models (1909592)
Yumi Choi1, Daehyun Kang1 and Daehyun Kim2, (1)Korea Institute of Science and Technology, Center for Climate and Carbon Cycle Research, Seoul, South Korea, (2)Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea
Modal Interference Drives Madden-Julian Oscillation Evolution and Predictability (1934749)
David Marsico, CIRES, Boulder, CO, United States, John Albers, NOAA Physical Sciences Laboratory, Boulder, United States, Matthew Newman, University of Colorado at Boulder, Boulder, United States, Juliana Dias, NOAA, Boulder, United States, Maria Gehne, NOAA Boulder, Boulder, CO, United States, George N Kiladis, NOAA, Boulder, CO, United States, Emerson LaJoie, Climate Prediction Center College Park, College Park, MD, United States and Yan Wang, CIRES, Boulder, United States
Convectively Coupled Equatorial Waves in Machine‑Learning‑Based Weather Predictions (1956603)
Juliana Dias, NOAA Physical Sciences Laboratory, Boulder, United States, Maria Gehne, NOAA Boulder, Boulder, CO, United States and Brandon Wolding, Colorado State University, Atmospheric Science, Fort Collins, United States
Future changes in intra-seasonal North Atlantic tropical cyclone variability associated with the Madden-Julian Oscillation (1965356)
Chuan-Chieh Chang1, L. Ruby Leung1, Sandro W. Lubis2, Ziming Chen1, Karthik Balaguru3, Samson M Hagos1, Ming Zhao4, Kohei Yoshida5 and Hiroyuki Murakami6, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)PNNL, Richland, United States, (3)PNNL, Marine Sciences Laboratory, Seattle, United States, (4)NOAA/OAR/Geophysical Fluid Dynamics Laboratory, Princeton, United States, (5)MRI/JMA, Tsukuba, Japan, (6)NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, United States
Changes to the Madden-Julian Oscillation with Surface Temperature Warming in Aquaplanet Simulations (1977658)
Spencer Ressel, University of Washington Seattle Campus, Atmospheric and Climate Science, Seattle, United States, Daehyun Kim, Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea and Peter N Blossey, University of Washington, Department of Atmospheric and Climate Science, Seattle, United States
