Inferring high-resolution fossil fuel CO2 records at continental sites from 
combined14CO2 and CO observations

Levin, I.; Karstens, U.

doi:10.1111/j.1600-0889.2006.00244.x

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Inferring high-resolution fossil fuel CO₂ records at continental sites from combined ¹⁴CO₂ and CO observations

MPS-Authors

/persons/resource/persons62430

Karstens, U.
Regional Scale Modelling of Atmospheric Trace Gases, Dr. U. Karstens, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;

External Resource

http://dx.doi.org/10.1111/j.1600-0889.2006.00244.x
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Levin, I., & Karstens, U. (2007). Inferring high-resolution fossil fuel CO₂ records at continental sites from combined ¹⁴CO₂ and CO observations. Tellus, Series B - Chemical and Physical Meteorology, 59(2), 245-250. doi:10.1111/j.1600-0889.2006.00244.x.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-D555-3

Abstract

An uncertainty estimate of a purely observational approach to derive hourly regional fossil fuel CO₂ offsets (Delta CO₂(foss)) at continental CO₂ monitoring sites is presented. Weekly mean C-14-based fossil fuel CO₂ mixing ratios and corresponding regional CO offsets (Delta CO) are proposed to determine weekly mean Delta CO/Delta CO₂(foss) ratios in order to derive hourly Delta CO₂(foss) mixing ratios from hourly Delta CO measurements. Respective regional model estimates of CO and CO₂(foss) are applied to test this approach and obtain root mean square errors of the correspondingly determined regional hourly fossil fuel CO₂ component. The method is further validated with campaign-based observations in Heidelberg. The uncertainty of the proposed method turns out to increase with decreasing fossil fuel CO₂ fraction ranging from about 15% up to 40% for continental Europe. Together with the uncertainty of the Delta CO/Delta CO₂(foss) ratio, which is determined by the precision of the (CO₂)-C-14 measurement, this method is still more accurate and precise than any model-based approach. [References: 12]