Variations of Dust Extinction Coefficient Estimated by Lidar Observations over Japan, 2007-2016

Tropospheric aerosol extinction coefficient profiles derived from scanning lidar measurements over Tsukuba, Japan, from 1990 to 1993.

Mie scattering lidar was used to observe aerosol extinction coefficient profiles in the troposphere over Tsukuba (140 E, 36 N), Japan, for three years from March 1990 to February 1993, and data obtained in fair weather were analyzed. The lidar measurements were made by a vertical scanning mode to generate profiles of extinction coefficients from the lidar level to a 12-km altitude. The extincti...

Multiwavelength and polarization lidar measurements of Asian dust layers over Tsukuba, Japan: a case study

Extinction-to-backscatter ratio of Asian dust observed with high-spectral-resolution lidar and Raman lidar.

Extinction-to-backscatter ratio or lidar ratio is a key parameter in the issue of backscatter-lidar inversions. The lidar ratio of Asian dust was observed with a high-spectral-resolution lidar and a combined Raman elastic-backscatter lidar during the springs of 1998 and 1999. The measured values range from 42 to55 sr in most cases, with a mean of 51 sr. These values are significantly larger tha...

A long Saharan dust event over the western Mediterranean: Lidar, Sun photometer observations, and regional dust modeling

[1] A long Saharan dust event affected the western Mediterranean in the period 12– 28 June 2002. Dust was present mainly between 1and 5-km height affecting most parts of the Iberian Peninsula and reaching western/central Europe. Intensive backscatter lidar observations over Barcelona (Spain) and Sun photometer data from two stations (El Arenosillo, Spain, and Avignon, France) are used to evalua...

Monitoring of SO2 column concentration over Iran using satellite-based observations during 2005-2016

For the first time, sulfur dioxide concentration was monitored between 2005 and 2016 over Iran which is among the countries with a high SO2 emission rate in the world. To that end, SO2 column concentration at Planetary Boundary Layer (PBL) from Ozone Monitoring Instrument (OMI) was analyzed. OMI is a sensor onboard the Aura satellite which can measure daily SO2 concentration on the global scale...