European Obspack compilation of atmospheric methane data from ICOS and non-ICOS European stations for the period 1984-2023; obspack_ch4_466_GVeu_20230913

ICOS RI, Bergamaschi, P., Colomb, A., De Mazière, M., Emmenegger, L., Kubistin, D., Lehner, I., Lehtinen, K., Lund Myhre, C., Marek, M., O'Doherty, S., Platt, S.M., Plaß-Dülmer, C., Ramonet, M., Apadula, F., Arnold, S., Blanc, P.-E., Brunner, D., Chen, H., Chmura, L., Conil, S., Couret, C., Cristofanelli, P., Delmotte, M., Forster, G., Frumau, A., Gheusi, F., Hammer, S., Haszpra, L., Hatakka, J., Heliasz, M., Henne, S., Hoheisel, A., Kneuer, T., Laurila, T., Leskinen, A., Leuenberger, M., Levin, I., Lindauer, M., Lunder, C., Mammarella, I., Manca, G., Manning, A., Martin, D., Meinhardt, F., Mölder, M., Müller-Williams, J., Necki, J., Ottosson-Löfvenius, M., Philippon, C., Piacentino, S., Pitt, J., Rivas-Soriano, P., Scheeren, B., Schumacher, M., Sha, M.K., Smith, P., Spain, G., Steinbacher, M., Sørensen, L.L., Vermeulen, A., Vítková, G., Xueref-Remy, I., di Sarra, A., Conen, F., Kazan, V., Roulet, Y.-A., Biermann, T., Heltai, D., Hensen, A., Hermansen, O., Komínková, K., Laurent, O., Levula, J., Lopez, M., Marklund, P., Pichon, J.-M., Schmidt, M., Stanley, K., Trisolino, P., ICOS Carbon Portal, ICOS Atmosphere Thematic Centre, ICOS Flask And Calibration Laboratory, ICOS Central Radiocarbon Laboratory, 2023. European Obspack compilation of atmospheric methane data from ICOS and non-ICOS European stations for the period 1984-2023; obspack_ch4_466_GVeu_20230913.

Atmospheric Greenhouse Gas Mole Fractions of CH4 collected by the ICOS ATC, covering the period 1984-2023, including final quality-controlled Level 2 ICOS data, release 2022-1 and NRT data up to September 2023. During the most recent period, a selected set of stations, after being labelled as ICOS stations, observations follow the ICOS Atmospheric Station specification V2.0. Measurements and data processing for all time series is described in Ramonet et al., 2020. All concentrations are calibrated to the WMO CH4 X2004A mole fraction scale in mole/mole.

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Data licence: CC4BY CC4BY

Methane hourly observations, annual trend and seasonal fitted trend at station Trainou (France). Light green is historic data, dark green is ICOS L2 final quality controlled data and red is NRT data. Red dots are monthly averaged Mauna Loa observations by NOAA.
The network of atmospheric stations