Linear approximation for the interpretation of the "adze" observations with a dobson spectrophotometer at Mexico City
Main Article Content
Abstract
A linear analytical expression for the reduction of the "ADZB" type total ozone observations made at Mexico City is obtained. A comparative analysis among the charts developed in Canada, England, Sweden and the method proposed here is made. We find that the observations at Mexico City give erroneous results when they are interpreted using the Canadian and English charts. The reduction of the data using the method proposed here when the total ozone amount was between 240 and 320 DU and when the optical mass was between 1 and 2.5, give similar results to those obtained using the Swedish chart. For high ozone amounts (X> 320DU) the "ADZB" total ozone observations give uncertain results at Mexico City, this is probably caused by atmospheric pollution and, under these conditions, the use of this type of observation is not recommended.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
BRAVO, J. L., 1984. Determinación del espesor de la capa de ozona con un espectrofotómetro de Dobson en una atmósfera urbana. Master Degree thesis, Fac. de Ciencias, UNAM.
DOBSON, G. M. and C. W. B. NORMAND, 1962. Determination of the constants etc. Used in the calculations of the amounts of ozone from spectrophotometer measurements and analysis of the accuracy of the results. Annals of the I G. Y, XVI, Part II, 161-191-Pergamon Press.
KERR, J. B., 1973. Short time period fluctuations in the total ozone. PAGEOPH, Vol. 106-108 (1973 IV-VII) Birkhäuser Verlag, Basel. DOI: https://doi.org/10.1007/BF00881050
KOMHYR, W. D., 1961. Measurements of atmosphere ozone at Moonsonee, Canada - July 1, 1957 to July 31, 1960. Canadian Meteorological Memoirs, No. 6, Dept. transport, Met. Branch, Toronto, 96 pp.
KOMHYR, W. D., 1980. Operation handbook-ozone observations with a Dobson spectrophotometer, WMO, global ozone Research and Monitoring Project, Report No. 6, 29-31.
LONDON, J. and S. J. OLTMANS, 1978/1979. The global distribution of long-term total ozone variation during the period 1957-1975 PAGEOPH, Vol. 17. Birkhäuser Verlag, Basel, 346-350. DOI: https://doi.org/10.1007/BF00876620
RINDERT, S. B., 1975. Fifteen years of ozone observations at Uppsala. Doctoral Dissertation, Department of Meteorology. University of Uppsala, Report No. 43, 200 pp.