Sensitivity of CO₂ and CH₄ Annual Cycles to Different Meteorological Variables at a Rural Site in Northern Spain

Table 6

Differences between average concentrations calculated for different sectors and from observations during the night, together with their corresponding availabilities, numbers of days without observations (gaps), and average wind speed at the site.

Sector	Availability (%)	Gap (days)	Average wind speed (m·s^−1)	CO2 difference		CH4 difference
				ppm	%	ppm	%
NE	24.3	100	4.8	−1.3	−0.32	0.006	0.30
SE	13.1	165	4.3	2.5	0.62	0.003	0.16
SW	25.9	76	6.1	0.9	0.22	−0.001	−0.07
NW	32.3	48	5.5	−0.7	−0.18	−0.005	−0.24