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Irminger Sea Meteorological Buoy

In summer 2004 a long-term oceanographic mooring will be deployed in the southwest Irminger Sea to measure the formation of subpolar mode water. This is one of two sites in the north Atlantic (the other being the Labrador Sea) where intermediate mode water is believed to be formed; yet to date deep convection has not been observed at this location (only inferred). In an effort to observe convection and document that the Irminger Sea is a site of significant mode water formation, the ULTRAMOOR mooring will be deployed for 5 years (Nelson Hogg, PI). This mooring will measure temperature, salinity, and currents in the upper 2000m of the water column, transmitting its data to shore on a regular basis throughout the deployment period.

The one “hole” in this measurement program is the lack of in-situ meteorological data to accompany the oceanographic timeseries. In fact, since the days of the old weather stations (including Station A in the Irminger Sea) there have been no concurrent ocean/atmosphere timeseries in the subpolar North Atlantic. We are attempting to make the ULTRAMOOR site the first “modern-day ocean station” by deploying a meteorological buoy next to the oceanographic mooring. As such I have
committed $25K from my existing Irminger Sea field program for mooring materials and construction of the platform. We are requesting an additional $27,649 from OCCI to purchase the meteorological instrumentation.This will allow acquisition of wind speed, velocity, air temperature, and relative humidity to a central data logger and the transmission of the data to shore in near real-time.

Originally published: January 1, 2004