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The propagation of mesoscale temperature perturbations in the surface-layer from buoys during JASIN 1978
998
OLR (1986) 33 (12)
under the influence of a steady wind-driven flow is described. In the case of the baroclinic ocean, water depth and density stratification effects on the geostrophic balance solution are considered. Finally, a conservation equation is derived for the nonlinear model in which only the nonlinear potential flow and vertical mass transport are utilized. Shandong Coll. of Oceanol., Qingdao, People's Republic of China. (sir) 86:6818 Malvestuto, V., R. Purini and F.M. Mele, 1985. On the baroclinic instability of nonplanar flows. Nuovo Cim., (8C)6:937-954.
Different ocean models with one or two layers having constant static stability and supporting constant-shear flows, whose directions are allowed to change with depth, are examined in the framework of the linear nonzonal baroclinic stability theory and in the absence of the fl-effect. Results show that the presence of a nonplanar shear flow may have profound consequences on the stability character of the stationary geostrophic flow. In fact, it appears that the stability properties are strongly dependent on the propagation angle of the disturbance so that wave numbers which appear stable in the usual zonal theory may be unstable in such a nonzonal flow, and vice versa. Ist. di Fisica dell'Atmos, del CNR, Roma, Italy.
B. MARINE METEOROLOGY
B10. Apparatus and methods 86:6819 McBean, G.A., D.J. Phillips and J.R. Mathieson, 1986. An intercomparison of two rawinsonde systems. Atmos. Ocean, 24(1):42-5l. Atmos. Environ. Serv., Inst. of Ocean Sci., 9860 West Saanich Rd., Sidney, BC V8L 4B2, Canada.
B40. Area studies, surveys, weather 86:6820 Gube-Lenhardt, Marianne, 1986. Summary of the meteorological data of the Georg van Neumayer Station IAntaretical for the years 1981 and 1982. Repts polar Res. (Ber. Polarforsch.), 30:73pp.
Air temperature was measured late in summer at the corners of a ring triangle with legs of 3 and 6 km on anchored buoys in the Atlantic northwest of Ireland. Its coherences and phases were calculated for periods from 5 to 120 min. Values between 1.5 and 3.5 were obtained for the dimensionless decay parameter. The calculation of phases shows that the temperature perturbations propagate 1.4 times faster than the air particles near ground, indicating a propagation of the temperature fluctuations well above the Prandtl-layer where the measurements were performed. The assumption is confirmed by the propagation of clouds showing temporal structures which are highly correlated with the temperature perturbation. Karlsruhe, FRG.
BS0. Radiation B50. Common atmospheric properties ( t e m p e r a t u r e , h u m i d i t y , etc.)
86:6821 Fechner, Heinz and Gerhard Sardemann, 1985. The propagation of mesoscale temperature perturbations in the surface-layer from buoys during J A S I N 1978. Meteorologische Rdsch., 38(6): 171180. (In German, English abstract.)
86:6822 Siegel, D.A. and T.D. Dickey, 1986. Variability of net Iongwave radiation over the eastern North Pacific Ocean. J. geophys. Res, 91(C6):7657-7666. The net longwave radiative heat flux at the sea surface was measured for 22 days during the fall of 1982. The mean flux emitted from the sea surface was 52.0 W / m 2 with a variance of 802.6 W2/m 4. The
OLR (1986) 33 (12)
under the influence of a steady wind-driven flow is described. In the case of the baroclinic ocean, water depth and density stratification effects on the geostrophic balance solution are considered. Finally, a conservation equation is derived for the nonlinear model in which only the nonlinear potential flow and vertical mass transport are utilized. Shandong Coll. of Oceanol., Qingdao, People's Republic of China. (sir) 86:6818 Malvestuto, V., R. Purini and F.M. Mele, 1985. On the baroclinic instability of nonplanar flows. Nuovo Cim., (8C)6:937-954.
Different ocean models with one or two layers having constant static stability and supporting constant-shear flows, whose directions are allowed to change with depth, are examined in the framework of the linear nonzonal baroclinic stability theory and in the absence of the fl-effect. Results show that the presence of a nonplanar shear flow may have profound consequences on the stability character of the stationary geostrophic flow. In fact, it appears that the stability properties are strongly dependent on the propagation angle of the disturbance so that wave numbers which appear stable in the usual zonal theory may be unstable in such a nonzonal flow, and vice versa. Ist. di Fisica dell'Atmos, del CNR, Roma, Italy.
B. MARINE METEOROLOGY
B10. Apparatus and methods 86:6819 McBean, G.A., D.J. Phillips and J.R. Mathieson, 1986. An intercomparison of two rawinsonde systems. Atmos. Ocean, 24(1):42-5l. Atmos. Environ. Serv., Inst. of Ocean Sci., 9860 West Saanich Rd., Sidney, BC V8L 4B2, Canada.
B40. Area studies, surveys, weather 86:6820 Gube-Lenhardt, Marianne, 1986. Summary of the meteorological data of the Georg van Neumayer Station IAntaretical for the years 1981 and 1982. Repts polar Res. (Ber. Polarforsch.), 30:73pp.
Air temperature was measured late in summer at the corners of a ring triangle with legs of 3 and 6 km on anchored buoys in the Atlantic northwest of Ireland. Its coherences and phases were calculated for periods from 5 to 120 min. Values between 1.5 and 3.5 were obtained for the dimensionless decay parameter. The calculation of phases shows that the temperature perturbations propagate 1.4 times faster than the air particles near ground, indicating a propagation of the temperature fluctuations well above the Prandtl-layer where the measurements were performed. The assumption is confirmed by the propagation of clouds showing temporal structures which are highly correlated with the temperature perturbation. Karlsruhe, FRG.
BS0. Radiation B50. Common atmospheric properties ( t e m p e r a t u r e , h u m i d i t y , etc.)
86:6821 Fechner, Heinz and Gerhard Sardemann, 1985. The propagation of mesoscale temperature perturbations in the surface-layer from buoys during J A S I N 1978. Meteorologische Rdsch., 38(6): 171180. (In German, English abstract.)
86:6822 Siegel, D.A. and T.D. Dickey, 1986. Variability of net Iongwave radiation over the eastern North Pacific Ocean. J. geophys. Res, 91(C6):7657-7666. The net longwave radiative heat flux at the sea surface was measured for 22 days during the fall of 1982. The mean flux emitted from the sea surface was 52.0 W / m 2 with a variance of 802.6 W2/m 4. The