Dataset
ESA Precursors for Aerosols and Ozone Climate Change Initiative (Precursors_cci): Precursors morning SCIAMACHY NO2 L3 data products, version 1.0
Status: Pending
Online Status: ONLINE
Publication State: Preview
Publication Date:
THIS RECORD HAS NOT BEEN PUBLISHED YET - PREVIEW ONLY!
Abstract
This nitrogen dioxide (NO2) climate data record (CDR) is a newly developed monthly Level 3 product derived from measurements by the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) onboard the ESA Environmental Satellite (ENVISAT). The dataset has been generated within the framework of the ESA Climate Change Initiative (CCI) Precursors for Aerosols and Ozone project.
The SCIAMACHY NO2 Level 3 product contains comprehensive information, including essential variables (e.g., total, stratospheric, and tropospheric NO2 vertical column densities) and their uncertainties, observation viewing geometries, auxiliary input variables (e.g., surface albedo and cloud properties), and vertically resolved information (e.g., a priori profiles and averaging kernels) for each grid cell. The dataset is available at two spatial resolutions: 0.5° × 0.5° and 1.0° × 1.0°.
The version number is 1.0. The data are provided in NetCDF format.
Citable as: [ PROVISIONAL ] German Aerospace Center; Seo, S. (9999): ESA Precursors for Aerosols and Ozone Climate Change Initiative (Precursors_cci): Precursors morning SCIAMACHY NO2 L3 data products, version 1.0. NERC EDS Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/81185d4545484f3fa53ac01ef1a7410c
Abbreviation: Not defined
Keywords: Nitrogen Dioxide, NO2, SCIAMACHY, ENVISAT, Climate Data Record, CDR, CCI
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_precursors_for_aerosols_and_ozone_terms_and_conditions.pdf When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
Data were produced by the project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA). |
| Data Quality: |
See dataset associated documentation
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| File Format: |
netcdf
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Process overview
This dataset was generated by a combination of instruments deployed on platforms
and computations as detailed below.
Instrument/Platform pairings
| Envisat - SCIAMACHY | Deployed on: Envisat |
Computation Element: 1
| Title | Computation process of the gridded nitrogen dioxide (NO2) monthly Level 3 data from SCIAMACHY/ENVISAT |
| Abstract | The SCIAMACHY NO2 Level 3 product was generated using the QA4ECV v1.1 Level 2 product. Only quality-screened Level 2 data were included, applying optimized filtering criteria to ensure data reliability. Monthly Level 3 products were produced by spatial binning onto a regular latitude–longitude grid using an area-weighted averaging approach. The weighting and count vectors are used to consistently apply this weighted averaging during the Level 3 gridding, enabling the calculation of mean values and associated uncertainties. Detailed information on the Level 3 algorithm can be found in the Algorithm Theoretical Basis Document (ATBD). The version number is 1.0. The data are provided in NetCDF format. |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
| Output Description | None |
- units: 1
- var_id: air_mass_factor_clear
- long_name: AMF clear
- units: 1
- var_id: air_mass_factor_troposphere
- long_name: AMF troposphere
- units: degrees_north
- var_id: latitude
- long_name: Latitude
- units: degrees_east
- var_id: longitude
- long_name: Longitude
- units: molec/cm^2
- var_id: NO2_slant_column_number_density
- long_name: NO2 SCD
- units: molec/cm^2
- var_id: NO2_slant_column_number_density_uncertainty
- long_name: NO2 SCD uncertainty
- var_id: tm5_tropopause_layer_index
- long_name: TM5 layer index of the tropopause
- units: Pa
- var_id: tm5_pressure_level_a
- long_name: TM5 sigma values a
- units: Pa
- var_id: tm5_pressure_level_b
- long_name: TM5 sigma values b
- units: 1
- var_id: averaging_kernel
- long_name: averaging kernel
- units: 1
- var_id: cloud_fraction
- long_name: cloud fraction
- units: hPa
- var_id: cloud_pressure
- long_name: cloud optical centroid pressure
- units: 1
- var_id: cloud_radiance_fraction
- long_name: cloud radiance fraction
- units: 1
- var_id: qa_L3
- long_name: data quality assurance value
- units: 1
- var_id: eff_frac_day
- long_name: effective fractional day in local solar time
- units: days
- var_id: eff_date
- long_name: effective number of contributing days
- units: degree
- long_name: relative azimuth angle
- var_id: relative_azimuth_angle
- units: degree
- long_name: solar zenith angle
- var_id: solar_zenith_angle
- units: molec/cm^2
- var_id: stratospheric_NO2_column_number_density
- long_name: stratospheric NO2 VCD
- units: 1
- var_id: surface_albedo
- long_name: surface albedo in the NO2 fit window
- units: hPa
- long_name: surface pressure
- var_id: tm5_surface_pressure
- units: molec/cm^2
- var_id: total_NO2_column_number_density
- long_name: total NO2 VCD
- units: molec/cm^2
- var_id: tropospheric_NO2_column_number_density
- long_name: tropospheric NO2 VCD
- units: molec/cm^2
- var_id: tropospheric_NO2_column_number_density_uncertainty
- long_name: tropospheric NO2 VCD uncertainty
- units: degree
- long_name: viewing zenith angle
- var_id: viewing_zenith_angle
Co-ordinate Variables
- standard_name: time
- var_id: time
- units: days
- long_name: number of days since 1995-01-01
Coverage
Temporal Range
Start time:
2002-08-01T00:00:00
End time:
2012-03-31T23:59:59
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
|
-90.0000° |
Related parties