We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Methods for Estimating Air-Sea Fluxes of CO Using High-Frequency Measurements.
- Authors
Norman, Maria; Rutgersson, Anna; Sørensen, Lise; Sahlée, Erik
- Abstract
The most direct method for flux estimation uses eddy covariance, which is also the most commonly used method for land-based measurements of surface fluxes. Moving platforms are frequently used to make measurements over the sea, in which case motion can disturb the measurements. An alternative method for flux estimation should be considered if the effects of platform motion cannot be properly corrected for. Three methods for estimating CO fluxes are studied here: the eddy-covariance, the inertial-dissipation, and the cospectral-peak methods. High-frequency measurements made at the land-based Östergarnsholm marine station in the Baltic Sea and measurements made from a ship during the Galathea 3 expedition are used. The Kolmogorov constant for CO, used in the inertial-dissipation method, is estimated to be 0.68 and is determined using direct flux measurements made at the Östergarnsholm site. The cospectral-peak method, originally developed for neutral stratification, is modified to be applicable in all stratifications. With these modifications, the CO fluxes estimated using the three methods agree well. Using data from the Östergarnsholm site, the mean absolute error between the eddy-covariance and inertial-dissipation methods is 0.25 μmol m s. The corresponding mean absolute error between the eddy-covariance and cospectral-peak methods is 0.26 μmol m s, while between the inertial-dissipation and cospectral-peak methods it is 0.14 μmol m s.
- Subjects
BALTIC Sea; EDDY flux; CARBON monoxide &; the environment; ANALYSIS of covariance; MARINE laboratories; KOLMOGOROV complexity; ARCHAEOLOGICAL stratification
- Publication
Boundary-Layer Meteorology, 2012, Vol 144, Issue 3, p379
- ISSN
0006-8314
- Publication type
Article
- DOI
10.1007/s10546-012-9730-9