New PDF release: Atmospheric Science Across the Stratopause

By David E. Siskind, Stephen D. Eckermann, Michael E. Summers

ISBN-10: 0875909817

ISBN-13: 9780875909813

ISBN-10: 1118668391

ISBN-13: 9781118668399

Published via the yankee Geophysical Union as a part of the Geophysical Monograph Series.

lately, separate geophysical examine cultures have constructed within the usa to review the ambience: one among house scientists, who concentrate on the mesosphere, thermosphere and ionosphere, and the opposite of atmospheric scientists, who specialise in the troposphere and stratosphere. The boundary among those learn domain names approximately coincides with the stratopause (50 km). whereas the department ofthe surroundings into layers and bounds serves as an invaluable approach to symbolize some of the chemical and dynamical tactics that distinguish those layers, those obstacles usually are not impermeable. to appreciate such severe matters as international swap, geophysicists needs to learn the ambience as an built-in method. the aim of this monograph is to focus on these reports that reflect on the coupling of those areas and hence compile clinical specialties (atmospheric technological know-how and area technology) which are frequently thought of separately.Content:

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Additional info for Atmospheric Science Across the Stratopause

Example text

It is only because of this dynamically induced cooling of the summer mesopause that noctilucent clouds can form near the mesopause at high latitudes in Transport processes are conveniently divided between those processes that involve mean motions of the atmo­ sphere, or advection, and those processes that may be characterized as turbulent, or diffusive in nature. In the case of point sources, such as volcanic eruptions, the distinction is quite clear; advection moves the center of mass of the plume along the direction of the average wind, while turbu­ lent diffusion disperses the plume in the plane orthogonal to the average wind.

94, 14617-14628, 1989. Mclntyre, M. E. and T. N. Palmer, The 'surf zone' in the stratosphere, J. Atmos. Terr. , 46, 825-849, 1984. McLandress, C, MJ. L. Wu, Microwave Limb Sounder observations of gravity waves in the stratosphere: A climatology and interpretation, J. Geophys. , (in press), 2000. , and M. Herse, Photographic evidence of waves around the 85 km level, Planet. , 25, 265-273, 1977. Mote, P. , T. J. Dunkerton, M. E. Mclntyre, E. A. Ray, P. H. Haynes and J. M. I. / Geophys. , 103, 8651-8666, 1998.

Large-scale w a v e motions have very small amplitudes; a s l o w ageostrophic (cross-isobaric) zonally symmetric meridional drift is the main cause o f meridional transport in the stratosphere in this s e a s o n . In the winter ( e s p e c i a l l y in the Northern Hemisphere) the flow is disturbed by planetary-scale w a v e s o f zonal wavenumbers 1 and 2. Thus, the flow in the winter hemisphere departs significantly from zonal symmetry. The mean flow distribution for the Northern Hemisphere features a cyclonic polar vortex that is distorted by quasistationary planetary w a v e s that form an anticyclonic distur­ bance called the Aleutian high.

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Atmospheric Science Across the Stratopause by David E. Siskind, Stephen D. Eckermann, Michael E. Summers

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