The Impacts of ENSO and IOD on the MSL of The Arabian Gulf and The Arabian Sea by Using Satellite Altimetry Data

*Atyaf Mohammed Abdul Mutalib  -  University of Basrah, Iraq
Sabah M. M. Ameen  -  University of Basrah, Iraq
Ali B. Mahmood  -  University of Basrah, Iraq
Received: 24 Jul 2020; Revised: 3 Sep 2020; Accepted: 7 Oct 2020; Published: 24 Nov 2020; Available online: 24 Nov 2020.
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The main objective for the current research is to determine the linear trends of the mean sea level (MSL) resulting from the influence of the Southern Oscillation of El Niño (ENSO) and the Indian Ocean dipole (IOD), which have increased in recent times due to increased global warming using satellite altimetry of MSL data. Statistical time series technique has been used. The standard ordinary univariate and bivariate linear regression method as well as Pearson correlation were used.  Linear trends for the positive phase of IOD were detected on mean sea level while no linear trends of ENSO were detected in the Arabian Gulf. On the other side, linear trends of the negative phases of IOD and ENSO were detected on mean sea level in the Arabian Sea over the period 1993-2013. It is most important for climate research to provide accurate predictions of sea level rise in the coming years and plan the activities to lessen the disasters before they happen.

Keywords: satellite altimetry data; ENSO; IOD; Arabian Gulf; Arabian Sea

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  1. Alawad, K.A., Al-Subhi, A.M., Alsaafani, M.A., Alraddadi, T.M., Ionita, M. & Lohmann, G. 2019. Large-Scale Mode Impacts on the Sea Level over the Red Sea and Gulf of Aden. Remote Sens., 11(19):p2224.
  2. Alothman, A., Bos, M., Fernandes, R. & Ayhan, M. 2014. Sea level rise in the north-western part of the Arabian Gulf. J. Geodyn., 81:105-110.
  3. BBC. 2019. Indian Ocean Dipole: What is it and why is it linked to floods and bushfires? [Online]. Pablo Uchoa and the BBC's Visual Journalism teams. Available: science-environment-50602971 [Accessed 2/2 2020]
  4. Beşel, C. & Kayıkcı, E.T. 2020. Investigation Of Black Sea Mean Sea Level Variability By Singular Spectrum Analysis. Int. J. Eng. Geosci., 5:33-41.
  5. Cai, W., Borlace, S., Lengaigne, M., Van Rensch, P., Collins, M., Vecchi, G., Timmermann, A., Santoso, A., Mcphaden, M. J. & Wu, L. 2014. Increasing frequency of extreme El Niño events due to greenhouse warming. Nat. Clim. Change, 4:111-116.
  6. Calafat, F., Chambers, D. & Tsimplis, M. 2014. On the ability of global sea level reconstructions to determine trends and variability. J. Geophys. Res. Oceans, 119:1572-1592
  8. Cazenave, A. & Cozannet, G.L. 2014. Sea level rise and its coastal impacts. Earth's Future, 2:15-34.
  9. Chakravorty, S., Chowdary, J. & Gnanaseelan, C. 2013. Spring asymmetric mode in the tropical Indian Ocean: role of El Niño and IOD. Clim. Dyn., 40:1467-1481.
  10. Church, J.A., Clark, P.U., Cazenave, A., Gregory, J.M., Jevrejeva, S., Levermann, A., Merrifield, M.A., Milne, G.A., Nerem, R.S. & Nunn, P.D. 2013. Sea level change. PM Cambridge University Press.
  11. Han, W., Meehl, G.A., Rajagopalan, B., Fasullo, J.T., Hu, A., Lin, J., Large, W.G., Wang, J.W., Quan, X.W. & Trenary, L.L. 2010. Patterns of Indian Ocean sea-level change in a warming climate. Nat. Geosci., 3:546-550.
  12. Han, W., Meehl, G. A., Stammer, D., Hu, A., Hamlington, B., Kenigson, J., Palanisamy, H. & Thompson, P. 2017. Spatial patterns of sea level variability associated with natural internal climate modes. Integrative study of the mean sea level and its components. Springer.
  13. Mahmood, A. 2016. The Interrelation Between the North Atlantic Oscillation (NAO) and Regulated River Discharge at the Baltic Sea Drainage Basin as well as Mean Sea Level at the Baltic Sea-North Sea Region. Ph. D. dissertation, University of Szczecin, Szczecin, Poland.
  14. Mirza, B., Iqbal, M. J. & Naz, S. 2019. Impact of Seasonal Low on Sea Level Rise. Int. J. Geosci., 10:29-38.
  15. Sandeep, S. & Ajayamohan, R. 2018. Modulation of winter precipitation dynamics over the Arabian Gulf by ENSO. J. Geophys. Res. Atmos., 123:198-210.
  16. Seneviratne, S., Nicholls, N., Easterling, D., Goodess, C., Kanae, S., Kossin, J., Luo, Y., Marengo, J., Mcinnes, K. & Rahimi, M. 2012. Changes in climate extremes and their impacts on the natural physical environment. Cambridge University Press d8-6nbt-s431
  17. Siddig, N. A., Al-Subhi, A. M. & Alsaafani, M. A. 2019. Tide and mean sea level trend in the west coast of the Arabian Gulf from tide gauges and multi-missions satellite altimeter. Oceanologia, 61, 401-411.
  18. Srinivasu, U., Ravichandran, M., Han, W., Sivareddy, S., Rahman, H., Li, Y. & Nayak, S. 2017. Causes for the reversal of North Indian Ocean decadal sea level trend in recent two decades. Clim. Dyn., 49:3887-3904.
  19. Star, N. N. 2020. Laboratory for Satellite Altimetry / Sea Level Rise [Online]. Available: [Accessed 8/6 2020]
  20. Thompson, P. R., Piecuch, C. G., Merrifield, M. A., Mccreary, J. P. & Firing, E. 2016. Forcing of recent decadal variability in the E quatorial and N orth I ndian O cean. J. Geophys. Res. Oceans., 121:6762-6778.

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