Air-Sea Interaction Research Initiatives ASIRI-OMM (with India) ASIRI-EBOB (with Sri Lanka)

The role of the Bay of Bengal for Monsoon Prediction

Amit Tandon, UMass Dartmouth on behalf of the ASIRI PIs ONR Review Chicago Sept 2013

χpods in ASIRI

Courtesy: Moum / Shroyer ASIRI Results from the first multi-year ocean • turbulence measurements when surface heat flux (red line) > • subsurface turbulence heat flux (blue line)

sea surface heats

when surface heat flux < subsurface turbulence heat flux

sea surface cools

Thus explaining seasonal cooling of the Pacific equatorial cold tongue despite continual annual heating by atmosphere

ASIRI Objective

quantify monsoon-induced subsurface heat, salt, momentum fluxes from long time series measurements Moum, Perlin, Nash & McPhaden, 2013 (Nature)

Planned ASIRI Deployments

10 χpods on NRL EBoB moorings in Southern BoB / December 2013 single χpods on RAMA moorings (15 m) 12N and 15N, 90E / November 2013

χpods on WHOI mooring

wave period profiling of upper ocean

Title Color

Courtesy: PI scientist ASIRI

• Science 1

Measurements

ASIRI