<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><font face="LucidaGrande" class="">Dear Colleagues,</font></div><div class=""><font face="LucidaGrande" class=""><br class=""></font></div><div class=""><font face="LucidaGrande" class="">Contributions are invited to the session organized by the Commissions H, G and E: Lightning and its Interactions with the Ionosphere at the National Radio Science Meeting (NRSM) that will be held on January 9-12, 2019 (Wednesday-Saturday) in Boulder, CO, USA.</font></div><div class=""><font face="LucidaGrande" class=""><br class=""></font></div><div class=""><font face="LucidaGrande" class="">This session is devoted to all aspects of atmospheric/ionospheric/magnetospheric and high energy effects of lightning. This includes observations of transient luminous events, associated radio and electromagnetic effects, X-ray and gamma-ray effects, and theoretical results on these topics.</font></div><div class=""><font face="LucidaGrande" class=""><br class=""></font></div><div class=""><font face="LucidaGrande" class="">The deadline for receipt of abstracts is Monday, September 17, 2018</font></div><div class=""><font face="LucidaGrande" class=""><br class=""></font></div><div class=""><font face="LucidaGrande" class="">The web page <a href="https://nrsmboulder.org" class="">https://nrsmboulder.org</a> contains general information, abstract submission instructions and guidelines. </font></div><div class=""><font face="LucidaGrande" class=""><br class=""></font></div><div class=""><font face="LucidaGrande" class="">Conveners</font></div></body></html>