Jenifer Clark’s Gulfstream Chart
Clark, Jenifer
1997

Chart called Jenifer Clark's Gulf Stream shows the temperatures of the surface waters in the Gulf Stream and adjacent waters. Two hundred years after Franklin began recording the temperatures, followed by his grand nephew Jonathan Williams, we are able to see satellite images of the temperatures and how they change. We can also see the colder arctic current as it contributes to the cool countercurrent which flows south between the main axis of the Gulf Stream and the eastern shore of North America, but nowhere near as strong as the Gulf Stream's north flow. It shows the warmer clockwise rotating eddies as opposed to the counter-clockwise cold eddies.

Jenifer Clark worked for 26 years for NOAA (National Oceanic and Atmospheric Association) as a satellite oceanographer producing Gulf Stream charts. In 1996, she formed her own company and began producing charts on demand for mariners and particularly sailors who were planning to participate in a Bermuda Race. By avoiding the eddies they could better predict their speed and direction.