add template and codes tables for HEALPix grid

GRIB2_CodeFlag_3_12_CodeTable_en.csv

@@ -0,0 +1,6 @@
+Title_en,SubTitle_en,CodeFlag,Value,MeaningParameterDescription_en,Note_en,noteIDs,UnitComments_en,Status
+HEALPix rhomboids or points ordering,,0,,Ring ordering,,,,Operational
+HEALPix rhomboids or points ordering,,1,,Nested ordering,,,,Operational
+HEALPix rhomboids or points ordering,,2-191,,Reserved,,,,Operational
+HEALPix rhomboids or points ordering,,192-254,,Reserved for local use,,,,Operational
+HEALPix rhomboids or points ordering,,255,,Missing,,,,Operational

GRIB2_CodeFlag_3_13_FlagTable_en.csv

@@ -0,0 +1,8 @@
+Title_en,SubTitle_en,CodeFlag,Value,MeaningParameterDescription_en,Note_en,noteIDs,UnitComments_en,Status
+HEALPix scanning mode,,1,0,"Points scan in +i direction, i.e. from North to South",,,,Operational
+HEALPix scanning mode,,1,1,"Points scan in -i direction, i.e. from South to North",,,,Operational
+HEALPix scanning mode,,2,0,"Points scan in +j direction, i.e. from West to East",,,,Operational
+HEALPix scanning mode,,2,1,"Points scan in -j direction, i.e. from East to West",,,,Operational
+HEALPix scanning mode,,3,0,Adjacent points in i direction are consecutive,,,,Operational
+HEALPix scanning mode,,3,1,Adjacent points in j direction are consecutive,,,,Operational
+HEALPix scanning mode,,4-8,,Reserved,,,,Operational

GRIB2_CodeFlag_3_1_CodeTable_en.csv

@@ -44,7 +44,9 @@ Grid definition template number,,111-119,,Reserved,,,,Operational
 Grid definition template number,,120,,Azimuth-range projection,,,,Operational
 Grid definition template number,,121-139,,Reserved,,,,Operational
 Grid definition template number,,140,,Lambert azimuthal equal area projection,,,,Operational
-Grid definition template number,,141-999,,Reserved,,,,Operational
+Grid definition template number,,141-149,,Reserved,,,,Operational
+Grid definition template number,,150,,Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix),,,,Operational
+Grid definition template number,,151-999,,Reserved,,,,Operational
 Grid definition template number,,1000,,Cross-section grid with points equally spaced on the horizontal,,,,Experimental
 Grid definition template number,,1001-1099,,Reserved,,,,Operational
 Grid definition template number,,1100,,Hovmöller diagram grid with points equally spaced on the horizontal,,,,Experimental

GRIB2_CodeFlag_3_8_CodeTable_en.csv

@@ -2,6 +2,9 @@ Title_en,SubTitle_en,CodeFlag,Value,MeaningParameterDescription_en,Note_en,noteI
 Grid point position,,0,,Grid points at triangle vertices,,,,Operational
 Grid point position,,1,,Grid points at centres of triangles,,,,Operational
 Grid point position,,2,,Grid points at midpoints of triangle sides,,,,Operational
-Grid point position,,3-191,,Reserved,,,,Operational
+Grid point position,,3,,Grid points at shape vertices,,,,Operational
+Grid point position,,4,,Grid points at centre of shapes,,,,Operational
+Grid point position,,5,,Grid points at midpoints of shape sides,,,,Operational
+Grid point position,,6-191,,Reserved,,,,Operational
 Grid point position,,192-254,,Reserved for local use,,,,Operational
 Grid point position,,255,,Missing,,,,Operational

