OIS | WMO

Excerpt taken from: WMO No. 386 Manual on the Global Telecommunication System
Part II - Operational Procedures for the GTS
ATTACHMENT II–5 - DATA DESIGNATORS T1T2A1A2ii IN ABBREVIATED HEADINGS

TABLE C7

Data type designator A1 (when T1 = K)

Instructions for the proper application of the data type designators

(1)	T1T2 = SZ is allocated to sea level data and deep-ocean tsunami data in any alphanumeric form, including CREX.

T1	=	K	-	CREX
T2	=	F	-	Surface/Sea Level

T1	T2	A1	ii	Data type	TAC correspondence	Data Category Sub Category (Common Table C13)
K	F	A		Surface area forecast (e.g. airways)
K	F	D		Radiological forecast	RADOF
K	F	M		Surface forecasts (eg MOS)
K	F	O		Maritime forecast	MAFOR
K	F	P		Forecast amendments (airways)
K	F	R		Hydrologic forecast	HYFOR
K	F	S		Forecast amendments (TAF)
K	F	T		Aerodrome forecast (TAF)
K	F	X		Other surface forecasts

T1	=	K	-	CREX
T2	=	O	-	Oceanographic/limnographic (water properties)

T1	T2	A1	ii	Data type	TAC correspondence	Data Category Sub Category (Common Table C13)
K	O	B		Buoy observations	BUOY	001/025
K	O	I		Sea ice
K	O	P		Sub-surface profiling floats	TESAC	031/004
K	O	R		Sea surface observations	TRACKOB	031/001
K	O	S		Sea surface and below soundings	BATHY, TESAC	031/005
K	O	T		Sea surface temperature
K	O	W		Sea surface waves	WAVEOB	031/002
K	O	X		Other sea environmental	WAVEOB	031/002

T1	=	K	-	CREX
T2	=	P	-	?

T1	T2	A1	ii	Data type	TAC correspondence	Data Category Sub Category (Common Table C13)
K	P	I		Sea ice
K	P	S		Sea surface and below soundings
K	P	T		Sea surface temperature
K	P	W		Sea surface waves
K	P	X		Other sea environmental

T1	=	K	-	CREX
T2	=	S	-	Surface

T1	T2	A1	ii	Data type	TAC correspondence	Data Category Sub Category (Common Table C13)
K	S	A	01-29	Routinely scheduled observations for distribution from automatic (fixed or mobile) land stations (e.g. 0000, 0100, … or 0220, 0240, 0300, …, or 0715, 0745, … UTC)	n/a	000/006
K	S	A	30-59	N-minute observations from automatic (fixed or mobile) land stations	n/a	000/007
K	S	B		Radar reports (parts A and B)	RADOB	006/003
K	S	C	01-45	Climatic observations from land stations	CLIMAT	000/020
K	S	C	46-59	Climatic observations from marine stations	CLIMAT SHIP	001/020
K	S	D		Radiological observation	RADREP	010/001
K	S	E		Measurement of surface ozone	n/a	008/000
K	S	F		Source of atmospherics	SFAZI, SFLOC, SFAZU	000/030
K	S	I	01-45	Intermediate synoptic observations from fixed land stations	SYNOP (SIxx)	000/001 000/051
K	S	I	46-59	Intermediate synoptic observations from mobile land stations	SYNOP MOBIL	000/004
K	S	M	01-45	Main synoptic observations from fixed land stations	SYNOP (SMxx)	000/002 000/052
K	S	M	46-59	Main synoptic observations from mobile land stations	SYNOP MOBIL	000/005
K	S	N	01-45	Synoptic observations from fixed land stations at non-standard time (i.e. 01, 02, 04, 05, ... UTC)	SYNOP (SNxx)	000/000 000/050
K	S	N	46-59	Synoptic observations from mobile land stations at non-standard time (i.e. 01, 02, 04, 05, 07, 08, 10, 11, 13, ..UTC)	SYNOP MOBIL	000/003
K	S	R		Hydrologic reports	HYDRA	000/040
K	S	S	01-19	Synoptic observations from marine stations	SHIP	001/000
K	S	S	20-39	One-hour observations from automatic marine stations	n/a	001/006
K	S	S	40-59	N-minute observations from automatic marine stations	n/a	001/007
K	S	V		Special aeronautical observations (SPECI)	SPECI	000/011
K	S	W		Aviation routine weather observations (METAR)	METAR	000/010
K	S	X		Other surface data	IAC, IAC FLEET

T1	=	K	-	CREX
T2	=	T	-	?

