Measurements of Ice Nucleating Aerosols in the Upper Troposphere and Lower Stratosphere Zero Geoengineering Posted on September 25, 2018 by directorSeptember 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: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on Tumblr (Opens in new window) Tumblr Share on Reddit (Opens in new window) Reddit Email a link to a friend (Opens in new window) Email Related