Environmental Modeling Center, NWS

SYSTEMATIC ERRORS IN OPERATIONAL GLOBAL FORECASTS FOR JUNE-AUGUST 1999

ZONAL MEAN FIELDS verified against global analyses

HEIGHT	TEMPERATURE	ZONAL WIND	MERID WIND	HORIZ DIV
		anl, 3dy means	anl, 1dy means	anl, 1dy means
		anl, 7dy means	anl, 5dy means	5dy, 7dy means
			3dy mean	3dy mean
			7dy means	anl, 15dy means
	1, 3 dy error	1, 3 dy error	1, 3 dy error	1, 3 dy error
	5, 7 dy error	5, 7 dy error	5, 7 dy error	5, 7 dy error
				7, 8 dy error
10, 15 dy error	10, 15 dy error			10, 15 dy error

LONGITUDE-PRESSURE CROSS-SECTIONS OF ERRORS verified against global analyses

GEOPOTENTIAL HEIGHT

45N	EQUATOR	45S
anl,15dy fcst	anl,15dy fcst	anl,15dy fcst
10,15dy error	10,15dy error	10,15dy error

TEMPERATURE

60N	50N	45N	30N	EQUATOR	30S	45S	60S
anl,15dy mean	anl,15dy mean	anl,15dy mean	anl,15dy mean	anl,15dy mean	anl,15dy mean	anl,15dy mean	anl,15dy mean
1,3dy error	1,3dy error	1,3dy error	1,3dy error	1,3dy error	1,3dy error	1,3dy error	1,3dy error
5,7dy error	5,7dy error	5,7dy error	5,7dy error	5,7dy error	5,7dy error	5,7dy error	5,7dy error
10,15dy error	10,15dy error	10,15dy error	10,15dy error	10,15dy error	10,15dy error	10,15dy error	10,15dy error

HORIZONTAL DIVERGENCE

EQUATOR

REGIONAL ERRORS verified against global analyses

GEOPOTENTIAL HEIGHT

TEMPERATURE

1000 mb	925 mb	850 mb	800 mb	700 mb	500 mb
anl,15dy fcst		anl,15dy fcst	anl,15dy fcst		anl,15dy fcst
1,3dy error	1,3dy error	1,3dy error	1,3dy error	1,3dy error	1,3dy error
5,7dy error	5,7dy error	5,7dy error	5,7dy error	5,7dy error	5,7dy error
10,15dy error	10,15dy error	10,15dy error	10,15dy error	10,15dy error	10,15dy error

ZONAL WIND

HORIZONTAL DIVERGENCE