The rotated/tilted Mercator geometry is introduced. The associated computations are developed. These computations involve formulae for : the direct geometric transform, the reverse geometric transform, the quantities associated to Coriolis force, the map factor, the transformation of vectors (...)
This document explains the new projection routines with an emphasis on bugfixes at the level of Cycle 29.t2 to 30.t1. It explains : the new "cadre" for ALADIN files, use of NCADFORM key, in depth description of parameter setup and checks in sufpg1, ...
Both English and French documentions are (...)
This procedure "surgery" is determining the number of longitudes for each latitude of a gaussian reduced grid, defined by : the number of latitudes NDGL, the maximum number of longitudes NDLON, the truncation NSMAX.
The job is split in 2 parts : first part is the computation of the Legendre (...)
This procedure defines the two corners (SW and NE) of a subgrid Aladin, given : the native grid parameters, the approximative SW subgrid corner (in degrees) : ZLONU & ZLATU the number of points of the subgrid (for C+I) : IDLUXU & IDGUXU
The files location is on andante: (...)