Aerosols Effect on U.H.I.E and G.E.

    How do aerosols effect climate change through the Urban Heat Island Effect and Greenhouse Effect?  

     Well, to start, aerosols are tiny particles suspended in the air, both natural and industrial, including sea salt, mineral dust, ash, soot, sulphates, nitrates, and black carbon. They hang around in the air for around 10 days, scattering and absorbing radiation from the sun. Aerosols also provide nuclei for water droplets, boosting cloud formation, thus decreasing the amount of energy reaching the ground and providing a net cooling force. In short, greenhouse gases warm the surface; aerosols cool the surface. A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect.  The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. Aerosols, via clouds, reduce energy reaching the ocean, contributing a net cooling effect to both the surface and subsurface ocean temperature. In the U.K. model, the aerosol’s cooling effect is so strong it even cancels out any greenhouse gas-induced warming. However, actual observations show a much warmer ocean. Thus we are left with the knowledge that action to address the greenhouse gas versus aerosol problem will likely have to proceed without precise quantification of their respective temperature effects on climate.