photos from dubai’s 828 meter tall burj khalifa (save the first and last photos, which show the building) by (click pic) daniel cheong, karim nafatni, bjoern lauen and dave alexander. duabai only experiences this in september and march, when seasonal changes in temperature creates an abundance of early morning fog. (see also: fog over new york, london and chicago)
I use smart sharpen. The settings depends on the quality of the image though. You have to try because it may not work well in some pictures.