Atmospheric aerosol particles play an important role in atmospheric processes, and have significant impact on global climate, air quality and human health. The effects of secondary aerosol still represent one of the largest uncertainties limiting understanding of climate change. The secondary aerosol originates from gas-to-particle conversion, which is also called New Particle Formation (NPF). NPF in coastal and marine air has not been clearly studied. In many coastal areas NPF events appear frequently, however, in remote marine environments, NPF events occur only occasionally. This book, which aims to give information on neutral charged particles during the coastal NPF and to elucidate the different behaviors of negative and positive particles near the coastal line and on the ocean, therefore, provides detailed analysis of measurement results in coastal and marine atmosphere. The analysis should help shed some light on speculating and understanding the mechanism of atmospheric NPF, and should be especially useful to professionals in Atmospheric Science fields, or anyone else who wants to understand the physical processes in atmosphere.