Journal ArticleDOI
Reconstruction of O3 and N2O fields from ER‐2, DC‐8, and balloon observations
Leslie R. Lait,Mark R. Schoeberl,Paul A. Newman,Michael H. Proffitt,Max Loewenstein,J. R. Podolske,Susan E. Strahan,K. Roland Chan,B. L. Gary,J. J. Margitan,Edward V. Browell,M. Patrick McCormick,A. L. Torres +12 more
TLDR
In this paper, the potential vorticity and potential temperature of each measurement as coordinates were used to reconstruct the chemical composition of the polar vortex during the Airborne Arctic Stratospheric Expedition.Abstract:
Measurements of N2O and O3 during the Airborne Arctic Stratospheric Expedition have been composited using the potential vorticity and potential temperature of each measurement as coordinates. For ozone, data sources included the ER-2 and balloon ozonesonde in situ measurements, DC-8 DIAL lidar, and Stratospheric Aerosol and Gas Experiment satellite profiles. For N2O, only ER-2 data were used. These chemical composites have been reconstructed onto average meteorological fields for the mission in a latitude-altitude cross section, yielding a picture of the chemical composition of the polar vortex during this period. Tracers inside the vortex show an apparent descent of about 2 km relative to those outside, resulting in an apparent chemical edge on isentropic and isobaric surfaces.read more
Citations
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Journal ArticleDOI
The structure of the polar vortex
TL;DR: In this article, a comparative analysis of the 1987 Southern Hemisphere and 1989 Northern Hemisphere lower stratospheric, polar vortex circulation and constituent distributions as observed by the Airborne Antarctic Ozone Experiment, August 17-September 22, 1987, and Airborne Arctic Stratospheric Expedition, January 3-February 19, 1989 aircraft campaigns is presented.
Journal ArticleDOI
Interrelationships between mixing ratios of long‐lived stratospheric constituents
R. Alan Plumb,Malcolm K. W. Ko +1 more
TL;DR: In this article, a 2D chemistry-transport model was used to show that species with longer lifetimes than vertical transport time scales are in gradient equilibrium and their mixing ratios display a linear relationship.
Journal ArticleDOI
The dynamics of the stratospheric polar vortex and its relation to springtime ozone depletions
TL;DR: The aircraft data show that gradients of potential vorticity and the concentration of conservative trace species are large at the transition from mid-latitude to polar air, implying that the inward mixing of heat and constituents is strongly inhibited and that the perturbed polar stratospheric chemistry associated with the ozone hole is isolated from the rest of the stratosphere until the vortex breaks up in late spring.
Journal ArticleDOI
Computations of diabatic descent in the stratospheric polar vortex
TL;DR: In this paper, a radiation model was used to compute daily net heating rates in the northern hemisphere (NH) and in the southern hemisphere (SH) for the Antarctic fall and winters of 1987 and 1992.
Journal ArticleDOI
Stratospheric horizontal wavenumber spectra of winds, potential temperature, and atmospheric tracers observed by high-altitude aircraft
Julio T. Bacmeister,Stephen D. Eckermann,Paul A. Newman,Leslie R. Lait,K. Roland Chan,Max Loewenstein,Michael H. Proffitt,B. L. Gary +7 more
TL;DR: In this article, the horizontal wavenumber power spectra of vertical and horizontal wind velocities, potential temperatures, and ozone and N(2)O mixing ratios, as measured in the mid-stratosphere during 73 ER-2 flights (altitude approx. 20km) are presented.
References
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Journal ArticleDOI
Transport of ozone in the middle stratosphere: evidence for planetary wave breaking
Conway B. Leovy,C.-R. Sun,Matthew H. Hitchman,E. E. Remsberg,James M. Russell,Larry L. Gordley,John C. Gille,Lawrence V. Lyjak +7 more
TL;DR: This article used data from the Nimbus 7 Limb Infrared Monitor of the Stratosphere (LIMS) for the period October 25, 1978-May 28, 1979 for a descriptive study of ozone variations in the middle stratosphere.
Journal ArticleDOI
Reconstruction of the constituent distribution and trends in the Antarctic polar vortex from ER‐2 flight observations
Mark R. Schoeberl,Leslie R. Lait,Paul A. Newman,Russell L. Martin,Michael H. Proffitt,Dennis L. Hartmann,Max Loewenstein,James R. Podolske,Susan E. Strahan,James M. Anderson,K. Roland Chan,B. L. Gary +11 more
TL;DR: In this article, the measurements of ozone, ClO, and N2O concentrations in the south polar region taken aboard the ER-2 aircraft during the Airborne Antarctic Ozone Experiment are analyzed using conservative coordinate transformations to potential temperature-N2O and potential temperaturepotential vorticity space.
Journal ArticleDOI
Towards a Lagrangian-Mean Description of Stratospheric Circulations and Chemical Transports
TL;DR: In this article, the theory of Lagrangian means and Stokes drifts is reviewed, with particular attention to recent developments and to possibilities for applying the ideas to the stratosphere.
Journal ArticleDOI
Stratospheric constituent trends from ER-2 profile data
Mark R. Schoeberl,Michael H. Proffitt,K. K. Kelly,Leslie R. Lait,Paul A. Newman,Joan E. Rosenfield,Max Loewenstein,J. R. Podolske,Susan E. Strahan,K. Roland Chan +9 more
TL;DR: In this paper, a trend analysis of the Airborne Arctic Stratospheric Expedition's ER-2 profile data reveals an average decrease in N2O on potential temperature isentropes which can be attributed to diabatic cooling of inner vortex air.
Journal ArticleDOI
Radiative heating rates during the Airborne Arctic Stratospheric Experiment
Joan E. Rosenfield,Mark R. Schoeberl,Leslie R. Lait,Paul A. Newman,Michael H. Proffitt,K. K. Kelly +5 more
TL;DR: In this paper, a radiative transfer model and observed temperature and ozone profiles are used to compute three-dimensional fields of heating rates for the Northern Hemisphere during 1989 Airborne Arctic Stratospheric Experiment.
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