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Dataset

 
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Gridded Global Surface Ozone Metrics data (1971-2015) for Atmospheric Chemistry Model Evaluation - version 2.7

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2015-12-21
DOI Publication Date: 2016-02-02
Download Stats: last 12 months

Abstract

This dataset consists of version 2.7 gridded surface ozone metrics for atmospheric chemistry model evaluation. These data have global coverage on both monthly and annual timescales from 1971-2015. Multiple model resolutions were used and can be easily identified within the filename.

Data are stored as NetCDF-4 files, with one file per model resolution at each time resolution. The files hold gridded surface ozone data from multiple databases (WMO GAW, EPA CASTNET, EPA AQS, Canadian CAPMON, Canadian NAPS, European EMEP, European AirBase, East Asian Acid Deposition Monitoring Network EANET), plus metadata. Metrics include the moments of the distribution, percentiles, maximum daily eight-hour average (MDA8), SOMO35, AOT40, and metrics related to air quality regulatory thresholds. In addition, metadata for all contributing sites (e.g. Site name, latitude, longitude) are included in each file.

Citable as:  Evans, M.J.; Sofen, E.D. (2016): Gridded Global Surface Ozone Metrics data (1971-2015) for Atmospheric Chemistry Model Evaluation - version 2.7. Centre for Environmental Data Analysis, 02 February 2016. doi:10.5285/897a3958-5bfc-4311-9bb0-01134bf6aefa. http://dx.doi.org/10.5285/897a3958-5bfc-4311-9bb0-01134bf6aefa
Abbreviation: Not defined
Keywords: Ozone

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No releated previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data were processed by the authors and delivered to CEDA for archiving

