AI12B:
Toward an Improved Understanding of Indian Ocean Dynamics and Its Role in the Monsoon II

Session ID#: 93447

Session Description:
The weather and climate over the Indian Ocean are influenced strongly by the ocean circulation in the Indian Ocean. The seasonal reversal of monsoon winds and concurrent ocean currents, presence of strong barrier layers, the relatively deep thermocline along the equator and many other ocean-atmosphere features make the Indian Ocean unique. The strong oceanic variability in the region shapes the Indian Ocean’s very dynamic role in the intraseasonal, seasonal, and interannual variability of the monsoons, as well as its air-sea interactions. Recent field experiments in the Bay of Bengal, Arabian Sea, Tropical Indian Ocean and over the Maritime Continent as well as related modeling efforts, have advanced our understanding of the Indian Ocean circulation and its role in Monsoon Intraseasonal Oscillations (MISO). Nonetheless, significant gaps remain in understanding, observing, modeling, and predicting Indian Ocean variability and change across a range of timescales. Understanding and reliable prediction of the initiation, propagation, strength, and variability of Monsoon Intraseasonal Oscillations (MISO) in tropical and sub-tropical Indian Ocean-atmosphere constitute building blocks of monsoon forecasting, which is crucial for ensuring water-supply reliability, socioeconomic wellbeing, and safety of nearly one billion inhabitants of the Indian subcontinent. This session invites contributions based on observations, modeling, and theory in the Indian Ocean that focus on understanding and predicting the links between Indian Ocean variability and monsoon systems on (intra)seasonal to interannual timescales, interactions and exchanges between the Indian Ocean and other ocean basins, decadal variability and its prediction, response to climate change and extreme events.
Co-Sponsor(s):
  • PC - Past, Present and Future Climate
  • PL - Physical Oceanography: Mesoscale and Larger
Index Terms:

4504 Air/sea interactions [OCEANOGRAPHY: PHYSICAL]
4513 Decadal ocean variability [OCEANOGRAPHY: PHYSICAL]
4532 General circulation [OCEANOGRAPHY: PHYSICAL]
4572 Upper ocean and mixed layer processes [OCEANOGRAPHY: PHYSICAL]
Primary Chair:  Aneesh Subramanian, University of Colorado Boulder, Atmospheric and Oceanic Sciences, Boulder, United States
Co-chairs:  Manikandan Mathur, Indian Institute of Technology Madras, Geophysical Flows Lab and Department of Aerospace Engineering, Chennai, India, Hemantha W Wijesekera, Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States and Harindra Joseph Fernando, University of Notre Dame, Department of Civil and Environmental Engineering and Earth Sciences, Notre Dame, United States
Primary Liaison:  Aneesh Subramanian, Scripps Institution of Oceanography, Center for Western Weather and Water Extremes (CW3E), La Jolla, CA, United States
Moderators:  Aneesh Subramanian, University of Colorado Boulder, Boulder, United States and Harindra J.S. Fernando, University of Notre Dame, Notre Dame, United States
Student Paper Review Liaison:  Aneesh Subramanian, University of Colorado at Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States

Abstracts Submitted to this Session:

Upper Ocean Temperature and Salinity Variability and Compensation in the Arabian Sea (654346)
Ms. Jessica E Anderson, PhD, Woods Hole Oceanographic Institution, Woods Hole, United States, Steven R Jayne, WHOI, Department of Physical Oceanography, Woods Hole, MA, United States, Andrey Y. Shcherbina, Applied Physics Laboratory, Seattle, WA, United States, Craig Lee, Univ Washington, Seattle, United States and Luc Rainville, University of Washington, Seattle, United States
Variability of mixed layer turbulence in the Bay of Bengal during a MISO event: an LES study (648499)
Hieu T Pham, University of California San Diego, Mechanical and Aerospace Engineering, La Jolla, CA, United States, Sutanu Sarkar, Univ California at San Diego, La Jolla, CA, United States, Leah Johnson, Brown University, Providence, RI, United States, Qing Li, Los Alamos National Laboratory, Los Alamos, United States, Baylor Fox-Kemper, Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States and Peter P Sullivan, National Center for Atmospheric Research, Mesoscale Microscale Meteorology, Boulder, CO, United States
Air-sea Interactions During Monsoon Season in the Bay of Bengal (642575)
Jaynise Pérez Valentín, University of Notre Dame, Department of Civil and Environmental Engineering and Earth Sciences, Notre Dame, United States, Harindra J.S. Fernando, University of Notre Dame, Notre Dame, United States, Edward D Creegan, US Army Research Laboratory, White Sands Missile, NM, United States, Hemantha W Wijesekera, Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, G S Bhat, Indian Institute of Science, Bangalore, India and Debasis Sengupta, Indian Institute of Science, Centre for Atmospheric and Oceanic Sciences, Bangalore, India
Atmospheric Cold Pools in the Bay of Bengal: A Fuzzy Logic Approach (643744)
Jared Buckley, University of Massachusetts Dartmouth, Dartmouth, MA, United States and Amit Tandon, University of Massachusetts, Dartmouth, Mechanical Engineering, Dartmouth, United States
The Role of Salinity in Determining Southwest Monsoon Variability (637593)
Heather Leigh Roman-Stork, Global Science and Technology Inc, NOAA STAR, Greenbelt, United States and Subrahmanyam Bulusu, University of South Carolina Columbia, Columbia, SC, United States
Equatorial Indian Ocean Westward Jets: Intraseasonal Variability, and Impact on Salinity (639033)
Ebenezer S Nyadjro, University of New Orleans, New Orleans, LA, United States, Adam Rydbeck, U.S. Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, Tommy G Jensen, US Naval Research Laboratory, Ocean Sciences Division, Stennis Space Center, MS, United States, James G Richman, Naval Research Lab Stennis Space Center, Stennis Space Center, MS, United States and Jay F Shriver, Naval Research Laboratory, Stennis Space Center, Stennis Space Center, MS, United States
Rapid foundation SST Warming Captured by Alamo Floats during the Suppressed Phase of the MJO (642645)
Je-Yuan Hsu, Commonwealth Scientific and Industrial Research Organisation, Crawley, Australia; National Taiwan University, Institute of Oceanography, Taipei, Taiwan, Ming Feng, CSIRO, Environment, Crawley, Western Australia, Australia and Susan Wjiffels, CSIRO Hobart, Hobart, TAS, Australia