Annual Patterns of Atmospheric Pollutions and Episodes over Cairo Egypt

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="984853.fig.008a" src="https://static.hindawi.com/articles/amete/volume-2013/984853/figures/984853.fig.008a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>1st January, 2012 (winter)</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="984853.fig.008b" src="https://static.hindawi.com/articles/amete/volume-2013/984853/figures/984853.fig.008b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>1st March, 2012 (spring)</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="984853.fig.008c" src="https://static.hindawi.com/articles/amete/volume-2013/984853/figures/984853.fig.008c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>1st July, 2012 (summer)</td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="984853.fig.008d" src="https://static.hindawi.com/articles/amete/volume-2013/984853/figures/984853.fig.008d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>1st November, 2012 (autumn)</td></tr></table></td></tr></table>

<table>HYSPLIT and wind rose graphs for the four seasons in 2012. Three altitudes were considered: green 900 m, blue 700 m, and red 500 m. Win drose was generated at 950 mb.</table>

Advances in Meteorology

fig8

Figure 8

Figure 8: Annual Patterns of Atmospheric Pollutions and Episodes over Cairo Egypt 