the indian ocean‘s role in ghg variability over india raghu murtugudde
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The Indian Ocean‘s role in GHG variability over India Raghu Murtugudde ESSIC-DAOS, University of Maryland College Park, MD 20742 Can we ignore the Indian Ocean while measuring the Greenhouse Gases over the Indian subcontinent?. Circulation schematic for Southwest Monsoon. Schott 2004. - PowerPoint PPT PresentationTRANSCRIPT
The Indian Ocean‘s role in GHG variability over India
Raghu Murtugudde
ESSIC-DAOS, University of Maryland
College Park, MD 20742
•Can we ignore the Indian Ocean while measuring the Greenhouse Gases over the Indian subcontinent?
Circulation schematic for Southwest Monsoon
Schott 2004
Circulation schematic for Northeast Monsoon
Schott 2004
deep
NL, 2000
November - April
May - Octobernot covered
Moorings
not deployed
WOCE sections, arrays
post WOCE
Surface drifter currents for both monsoon seasons
•180 WOCE drifters 1992-95
•350 TOGA/ENSO drifters since 1995
•WE CAN USE DRIFTERS TO MEASURE GHG FLUXES FROM THE OCEAN
Courtesy P. Niiler
SEC
SW Monsoon
NE monsoon
SECC
Net heat (Wm-2) and CO2 (mol/m2/yr) fluxes
over Indian Ocan
India obviously has its own season of wildfires but what about contributions from other regions even when India’s wildfires are at their minimum?
The proposed array May not capture the hotspots of interest for GHGs.
Indian Ocean Zonal mode ensemble pattern Wind stress and SST
It may or may not be a dipole at all but when the
eastern Indian Ocean cools, there are impacts on the
Indian Monsoons.
Courtesy H. Annamalai
Peak (SON)
Tropical cyclone days for Dec-Apr
Climatological mean of number of cyclone days (contours)difference between deep and shallow mixed layer (shading)
(Xie et al., 2002)