Cyclones and depressions over the Indian seas in 1983

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1004 B. Marine Meteorology OLR (1985) 32 (12) B220. Waves 85:6982 Dorman, C.E., 1985. Evidence of Kelvin waves in California's marine layer and related eddy gen- eration. Mon. Weath. Rev., 113(5):827-839. The marine layer is lifted over the central coast by a weak cyclonic circulation. This 'bump,' initially 850 m high, moves to the north along the coast at 6 m s The undisturbed layer depth is 100-200 m thick. Winds under the raised layer are southerly. Surface pressure gradient alongshore is closely related to marine layer depth. The surface wind shifts when the leading and trailing edges of the wave pass. North- erly wave progression ceases at the sharp bend formed by Cape Mendocino, and a cyclonic vortex is formed in the marine layer off Point Arena. Dept. of Geol. Sci., San Diego State Univ., San Diego, CA 92182, USA. B280. Storms, disturbances, cyclones, etc. 85:6983 Hanson, H.P. and Baosen Long, 1985. Climatology of cyelogenesis over the East China Sea. Mon. Weath. Rev., 113(5):697-707. This paper presents a climatological analysis of cyclogenesis for the period 1899-1962 based on U.S. Weather Bureau historical weather maps. The averaged seasonal variability is discussed in some detail with comparisons to SST variability, revealing that the meridional SST gradient across the East China Sea plays a significant role. In contrast, wind speed, air-sea temperature difference and averaged heat fluxes show little relationship to cyclogenesis, suggesting that the surface baroclinicity associated with this temperature gradient triggers baroclinic instability on the subtropical jet stream as it enters and merges with the Aleutian Low to the east. Interannual variability of frequency of storm for- mation is linked to variations in the surface pressure at Darwin, Australia and, by inference, to the Southern Oscillation, apparently a manifestation of the West Pacific teleconnection. CIRES, Univ. of Colorado, NOAA, Boulder, CO 80309-0449, USA. 85:6984 Ramasastry, A.A., A.K. Chaudhury and N.C. Biswas, 1985. Cyclones and depressions over the Indian seas in 1983. Mausam, 36(1): 1-6. Meteorol. Office, Pune, India. B320. Particulates (dust, aerosols, etc.) 85:6985 Clarke, A.D. and R.J. Charlson, t985. Radiative properties of the background aerosol: absorption component of extinction. Science, 229(4710): 263-265. Environ. Engrg. and Sci. Pros., Univ_ of Washington, Seattle, WA 98195, USA. 85:6986 Salazar, S. and J.L. Bravo, 1983. [Principal cations soluble in water: K, Ca, and Mg in atmospheric aerosols in the NE equatorial Pacific.] Geof. Int., 22(2):145-155. (In Spanish, English abstract.) Inst. de Geofisica, UNAM, Mexico. B380. Forecasting 85:6987 Danard, Maurice, 1985. On the use of satellite estimates of precipitation in initial analyses for numerical weather prediction. A tmos. Ocean, 23(1):23-42. Atmos. Dynamics Corp., Wood- ridge Place, R.R. 7, Victoria, BC, Canada. 85:6988 van den Dool, H.M. and J.L. Nap, 1985. Short and long range air temperature forecasts near an ocean. Mon. Weath. Rev., 113(5):878-887. Dept. of Meteorol., Univ. of Maryland, College Park. MD 20742, USA. B450. Miscellaneous 85:6989 Andreas, E.L., 1985. Heat and moisture advection over Antarctic sea ice. Mon. Weath. Rev.. 113(5): 736-746. Weddell Sea spring surface-level temperature and humidity were relatively high, and both were positively correlated with the northerly component of the 850 mb wind vector as far as 600 km from the ice edge. Since even at its maximum extent, at least 60% of the Antarctic ice pack is within 600 km of the open ocean, long-range atmospheric transport of heat and moisture from the ocean must play a key part in Antarctic sea ice heat and mass budgets. In spring, the total turbulent surface heat loss can be 100 W m -2 greater under southerly winds than under northerly ones. U.S. Army Cold Regions Res. and Engrg. Lab., Hanover, NH 03755, USA.

