Dipole Mode Index (DMI) Monthly Time-series

Describes SST gradient in Indian ocean.

sample plot
Correlation of annual DMI time-series with Annual SST from the HadISST1.1 SST dataset for 1870-2021. The east-west gradient is illustrated
sample plot
WRIT TS
Description
    Intensity of the IOD is represented by anomalous SST gradient between the western equatorial Indian Ocean (50E-70E and 10S-10N) and the south eastern equatorial Indian Ocean (90E-110E and 10S-0N). This gradient is named as Dipole Mode Index (DMI). When the DMI is positive then, the phenomenon is referred to as the positive IOD and when it is negative, it is referred as the negative IOD.
Temporal Coverage
  • Monthly values: 1870/01 to near present
  • Update Status: Monthly
Data Notes
    Units: degC
Source, citation and related Information.
Related Time-series
    None
Links
Original Source
Time-series source dataset(s)
Citation
  • Possible impacts of Indian Ocean Dipole mode events on global climate. Authors: Saji, NH;Yamagata, T, CLIMATE RES, 25 (2): 151-169 DEC 5 2003.M
References
  • Possible impacts of Indian Ocean Dipole mode events on global climate. Authors: Saji, NH;Yamagata, T, CLIMATE RES, 25 (2): 151-169 DEC 5 2003.M