Interannual variability of Kelvin wave propagation in the wave guides of the equatorial Indian Ocean, the coastal Bay of Bengal and the southeastern Arabian Sea during 1993–2006

Interannual variability of upwelling indices in the Southeastern Arabian Sea: A satellite based study

“…The wind induced mass transports associated with this coastal upwelling regime are comparatively less than the other regions elsewhere (Hastenrath and Greischer 1991). Propagation of coastal Kelvin wave from the Bay of Bengal and thus the radiation of Rossby waves and their dynamics in this region and their role in formation of Lakshadweep 'High' and 'Low', both in respect to sea level and SST and their role during the upwelling period is reflected in the works of Shankar and Shetye (1997), Shenoi et al (1999) and Rao et al (2010). The upwelling as a result of equator-ward alongshore winds lowers the sea surface temperature commences at the southern tip of India and propagates northward along the coast with the advancement of monsoon (Madhupratap et al 2001;Luis and Kawamura 2004;Smitha et al 2008).…”

Influence of El Niño and Indian Ocean Dipole on sea level variability in the Bay of Bengal

“…Compared to the other tropical oceans, the Indian Ocean is unique with land locked northern boundary. The Bay of Bengal (BoB) forming the northeastern part of the Indian Ocean, is mainly driven by the atmospheric forcing over the Equatorial Indian Ocean (EIO) and plays an important role in the seasonal monsoon rainfall over the Indian subcontinent (Yu et al, 1991;McCreary et al, 1993;Han and Webster, 2002;Iskandar et al, 2005;Yuan and Han, 2006;Francis and Gadgil, 2009;Oliver and Thompson, 2010;Rao et al, 2010).…”

“…In the presence of seasonally reversing monsoon, the EIO is subjected to distinct zonally oscillating alternate westerly and easterly winds and generate pairs of downwelling Kelvin waves (dKW) and upwelling Kelvin waves (uKW) respectively (Rao et al, 2010). The eastward flowing equatorially trapped Kelvin wave upon reaching the eastern boundary reflects part of its energy as northward propagating coastally trapped Kelvin wave, which traverses all along the coastal rim of BoB (Yu et al, 1991;Oliver and Thompson, 2010;Rao et al, 2010).…”

Observations of Currents Over the Deep Southern Bay of Bengal—With a Little Luck

“…Rao et al 2010;Yu and McPhaden, 2011;Girishkumar et al, 2013;Suresh et al, 2013;Vinayachandran et al, 2013). The equatorial thermocline anomaly, generated by an eastward-propagating Wyrtki jet (Wyrtki, 1973) in response to westerly wind bursts (WWBs), propagates eastward as a free Kelvin wave.…”