T1	T2	A1	ii	Data type	TAC correspondence	Data Category Sub Category (Common Table C13)
K	T	E		Tsunami
K	T	H		Hurricane, typhoon, tropical storm warning
K	T	S		Severe weather, SIGMET
K	T	T		Tornado warning
K	T	X		Other warnings

T1	=	K	-	CREX
T2	=	U	-	Upper air

T1	T2	A1	ii	Data type	TAC correspondence	Data Category Sub Category (Common Table C13)
K	U	A		Single level aircraft reports (automatic)	AMDAR	004/000
K	U	A		Single level aircraft reports (manual)	AIREP/PIREP	004/001
K	U	B		Single level balloon reports	n/a
K	U	C		Single level satellite-derived reports	SAREP	005/000
K	U	D		Dropsonde/dropwindsondes	TEMP DROP	002/007
K	U	E		Ozone vertical sounding		008/001
K	U	I		Dispersal and transport analysis	n/a	009/000
K	U	J	01-19	Upper wind from fixed land stations (parts A, B, C and D)	PILOT	002/001
K	U	J	20-39	Upper wind from mobile land stations (parts A, B, C and D)	PILOT MOBIL	002/003
K	U	J	40-59	Upper wind from marine stations (parts A, B, C and D)	PILOT SHIP	002/002
K	U	K	01-19	Radio soundings from fixed land stations (parts A and B)	TEMP	002/004
K	U	K	20-39	Radio soundings from mobile land stations (parts A and B)	TEMP MOBIL	002/006
K	U	K	40-59	Radio soundings from marine stations (parts A and B)	TEMP SHIP	002/005
K	U	L		Total ozone	n/a	008/002
K	U	M		Model derived sondes
K	U	N		Rocketsondes
K	U	O		Profiles of aircraft observations in ascending /descending	AMDAR	002/020
K	U	P		Profilers	PILOT	002/010
K	U	Q		RASS temperature profilers	TEMP	002/011
K	U	S	01-19	Radiosondes/pibal reports from fixed land stations (parts A, B, C and D)	TEMP	002/004
K	U	S	20-39	Radio soundings from mobile land stations (parts A, B, C and D)	TEMP MOBIL	002/006
K	U	S	40-59	Radio soundings from marine stations (parts A, B, C and D)	TEMP SHIP	002/005
K	U	T		Satellite derived sondes
K	U	U	01-45	Monthly statistics of data from upper-air stations	CLIMAT TEMP	002/025
K	U	U	01-45	Monthly statistics of data from upper-air stations	CLIMAT TEMP	002/025
K	U	U	46-59	Monthly statistics of data from marine stations	CLIMAT TEMP, SHIP	002/026
K	U	W	01-19	Upper wind from fixed land stations (parts A and B)	PILOT	002/001
K	U	W	20-39	Upper wind from mobile land stations (parts A and B)	PILOT MOBIL	002/003
K	U	W	40-59	Upper wind from marine stations (parts A and B)	PILOT SHIP	002/002
K	U	X		Other upper air reports

T1	=	K	-	CREX
T2	=	V	-	Upper air

T1	T2	A1	ii	Data type	TAC correspondence	Data Category Sub Category (Common Table C13)
K	V	A		Forecast at single levels
K	V	B		Coded SIGWX, Embedded Cumulonimbus
K	V	C		CREX coded SIGWX, Clear air turbulence
K	V	F		CREX coded SIGWX, Fronts
K	V	N		CREX coded SIGWX, Other SIGWX parameters
K	V	O		CREX coded SIGWX, Turbulence
K	V	S		Forecast soundings
K	V	T		CREX coded SIGWX, Icing/Tropopause
K	V	V		CREX coded SIGWX, Tropical storms, sandstorms, volcanoes
K	V	W		CREX coded SIGWX, High-level winds
K	V	X		Other upper air forecasts