OIS | WMO

TABLE B2

Instructions for the proper application of the data type designators

(1)	The designator specified in this table should be used to the greatest extent possible to indicate the type of data contained within the text of the bulletin.
(2)	Where more than one type is contained in the text, the designators for only one of the data types should be used.
(3)	When the table does not contain a suitable designator for the data type, an alphabetic designator which is not assigned in the table should be introduced and the WMO Secretariat notified.

T1	T2	T2 - Data Type
D, G, H, X, Y	A	Radar data
D, G, H, X, Y	B	Cloud
D, G, H, X, Y	C	Vorticity
D, G, H, X, Y	D	Thickness (relative topography)
D, G, H, X, Y	E	Precipitation
D, G, H, X, Y	F	-
D, G, H, X, Y	G	Divergence
D, G, H, X, Y	H	Height
D, G, H, X, Y	I	-
D, G, H, X, Y	J	Wave height + combinations
D, G, H, X, Y	K	Swell height + combinations
D, G, H, X, Y	L	-
D, G, H, X, Y	M	For national use
D, G, H, X, Y	N	Radiation
D, G, H, X, Y	O	Vertical velocity
D, G, H, X, Y	P	Pressure
D, G, H, X, Y	Q	Wet bulb potential temperature
D, G, H, X, Y	R	Relative humidity
D, G, H, X, Y	S	-
D, G, H, X, Y	T	Temperature
D, G, H, X, Y	U	Eastward wind component
D, G, H, X, Y	V	Northward wind component
D, G, H, X, Y	W	Wind
D, G, H, X, Y	X	Lifted index
D, G, H, X, Y	Y	Observational plotted chart
D, G, H, X, Y	Z	Not assigned