Thermograph Network in the Gulf of St. Lawrence
The thermograph network program led by a scientific team from the Maurice Lamontagne Institute was started in 1993 with six monitoring stations. The main objective was to measure seawater surface temperatures in the Estuary and Gulf of St. Lawrence, and to maintain a database.
Today, the measurements are no longer limited to the surface temperature of the water: some stations are equipped with multi-instrument platforms that make it possible to measure oceanographic, optical and meteorological parameters. There are now some 25 stations in operation. About half of them are found on Canadian Coast Guard buoys, while the others are mainly on buoys of the Maurice Lamontagne Institute. The buoys are all launched and recovered by Canadian Coast Guard teams.
The water temperatures from the network are used to validate the hydrodynamic models, the satellite surface temperature images or to monitor certain commercial species such as the lobster.
A technical report has just been published. It focuses exclusively on the seawater temperature records with the goal of facilitating their use by identifying available data as well as missing data records during the period from 1993 to 2014. Tables and a figure show the valid data records for each station for every year. Several examples of physical oceanographic phenomena in the program's coastal waters were also presented.
Thermography network in the Gulf of St. Lawrence
Excerpt from the Canadian technical report of hydrography and ocean sciences
Bernard Pettigrew, Denis Gilbert and Rémi Desmarais