Publication Date:
2015-10-28
Description:
Indian Ocean Dipole modulated wave climate of eastern Arabian Sea Ocean Science Discussions, 12, 2473-2496, 2015 Author(s): T. R. Anoop, V. Sanil Kumar, P. R. Shanas, G. Johnson, and M. M. Amrutha Intrinsic modes of variability have a significant role in driving climatic oscillations in the ocean. In this paper, we investigate the influence of inter-annual variability, the Indian Ocean Dipole (IOD), on the wave climate of the eastern Arabian Sea (AS). Using measured, modeled and reanalysis wave data and reanalysis wind data, we show that the IOD plays a major role in the variability of wave climate of the study region due to the IOD induced changes in equatorial sea surface temperature and sea level pressure. Inter-annual variability in the wave climate over the eastern AS during the IOD is due to the modification of winds from the northern AS. The change in wind field over the AS due to IOD influences the generation or dissipation of wave field and hence causes the decrease in northwest short period waves during positive IOD and increase during negative IOD.
Print ISSN:
1812-0806
Electronic ISSN:
1812-0822
Topics:
Geosciences
