A look under the surface of Jordan Pond
High-frequency data from the Jordan Pond buoy and weather station are used to understand recent and long-term trends in water quality. Take a look at some visualizations made with these data from the 2017 field season!
Figure 1. Thermal plot of Jordan Pond, Summer 2017.
From May to November, the temperature profile of Jordan Pond shows remarkable changes. Jordan Pond is a dimictic lake, which means it mixes twice a year, in the spring and in the fall. During the summer, the lake thermally stratifies as the surface waters warm. The top layer of warm water, called the epilimnion, is less dense than cooler, deeper water known as the hypolimnion. The zone of rapid temperature change between the epilimnion and hypolimnion is called the thermocline, or metalimnion.