The linear particle depolarization ratios at 440, 675, 870, and 1020 nm were derived using data taken with the AERONET sun–sky radiometer at Seoul (37.45 N, 126.95 E), Kongju (36.47 N, 127.14 E), Gosan (33.29 N, 126.16 E), and Osaka (34.65 N, 135.59 E). The results are compared to the linear particle depolarization ratio measured by lidar at 532 nm. The correlation coefficient R2 between the li...