Physics
Scientific paper
Feb 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012georl..3903603j&link_type=abstract
Geophysical Research Letters, Volume 39, Issue 3, CiteID L03603
Physics
Cryosphere: Sea Ice (4540), Global Change: Oceans (1616, 3305, 4215, 4513), Oceanography: Physical: Ice Mechanics And Air/Sea/Ice Exchange Processes (0700, 0750, 0752, 0754), Oceanography: Physical: Upper Ocean And Mixed Layer Processes
Scientific paper
Recent warming and freshening of the Canada Basin has led to the year-round storage of solar radiation as the near-surface temperature maximum (NSTM). Using year-round ocean (from ice tethered profilers and autonomous ocean flux buoys), sea-ice (from ice mass balance buoys), and atmosphere (from NCEP/NCAR reanalysis) data from 2005-2010, we find that heat from the NSTM is entrained into the surface mixed layer (SML) during winter. Entrainment can only occur when the base of the SML reaches the top of the NSTM. If this condition is met, the surface forcing and stratification together determine whether the SML deepens into the NSTM. Heat transfer occurs by diffusion or by the erosion of the summer halocline. The average temperature of the SML warmed by as much as 0.06°C during storm events. Solar radiation began warming the SML about 1 month early during the winter of 2007-2008 and this can be explained by thin sea ice.
Carmack Eddy C.
Jackson Jennifer M.
Williams William J.
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