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A comparison of Microtops II and satellite ozone measurements in the period 2001-2011

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Daily average total ozone Microtops measurements obtained during several campaigns conducted from 2001 to 2011 at latitudes from 31 to 68N and in different seasons are compared with satellite observations. The Microtops ozone is derived using different wavelength combinations (Channel I, 305.5/312.5. nm; Channel II, 312.5/320. nm; and Channel III, 305.5/312.5/320. nm). Satellite data from TOMS, OMI, GOME, and GOME-2 are used in the comparison. The three Microtops channels show a high correlation with the satellite retrievals. Channel I shows the best results and produces a mean bias deviation (MBD) less than 2.14% with respect to TOMS, OMI and GOME. The MBD increases to 3% in the comparison against GOME-2, due to the small number of available data. In addition, the total ozone content provided by Channel I displays the more stable behavior during the ten-year period. The Channel III total ozone shows MBD values smaller than those observed for Channel I. However the Channels II and III present a larger variability and show a larger spread of the data. Consequently, Channel I appears as the best option for long term measurements with Microtops. © 2013 Elsevier Ltd.




Gómez-Amo, J. L., Estellés, V., di Sarra, A., Pedrós, R., Sferlazzo, D., Utrillas, M. P., & Martinez-Lozano, J. A. (2013). A comparison of Microtops II and satellite ozone measurements in the period 2001-2011. Journal of Atmospheric and Solar-Terrestrial Physics, 94, 5–12.

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