Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget
Most previous top-down global carbon monoxide (CO) budget estimates have used only concentration information and shown large differences in individual source estimates. Since CO from certain sources has a specific isotopic signature, coupling the concentration and isotope fraction information can pr...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2015-04-01
|
| Series: | Atmosphere |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2073-4433/6/5/547 |
| _version_ | 1818960965199200256 |
|---|---|
| author | Keyhong Park Louisa K. Emmons Zhihui Wang John E. Mak |
| author_facet | Keyhong Park Louisa K. Emmons Zhihui Wang John E. Mak |
| author_sort | Keyhong Park |
| collection | DOAJ |
| description | Most previous top-down global carbon monoxide (CO) budget estimates have used only concentration information and shown large differences in individual source estimates. Since CO from certain sources has a specific isotopic signature, coupling the concentration and isotope fraction information can provide a better constraint on CO source strength estimates. We simulate both CO concentration and its oxygen isotopologue C18O in the 3-D global chemical transport model MOZART-4 and compare the results with observations. We then used a Bayesian inversion to calculate the most probable global CO budget. In the analysis, δ18O information is jointly applied with concentration. The joint inversion results should provide more accurate and precise inversion results in comparison with CO-only inversion. Various methods combining the concentration and isotope ratios were tested to maximize the benefit of including isotope information. The joint inversion of CO and δ18O estimated total global CO production at 2951 Tg-CO/yr in 1997, 3084 Tg-CO/yr in 1998, and 2583 Tg-CO/yr in 2004. The updated CO budget improved both the modeled CO and δ18O. The clear improvement shown in the δ18O implies that more accurate source strengths are estimated. Thus, we confirmed that the observation of CO isotopes provide further substantial information for estimating a global CO budget. |
| first_indexed | 2024-12-20T12:05:55Z |
| format | Article |
| id | doaj.art-5670717d8e8041a5bb7149f3fabb1f16 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-20T12:05:55Z |
| publishDate | 2015-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-5670717d8e8041a5bb7149f3fabb1f162022-12-21T19:41:24ZengMDPI AGAtmosphere2073-44332015-04-016554757810.3390/atmos6050547atmos6050547Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO BudgetKeyhong Park0Louisa K. Emmons1Zhihui Wang2John E. Mak3Institute for Terrestrial and Planetary Atmospheres, School of Marine and Atmospheric Sciences, State University of New York at Stony Brook, Stony Brook, NY 11794, USAAtmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO 80301, USAInstitute for Terrestrial and Planetary Atmospheres, School of Marine and Atmospheric Sciences, State University of New York at Stony Brook, Stony Brook, NY 11794, USAInstitute for Terrestrial and Planetary Atmospheres, School of Marine and Atmospheric Sciences, State University of New York at Stony Brook, Stony Brook, NY 11794, USAMost previous top-down global carbon monoxide (CO) budget estimates have used only concentration information and shown large differences in individual source estimates. Since CO from certain sources has a specific isotopic signature, coupling the concentration and isotope fraction information can provide a better constraint on CO source strength estimates. We simulate both CO concentration and its oxygen isotopologue C18O in the 3-D global chemical transport model MOZART-4 and compare the results with observations. We then used a Bayesian inversion to calculate the most probable global CO budget. In the analysis, δ18O information is jointly applied with concentration. The joint inversion results should provide more accurate and precise inversion results in comparison with CO-only inversion. Various methods combining the concentration and isotope ratios were tested to maximize the benefit of including isotope information. The joint inversion of CO and δ18O estimated total global CO production at 2951 Tg-CO/yr in 1997, 3084 Tg-CO/yr in 1998, and 2583 Tg-CO/yr in 2004. The updated CO budget improved both the modeled CO and δ18O. The clear improvement shown in the δ18O implies that more accurate source strengths are estimated. Thus, we confirmed that the observation of CO isotopes provide further substantial information for estimating a global CO budget.http://www.mdpi.com/2073-4433/6/5/547carbon monoxideinverse modelingisotopeglobal CO budget |
| spellingShingle | Keyhong Park Louisa K. Emmons Zhihui Wang John E. Mak Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget Atmosphere carbon monoxide inverse modeling isotope global CO budget |
| title | Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget |
| title_full | Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget |
| title_fullStr | Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget |
| title_full_unstemmed | Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget |
| title_short | Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget |
| title_sort | joint application of concentration and δ18o to investigate the global atmospheric co budget |
| topic | carbon monoxide inverse modeling isotope global CO budget |
| url | http://www.mdpi.com/2073-4433/6/5/547 |
| work_keys_str_mv | AT keyhongpark jointapplicationofconcentrationandd18otoinvestigatetheglobalatmosphericcobudget AT louisakemmons jointapplicationofconcentrationandd18otoinvestigatetheglobalatmosphericcobudget AT zhihuiwang jointapplicationofconcentrationandd18otoinvestigatetheglobalatmosphericcobudget AT johnemak jointapplicationofconcentrationandd18otoinvestigatetheglobalatmosphericcobudget |