Air-sea interactions and deep convection in the Labrador Sea
Bramson, Laura S.
MetadataShow full item record
Deep convection in the oceans, particularly at high latitudes, plays an important role in the climate systems of the world's oceans and atmosphere. This study was conducted to examine atmospheric forcing effects on deep convection in the Labrador Sea. The Naval Postgraduate School one dimensional ocean mixed layer model was applied to the Labrador Sea from February 12 to March 10, 1997. The model was initialized and forced with oceanographic and atmospheric data collected onboard the R/V Knorr during the first field program of the Labrador Sea Deep Convection Experiment. An ocean mixed layer depth close to 1300m was predicted and verified using the observed data. A sensitivity study was conducted using deviations from observations as input to determine how variations in atmospheric forcing could lead to the observed and even deepened ocean mixed layer. Observed Conductivity, temperature and depth (CTD) data were used to verify the model's spatial and temporal predictions of mixed layer temperature, salinity and depth. Model predicted mixed layer depths were usually slightly deeper than those observed. The final model output predicted temperature rather accurately, but model predicted salinity values were consistently low. A variety of sensitivity studies gave new insight to the individual influences of surface fluxes, momentum stresses, precipitation, salinity and individual storm variations to the mixed layer temperature, salinity and depth of the Labrador Sea.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Freshwater export from the Arctic Ocean and its downstream effect on Labrador Sea deep convection in a high-resolution numerical model McGeehan, Timothy P. (Monterey, California. Naval Postgraduate School, 2010-12);The Labrador Sea is one of the only known locations of deep open ocean convection, a process determined to play a significant role in regulating global thermohaline circulation and climate. The main hypothesis of this ...
Arata, Bernard (Monterey, California. Naval Postgraduate School, 1994-09);It is now understood that deep convection in the ocean plays a dominant role in determining the climate of the world's oceans. Recent theoretical advances in explaining oceanic convection need to be tested by real observations. ...
The effects of a prescribed salinity field on a 10-level primitive equation ocean circulation model Barbor, Kenneth Eicher (Monterey, California. Naval Postgraduate School, 1978-12);A prescribed salinity field is inserted into a 10-level primitive equation ocean circulation model. The model has been developed and is being improved in order to study large-scale thermal anomalies observed in the Central ...