CH₄ _ GSN2025 _ surface - insitu _ GERC _ data1

Data Policy

GAW Data Policy

"For Scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."

Version

2025-01-01-0052 (Last updated: 2024-12-24)

File

This data set is submitted by GERC.

Gas Species	Station/Mobile	Organization	Type	Period	Filename	Size	Plot
CH₄	Gosan	GERC	hourly	2002-01-01 01:00:00 - 2011-12-31 23:00:00	ch4_gsn2025_surface-insitu_52_9999-9999_hourly	(Text: 15.25MB ; NetCDF: 21.08MB )	png
CH₄	Gosan	GERC	daily	2002-01-01 00:00:00 - 2011-12-31 00:00:00	ch4_gsn2025_surface-insitu_52_9999-9999_daily	(Text: 0.65MB ; NetCDF: 0.89MB )	png
CH₄	Gosan	GERC	monthly	2002-01-01 00:00:00 - 2011-12-01 00:00:00	ch4_gsn2025_surface-insitu_52_9999-9999_monthly	(Text: 0.03MB ; NetCDF: 0.04MB )	png

Text NetCDF

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Organization

NO	52
Acronym	GERC
Name	National Institute of Environmental Research
Address 1	The National Institute of Environmental Research
Address 2	Environmental Research Complex
Address 3	Hwangyeong-ro 42, Seo-gu, Incheon, 22689
Country/Territory	Republic of Korea
Website	http://eng.me.go.kr/eng/web/index.do?menuId=46

Contact(s)

Last updated date	2020-07-28
Name	Jiyoung Kim
Prefix	Ms.
Email	jykim77@korea.kr
Organization No	52
Organization acronym	GERC
Organization name	National Institute of Environmental Research
Organization country/territory	Republic of Korea
Address 1
Address 2	Environmental Research Complex
Address 3	Hwangyeong-ro 42, Seo-gu, Incheon, 22689
Country/territory	Republic of Korea
Tel	+82-32-560-7309
Fax	+82-32-568-2042

Last updated date	2020-07-28
Name	Eunjung Kim
Prefix	Ms.
Email	2929eun@korea.kr
Organization No	52
Organization acronym	GERC
Organization name	National Institute of Environmental Research
Organization country/territory	Republic of Korea
Address 1
Address 2	Environmental Research Complex
Address 3	Hwangyeong-ro 42, Seo-gu, Incheon, 22689
Country/territory	Republic of Korea
Tel	+82-32-560-7410
Fax	+82-32-568-2042

Collaborator(s)

NO	126
Acronym	ME
Name	Ministry of Environment, Repulbic of Korea

Aim of Observation

Background observation

Data Time zone

UTC+09:00

Unit

ppb

Calibration Scale

9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CH4 X2004

Instrument(s)

9999-12-31 00:00:00 - 9999-12-31 23:59:59: GC 3800, Varian
GC : GC 3800
Detector : FID
Detector Temp. : 250 Celsius
Oven Temp. : 65 Celsius (15 min)
Flow rate : 60 mL/min
Column type : Porapak Q 80/100 mesh (1 m× 1/8"× 2 mm SS)
Injection volume : 2 mL
Valve Temp. : 120 Celsius (Gas chromatography (FID))

Intake Height above ground level

9999-12-31 00:00:00 - 9999-12-31 23:59:59: 10 (m)

Sampling Frequency

Unknown

Measurement Calibration

NOAA04 scale (a gravimetrically-prepared CH4 standard scale) results in CH4 mole fractions that are a factor of 1.0124 greater than previous NOAA methane measurement scale (Dlugokencky et al., 2005).

Data Processing

1. All data with obvious sampling or instrument operation problems are rejected.
2. The hourly data divide into two groups, background and pollution, by a statistical method.
3. To eliminate local effect, the hourly data in the following wind sectors are rejected.
WD=67.5° with wind speed < 22 m/s
WD=22.5, 45, 90, 112.5° with wind speed < 11 m/s
wind speed < 3 m/s
4. The daily data with the number of hourly data less than 7 are rejected.
5. Daily data are calculated from selected hourly data.
6. Monthly data are calculated using the daily data.

Processing for averaging

[Hourly] 1. All data with obvious sampling or instrument operation problems are rejected.
2. The hourly data divide into two groups, background and pollution, by a statistical method.
3. To eliminate local effect at a pollution group, the hourly data in the following wind sectors are rejected.
WD=67.5° with wind speed < 22 m/s
WD=22.5, 45, 90, 112.5° with wind speed < 11 m/s
wind speed < 3 m/s
4. The daily data with the number of hourly data less than 7 are rejected.
[Daily] Daily data are calculated from selected hourly data.
[Monthly] Monthly data are calculated using the daily data.

Original Data Quality Flag

Data Quality Flag (Valid/Invalid)

Observation Status

Temporarily suspended

Description

To track the progress of 'Global Greenhouse Effect' on the Korean peninsula with investigating the concentration of greenhouse gases and their variations.

Meteorological Data Availability
(1: Available)

Wind direction:
Wind speed:
Relative humidity:
Precipitation amount:
Air pressure:
Air temperature:
Dew point temperature:
Sea water temperature:
Sea surface water temperature:
Sea water salinity:
Sea surface water salinity:

Meteorological Data Description

Meteorological data may remain as first provided, even when greenhouse gas data are updated.

No DOI available

Related information

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 2025-09-16
All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2024-09-24
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

Geolocation Point

Latitude (north: +; south: -)	33.29382
Longitude (east: +; west: -)	126.16283

GAW Data Policy

Citation format

This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.

Jiyoung Kim (GERC), Eunjung Kim (GERC), Atmospheric CH₄ at Gosan by National Institute of Environmental Research, dataset published as CH₄_GSN2025_surface-insitu_GERC_data1 at WDCGG, ver. 2025-01-01-0052 (Reference date^*: YYYY/MM/DD)

* As the reference date, please indicate the date you downloaded the files.

Reference(s)

No data available

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