Geostationary Lightning Mapper: Post Launch Test Results

GOES-16, the first of NOAA’s new series of geostationary weather satellites, equipped with the new Geostationary Lightning Mapper (GLM) instrument, has completed post launch test and is beginning operations in the GOES East slot. Within minutes of opening the GLM aperture door on January 4^th, 2017, lightning was detected across the entire field of view. We present highlights from the six-month post launch test that followed, including on orbit and ground processing parameter optimization, and new insights into what we expect to see in the data as GLM becomes operational, as obtained from over 300 million flashes detected by GLM so far.