Project: Norwegian Wind Atlas		Customer: NVE/ENOVA		Revision: 2.0.0
	Scenario: Climatology		User: VECTOR AS		Date: 28.04.01 17:26

+	Climatology Helnes

		Averaging periods
		The wind climate displays large seasonal variations. The climatology is presented for different averaging periods.
		Averaging period: Year Year Spring Summer Autumn Winter
		Key climatology data
		The wind climatology is presented graphically as a wind rose, giving the average wind speed distribution according to velocity intervals and wind directions. The velocity intervals are divided in 9 bins, where every occurrence of wind speeds above 18 m/s has been lumped in the last bin. Incoming wind directions are divided in 12 sectors, where the first sector is centred around north.

				site name	Helnes
				measurement period	-
				x - position longitude	26.2167
				y - position latitude	71.0667
				co-ordinate system	2
				anemometer height	10.0
				number of sectors	12
				number of bins	12
				total records	-
				average wind speed	6.7

Fig 1.

Wind rose Helnes. Averaging period: Year

	The wind climatology presented in the below table, gives the accumulated frequency of occurrence and the average wind speed for each sector.

	.	N	NNE	ENE	E	ESE	SSE	S	SSW	WSW	W	WNW	NNW
	freq	0.036	0.024	0.046	0.092	0.058	0.114	0.118	0.093	0.105	0.140	0.070	0.091
	mean	6.9	6.8	6.6	5.9	5.7	5.6	6.4	7.9	7.0	7.1	8.0	8.0

Table 2.

Frequency (-) and average wind speed (m/s) versus sector.