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
2025-01-01-0041 (Last updated: 2024-12-24)File
This data set is submitted by KSNU.
In line with the GAW Data Policy, users should contact the contributors of all data of interest and propose co-authorship or acknowledgement.
Organization
| NO | 41 |
|---|---|
| Acronym | KSNU |
| Name | Kyrgyz National University |
| Address 1 | |
| Address 2 | |
| Address 3 | 720033, Biskek, Frunze street 547 |
| Country/Territory | Kyrgyzstan |
| Website | http://www.university.kg/ |
Contact(s)
| Name | V. Sinyakov |
|---|---|
| Prefix | Dr. |
| sinvalery@yandex.ru | |
| Organization No | 41 |
| Organization acronym | KSNU |
| Organization name | Kyrgyz National University |
| Organization country/territory | Kyrgyzstan |
| Address 1 | |
| Address 2 | |
| Address 3 | Manas Street 101, Bishkek, 720033, Kyrgyz Republic |
| Country/territory | Kyrgyzstan |
| Tel | |
| Fax | +996-312-282859 |
| Last updated date | 2018-06-01 |
|
|||||||
| Background observation | |||||||
| UTC | |||||||
| ppb | |||||||
|
9999-12-31 00:00:00 - 9999-12-31 23:59:59: Infrared Spectrophotometer based on MDR-41 monochromator manufactured by LOMO, St-Petersburg, Russia(Light absorption analysis (IR, except NDIR) ) |
|||||||
| Unknown | |||||||
| calibration scale : Observer's standard | |||||||
| The data acquisition system provides three minutes mean raw data. Invalid data caused by local impact, malfunction or other effects were recognised by comparison/correlation with other trace substances and meteorological data or with information from the station logbook and were rejected. | |||||||
|
[Hourly] [Daily] Arithmetic means are calculated from valid hourly data. [Monthly] Arithmetic means are calculated from valid daily data. |
|||||||
| Temporarily suspended | |||||||
|
Sampling and Analysis Frequency : continuously during the day depending on sky conditions The measurement method of CH4 is based on the record of solar radiation that passed through the atmosphere with the spectral resolution of 0.3cm-1 in the operation spectral range of wave numbers 2990.0 - 3006.0 cm-1 with the rotational line P2 of the absorption band of methane with the center near 3018.92 cm-1. After the operation test section is registered, the level of a signal at the frequency 3018 cm-1 (corresponding to the center of the Q-branch) is recorded. For the atmospheric conditions complete absorption of the solar radiation is observed at this frequency. In such a way the "zero-line" (the level of the receiving-registration system signal without absorption) is determined and the radiation scattered at the monochromator optical elements is excluded. Adjustment of ordinates in the spectrum is made over methane lines (2999.02 cm-1) and water vapor (3001.32 cm-1) the location of which is determined from the calculation results and does not depend on measurement conditions. As a characteristic depending on a methane content an atmospheric transmission function experimentally determined from the spectrogram within the spectral range of 2997.5 t 3000.7 cm-1 is used. The record of the solar radiation spectra is made during the day at different solar zenith angles. The content of CH4 measured along the inclined path are recalculated to the CH4 amount corresponding to the vertical atmospheric column. Vertical distribution of CH4 in the atmosphere unknown before hand are replaced by his volumetric relative concentration constant with altitude, that corresponds to an assumption on uniform mixing of this gas in the atmosphere. In this case the altitude-averaged relative concentration of CH4 are the result of the spectroscopic measurements. Such a presentation of the data of spectroscopic measurements at a comparison with data of CH4 concentration in air near the ground allows one to estimate the deviations in real vertical concentration distribution from the assumed constant concentration of the gases in the atmospheric depth. The instrumentation error of a single measurement of CH4 is no more than ±4%. measurement range: 2990.0 - 3006.0 cm-1 with the rotational line P2 of the absorption band of methane with the center near 3018.92 cm-1 spectral resolution: 0.3 cm-1 |
|||||||
|
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 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 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 |
|
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."
Citation format
This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.
Please follow the citation format which the data providers or owners indicate.
V. Sinyakov (KSNU),
Atmospheric CH4
at Issyk-Kul by Kyrgyz National University
,
dataset published as CH4_ISK2009_
surface-remote_KSNU_data1 at WDCGG,
ver. 2025-01-01-0041 (Reference date*: YYYY/MM/DD)
* As the reference date, please indicate the date you downloaded the files.
* As the reference date, please indicate the date you downloaded the files.
