5:15 PM - 6:30 PM
[AAS11-P12] Un-volatile aerosol layer in the lower most stratosphere over tarawa, Kiribati, observed bu balloon norne Optical Particle Counter in january, 2016
Keywords:Tropical Tropopause Layer, stratsphere, aerosol, volatility
Unusual aerosol layer was found in the stratosphere from 18 to 22 km in altitude. The layer was divided into two sub-layers. Upper layer was characterized by smaller high volatile aerosol, and lower one by mixture with larger submicron un-volatile aerosol. The feature was similar to fresh volcanic aerosol layer, however we did not find any report of large volcanic eruption in 2015. We will discuss about origin of the layer.