Measurements of Ice Nucleating Aerosols in the Upper Troposphere and Lower Stratosphere Zero Geoengineering Posted on September 25, 2018 by Jolie DianeSeptember 25, 2018 2 September 1997 Atmospheric Effects of Aviation NASA The focus of this project was the measurement and characterization of IN in the upper troposphere and lower stratosphere. Link To Report Share this:FacebookTwitterTumblrRedditEmail Related