OPeNDAP Data Access Form for SurfaceNO2_0.0083deg_2019.nc
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dataset: SurfaceNO2_0.0083deg_2019.nc




  • NC_GLOBAL
    • GDAL_AREA_OR_POINT: Area
    • Conventions: CF-1.5
    • GDAL: GDAL 3.1.2, released 2020/07/07
    • title: Nitrogen Dioxide Surface-Level Annual Average Concentrations
    • NCO: netCDF Operators version 4.9.3 (Homepage = http://nco.sf.net, Code = http://github.com/nco/nco)
    • institution: George Washington University, Department of Environmental and Occupational Health
    • source: A land-use regression model (based on 5220 NO2 monitors in 58 countries and land use variables) estimates nitrogen dioxide concentrations for 2010-12. NO2 column densities from the Ozone Monitoring Instrument and MERRA-2 scale the concentrations to other years between 1990 and 2020.
    • references: Anenberg, S. C., Mohegh, A., Goldberg, D. L., Kerr, G. H., Brauer, M., Burkart, K., et al. (2022). Long-term trends in urban NO2 concentrations and associated paediatric asthma incidence: estimates from global datasets. Lancet Planetary Health. 6(1): e49-58. https://doi.org/10.1016/s2542-5196(21)00255-2
    • ShortName: SFC_NITROGEN_DIOXIDE_CONC
    • LongName: Nitrogen Dioxide Surface-Level Annual Average Concentrations
    • Format: netCDF
    • DataSetQuality: The model captures 54% of global NO2 variation with a mean absolute error of 3.7 ppb. Model performance is higher in South America (R2=0.67) and North America, Europe, and Asia (R2=0.52) than in Africa (R2=0.42). Anenberg, Mohegh, et al. (2022 Lancet Planetary Health) compare the dataset in 2019 to observed concentrations from 4348 monitors in the United States, Canada, and Europe in both urban and rurals areas.
    • IdentifierProductDOI: 10.5067/J99FI2U38YRN
    • ProcessingLevel: 4
    • RangeBeginningDate: 2019-01-01
    • RangeBeginningTime: 00:00:00.000000Z
    • RangeEndingDate: 2019-12-31
    • RangeEndingTime: 23:59:59.999999Z
    • SouthBoundingCoordinate: -60.0000000
    • NorthBoundingCoordinate: 75.0000000
    • WestBoundingCoordinate: -180.000000
    • EastBoundingCoordinate: 180.000000
    • history: 2023-02-04 12:27:58 - original file generated using NCO version 4.8.1
    • VersionID: 1.0


crs(Type is String)
  • attributes
    • grid_mapping_name: latitude_longitude
    • long_name: CRS definition
    • longitude_of_prime_meridian: 0.000000000000000
    • semi_major_axis: 6378137.000000000
    • inverse_flattening: 298.2572235630000
    • spatial_ref: GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AXIS[\"Latitude\",NORTH],AXIS[\"Longitude\",EAST],AUTHORITY[\"EPSG\",\"4326\"]]
    • GeoTransform: -179.5512493018 0.008333333300000001 0 74.9495832122 0 -0.008333333300000001
    • string_length: 1
lat[ lat= 0 ..16199] (Type is Float64)
  • attributes
    • standard_name: latitude
    • long_name: latitude
    • units: degrees_north
lon[ lon= 0 ..43079] (Type is Float64)
  • attributes
    • standard_name: longitude
    • long_name: longitude
    • units: degrees_east
SurfaceNO2[ lat= 0 ..16199] [ lon= 0 ..43079] (Grid of Float32 values)
  • attributes
    • long_name: Annual average, surface-level nitrogen dioxide concentrations
    • _FillValue: -999.000000
    • grid_mapping: crs
    • units: ppbv

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