Remote Sensing Instruments Used for Measurement and Model Validation of Optical Parameters of Atmospheric Aerosols

A trans-Pacific Asian dust episode and its impacts to air quality in the east coast of U.S.

“…To reduce this uncertainty, we use sunphotometermeasured aerosol optical depth (SP-AOD) to constrain the lidarratio or lidar-derived aerosol extinction profile, which means that the initially selected value of lidar ratio can be iteratively adjusted over 10e100 sr until the lidar-derived aerosol optical depth (integrating extinction profile with the range) matches SP-AOD (Pelon et al, 2002). In addition, we consider the influence from aerosol contribution in the lidar overlap region (0e0.5 km) by using the ceilometer-measured backscatter profile if available or by extending a constant of aerosol extinction at 0.5 km to the surface (Vladutescu et al, 2012). Stratospheric aerosol contribution to the column AOD is neglected because it is sufficiently small in nonvolcanic periods in comparison to the troposphere (Thomason et al, 2008).…”

Application of Lidar and other profiling techniques to study the impact that Severe weather hazards have on the New York City built environment

“…1 as well as other atmospheric boundary layer instruments and studies including the construction and evaluation of the Coherent Doppler Lidar (CDL) [1][2][3][4]. In addition, a number of previous reports incorporate these instruments (including additional instrumentation) to study the dynamics of the urban atmospheric boundary layer in the NYC metropolitan region with applications to air quality [5,6], wind hazards [7], turbulent boundary layer and stability studies [8][9][10][11].…”

A method based on iterative morphological filtering and multiple scattering for detecting layer boundaries and extinction coefficients with LIDAR

“…Detecting and quantifying the spatial distributions and sizes of clouds and aerosol particles can be useful for the climate change investigation and aeronautical meteorological research [1][2][3][4]. Many equipments have been utilized to detect the optical properties of clouds and aerosol particles, such as nephelometer and sun-photometer, but LIDAR is a popular probe that can be used to scan the spacial physical properties in three dimensions, thereby reflecting clouds and aerosol particles distribution completely [5,6].…”