Model Data
This dataset provides gridded and regional ozone concentrations for North America and Europe from 2000 to 2018, including maximum daily 8-hour average ozone (MDA8) and corresponding contributions from nitrogen oxides (NOₓ) and volatile organic compounds (VOCs). The dataset contains annual gridded fields for both regions, regional peak-season ozone (PSO) time series for HTAP Tier 2 receptor regions, and month-centred average (MCA) ozone statistics for the periods 2000–2004, 2014–2018, and 2000–2018. NOₓ-tagged (NT) and VOC-tagged (VT) ozone contributions are provided for all data products.
Ozone and other key fields (2018-2024) over the northeastern and mid-Atlantic US modeled by WRF-Chem, relevant to the TOAR-II activity, Version 1.
This dataset provides a global chemical reanalysis of atmospheric composition for 2005–2021 by assimilating observations from OMI, GOME-2, SCIAMACHY, MLS, TES, and MOPITT into a global chemical transport model using an ensemble Kalman filter approach. The product includes meteorological fields, atmospheric concentrations of multiple chemical species, and emissions of NOₓ, CO, SO₂, and lightning NOₓ. Data are available at 1.1° × 1.1° resolution on 27 pressure levels, with two-hourly, six-hourly, and monthly temporal resolutions. Methodological details are provided by Miyazaki et al. (2015, 2017, 2019, 2020a, 2020b). You can read more about this dataset here.
This dataset provides global three-dimensional simulations of tropospheric ozone (TO3) from the TOMCAT chemical transport model for the period 2008–2017. Ozone fields are available at two satellite local solar overpass times (09:30 and 13:30 LST) on a 2.8° × 2.8° horizontal model grid. The dataset includes atmospheric pressure and temperature fields, providing vertical information on ozone distributions up to 10 hPa. The ozone data have units of mass mixing ratio (1.0E-9). These model simulations were used in the study “Quantifying the tropospheric ozone radiative effect and its temporal evolution in the satellite era.” This work was undertaken as part of the long-term science activities of the NERC National Centre for Earth Observation.
This dataset provides global ozone (O₃) concentrations for 2006–2016 derived from GEOS-Chem simulations at 2° × 2.5° horizontal resolution. The simulations were constrained using OMI NO₂ observations from the NASA standard product. Ozone concentrations were generated using NOₓ emissions from the dataset described by Qu et al. (2020).
This dataset provides daily mean ozone data from the TOMCAT three-dimensional chemical transport model and from satellite products derived from the IASI and GOME-2 instruments. The satellite observations were retrieved using schemes developed by RAL Space, as described by Miles et al. (2015) and Pope et al. (2021). The TOMCAT model data are available for 2017–2021, the IASI data for 2008–2023, and the GOME-2 data for 2015–2020.
This dataset provides monthly mean regional time series of lower tropospheric column ozone (0–6 km, or surface to 450 hPa) for North America, Europe, and East Asia from 2008 to 2017. The dataset combines three satellite products and simulations from the UKESM1.0 Earth System Model. The regions are defined using the HTAP-2 land mask. The satellite products include ozone retrievals from OMI produced by RAL Space, as well as the IASI FORLI and IASI SOFRID retrieval schemes. These data were used to investigate long-term trends and discrepancies among satellite-derived lower tropospheric ozone products.
This dataset contains prescribed ozone forcing fields developed for use in CMIP climate model simulations. The files provide externally specified atmospheric ozone concentrations required by models that treat ozone as an exogenous forcing, supporting consistent simulations across participating modelling centres.
Two versions of the ozone forcing are provided to account for an identified issue affecting pre-industrial and historical simulations. For additional information on the dataset, its versions, recommended usage, and technical documentation, please refer to the referenced website.
This dataset contains the output of a free-running hindcast simulation performed with the ECHAM/MESSy Atmospheric Chemistry (EMAC) model for the period 1950–2019. The simulation was conducted at T42L90MA horizontal and vertical resolution following the CCMI-2022 refD1 protocol (see
SPARC, 2021: SPARC Newsletter No. 57, July 2021, 39 pp., available at http://www.aparc-climate.org/publications/newsletter).
The dataset includes meteorological variables simulated by the ECHAM5 (v5.3.02) General Circulation Model, as well as atmospheric chemical species related to ozone contained in the tr_Ox_HOx output files.
This dataset contains the output of a specified-dynamics hindcast simulation performed with the ECHAM/MESSy Atmospheric Chemistry (EMAC) model for the period 1979–2019. The simulation was conducted at T42L90MA horizontal and vertical resolution following the CCMI-2022 refD1 protocol (see see
SPARC, 2021: SPARC Newsletter No. 57, July 2021, 39 pp., available at http://www.aparc-climate.org/publications/newsletter). The specified dynamics were achieved by nudging the EMAC model towards ECMWF ERA5 reanalysis data using Newtonian relaxation. The dataset includes meteorological variables simulated by ECHAM5 (v5.3.02) and atmospheric chemical species related to ozone contained in the tr_Ox_HOx output files.
This dataset contains open biomass burning emissions made available as a forcing dataset for Coupled Model Intercomparison Project Phase 7 (CMIP7) global chemistry-climate models. It provides standardized emissions data to support consistent climate model simulations. For additional information on the dataset, version history, recommended usage, and technical documentation, please refer to here.
This dataset contains surface flux emissions produced by the Community Emissions Data System (CEDS), March 18, 2025 release, for use in atmospheric and climate modelling studies. It provides emissions of SO₂, NOₓ, BC, OC, NH₃, NMVOC, CO, CO₂, CH₄, and N₂O, disaggregated by country, sector, and fuel. Time series are available from 1750–2023 for all species except CH₄ and N₂O, which are provided from 1970–2023, with extended global trends from 1750 available as supplementary data.