James C. Sadler

James Calvin Sadler (February 9, 1920 – September 2, 2005) was an American meteorologist, and a professor in tropical meteorology at the University of Hawaii, where he taught for 22 years.

He graduated with a civil engineering degree from the Tennessee Polytechnic Institute in 1941, receiving a meteorology certificate from the Massachusetts Institute of Technology in 1942, and later in 1947 earning a master's degree in meteorology from the University of California, Berkeley.

[1] He spent a number of years in the U.S. Air Force, where he made some important contributions towards satellite observations and tropical meteorology.

Using charts of mean 200-hectopascal circulation for July through August to locate the circumpolar troughs and ridges, he observed that there is a trough line extending over the eastern and central North Pacific and another one extending over the North Atlantic.

According to Tom Schroeder, director of the Joint Institute for Marine and Atmospheric Research, "He was one of the foremost meteorologists of his time, and one of the founders of tropical meteorology as a discipline.