ESSO - Indian National Centre for Ocean Information Services
(An Autonomous Body under the Ministry of Earth Sciences, Govt. of India)
Status Of IOD
Indian Ocean Dipole Index based on INCOIS-GODAS SST analysis and Monthly climatology of OISST (Reynolds sst;constructed using 1981-2010 data).
Figure Indian Ocean Dipole mode Index (DMI). The DMI is defined as the difference between the SST anomalies (ºC) of Western (10ºS-10ºN & 50ºE-70ºE) and Eastern (10ºS-0ºN & 90ºE-110ºE) Equatorial Indian Ocean regions (WEST-EAST).
SST and SST anomalies over different regions of IOD for the last 12 months.
Figure Depth-longitude section of the (10ºS-0ºN) region averaged temperature (ºC) for the latest month for the Indian Ocean longitudes.The continuous black line represents the mixed layer depth, and the dashed black line indicates thermocline depth (20oC isotherm).
Figure Depth-longitude section of the (10ºS-0ºN) region averaged temperature (ºC) anomalies for the latest month for the Indian Ocean longitudes. Anomaly is computed with respect to WOA09 monthly climatology.The continuous black line represents the mixed layer depth, and the dashed black line indicates thermocline depth (20oC isotherm).