Transcript of Cyclones and depressions over the Indian seas in 1983

Page 1: Cyclones and depressions over the Indian seas in 1983

1004 B. Marine Meteorology OLR (1985) 32 (12)

B220. Waves

85:6982 Dorman, C.E., 1985. Evidence of Kelvin waves in

California's marine layer and related eddy gen- eration. Mon. Weath. Rev., 113(5):827-839.

The marine layer is lifted over the central coast by a weak cyclonic circulation. This 'bump,' initially 850 m high, moves to the north along the coast at 6 m s The undisturbed layer depth is 100-200 m thick. Winds under the raised layer are southerly. Surface pressure gradient alongshore is closely related to marine layer depth. The surface wind shifts when the leading and trailing edges of the wave pass. North- erly wave progression ceases at the sharp bend formed by Cape Mendocino, and a cyclonic vortex is formed in the marine layer off Point Arena. Dept. of Geol. Sci., San Diego State Univ., San Diego, CA 92182, USA.

B280. Storms, disturbances, cyclones, etc.

85:6983 Hanson, H.P. and Baosen Long, 1985. Climatology

of cyelogenesis over the East China Sea. Mon. Weath. Rev., 113(5):697-707.

This paper presents a climatological analysis of cyclogenesis for the period 1899-1962 based on U.S. Weather Bureau historical weather maps. The averaged seasonal variability is discussed in some detail with comparisons to SST variability, revealing that the meridional SST gradient across the East China Sea plays a significant role. In contrast, wind speed, air-sea temperature difference and averaged heat fluxes show little relationship to cyclogenesis, suggesting that the surface baroclinicity associated with this temperature gradient triggers baroclinic instability on the subtropical jet stream as it enters and merges with the Aleutian Low to the east. Interannual variability of frequency of storm for- mation is linked to variations in the surface pressure at Darwin, Australia and, by inference, to the Southern Oscillation, apparently a manifestation of the West Pacific teleconnection. CIRES, Univ. of Colorado, NOAA, Boulder, CO 80309-0449, USA.

85:6984 Ramasastry, A.A., A.K. Chaudhury and N.C.

Biswas, 1985. Cyclones and depressions over the Indian seas in 1983. Mausam, 36(1): 1-6. Meteorol. Office, Pune, India.

B320. P a r t i c u l a t e s (dust, aerosols, etc.)

85:6985 Clarke, A.D. and R.J. Charlson, t985. Radiative

properties of the background aerosol: absorption component of extinction. Science, 229(4710): 263-265. Environ. Engrg. and Sci. Pros., Univ_ of Washington, Seattle, WA 98195, USA.

85:6986 Salazar, S. and J.L. Bravo, 1983. [Principal cations

soluble in water: K, Ca, and Mg in atmospheric aerosols in the NE equatorial Pacific.] Geof. Int., 22(2):145-155. (In Spanish, English abstract.) Inst. de Geofisica, UNAM, Mexico.

B380. Forecasting

85:6987 Danard, Maurice, 1985. On the use of satellite

estimates of precipitation in initial analyses for numerical weather prediction. A tmos. Ocean, 23(1):23-42. Atmos. Dynamics Corp., Wood- ridge Place, R.R. 7, Victoria, BC, Canada.

85:6988 van den Dool, H.M. and J.L. Nap, 1985. Short and

long range air temperature forecasts near an ocean. Mon. Weath. Rev., 113(5):878-887. Dept. of Meteorol., Univ. of Maryland, College Park. MD 20742, USA.

B450. Miscellaneous

85:6989 Andreas, E.L., 1985. Heat and moisture advection

over Antarctic sea ice. Mon. Weath. Rev.. 113(5): 736-746.

Weddell Sea spring surface-level temperature and humidity were relatively high, and both were positively correlated with the northerly component of the 850 mb wind vector as far as 600 km from the ice edge. Since even at its maximum extent, at least 60% of the Antarctic ice pack is within 600 km of the open ocean, long-range atmospheric transport of heat and moisture from the ocean must play a key part in Antarctic sea ice heat and mass budgets. In spring, the total turbulent surface heat loss can be 100 W m -2 greater under southerly winds than under northerly ones. U.S. Army Cold Regions Res. and Engrg. Lab., Hanover, NH 03755, USA.