ARL Weekly News – November 10, 2017

HQ Following a science evaluation and approval from the NCEP Director, HYSPLIT upgraded code was delivered to NCEP Central Operations for the planned April 2018 implementation. The HYSPLIT transport and dispersion model itself has no significant changes. Main changes with this release include adding HRRR, removing RAP, and changing to quarter-degree from half-degree GFS hybrid-level.…