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dc.contributor.authorYun, J
dc.contributor.authorJeong, S
dc.contributor.authorHo, CH
dc.contributor.authorPark, H
dc.contributor.authorLiu, J
dc.contributor.authorLee, H
dc.contributor.authorSitch, S
dc.contributor.authorFriedlingstein, P
dc.contributor.authorLienert, S
dc.contributor.authorLombardozzi, D
dc.contributor.authorHaverd, V
dc.contributor.authorJain, A
dc.contributor.authorZaehle, S
dc.contributor.authorKato, E
dc.contributor.authorTian, H
dc.contributor.authorVuichard, N
dc.contributor.authorWiltshire, A
dc.contributor.authorZeng, N
dc.date.accessioned2020-08-18T10:47:29Z
dc.date.issued2020-03-03
dc.description.abstractUnderstanding changes in terrestrial carbon balance is important to improve our knowledge of the regional carbon cycle and climate change. However, evaluating regional changes in the terrestrial carbon balance is challenging due to the lack of surface flux measurements. This study reveals that the terrestrial carbon uptake over the Republic of Korea has been enhanced from 1999 to 2017 by analyzing long-term atmospheric CO2 concentration measurements at the Anmyeondo Station (36.53°N, 126.32°E) located in the western coast. The influence of terrestrial carbon flux on atmospheric CO2 concentrations (ΔCO2) is estimated from the difference of CO2 concentrations that were influenced by the land sector (through easterly winds) and the Yellow Sea sector (through westerly winds). We find a significant trend in ΔCO2 of −4.75 ppm per decade (p <.05) during the vegetation growing season (May through October), suggesting that the regional terrestrial carbon uptake has increased relative to the surrounding ocean areas. Combined analysis with satellite measured normalized difference vegetation index and gross primary production shows that the enhanced carbon uptake is associated with significant nationwide increases in vegetation and its production. Process-based terrestrial model and inverse model simulations estimate that regional terrestrial carbon uptake increases by up to 18.9 and 8.0 Tg C for the study period, accounting for 13.4% and 5.7% of the average annual domestic carbon emissions, respectively. Atmospheric chemical transport model simulations indicate that the enhanced terrestrial carbon sink is the primary reason for the observed ΔCO2 trend rather than anthropogenic emissions and atmospheric circulation changes. Our results highlight the fact that atmospheric CO2 measurements could open up the possibility of detecting regional changes in the terrestrial carbon cycle even where anthropogenic emissions are not negligible.en_GB
dc.description.sponsorshipKorea Meteorological Administrationen_GB
dc.description.sponsorshipNational Research Foundation of Koreaen_GB
dc.description.sponsorshipAustralian Government’s National Environmental Science Programen_GB
dc.identifier.citationVol. 26 (6), pp. 3368 - 3383en_GB
dc.identifier.doi10.1111/gcb.15061
dc.identifier.grantnumberKMI2018‐03711en_GB
dc.identifier.grantnumber1365003041en_GB
dc.identifier.grantnumberNRF‐2019R1A2C3002868en_GB
dc.identifier.grantnumberNRF‐2019R1A2C2084294en_GB
dc.identifier.urihttp://hdl.handle.net/10871/122518
dc.language.isoenen_GB
dc.publisherWileyen_GB
dc.rights.embargoreasonUnder embargo until 3 march 2021 in compliance with publisher policyen_GB
dc.rights© 2020 John Wiley & Sons Ltd.en_GB
dc.subjectatmospheric CO2 measurementsen_GB
dc.subjectcarbon cycleen_GB
dc.subjectCT2017en_GB
dc.subjectGEOS‐Chemen_GB
dc.subjectNDVIen_GB
dc.subjectRepublic of Koreaen_GB
dc.subjectterrestrial carbon fluxen_GB
dc.subjectterrestrial ecosystemsen_GB
dc.subjectTRENDYen_GB
dc.titleEnhanced regional terrestrial carbon uptake over Korea revealed by atmospheric CO<inf>2</inf> measurements from 1999 to 2017en_GB
dc.typeArticleen_GB
dc.date.available2020-08-18T10:47:29Z
dc.identifier.issn1354-1013
dc.descriptionThis is the author accepted manuscript. the final version is available from Wiley via the DOI in this recorden_GB
dc.identifier.journalGlobal Change Biologyen_GB
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserveden_GB
dcterms.dateAccepted2020-02-05
rioxxterms.versionAMen_GB
rioxxterms.licenseref.startdate2020-03-03
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2020-08-18T10:44:21Z
refterms.versionFCDAM
refterms.panelBen_GB


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