Data products

This page summarises the major data products offered by ICOS. These datasets are offered as collections of data and are released under the ICOS CC4BY licence. After the upcoming data releases in 2020 this page will also list ICOS level 1 and NRT data products from the ecosystem and ocean domains. All individual data objects offered by ICOS can be browsed through the main ICOS Carbon Portal data app.

ICOS Near Real Time Observational Data (Level 1)

Near Real-Time growing time series containing data from the atmospheric network of ICOS Research Infrastructure for the stations Gartow, Hohenpeißenberg, Hyltemossa, Ispra, Jungfraujoch, Křešín u Pacova, Lindenberg, Monte Cimone, Norunda, OPE, Pallas, Puy de Dome, SMEAR II (Hyytiälä), Svartberget, Torfhaus, Trainou, and Zeppelin Observatory. This collection contains the NRT hourly averaged data for the mole fractions of CO2 and CH4, measured at the relevant vertical levels of the measurements stations, starting from the latest date of final released Level 2 data or the date of labelling. All stations follow the ICOS Atmospheric Station specification V1.3 (https://www.icos-ri.eu/fetch/ba12290c-3714-4dd5-a9f0-c431b9900ad1;1.0) and are certified as ICOS atmospheric stations Class I or II. Data processing has been performed as described in Hazan et al., 2016 (doi:10.5194/amt-9-4719-2016).

ICOS Final Fully Quality Controlled Observational Data (Level 2)

2019-1 release containing data from the atmospheric network of ICOS Research Infrastructure for 19 stations and 49 vertical levels at Gartow, Hohenpeißenberg, Hyltemossa, Ispra, Jungfraujoch, Křešín u Pacova, Lindenberg, Lutjewad, Monte Cimone, Norunda, OPE, Pallas, Puy de Dome, SMEAR-II, Svartberget, Torfhaus, Trainou, Utö and Zeppelin Observatory. This collection contains the final quality controlled hourly averaged data for the mole fractions of CO2, CH4, CO and meteorological observations measured at the relevant vertical levels of the measurements stations, and where available 14C in CO2 in two-weekly integrated samples, for the period September 2015-April 2019. All stations follow the ICOS Atmospheric Station specification V1.3 (https://www.icos-ri.eu/fetch/ba12290c-3714-4dd5-a9f0-c431b9900ad1;1.0) and are certified as ICOS atmospheric stations Class I or II. Data processing has been performed as described in Hazan et al., 2016 (doi:10.5194/amt-9-4719-2016).

Historic Observational Time Series For ICOS and Non-ICOS Stations

This dataset for historic ambient N2O mole fractions is an important outcome of the FP7 InGOS project (http://www.ingos-infrastructure.eu, Grant Agreement Number 284274). Data from 12 stations have been reprocessed for the period 2000-2015; in some cases involving re-integration of chromatograms and in all cases re-calibrating the time series using updated assigned values for standard gases and target gases. All data have been brought to the same concentration scale (NOAA-2006A). Data have been flagged for identified periods with instrumental or sampling problems. Next to added estimations for measurement uncertainty based on repeatability of the working standards also error estimates are added that represent uncertainty due to lab internal scale consistency, monthly reproducibility, scale transfer and where available comparison with concurrent flask sampling.

This dataset for historic ambient CH4 mole fractions is an important outcome of the FP7 InGOS project (http://www.ingos-infrastructure.eu, Grant Agreement Number 284274). Data from 17 stations have been reprocessed for the period 2000-2015; in some cases involving re-integration of chromatograms and in all cases re-calibrating the time series using updated assigned values for standard gases and target gases. All data have been brought to the same concentration scale (NOAA-2006A). Data have been flagged for identified periods with instrumental or sampling problems. Next to added estimations for measurement uncertainty based on repeatability of the working standards also error estimates are added that represent uncertainty due to lab internal scale consistency, monthly reproducibility, scale transfer and where available comparison with concurrent flask sampling.

This is the release of the observational data product for eddy covariance fluxes at 52 stations in the ecosystem domain, part of them outside the ICOS network, from the Drought-2018 team and covering the period 1989-2018. The data are in the standard format used for the ICOS L2 ecosystem products and also used by other regional networks like AmeriFlux. The processing has been done using the ONEFlux processing pipeline (https://github.com/icos-etc/ONEFlux) and is fully compliant and integrable with the FLUXNET2015 release (https://fluxnet.fluxdata.org/) and other datasets processed with the same pipeline (AmeriFlux, ICOS L2)

Atmospheric Greenhouse Gas Mole Fractions of CO2 collected by the Drought-2018 team, covering the period 1972-2018. Final quality controlled Level 2 data. During the most recent period, a selected set of stations, after being labelled as ICOS stations, follow the ICOS Atmospheric Station specification V1.3. Measurements and data processing for all time series is described in the paper below. All concentrations are calibrated to the WMO X2007 CO2 mole fraction scale in µmole/mole (ppm).

Elaborated Data Products (Level 3)

Global anthropogenic CO2 emissions for 2006-2019 based on EDGARv4.3, fuel type and category specific emissions provided by Greet Janssens-Maenhout (EU-JRC), BP statistics 2019, temporal variations based on MACC-TNO (Denier van der Gon et al. (2011)), temporal extrapolation and disaggregation described in COFFEE (Steinbach et al. 2011)

Ensemble of inverse modelling estimates of European CO2 fluxes for 2006-2015 as part of the EUROCOM inversion intercomparison; monthly fluxes; 0.5 deg. x 0.5 deg.; Supplementary material for Monteil et al., 2019