There are two surface stations with
multi-year hourly CO
observation in MD. The
Beltsville’s record before
October 2007 does not look
homogeneous and is excluded
from analysis.
1. CO Diurnal cycle in both sites is
almost negligible.
2. CO Seasonal cycle in both sites is
very week but well pronounced
with summer time minimum.
3. The estimates of scales of CO
temporal autocorrelation exceed
8 hours at Frostburg Reservoir
station for all seasons and at
Beltsville, MD station – for cold
season. Warm season scale
estimates at Beltsville, MD are
mostly smaller and are about 6
hours.
4. These scales estimates does not
have noticeable diurnal cycle.