APPENDIX B

WMO BULLETIN HEADERS

USED WITH

EPA/CMAQ GRIB OUTPUT AT NCEP

The Community Multiscale Air Quality (CMAQ) Model is produced by the National Centers for Environmental Prediction (NCEP) and is provided to the Environment Protection Agency (EPA).

WMO Headings have the format of T1T2A1A2ii CCCC .

The CCCC for all CMAQ product WMO headings is KWBP .

The T1 for all CMAQ product WMO headings is Z .

CMAQ Data Type Designator (T2)

L = 8-hour Backward Average

M = 1-hour Backward Average

N = 8-hour Averaged Categorical Ozone Concentration

O = 1-hour Averaged Categorical Ozone Concentration

CMAQ Time Designator (A1A2)

AA= 0-Hour Forecast

AB= 1-Hour Forecast

AC= 2-Hour Forecast

AD= 3-hour Forecast

AE= 4-Hour Forecast

AF= 5-Hour Forecast

AG= 6-Hour Forecast

AH= 7-Hour Forecast

AI= 8-Hour Forecast

AJ= 9-Hour Forecast

AK= 10-Hour Forecast

AL= 11-Hour Forecast

AM= 12-Hour Forecast

AN= 13-Hour Forecast

AO= 14-Hour Forecast

AP= 15-Hour Forecast

AQ= 16-Hour Forecast

AR= 17-Hour Forecast

AS= 18-Hour Forecast

AT= 19-Hour Forecast

AU= 20-Hour Forecast

AV= 21-Hour Forecast

AW= 22-Hour Forecast

AX= 23-Hour Forecast

AY= 24-Hour Forecast

AZ= 25-Hour Forecast

BA= 26-Hour Forecast

BB= 27-Hour Forecast

BC= 28-Hour Forecast

BD= 29-Hour Forecast

BE= 30-Hour Forecast

BF= 31-Hour Forecast

BG= 32-Hour Forecast

BH= 33-Hour Forecast

BI= 34-Hour Forecast

BJ= 35-Hour Forecast

BK= 36-Hour Forecast

BL= 37-Hour Forecast

BM= 38-Hour Forecast

BN= 39-Hour Forecast

BO= 40-Hour Forecast

BP= 41-Hour Forecast

BQ= 42-Hour Forecast

BR= 43-Hour Forecast

BS= 44-Hour Forecast

BT= 45-Hour Forecast

BU= 46-Hour Forecast

BV= 47-Hour Forecast

BW= 48-Hour Forecast

CMAQ Area Designator (ii)

0-9 = Global

10-19 = Regional

20-29 = CONUS

30-39 = OCONUS

40-99 = National (41 = Northeast)