The document contains two graphs of surface water temperatures along the Pacific Ocean equator from December 1997 and December 1998. It asks the reader to draw isotherms for several temperatures on each graph and identify the longitude where warm water deeper than 26C is deepest below the surface. Based on the locations identified, it then asks which year was an El Niño year and which was a La Niña year.

1. 1. Each of the attached two eraphs (December 1997 and December 1938) represent surface
water temperatures alone the equator of the Pacific Ocean. Complete the following: - On each
graph, draw in isotherma for the following temperatures: 26C,23C. 20,17C,14C,11C and 9C. Label
each isotherm along the right margin of the each graph. - For each graph, at what longitude
(labelied along the bottom of the graph) is warm water (>267) the deepent below the surface of the
Pacif Ocean (write the depth in the spaces belowi? lelet and bbel each point on the mag. Keep in
mind that these temperature readings are takin along the equator. December 1997 December
1998 - Based on the two plothed locations of the depest warm water, which year was an El Nido
yoar and which ycar was a La Nilla your?