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Development of a calibration system for stable water vapor isotope measurements using Cavity Ring-Down Spectroscope

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dc.contributor.authorLee, Daeun-
dc.contributor.authorHan, Yeongcheol-
dc.contributor.authorKim, Songyi-
dc.contributor.authorHur, Soon Do-
dc.contributor.authorLee, Jeonghoon-
dc.date.accessioned2021-05-03T02:20:00Z-
dc.date.available2021-05-03T02:20:00Z-
dc.date.issued2020-06-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/11803-
dc.description.abstractRecent development of laser-based spectroscopy introduces continuous measurement method for water vapor isotopic compositions. The measurement precision and accuracy should precede to obtain high temporal resolution data. Here, we developed a calibration system for water vapor isotopic measurement for applications to field studies. Each standard water vapor, evaporated from two isotopically distinct standard waters, was constantly introduced to the Cavity Ring-Down Spectroscope (CRDS). The theoretical isotopic compositions of standard water vapor, calculated using an equilibrium fractionation accompanied by constant temperature, were used as references to calculate a measurement error. This study was conducted in various environment, such as on-board measurements and in Antarctica, to validate the stability of the system when the humidity was lower than the analyzer recommendations. The cavity humidity was calibrated using local Automatic Weather Station (AWS), and then the calibration equation was determined in each different humidity level using enriched (δ18O: -7.98‰, δD: -56.1‰) and depleted (δ18O: -37.44‰, δD: -294.8‰) standards. The calibration system successfully reproduced normalized errors(Δ) within reported values, less than 0.1±0.21‰ (1±1.4‰) for δ18O (δD), without humidity dependency. As a result, the method is widely applicable for long-term high resolution observations at extremely dry environment like polar regions and high altitude regions.en_US
dc.languageKoreanen_US
dc.language.isokoen_US
dc.subjectgeologyen_US
dc.subject.classificationJang Bogo Stationen_US
dc.titleDevelopment of a calibration system for stable water vapor isotope measurements using Cavity Ring-Down Spectroscopeen_US
dc.title.alternative공동 광자 감쇠 분광기를 이용한 수증기 안정 동위원소비 측정을 위한 검정법 개발en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationLee, Daeun, et al. 2020. "Development of a calibration system for stable water vapor isotope measurements using Cavity Ring-Down Spectroscope". <em>지질학회지</em>, 56(3): 395-403.en_US
dc.citation.title지질학회지en_US
dc.citation.volume56en_US
dc.citation.number3en_US
dc.identifier.doi10.14770/jgsk.2020.56.3.395-
dc.citation.startPage395en_US
dc.citation.endPage403en_US
dc.description.articleClassificationKCI등재-
dc.description.jcrRateJCR 2018:0en_US
dc.subject.keywordstable water vapor isotopesen_US
dc.subject.keywordCavity Ring-Down Spectroscopeen_US
dc.subject.keywordcalibrationen_US
dc.identifier.localId2020-0242-
dc.identifier.scopusid2-s2.0-85090696842-
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