PROPOSAL OF NEW TRIGGERED LIGHTNING LAUNCH COMMIT CRITERIA FOR JAPAN’S SAFETY ROCKET LAUNCH

摘要

Triggered lightning for rocket launch can cause thernfailure.rnThe current Japanese criteria to postpone the launchrnopportunity is the thickness of cloud 1.8km with 0~-20rndegrees Celsius. Of all H2A launches during these tenrnyears, slipping launches have occurred over half of itsrnflights. So, we have initiated a research on TriggeredrnLightning Launch Commit Criteria, two years ago.rnWe present the overall activities with the observationrncampaign (RAIJIN*) in Feb/2012 and Jan-Feb/2013, byrnmeans of air-born field mill with airplane, X-band dualrnpolarization radar, ground based field mill andrnVideosonde. Also, the analytical results and proposal ofrnthe new criteria will be shown.rn1.Raijin is originally a name for Thunder god inrnJapanese and here it stands for Rocket launchrnAtmospheric electricity Investigation by Jaxa INrncooperation with academia.