Upper-Ocean Heat Content and Subsurface Fluxes as Controls on Active-Break Cycles during the Indian Ocean Monsoon
Abstract
The proposed work aims to continue and expand long-term time series of ocean mixing in the Bay of Bengal, building on previous effor"ts funded by ONR through the Air-Sea Interactions Regional Initiative (ASIRI) and the Littoral Air-Sea Processes/Dynamics of the Madden-Julian Oscillation (LASP/DYNAMO) Initiative. This work will also contribute existing and a newly-developed equipment to short-te"rm, ship-based activities as part of the primary field year of the DRI. Specifically, the proposed efforts will support multi-year t""urbulence measurements (_pods) on equatorial and Bay of Bengal RAMA moorings located at 0, 67E; 0, 80E; 0, 90E; 4N, 90E; 8N, 90E; 12""N, 90E; 15N, 90E,_ short-term, high resolution upper ocean temperature, salinity, and microstructure from a ship-based towed board"" (leveraged from PISTON), sea snake thermistor (leveraged from DYNAMO), and newly-developed drifter (in collaboration with L. Centur""ioni,Scripps),_ analysis of ancillary atmospheric and oceanic sensors from RAMA moorings, and, integration of reanalysis data and re"sults from previous xpod deployments sup-ported through LASP/DYNAMO and ASIRI. By accomplishing the above experimental objectives we will work towards our ultimategoal of better understanding the ocean s role in modulating active and break cycles of the monsoon f"or improved forecasting. In particular, we seek to identify the time scales and lags over which heat is exchanged between the ocean"" and the atmosphere, and determine the role that salinity stratification may play in determining the details of heat exchange betwee"n these atmosphere and ocean.The proposed multi-year time series that span from the equatorial region through the Bay of Bengal will provide time series needed for evaluation of the ocean response to multiple monsoon intraseasonal oscillations. Our work will expan"d and complement short, intensive drifting and/or ship-based efforts by providing seasonal context for short-term observations.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 05, 2017
- Source ID
- N000141712472
Entities
People
- E. Shroyer
Organizations
- Office of Naval Research
- Oregon State University
- United States Navy