Login to WDCGG as
Have you completed registration?
Registration and login are needed to download data files.
In line with the GAW Data Policy, users should contact the contributors of all data of interest and propose co-authorship or acknowledgement.


NO 157
Acronym ATOMKI
Name Institute for Nuclear Research
Address 1 Bem tér 18/C
Address 2 H-4026 Debrecen, Hungary
Address 3
Country/Territory Hungary
Website https://www.atomki.hu/en/


Name Laszlo Haszpra
Prefix Mr/Dr
Email haszpra.l@gmail.com
Organization No 157
Organization acronym ATOMKI
Organization name Institute for Nuclear Research
Organization country/territory Hungary
Address 1
Address 2 Bem tér 18/C
Address 3 H-4026 Debrecen, Hungary
Country/territory Hungary
Tel +36-30-454-3309
Last updated date 2022-08-18

NO 28
Acronym HMS
Name Hungarian Meteorological Service
 Background observation
 1994-09-01 00:00:00 - 9999-12-31 23:59:59: WMO CO2 X2019
 1994-09-01 00:00:00 - 2007-08-09 12:59:59: Li-Core Model LI-6251(NDIR)
 2007-08-09 13:00:00 - 2020-02-20 23:59:59: Li-Cor Model LI-7000(NDIR)
 2020-02-21 00:00:00 - 9999-12-31 23:59:59: Picarro Model G2301(CRDS)
 1994-09-01 00:00:00 - 9999-12-31 23:59:59: 115 (m)
 8 minutes
 1 September 1994 – 20 February 2020: Every 202 minutes a full four-point calibration is carried out using standards produced and certified by NOAA CMDL. The response function is calculated as a quadratic function. Every 32 minutes a target gas is measured. Between two 4-point calibrations, the response function is shifted following the drift of the target gas signal.
From 21 February 2020: With the introduction of a high stability new analyzer the frequency of the 4-point calibration is reduced to one per month, and no target measurement is performed. The negligible drift of the response function is followed by linear interpolation between the calibrations.
 The basic measurement period is two minutes, consisting of one-minute flushing and one-minute signal integration. Each one-minute average is based on 6-7 measurements. The multiport selector valve steps through the four monitoring elevation levels in eight minutes. Typically 7 data are recorded at each measurement elevation every hour.
 [Hourly] Hourly data are taken from the arithmetic mean of observed data for one hour after the technically bad data are rejected.
 [Daily] Daily data are calculated as the arithmetic mean of hourly data measured between 12 h and 16 h local standard time (early afternoon values having expanded spatial representativeness).
 [Monthly] Monthly data are calculated as the arithmetic mean of the daily (early afternoon) data if at least 10 daily data are available.
 HMS was the operator of the station and performed the measurements between 1994 and 31 Aug 2020.
Since 1 Sept 2020 ATOMKI is the operator of the station and it performs the reported measurements. Since 1 September ATOMKI handles the whole historic data series.
The meteorological data observed by HMS from 1994 to 2018 are available in Yearly fixed datasets until 2021.
 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 CO2 data contributed to WDCGG by GAW stations and mobiles by 2022-09-07
Geolocation Point
Latitude (north: +; south: -) 46.9559
Longitude (east: +; west: -) 16.6521

 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.
Laszlo Haszpra (ATOMKI), Atmospheric CO2 at Hegyhátsál háttérszennyettség-mérő állomás by Institute for Nuclear Research , dataset published as CO2_HUN_ tower-insitu_ATOMKI_tower115 at WDCGG, ver. 2022-02-22-0835 (Reference date*: YYYY/MM/DD)

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


1  Haszpra, L., (1999), On the representativeness of carbon dioxide measurements. J. of Geophysical Research 104D, 26953-26960.
Haszpra, L., et al., (2001) , Measuring system for the long-term monitoring of biosphere/atmosphere exchange of carbon dioxide , Journal of Geophysical Research , 106D , 3057--3070 .
Haszpra, L., et al., (2005) , Long term tall tower carbon dioxide flux monitoring over an area of mixed vegetation , Agricultural and Forest Meteorology , 132 , 58-77.
Haszpra, L., et al., (2008) , Trends and temporal variations of major greenhouse gases at a rural site in Central Europe. , Atmospheric Environment , 42 , 8707--8716 .
Haszpra, L., et al., (2015) , How well do tall-tower measurements characterize the CO2 mole fraction distribution in the planetary boundary layer? , Atmos. Meas. Tech. , 8 , 1657-1671 .