Ångström coefficient as an indicator of the atmospheric aerosol type for a well-mixed atmospheric boundary layer : Part 1: Model development

The physical and optical properties of an atmospheric aerosol mixture depend on a number of factors. The relative humidity influences the size of hydroscopic particles and the effective radius of an aerosol mixture. In consequence, values of the aerosol extinction, the aerosol optical thickness and the Ångström coefficient are modified. A...

Influence of aerosols on off-axis laser detection capabilities

The radiation coming from a laser which operates in the coastal zone can be detected not only when a detector is placed in front of the laser beam but also when it is located outside the main beam direction. The reason is that in a real detection scheme the power collected by a detector not only comes from direct radiation but also from other...

Determination of atmospheric aerosol properties over land using satellite measurements

Mostly, aerosol properties are poorly understood because the aerosol properties are very sparse. The first workshop on the determination of atmospheric aerosol properties over land using satellite measurements is convened in Bremen, Germany. In this workshop, the topics of discussions included a variety of satellite aerosol optical thickness...

The inter-comparison of AATSR dual-view aerosol optical thickness retrievals with results from various algorithms and instruments

The Advanced Along-Track Scanning Radiometer (AATSR) dual-view (ATSRDV) aerosol retrieval algorithm is evaluated for a single scene over Germany (49-53° N, 7-12° E) on 13 October 2005 by comparison of the aerosol optical thickness (AOT) at 550 nm with products from Multiangle Imaging SpectroRadiometer (MISR), Moderate Resolution Imaging...

Aerosol optical thickness retrieval over land and water using SCIAMACHY/GOME data

An algorithm for the retrieval of the aerosol optical thickness over land and over water from SCIAMACHY (SCanning Imaging Absorption SpectroMeter for Atmospheric ChartographY) is presented. Because calibrated data are not yet available for the SCIAMACHY channels used by the algorithm, the concepts were tested with GOME (Global Ozone Monitoring...

Comparison between satellite retrieved aerosol optical thickness and results obtained from the LOTOS model

Aerosols affect the Earth radiation balance by absorbing and scattering solar radiation and changing the albedo and the lifetime of clouds. Aerosols also play a role in health-related problems. The aerosol lifetime varies from a few days 10 about a week and their quite strong but rather Iocalised sources produce highly variable aerosol...