Abstract
A fast-response chemiluminescent ozone sensor was mounted in an aircraft instrumented for air motion and temperature measurements. Measurements of the vertical flux of ozone by the eddy correlation technique were obtained after correcting for time delay and pressure sensitivity in the ozone sensor output. The observations were taken over eastern Colorado for two days in April, one a morning and the other an afternoon flight. Since the correlation coefficient of ozone and vertical velocity is small compared to, for example, temperature and vertical velocity in the lower part of the convective boundary layer, an averaging length of the order of 100 km was required to obtain a reasonably accurate estimate of the ozone flux. The measured variance of ozone appeared to be too large, probably mainly due to random noise in the sensor output, although the possibility of the production of ozone fluctuations by chemical reactions cannot be dismissed entirely. Terms in the budget equation for ozone were estimated from the aircraft measurements and the divergence of the ozone flux was found to be large compared to the flux at the surface divided by the boundary-layer height.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Danielsen, E., Bleck, R., Shedlovsky, J. Wartburg, A., Haagenson, P., and Pollock, W.: 1976, ‘Observed Distribution of Radioactivity, Ozone, and Potential Vorticity Associated with Tropopause Folding’, J. Geophys. Res. 75, 2353–2361.
Eastman, J. A. and Stedman, D. H.: 1977, ‘A Fast Response Sensor for Eddy-Correlation Flux Measurements’, Atmos. Envir. 11, 1209–1211.
Kaimal, J. C.: 1978, ‘NOAA Instrumentation at the Boulder Atmospheric Observatory’, Preprint Volume, Fourth Symposium on Meteorological Observations and Instrumentation, April 10–14, 1978, Denver CO. Published by the American Meteorological Society, Boston, MA, 35–40.
Kaimal, J. C. Wyngaard, J. C., Haugen, D. A., Coté, Izumi Y., Caughey, S. J., and Readings, C. J.: 1976, ‘Turbulence Structure in the Convective Boundary Layer’, J. Atmos. Sci. 33, 2152–2169.
Lenschow, D. H., Cullian, C. A., Friesen, R. B., and Brown, E. N.: 1978, ‘The Status of Air Motion Measurements on NCAR Aircraft’, Preprint Volume, Fourth Symposium on Meteorological Observations and Instrumentation, April 10–14, 1978, Denver, CO. Published by the American Meteorological Society, Boston, MA, 433–438.
Lenschow, D. H., Wyngaard, J. C., and Pennell, W. T.: 1980, ‘Mean-Field and Second-Moment Budgets in a Baroclinic, Convective Boundary Layer’, to appear in J. Atmos. Sci.
Lumley, J. L. and Panofsky, H. A.: 1964, The Structure of Atmospheric Turbulence. John Wiley and Sons, Inc., New York, 239.
McFarland, M., Kley, D., Drummon, J. W., Schmeltekopf, A. L., and Winkler, R. H.: 1979, ‘Nitric Oxide Measurements in the Equatorial Pacific Region’, Geophys. Res. Letts. 6, 605–608.
McMahon, T. A. and Denison, P. J.: 1977, ‘Empirical Atmospheric Deposition Parameters — A Survey’, Atmos. Envir. 13, 571–585.
Stedman, D. H., Daby, E. E., Stuhl, F., and Niki, H.: 1972, ‘Analysis of Ozone and Nitric Oxide by a Chemiluminescence Method in Laboratory and Atmospheric Studies of Photochemical Smog’, J. Air. Poll. Control Assoc. 22, 26–264.
Turner, N. C., Waggoner, P. E. and Rich, S.: 1974, ‘Removal of Ozone from the Atmosphere by Soil and Vegetation’, Nature 250, 486–488.
Von Dop, H., Guicherit, R., and Lanting, R. W.: 1977, ‘Some Measurements of the Vertical Distribution of Ozone in the Atmospheric Boundary Layer’, Atmos. Envir. 11, 65–71.
Wesley, M. L., Eastman, J. A., Cook, D. R., and Hicks, B. B.: 1978, ‘Daytime Variations of Ozone Eddy Fluxes to Maize’, Boundary-Layer Meteorol. 15, 361–373.
Wyngaard, J. C.: 1974, ‘On Surface-Layer Turbulence’, Workshop on Micrometeorology, D. A. Haugen, Editor, American Meteorological Society, 45 Beacon St., Boston, MA 02108, 101–149.
Wyngaard, J. C., Pennell, W. T., Lenschow, D. H., and LeMone, M. A.: 1978, ‘The Temperature-Humidity Covariance Budget in the Convective Boundary Layer’, J. Atmos. Sci. 35, 47–58.
Author information
Authors and Affiliations
Additional information
Part of this work was carried out while a visitor at Risø National Laboratory, Denmark.
The National Center for Atmospheric Research is sponsored by the National Science Foundation.
Rights and permissions
About this article
Cite this article
Lenschow, D.H., Delany, A.C., Stankov, B.B. et al. Airborne measurements of the vertical flux of ozone in the boundary layer. Boundary-Layer Meteorol 19, 249–265 (1980). https://doi.org/10.1007/BF00117223
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00117223