First Ozone Sounding Results Over the UAE

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https://www.worldscientific.com/doi/abs/10.1142/9789812838100_0026

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https://doi.org/10.1142/9789812838100_0026
 http://hdl.handle.net/11603/34842

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UMBC GESTAR II

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https://orcid.org/0000-0002-7829-0920

Date

2010-05-01

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journal articles
preprints
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Citation of Original Publication

Majeed, T., Mazhar Iqbal, Onuod Al-Marzouqi, David Tarasick, Jonathan Davies, Samuel Oltmans, Anne Thompson, Abdullah Al-Abri, S. Zaidi, and Phil Rogers. “First Ozone Sounding Results Over the UAE.” Advances in Geosciences 16 (May 1, 2010): 299-309. https://www.worldscientific.com/doi/abs/10.1142/9789812838100_0026.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

The first ever campaign of observing vertical profiles of ozone over the UAE began on January 24, 2006 with a couple of balloon flights carrying ECC ozonesondes to understand the characteristics of the chemical and dynamical structures at this unique tropical location (latitude 24.45N; longitude 54.22E). The campaign was continued sporadically over the past several years. A total of six ozone profiles are available to date. Preliminary results of January profiles indicate that the stratospheric ozone is quite stable while thick polluted layers confined to the lower tropospheric heights show enhancements in ozone contents. Excessive values of ozone concentration in the range 45 - 50 ppbv at the ground levels are observed. These values are much larger than those observed at other subtropical sounding stations using the same technique. The difference in values probably reflects either the elevated levels of air pollution due to petrochemicals and automobile emissions in the UAE or the effects of photochemical production and destruction of ozone by horizontal transport and convective uplift from the surface. These processes are affected by higher levels of solar radiation and large variations in the relative humidity in the tropical/subtropical troposphere.