“…o latitude [1,8]. In the β−plane approximation, exact nonlinear geophysical Gerstner-like solutions were constructed by Constantin [9,10,11], there have recently emerged a considerable literature on the geophysical water waves related to different physical scenarios, including the β−plane approximation [4,12,25,5,3,38], the f −plane approximation [17,26,6], and the large-scale ocean currents with distinctive and persistence patters [14,15]. Exact solutions for equatorial geophysical water waves incorporating a constant underlying mean current in the β−plane approximation were presented in [27,28], which are the first rate papers.…”