# (C) Copyright 2005- ECMWF.

# TEMPLATE 3.31, Albers equal area
include "grib2/template.3.shape_of_the_earth.def"

constant isGridded = true;

# Nx - number of points along the X-axis
unsigned[4] Nx  : dump;
alias numberOfPointsAlongTheXAxis=Nx;
alias geography.Nx=Nx;

# Ny - number of points along the Y-axis
unsigned[4] Ny  : dump;
alias numberOfPointsAlongTheYAxis=Ny;
alias geography.Ny=Ny;

# La1 - latitude of first grid point
signed[4] latitudeOfFirstGridPoint : edition_specific,dump;
alias La1  = latitudeOfFirstGridPoint;

# Lo1 - longitude of first grid point
unsigned[4] longitudeOfFirstGridPoint : edition_specific,dump;
alias Lo1  = longitudeOfFirstGridPoint;

include "grib2/template.3.resolution_flags.def"

# LaD - Latitude where Dx and Dy are specified
signed[4] LaD  : dump;
alias latitudeWhereDxAndDyAreSpecified=LaD ;

# LoV - Longitude of meridian parallel to Y-axis along which latitude increases as the Y-coordinate increases
unsigned[4] LoV  : dump;

# Dx - X-direction grid length
unsigned[4] xDirectionGridLength  : dump;
alias Dx  = xDirectionGridLength;

# Dy - Y-direction grid length
unsigned[4] yDirectionGridLength  : dump;
alias Dy =  yDirectionGridLength;

# Projection centre flag
flags[1] projectionCentreFlag 'grib2/tables/[tablesVersion]/3.5.table' : dump;
include "grib2/template.3.scanning_mode.def"

# Latin 1 - first latitude from the pole at which the secant cone cuts the sphere
signed[4] Latin1 :edition_specific;
meta  geography.Latin1InDegrees scale(Latin1,one,grib2divider,truncateDegrees) : dump;

# Latin 2 - second latitude from the pole at which the secant cone cuts the sphere
unsigned[4] Latin2  : edition_specific;
meta  geography.Latin2InDegrees scale(Latin2,one,grib2divider,truncateDegrees) : dump;

# Latitude of the southern pole of projection
signed[4] latitudeOfTheSouthernPoleOfProjection : edition_specific ;
alias latitudeOfSouthernPole=latitudeOfTheSouthernPoleOfProjection;
meta  geography.latitudeOfSouthernPoleInDegrees   scale(latitudeOfTheSouthernPoleOfProjection          ,one,grib2divider,truncateDegrees) : dump;

# Longitude of the southern pole of projection
unsigned[4] longitudeOfTheSouthernPoleOfProjection :edition_specific;
alias longitudeOfSouthernPole=longitudeOfTheSouthernPoleOfProjection;
meta  geography.longitudeOfSouthernPoleInDegrees   scale(longitudeOfTheSouthernPoleOfProjection,oneConstant,grib2divider,truncateDegrees) : dump;
