Abstract
The long-term temporal trends and spatial distribution of Ozone (O3) over Egypt is presented using monthly data from both the Atmospheric Infrared Sounder (AIRS) and the model Modern-Era Retrospective analysis for Research and Applications (MERRA) datasets. The twelve-year monthly record (2005–2016) of the Total Ozone Column (TOC) has a spatial resolution of 1 × 1° from AIRS and 0.5 × 0.625° from the MERRA-2 dataset. The average monthly, seasonal and interannual time series are analyzed for their temporal trends, while the seasonal average spatial distributions are compared. It was found that MERRA-2 underestimated AIRS measurements. Both AIRS and MERRA-2 have their minimum monthly averages of TOC in February 2013. The maximum monthly average TOC from AIRS is 321.48 DU in July 2012, while that from MERRA-2 is 303.48 in April 2011.
Highlights
Ozone is a major greenhouse gas, it plays an important role in both weather and climate, and its impact varies from global to regional scales [1,2]
While it represents only 0.0012% of the atmospheric composition [3], ozone acts as an absorber for the energetic particle from the solar ultraviolet radiation (UV), protecting the earth from harmful radiation [4,5], which has a harmful effect on human health on the skin [6,7]
Ozone is a secondary pollutant that is produced during the atmospheric photo-oxidation of volatile organic compounds under the presence of nitrogen oxides emitted, mainly, by anthropogenic activities, while surface ozone is considered to be the most damaging air pollutant in terms of adverse effects on human health, vegetation, crops and materials in Europe and may become worse in the future [16,17,18,19,20]
Summary
Ozone is a major greenhouse gas, it plays an important role in both weather and climate, and its impact varies from global to regional scales [1,2]. While it represents only 0.0012% of the atmospheric composition [3], ozone acts as an absorber for the energetic particle from the solar ultraviolet radiation (UV), protecting the earth from harmful radiation [4,5], which has a harmful effect on human health on the skin [6,7]. Evaluation of ozone profile and variability from different satellite data against in situ measurements (on board the NSF/NCAR Gulfstream-V aircraft during the Stratosphere-Troposphere Analyses of Regional Transport in 2008 (START08) experiment) from
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
