FN Archimer Export Format
PT J
TI Enhanced Turbulence Associated with the Diurnal Jet in the Ocean Surface Boundary Layer
BT 
AF SUTHERLAND, Graig
   MARIE, Louis
   REVERDIN, Gilles
   CHRISTENSEN, Kai H.
   BROSTRTOM, Goran
   WARD, Brian
AS 1:1,2;2:3;3:4;4:5;5:6;6:2;
FF 1:;2:PDG-ODE-LOPS-OC;3:;4:;5:;6:;
C1 Univ Oslo, Dept Math, Postboks 1053 Blindern, N-0316 Oslo, Norway.
   Natl Univ Ireland, Sch Phys, Galway, Ireland.
   UBO, IRD, IFREMER, CNRS,Lab Phys Oceans, Plouzane, France.
   Univ Paris 06, Sorbonne Univ, LOCEAN Lab, CNRS,IRD,MNHN, Paris, France.
   Norwegian Meteorol Inst, Oslo, Norway.
   Univ Gothenburg, Dept Marine Sci, Gothenburg, Sweden.
C2 UNIV OSLO, NORWAY
   UNIV NATL IRELAND, IRELAND
   IFREMER, FRANCE
   UNIV PARIS 06, FRANCE
   NORWEGIAN METEOROL INST, NORWAY
   UNIV GOTHENBURG, SWEDEN
SI BREST
SE PDG-ODE-LOPS-OC
UM LOPS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 3.13
TC 40
UR https://archimer.ifremer.fr/doc/00358/46872/46758.pdf
LA English
DT Article
CR STRASSE
BO Thalassa
AB Detailed observations of the diurnal jet, a surface intensification of the wind-driven current associated with the diurnal cycle of sea surface temperature (SST), were obtained during August and September 2012 in the subtropical Atlantic. Adiurnal increase in SST of 0.2 degrees to 0.5 degrees C was observed, which corresponded to a diurnal jet of 0.15 m s(-1). The increase in near-surface stratification limits the vertical diffusion of the wind stress, which in turn increases the near-surface shear. While the stratification decreased the turbulent dissipation rate epsilon below the depth of the diurnal jet, there was an observed increase in epsilon within the diurnal jet. The diurnal jet was observed to increase the near-surface shear by a factor of 5, which coincided with enhanced values of epsilon. The diurnal evolution of the Richardson number, which is an indicator of shear instability, is less than 1, suggesting that shear instability may contribute to near-surface turbulence. While the increased stratification due to the diurnal heating limits the depth of the momentum flux due to the wind, shear instability provides an additional source of turbulence that interacts with the enhanced shear of the diurnal jet to increase epsilon within this shallow layer.
PY 2016
PD OCT
SO Journal Of Physical Oceanography
SN 0022-3670
PU Amer Meteorological Soc
VL 46
IS 10
UT 000386330000006
BP 3051
EP 3067
DI 10.1175/JPO-D-15-0172.1
ID 46872
ER

EF