You may look at the following web page:

http://www.bom.gov.au/climate/enso/#tabs=Indian-Ocean

http://www.bom.gov.au/climate/enso/#tabs=Indian-Ocean

Dear,

     You can find your solution from following link:

http://www.ldeo.columbia.edu/res/div/ocp/pub/cane/Ihara_etal2008a.pdf

This link may help you.

http://www.jamstec.go.jp/frcgc/research/d1/iod/DATA/dmi.monthly.ascii

Hello

You can download the time series here:

http://www.jamstec.go.jp/frsgc/research/d1/iod/iod/dipole_mode_index.html

Other indexes are also available on NOAA website:

http://www.esrl.noaa.gov/psd/data/climateindices/list/

Dear all,

Thank you for your information.

regards,

aida

How can I get the Indian Ocean Dipole data from 2000-2016?

https://www.esrl.noaa.gov/psd/gcos_wgsp/Timeseries/DMI/

Aida Sartimbul , Victor Nnamdi Dike , Md. Jalal Uddin , Wilton Aguiar , Anindita Patra , Ansar Khan , Domingo Rosales

You can find more information about IOD from my web-page

http://enformtk.u-aizu.ac.jp

A strong IOD is happening right now. I will putting up and updating DMI time series soon.

Thanks for sharing link Saji Hameed .

You can find the DMI dataset from 1982 here https://stateoftheocean.osmc.noaa.gov/ .

Not only the DMI, they also provide indices for ENSO as well, just in case you want to improve your research by analysing the ENSO's effects.

How can annual IOD index be calculated? All the data above is monthly basis

Take the seasonal average for Sep-Oct-Nov and use it as an annual index.