GRIB2_Template_3_150_GridDefinitionTemplate_en.csv

@@ -0,0 +1,14 @@
+Title_en,OctetNo,Contents_en,Note_en,noteIDs,codeTable,flagTable,Status
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",15,Shape of the Earth,(see Code table 3.2),,3.2,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",16,Scale factor of radius of spherical Earth,,,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",17-20,Scaled value of radius of spherical Earth,,,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",21,Scale factor of major axis of oblate spheroid Earth,,,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",22-25,Scaled value of major axis of oblate spheroid Earth,,,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",26,Scale factor of minor axis of oblate spheroid Earth,,,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",27-30,Scaled value of minor axis of oblate spheroid Earth,,,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",31,Resolution and component flags,(see Flag table 3.3),,,3.3,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",32-35,nsides - number of sides within a rhomboid shape,(see note 1),197a,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",36-39,Lo - Longitude of the centre line of the first rhomboid,(see note 2),197b,,,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",40,Grid point position,(see Code Table 3.8),,,3.8,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",41,Numbering order,(see Code Table 3.12),,,3.12,Operational
+"Hierarchical Equal Area isoLatitude Pixelization grid (HEALPix)",42,Scanning mode,(see Flag table 3.13),,,3.13,Operational

notes/CodeFlag_notes.csv

@@ -135,3 +135,6 @@ noteID,note
 138,"SOT is defined in https://doi.org/10.1256/qj.02.152. Lower and upper quantile used for the SOT need to be defined (NA=2) in this order: start of the tail (10 or 90 usually) then end of tail (1 or 99 respectively)."
 139,"This table is divided into blocks of 1000 entries: 1-1000, 1001-2000, 2001-3000, etc. Each block corresponds to a specific land cover survey listed in Code table 4.242 and is subsequently divided into 2 ranges of 500 entries (apart for the first 1000 entries which are designed to be generic and not bound to a specific land cover survey). The first 500 entries are reserved for native classification types of the given survey while the remaining 500 are using for groupings of native classification types."
 140,"Parameters 37 and 38 are deprecated. It is recommended to use 63 and 64 instead."
+iss197d,"See Appendix XYZ."
+iss197e,"In the ring ordering scheme, the 12 rhomboids are not considered and the scanning mode applies to the grid in its entirety."
+iss197f,"In the nested ordering scheme, the 12 rhomboids are scanned in order defined in Gorsky et al. 2015. The flag bits then refer to how the points are scanned within a rhomboid."

notes/CodeFlag_table.csv

@@ -24,6 +24,9 @@ tableNo,tableName,subTableName,noteID,notation
 3.9.0.0,Flag table 3.9 - Numbering order of diamonds as seen from the corresponding pole,,,
 3.10.0.0,Flag table 3.10 - Scanning mode for one diamond,,,
 3.11.0.0,Code table 3.11 - Interpretation of list of numbers at end of section 3,,,
+3.13.0.0,Code table 3.13 - HEALPix scanning mode,,197d,1
+3.13.0.0,Code table 3.13 - HEALPix scanning mode,,197e,2
+3.13.0.0,Code table 3.13 - HEALPix scanning mode,,197f,3
 3.15.0.0,Code table 3.15 - Physical meaning of vertical coordinate,,,
 3.20.0.0,Code table 3.20 - Type of horizontal line,,,
 3.21.0.0,Code table 3.21 - Vertical dimension coordinate values definition,,,
@@ -163,4 +166,4 @@ tableNo,tableName,subTableName,noteID,notation
 5.25.0.0,Code table 5.25 - Type of bi-Fourier subtruncation,,,
 5.26.0.0,Code table 5.26 - Packing mode for axes,,,
 5.40.0.0,Code table 5.40 - Type of compression,,,
-6.0.0.0,Code table 6.0 - Bit map indicator,,,
+6.0.0.0,Code table 6.0 - Bit map indicator,,,

notes/Template_notes.csv

@@ -163,3 +163,5 @@ noteID,note
 163,"Wave periods should be specified in seconds."
 164,"See notes under Code table 4.101 for details."
 165,"'Number of reference period time range' is used to define an outer and, if needed, one or more inner loops. The outer loop gives the overall date and time range of the reference period and the inner loop(s) are used to specify a sub-period over all time instances defined in the outer loop in terms of the time unit defined by 'Reference period indicator of unit for time increment'. Typically the outer loop defines a number of years and inner loop defines the date and time range within each year: for instance 'every January for 30 years'."
+iss197a,"The grid is composed of 12 rhomboids, each rhomboid has nsides**2 grid boxes within a rhomboid."
+iss197b,"Longitude of the first grid point of the first rhomboid given in microdegrees. For instance 45.0 degrees is encoded as 45,000,000."