A Case Study of Offshore Advection of Boundary Layer Rolls over a Stably Stratified Sea Surface

Table 4

Data from WRF simulations during the four days, showing meteorological conditions and roll characteristics taken from the study area as described in Section 2.5.

Date	02/05/1997	03/05/1997	17/05/2011	25/05/2011
Observed rolls (UTC)	0800–1700	0800–1800	1300–1900	0700–1900
Full rolls (UTC)	0800–1700	0800–1700	1300–1800	0700–1600
(m s^−1)	15.2	15.3	15.5	17.1
Wind shear (s^−1)	0.03	0.02	0.04	0.02
	−0.056	−0.12	−0.036	−0.06
	0.7	0.15	0.82	0.2
, land (km)	7.5	7.0	7.8	5.1
, sea 1 (km)	9.9	10.2	9.4	8.7
, sea 2 (km)	29.6	31.7	31.7	33.5
Number of rolls land	35	37	29	50
Number of rolls, sea 1	26	24	28	34
Number of rolls, sea 2	12	21	18	17
(m s^−1)	1.5	1.7	1.6	1.9
, sea 1 (m s)	1.4	1.1	1.9	2.0
, sea 2 (m s^−1)	0.7	1.0	0.9	1.1
, land	4.8	3.9	5.4	3.8
, sea 1	7.5	6.7	7.7	7.3
, sea 2	22.5	20.8	26.0	30.1
Length (km)	80	100	80	80