AI11B:
Toward an Improved Understanding of Indian Ocean Dynamics and Its Role in the Monsoon I

Session ID#: 93443

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 C Subramanian, University of Colorado Boulder, Atmospheric and Oceanic Sciences, Boulder, United States
Co-chairs:  Manikandan Mathur, Indian Institute of Technology Madras, 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 C Subramanian, University of Colorado Boulder, Atmospheric and Oceanic Sciences, Boulder, United States
Moderators:  Aneesh C Subramanian, University of Colorado Boulder, Boulder, CO, United States and Hemantha W Wijesekara, Naval Research Lab Stennis Space Center, Stennis Space Center, 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:

Monsoon Intra-seasonal oscillations in the Bay of Bengal (643539)
Amit Tandon, University of Massachusetts, Dartmouth, Mechanical Engineering, Dartmouth, MA, United States, Emily Shroyer, Oregon State University, Corvallis, OR, United States, Debasis Sengupta, Indian Institute of Science, Centre for Atmospheric and Oceanic Sciences, Bangalore, India, Hemantha W Wijesekera, Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, Harindra J.S. Fernando, University of Notre Dame, Notre Dame, IN, United States, Andrew J. Lucas, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Eric A D'Asaro, Applied Physics Lab, Univ of Washington, Seattle, WA, United States, J. Thomas Farrar, Woods Hole Oceanographic Inst, Department of Physical Oceanography, Woods Hole, MA, United States, Jennifer A MacKinnon, Scripps Institution of Oceanography, La Jolla, CA, United States and Amala Mahadevan, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
The 2018 Monsoon Onset from Ship-based Measurements across the Air-Sea Interface (655420)
Emily Shroyer, Oregon State University, Corvallis, OR, United States, Amit Tandon, University of Massachusetts, Dartmouth, Mechanical Engineering, Dartmouth, MA, United States, Debasis Sengupta, Indian Institute of Science, Centre for Atmospheric and Oceanic Sciences, Bangalore, India, Andrew J. Lucas, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Joe Fernando, University of Notre Dame, Notre Dame, IN, United States, J. Thomas Farrar, Woods Hole Oceanographic Inst, Department of Physical Oceanography, Woods Hole, MA, United States, Hemantha W Wijesekera, Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, Jennifer A MacKinnon, Scripps Institution of Oceanography, La Jolla, CA, United States, Eric A D'Asaro, Applied Physics Lab, Univ of Washington, Seattle, WA, United States and Amala Mahadevan, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
The Role of South Monsoon Current in the Air-Sea Interactions of Bay of Bengal (652443)
Harindra Joseph Fernando, University of Notre Dame, Department of Civil and Environmental Engineering and Earth Sciences, Notre Dame, United States, Annunziata Pirro, University of Notre Dame, Department of Civil Engineering, Environmental and Earth Sciences, Notre Dame, IN, United States, Hemantha W Wijesekera, 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 and S.U.P. Jinadasa, National Aquatic Resources Research and Development Agenc, Colombo, Sri Lanka
Collaborative observations of upper ocean circulation, air-sea interaction, and monsoon variability in the Bay of Bengal (643850)
Hemantha W Wijesekera1,2, Ewa Jarosz3, David W Wang2, Conrad A Luecke4, Tommy G Jensen5, Adam Rydbeck2, Maria K. Flatau6, Jerome Schmidt7, Jaynise Perez8, Iossif Lozovatsky9, Harindra J.S. Fernando9, Sinhalage Udaya Priyantha Jinadasa, Jagath Rajapakshapa11, Udeshika Wimalasari12, William Teague13 and Zack Hallock14, (1)John C. Stennis Space Center, Stennis Space Center, MS, United States, (2)U.S. Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, (3)Naval Research Lab Stennis Space Center, Stennis Space Center, MS, United States, (4)NRC Postdoctoral Fellow at Naval Research Laboratory, Stennis Space Center, MS, United States, (5)US Naval Research Laboratory, Ocean Sciences Division, Stennis Space Center, MS, United States, (6)Naval Research Laboratory, Monterey, CA, United States, (7)NRL, CA, United States, (8)University of Notre Dame, Department of Civil and Environmental Engineering and Earth Sciences, Notre Dame, United States, (9)University of Notre Dame, Notre Dame, IN, United States, (10)Ocean University, Colombo, Sri Lanka, (11)National Aquatic Research and Resorce Development Agency, Colombo, Sri Lanka, (12)NVision Solutions Inc, Diamondhead, United States, (13)NVision Solutions Inc., Diomondhead, MS, United States
Spatial variability of air-sea interaction in the Indian Summer Monsoon from multi-platform measurements (646944)
Andrew J. Lucas, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, J. Thomas Farrar, Woods Hole Oceanographic Inst, Department of Physical Oceanography, Woods Hole, MA, United States, Emily Shroyer, Oregon State Univ, Corvallis, OR, United States, Tamara Lillian Schlosser, Scripps Institution of Oceanography, Marine Physical Laboratory, La Jolla, CA, United States and Robert Pinkel, Univ California San Diego, La Jolla, CA, United States
BoBBLE (Bay of Bengal Boundary Layer Experiment): Impact of the Bay of Bengal on Monsoon Processes (645417)
Adrian John Matthews1, P. N. Vinaychandran2, P Amol3, Dariusz B. Baranowski4, Jenson George5, Karen J. Heywood6, Brian A. King7, Anoop Nayak5, C Neema8, Shrikant Pargaonkar8, Bastien Yves Queste9, Alejandra Sanchez-Franks7, Peter Sheehan6, V. Thushara10 and Benjamin Webber11, (1)University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom, (2)Indian Institute of Science, Centre for Atmospheric and Oceanic Sciences, Bangalore, India, (3)National Institute of Oceanography, Visakhapatnam, India, (4)Institute of Geophysics Polish Academy of Sciences, Warsaw, Poland, (5)Indian Institute of Science, Bangalore, India, (6)University of East Anglia, Norwich, United Kingdom, (7)National Oceanography Centre, Southampton, United Kingdom, (8)Indian Institute of Science, India, (9)University of East Anglia, Centre for Ocean and Atmospheric Sciences, Norwich, United Kingdom, (10)Indian Institute of Science, Bengaluru, India, (11)University of East Anglia, Norwich, NR4, United Kingdom
Modeling the Ocean Mixed Layer Response to Atmospheric Monsoon Forcing (648287)
Leah Johnson, Brown University, Providence, RI, United States, Baylor Fox-Kemper, Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States and Qing Li, Los Alamos National Laboratory, Los Alamos, NM, United States
Basin-scale Diapycnal Mixing Rates in the Bay of Bengal Inferred from Fresh water Balance (651166)
J Sree Lekha, Indian Institute of Science, Center for Atmospheric and Oceanic Sciences, Bangalore, India, Debasis Sengupta, Indian Institute of Science, Centre for Atmospheric and Oceanic Sciences, Bangalore, India, Emily Shroyer, Oregon State Univ, Corvallis, OR, United States and Amit Tandon, University of Massachusetts, Dartmouth, Mechanical Engineering, Dartmouth, MA, United States