Characterization of near surface aerosols at a semi-arid station

Global climate change is one of the most serious environmental problems faced by the worked community. It is observed that, large global changes are due to increase in the abundance of aerosols/greenhouse gases have generally occurred as the result of natural forces and one beyond human influence or control (IPCC, 1995). However, in most of the cases, the impact assessment contains large uncertainty and become difficult to determine the validity of the hypothesis made related to anthropogenic contributions. Atmospheric aerosols /ozone and precursors will play an important role in global climate system through modifications of the global radiation budget directly, by the scattering and absorption of radiation; indirectly, by the modification of cloud properties and the surface energy budget. A number of factors complicate the understanding of aerosol /ozone and precursors impact on the local regions.