Climate Evolution Life on earth is affected by aerosols in different ways. They play an important role in the climate system; the effect of aerosols on the global climate system is one of the major uncertainties of present climate predictions. They play a major role in atmospheric chemistry and hence affect the concentrations of other potentially harmful atmospheric constituents, e.g. ozone. They are an important controlling factor for the radiation budget, in particular in the UV-B part of the spectrum. At ground level, they can be harmful, even toxic, to man, animals, and plants. Because of these adverse effects that aerosols can have on human life, it is necessary to achieve an advanced understanding of the processes that generate, redistribute, and remove aerosols in the atmosphere. A quantitative data set describing the aerosol vertical, horizontal, and temporal distribution, including its variability on a continental scale, is necessary. No suitable data set for this purpose presently exists. in this framework, EZ Lidar instruments match exactly these needs, e. g. being a part of a Lidar network thanks to its autonomous unattended capabilities, in order to store data measurement on cirrus clouds frequency and altitude,  aerosol densities, planetary boundary layer height, temporal evolution and particle asphericity detection thanks to its depolarization channel. Read More »