File Format:
NetCDF

Process overview

  • long_name: 25th percentile of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: percentile25_mole_fraction_of_ozone_in_air
  • var_id: 25Percentile_Gridded_Ozone
  • units: ppbv
  • names: percentile25_mole_fraction_of_ozone_in_air, 25th percentile of gridded hourly ozone mixing ratios (ppbv)
  • var_id: 75Percentile_Gridded_Ozone
  • units: ppbv
  • long_name: 75th percentile of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: percentile75_mole_fraction_of_ozone_in_air
  • names: 75th percentile of gridded hourly ozone mixing ratios (ppbv), percentile75_mole_fraction_of_ozone_in_air
  • long_name: 95th percentile of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: percentile95_mole_fraction_of_ozone_in_air
  • var_id: 95Percentile_Gridded_Ozone
  • units: ppbv
  • names: 95th percentile of gridded hourly ozone mixing ratios (ppbv), percentile95_mole_fraction_of_ozone_in_air
  • long_name: 99th percentile of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: percentile99_mole_fraction_of_ozone_in_air
  • var_id: 99Percentile_Gridded_Ozone
  • units: ppbv
  • names: percentile99_mole_fraction_of_ozone_in_air, 99th percentile of gridded hourly ozone mixing ratios (ppbv)
  • units: ppbv hr
  • standard_name: AOT40forest_mole_fraction_of_ozone_in_air
  • var_id: AOT40forest_Gridded_Ozone
  • long_name: AOT40 of gridded hourly ozone mixing ratios (ppbv-hr) calculated Apr-Sept 0800-2000 longitudinal local time
  • names: AOT40forest_mole_fraction_of_ozone_in_air, AOT40 of gridded hourly ozone mixing ratios (ppbv-hr) calculated Apr-Sept 0800-2000 longitudinal local time
  • units: ppbv hr
  • long_name: AOT40 of gridded hourly ozone mixing ratios (ppbv-hr) calculated May-July 0800-2000 longitudinal local time
  • standard_name: AOT40crop_mole_fraction_of_ozone_in_air
  • var_id: AOT40crop_Gridded_Ozone
  • names: AOT40crop_mole_fraction_of_ozone_in_air, AOT40 of gridded hourly ozone mixing ratios (ppbv-hr) calculated May-July 0800-2000 longitudinal local time
  • standard_name: DataFrac
  • var_id: DataFrac
  • long_name: Data completeness fraction - number of hours and sites with data divided by total number of site x hours
  • names: DataFrac, Data completeness fraction - number of hours and sites with data divided by total number of site x hours
  • long_name: Fourth highest maximum daily 8-hour average (MDA8) of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: fourth_mda8_mole_fraction_of_ozone_in_air
  • var_id: FourthHighestMDA8_Gridded_Ozone
  • units: ppbv
  • names: fourth_mda8_mole_fraction_of_ozone_in_air, Fourth highest maximum daily 8-hour average (MDA8) of gridded hourly ozone mixing ratios (ppbv)
  • long_name: Kurtosis of gridded hourly ozone mixing ratios; zero centered (ppbv)
  • standard_name: kurtosis_mole_fraction_of_ozone_in_air
  • var_id: Kurtosis_Gridded_Ozone
  • names: Kurtosis of gridded hourly ozone mixing ratios; zero centered (ppbv), kurtosis_mole_fraction_of_ozone_in_air
  • units: m
  • long_name: Maximum site altitude (m)
  • standard_name: altitude
  • var_id: Maximum_Altitude
  • names: altitude, Maximum site altitude (m)
  • long_name: Mean maximum daily 8-hour average (MDA8) of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: mda8_mole_fraction_of_ozone_in_air
  • var_id: MeanMDA8_Gridded_Ozone
  • units: ppbv
  • names: mda8_mole_fraction_of_ozone_in_air, Mean maximum daily 8-hour average (MDA8) of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: mole_fraction_of_ozone_in_air
  • long_name: Mean of gridded hourly ozone mixing ratios (ppbv)
  • var_id: Mean_Gridded_Ozone
  • units: ppbv
  • names: mole_fraction_of_ozone_in_air, Mean of gridded hourly ozone mixing ratios (ppbv)
  • units: m
  • var_id: Mean_Altitude
  • standard_name: altitude
  • long_name: Mean site altitude (m)
  • names: altitude, Mean site altitude (m)
  • long_name: Median (50th Percentile) of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: median_mole_fraction_of_ozone_in_air
  • var_id: Median_Gridded_Ozone
  • units: ppbv
  • names: Median (50th Percentile) of gridded hourly ozone mixing ratios (ppbv), median_mole_fraction_of_ozone_in_air
  • units: m
  • standard_name: altitude
  • long_name: Minimum site altitude (m)
  • var_id: Minimum_Altitude
  • names: altitude, Minimum site altitude (m)
  • var_id: DaysMDA8_ge_60ppb_Gridded_Ozone
  • long_name: Number of days with maximum daily 8-hour average (MDA8) of gridded hourly ozone mixing ratios greater than or equal to 60 ppbv (ppbv)
  • standard_name: days
  • names: days, Number of days with maximum daily 8-hour average (MDA8) of gridded hourly ozone mixing ratios greater than or equal to 60 ppbv (ppbv)
  • units: ppbv hr
  • long_name: SOMO35 gridded hourly ozone mixing ratios (ppbv-hr)
  • standard_name: SOMO35_mole_fraction_of_ozone_in_air
  • var_id: SOMO35_Gridded_Ozone
  • names: SOMO35 gridded hourly ozone mixing ratios (ppbv-hr), SOMO35_mole_fraction_of_ozone_in_air
  • long_name: Skewness of gridded hourly ozone mixing ratios (ppbv)
  • standard_name: skew_mole_fraction_of_ozone_in_air
  • var_id: Skewness_Gridded_Ozone
  • names: Skewness of gridded hourly ozone mixing ratios (ppbv), skew_mole_fraction_of_ozone_in_air
  • long_name: Standard Deviation between sites going into a grid box averaged over hours within a time interval (See eq. 3, Sofen et al., ESSD, 2015)
  • standard_name: Standard_Deviation_Sites
  • var_id: Std_Dev_Sites
  • units: ppbv
  • names: Standard Deviation between sites going into a grid box averaged over hours within a time interval (See eq. 3, Sofen et al., ESSD, 2015), Standard_Deviation_Sites
  • var_id: Std_Dev_Gridded_Ozone
  • units: ppbv
  • long_name: Standard deviation of gridded hourly ozone mixing ratio within an averaging time interval (See eq. 2, Sofen et al., ESSD, 2015)
  • standard_name: std_mole_fraction_of_ozone_in_air
  • names: std_mole_fraction_of_ozone_in_air, Standard deviation of gridded hourly ozone mixing ratio within an averaging time interval (See eq. 2, Sofen et al., ESSD, 2015)
  • long_name: metadata fields
  • var_id: meta_fields
  • names: metadata fields
  • long_name: metadata parameter values
  • var_id: metadata_values
  • names: metadata parameter values
  • standard_name: mole_fraction_of_ozone_in_air
  • long_name: number of sites with data in a gridbox for each time interval
  • var_id: count_Nsites
  • names: mole_fraction_of_ozone_in_air, number of sites with data in a gridbox for each time interval
  • var_id: SITE_ID
  • long_name: station name abbreviation
  • names: station name abbreviation

Co-ordinate Variables

  • standard_name: latitude
  • var_id: latitude
  • long_name: latitude
  • units: degrees_north
  • names: latitude
  • units: degrees_east
  • standard_name: longitude
  • long_name: longitude
  • var_id: longitude
  • names: longitude
  • long_name: time
  • standard_name: time
  • var_id: time
  • names: time
Coverage
Temporal Range
Start time:
1971-01-01T00:00:00
End time:
2015-12-31T23:59:59
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°