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Fred M. Vukovich

produces a forced response and'a transientresponse which are Rossby waves. The heating affectsthe planetary waves more than those which might beclassified as mesoscale waves (Chow et al., 1972; Deromeand Wiin-Nielsen, 1971). However, the addition of heatto the atmosphere also produces another transientresponse--gravity waves. The creation of gravity wavesby adding heat in the lower atmosphere has beendiscussed by Geisler and Bretherton (1969) andVukovich (1971). This response is a mesoscalephenomenon

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B. Pinty and D. Tanre

relationship betweenthe incident and the double-way transmittances overthe solar spectral range, based on model calculationwith respect to the relevant optically acting parametersfor a cloudless atmosphere. In some ways, our approachis analogous to those previously used in studying aglobal relationship between planetary and surface al' bedos (Chert and.Ohring, 1984; 'Preuss and Geleyn,1980; Koepkc and Kriebel, 1987).2. Methodology The relationship between the incident and the double-way transmittance is

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Nicholas W. Coburn, James C. Spencer, and David L. Brenchley

and turbulence in the planetary boundary layer. ESSA Tech. Memo. ERLTM ARL-8, 61 pp.Lettau, H. 1962: Theoretical wind spirals in the boundary layer of a barotropic atmosphere. Beitr. Phys. Atmos., 35, 195-212.---, and W. F. Dabberdt, 1970: Variangular wind spirals. Boundary Layer Meteor., 1, 64-79.McPherson, Ronald D., 1970: A numerical study of the effect of a coastal irregularity on the sea breeze. J. Appl. Meteor., 9, 767-771.O'Brien, James J., 1970: A note on the vertical structur

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Bernard Pinty, Gérard Szejwach, and Jacques Stum

descriptionThe present method of inferring albedo values usessimultaneous satellite measurements of radiance L5and surface global radiation EG. The upwelling radiance to the satellite, over a flat homogeneous terrainwith Lambertian albedo a, is the sum of backscatteredradiance from the impinging solar radiation at thetop of the atmosphere and surface irradiance reflectedby the surface multiplied by the transmittance of theatmospheric path within the sensor's field of view:E5L5-[aa + aT(0o)1~0~~)/(l -ir(1

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Marianne Gube

over latentand sensible heat into available potential energy andfinally into kinetic energy of the atmospheric circu~lation. Changes within this energy scheme are indicative of climatic changes. The radiative properties of the atmosphere in relation to the transformation into available potentialenergy can be globally monitored solely by satellites.Radiation budget data from satellite measurementsgive a possibility to check the results of climate models, e.g., planetary albedo and longwave

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H. N. Lee and R. J. Larsen

Introduction Measurements of 222 Rn and its progeny have been used extensively to validate vertical mixing and horizontal transport in global models (e.g., Allen et al. 1996 ; Ramonet et al. 1996 ; Lee and Feichter 1995 ; Genthon and Armengaud 1995 ; Balkanski et al. 1993 ; Feichter et al. 1991 ). However, there is limited data on the distribution of 222 Rn in the atmosphere, particularly in the vertical direction. In this paper, the vertical distributions of 222 Rn obtained during the

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A. Venkatram and R. Viskanta

remote sensors. NASA Contractor Rep. No. CR-1380, General Dynamics Corporation, San Diego, Calif.Lusis, M. A., and H. A. Wiebe, 1976: The rate of oxidation of sulphur dioxide in the plume of a nickel smelter stack. A tmos. Environ., 10, 793-798.Lykosov, V. N., 1972: Unsteady state in the planetary boundary layer of the atmosphere. Izv. Atmos. Ocean Phys., 8, 85-91.McClatchey, R. A., R. W. Fenn, J. E~ A. Selby, F. E. Volz and J. S. Garing, 1972: Optical properties of the atmosphere, 3rd

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Edward A. Brotak

474 JOURNAL OF APPLIED METEOROLOGY VOLUMBI9A Comparison of the Meteorological Conditions Associated with a Major Wfidland Fire in the United States and a Major Bush Fire in Australia EDWARD A. BROTAKDepartment of Earth & Planetary Environments. Kean College of New Jersey, Union, NJ 0708311 November 1979 and 15 January 1980ABSTRACT Two days which produced major wildland fires in the eastern United

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G. A. Degrazia, O. L. L. Moraes, and A. P. Oliveira

974JOURNAL OF APPLIED METEOROLOOYVOL~ 35An Analytical Method to Evaluate ML~ng Length Scales for the Planetary Boundary Layer G. A.. D~.a~.~zrn ~ O. L. L. MORAESUniver$idade Federal de Santa Maria, Departamento Fisica da, Santa Maria, Brazil A. P. OLrVEmADepartamento de Ci~ncias Atmosfdricas, IAG-USP, Sao Paulo, Brazil(Manuscript received 24 April 1995, in final form 13 September 1995)ABSTRACT An analytical method to evaluate the Lagrangian length scales for a

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Claude Klapisz and Alain Weill

14 January 1982)ABSTRACT We have studied a set of detailed mean horizontal wind profiles obtained with a three-component Dopplersodar. For inversion-capped, convective boundary layer conditions, empirical expressions for the mean horizontal wind and the wind shear in the first few hundred meters of the atmosphere are presented. Theobservations are parameterized with the height of the lowest inversion z~, the Monin-Obukhov length L andthe friction velocity u,. From experimental values and

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