NO | 39 |
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Acronym | KMA |
Name | Korea Meteorological Administration |
Address 1 | |
Address 2 | KMA/NIMS |
Address 3 | 33, Seohobuk-ro, Seogwipo, Jeju, 63568 |
Country/Territory | Republic of Korea |
Website | http://www.kma.go.kr/ |
Name | Daegeun Shin |
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Prefix | |
shingeun@korea.kr | |
Organization No | 39 |
Organization acronym | KMA |
Organization name | Korea Meteorological Administration |
Organization country/territory | Republic of Korea |
Address 1 | |
Address 2 | National Institute of Meteorological Sciences/Korea Meteorological Administration |
Address 3 | 33 Seohobuk-ro, Seogwipo, Jeju, 63568 Rep.of Korea |
Country/territory | Republic of Korea |
Tel | +82-64-780-6570 |
Fax | +82-64-738-6512 |
Last updated date | 2024-06-27 |
Background observation | |
UTC+09:00 | |
ppb | |
2014-01-01 00:00:00 - 2014-12-31 23:59:59: WMO CH4 X2004 2015-01-01 00:00:00 - 9999-12-31 23:59:59: WMO CH4 X2004A |
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9999-12-31 00:00:00 - 2016-01-13 23:59:59: Agilent 6890N(Gas chromatography (FID)) 2016-01-14 00:00:00 - 9999-12-31 23:59:59: Picarro, 2301(CRDS) |
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9999-12-31 00:00:00 - 2003-12-31 23:59:59: 66 (m) 2004-01-01 00:00:00 - 9999-12-31 23:59:59: 86 (m) |
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5 seconds | |
1999 to 2016.Jan.14: Methane is calibrated with one point standard. Every, 5 am, 11 am, 17 pm, 23 pm, the standard gas is injected into the instrumnets. We calibrate the instruments every week regulary but when the instrument showed the mulfuction we do it again. However, our calibration is always based on ONE POINT standard gas assuming GC-FID has linearity and STD concentration is similar to background concentration. And also we use the standard gases as target tank. We track the drift of STD area/amount from GC and according the drift data is fixed. From 2016.1.14 to now : Every two weeks, 4 point standard gases From 1999 to 2004 : NOAA CMDL83 scale was used (But corrected with NOAA04 scale) From 2004 to 2013 : KRISS scale was used(No correction). 2014 : NOAA04 scale. From 2015 to Now : NOAA04A scale |
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RAW data: L0 Auto QC (criteria) and Mannual QC (by staff at each station) : L1 Valid/Invalid (by Scientist in the institute): L2 Hourly and daily baseline selection: HS(t) <=A, [HA(t)-HA(t+1)] <= B or [HA(t)-HA(t-1)] <= B, [HA(t)-30days moving median of HA] <=C : L3 hourly and daily data Curve fitting: L3 monthly data Seo et al. (2021), Atmosphere. Korean Meteorological Society Vo.31 No.5(2021) pp1-14 |
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[Hourly] [Daily] [Monthly] |
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Mannual Flagging 666: inlet filter exchange 658: Diaphragm pump error/low flow 600: Dehumidification system error 683, 682, 685: calibration period, zero/span check, other experimental period 652, 647: Observatory environmental issue 110: Extreme weather issue 910: Other issue which can affect on the measurement Auto Flagging(six steps) Instrumental malfunction Instrumental detection limit Physical limit Step check Continuous check Comparison check |
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Operational/Reporting | |
Sampling Environment : The sampling site is located between Korea and China. Ihe location is on the hill at distance of about 500m from the west open sea(Yellow sea), and at an elevation around 46m asl. Along the shore line in north-south direction not much activities in winter time, however, in summer recreational activities such as swimming with some small restaurants. The vegetation around the station are mixed forest with mostly pine. Agricultural activities nearby include rice and sweet potato cultivation. For preparing the agricultural land, agricultural waste burning is conducted mainly in spring and autumn. Sampling and Analysis Frequency -1999 to 2016.Jan.14: every 30 minute - From 2016.1.14 to now: every 5 sec .Intake -Filter; Stainless steel filter, monthly replacement, D 4.7 cm , pore size 5μm -Tube: Dekabon(Nitta Moore 1300-10 D 7.94mm) -Length from tower to dehumidification system: 50m, No low local point pump - KNF N145.1.2.AN.18 Germany, 55 L/min Dehumidification system -1999~2011: Three step(4℃ → Nafion → Mg(ClO4)2) -2012~Now: One step(- 80℃ cold trap) After Dehumidification system - stainless steel 1/8" link to the instrument When the data from GC-FID and CRDS were compared, it showed linearity matching well enough between two instrumnets (R2 = 0.97, delta = 4 ppb). Description of Instruments - 1999 to 2016.Jan.14: one peak in every 30 mins. - From 2016.1.14 to now : one value in every 5 secs. Data Remarks : The blank period is from instrumental malfunction with unknown reasons. KMA/NIMS cannot assure the data from the period that it was discarded from WDCGG. However, KMA has and keep its raw data in the database. When we find out the reason cleary, it will be recovered. |
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Wind direction: 1 Wind speed: 1 Relative humidity: 0 Precipitation amount: 0 Air pressure: 0 Air temperature: 0 Dew point temperature: 0 Sea water temperature: 0 Sea surface water temperature: 0 Sea water salinity: 0 Sea surface water salinity: 0 |
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Meteorological data may remain as first provided, even when greenhouse gas data are updated. |
DOI |
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Version |
2024-06-27-0750 (Data Version History) * DOIs and file names may have multiple versions. Be sure to check the data version. |
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Title | Atmospheric CH4 at Anmyeon-do by Korea Meteorological Administration, dataset published as CH4_AMY_surface-insitu_KMA_data1 at WDCGG | ||||||||||||||||
Creator |
Korea Meteorological Administration Daegeun Shin (KMA) |
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Publisher | World Data Centre for Greenhouse Gases | ||||||||||||||||
Publication Date | 2018-08-02 (Last Updated: 2024-07-18) | ||||||||||||||||
Format | Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF | ||||||||||||||||
Relation List (Is Part Of) |
All CH4 data contributed to WDCGG by GAW stations and mobiles by 2023-09-13 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2022-09-07 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2021-08-27 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2020-09-28 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2019-09-19 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2018-10-25 |
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Geolocation Point |
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1 |
Li et al.,(2022) DOI: 10.5572/KOSAE.2022.38.1.74 Lee et al.,(2021) DOI: 10.5572/KOSAE.2021.37.5.790 Kenea et al.,(2021) DOI: 10.3390/rs13122266 Dlugokencky et al (1993): The relationship between the methane seasonal cycle and regional sources and sinks at Tae-ahn Peninsula, Korea, Atmo. Environ. 27(14) |
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