Giving 40 points] 2. cold water currents tend to have a cooling effect on the continental coastlines that they border, while warm water currents tend to have a warming affect. a. look at the pattern of the currents in the northern hemisphere and describe the effect the currents have on temperature of the coastal areas they border. b. look at the pattern of the currents in the southern hemisphere and describe the effect the currents have on the temperature of the coastal areas they border.