Vv. Zuev et al., Processes of long-term relaxation of stratospheric aerosol layer in Northern Hemisphere midlatitudes after a powerful volcanic eruption, ATMOS ENVIR, 35(30), 2001, pp. 5059-5066
Multiyear lidar measurements of characteristics of stratospheric aerosol la
yer, made at midlatitude observatories in Tomsk (56.5 degreesN, 85.0 degree
sE) and Minsk (53.9 degreesN, 27.5 degreesE), are analyzed and used to stud
y the processes of long-term relaxation of the aerosol-perturbed stratosphe
re after powerful volcanic eruptions to background state. The absence of si
gnificant seasonal variations of vertical stratification of stratospheric a
erosol and exponential altitudinal decrease of aerosol backscattering coeff
icient are proposed as criteria of background state of stratospheric aeroso
l layer for Northern Hemisphere midlatitudes. (C) 2001 Elsevier Science Ltd
. All rights reserved.