Impact of Multivariate Background Error Covariance on the WRF-3DVAR Assimilation for the Yellow Sea Fog Modeling

Table 1

Configurations of the weather research and forecasting (WRF).

Model setting and option		Specification
		Case-A	Case-B
Domain	Map projection	Lambert
	Central point	(37.0°N, 125.0°E)	(34.2°N, 124.1°E)
	Grid number	80 × 80 for D1, 151 × 151 for D2	166 × 190 for D1, 120 × 120 for D2
	Horizontal resolution	30 km for D1, 6 km for D2	30 km for D1, 10 km for D2
	Vertical grid	44 with a pressure top at 50 hPa
Initial time		00UTC, 31 March 10 2011	12UTC, 9 April 2009
Time step		Adaptive time step (60–120s for D1)
PBL scheme		YSU scheme [50]
Cumulus parameterization		Kain-Fritsch scheme [51, 52]
Microphysics		Lin (Perdue) scheme [53]
Long-shortwave radiation		RRTMG scheme [54]
Land surface model		Noah [55]

 = 1.0000, 0.9975, 0.9925, 0.9850, 0.9775, 0.9700, 0.9540, 0.9340, 0.9090, 0.8800, 0.8506, 0.8212, 0.7918, 0.7625, 0.7084, 0.6573, 0.6090, 0.5634, 0.5204, 0.4798, 0.4415, 0.4055, 0.3716, 0.3397, 0.3097, 0.2815, 0.2551, 0.2303, 0.2071, 0.1854, 0.1651, 0.1461, 0.1284, 0.1118, 0.0965, 0.0822, 0.0689, 0.0566, 0.0452, 0.0346, 0.0249, 0.0159, 0.0076, and 0.0000.