European Obspack compilation of atmospheric nitrous oxide data from ICOS and non-ICOS European stations for the period 1996-2025; obspack_n2o_466_GVeu_v11.0_20250820

Description

August 2025

Atmospheric Greenhouse Gas Mole Fractions of N2O collected by the ICOS ATC, covering the period 1996-2025, including final quality-controlled Level 2 ICOS data, release 2025-1 and NRT data up to 19 August 2025. 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 N2O 2006A mole fraction scale in mole/mole.

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Data licence: CC4BY CC4BY

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ICOS RI, Bergamaschi, P., Colomb, A., Emmenegger, L., Harris, E., Kubistin, D., Leuenberger, M., Marek, M.V., O'Doherty, S., Plaß-Dülmer, C., Ramonet, M., Rennick, C., Schmidt, M., Stanley, K., Arnold, S., Blessing, C., Chen, H., Conil, S., Couret, C., Cristofanelli, P., Forster, G., Frumau, A., Gerbig, C., Hammer, S., Haszpra, L., Hatakka, J., Heliasz, M., Hensen, A., Hoheisel, A., Jagoda, P., Kneuer, T., Larmanou, E., Laurila, T., Levin, I., Lindauer, M., Lopez, M., Manca, G., Manning, A., Marklund, P., Martin, D., Meinhardt, F., Molnár, M., Müller-Williams, J., Nęcki, J., Ottosson-Löfvenius, M., Pitt, J., Rivas-Soriano, P., Scheeren, B., Schumacher, M., Smith, P., Steinbacher, M., Vermeulen, A., Vítková, G., Yver-Kwok, C., Zwerschke, E., Arriga, N., Conen, F., Henne, S., Kazan, V., Roulet, Y.-A., Biermann, T., Delmotte, M., Komínková, K., Laurent, O., Montaguti, S., Pichon, J.-M., Trisolino, P., Bracci, A., Busetto, M., Bán, S., Bäni, L., Calzolari, F., Elsasser, M., Fratticioli, C., Friedli, J., Fuente-Lastra, M., Grossmann, J., Hanuš, V., Helle, J., Laitinen, A., Langrene, L., Legendre, V., Lopez, D., Mandrick, Z., Molder, M., Rigouleau, L.-J., Schreiber, M., Steger, D., Weyrauch, D., van den Bulk, P., Álvarez Hernández, A., ICOS Carbon Portal, ICOS Atmosphere Thematic Centre, ICOS Flask And Calibration Laboratory, ICOS Central Radiocarbon Laboratory, 2025. European Obspack compilation of atmospheric nitrous oxide data from ICOS and non-ICOS European stations for the period 1994-2025; obspack_n2o_466_GVeu_v11.0_20250820. https://doi.org/10.18160/T18D-C85R
Nitrous oxide hourly observations, annual trend and seasonal fitted trend at station Weybourne (United Kingdom). Light green is historic data, dark green is ICOS L2 final quality controlled data and red is NRT data. Yellow line is monthly averaged Mauna Loa observations by NOAA.
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