sasktran2.optical.O3BirkWagner#
- class sasktran2.optical.O3BirkWagner[source]#
Bases:
OpticalDatabaseGenericAbsorberTabulated high resolution UV cross-sections of O3 measured by Birk and Wagner.
This database is useful for UV ozone absorption calculations in the Hartley/Huggins region. The raw Zenodo archive contains measured absorption cross sections and uncertainties for six temperatures:
193 K213 K233 K253 K273 K293 KThe wavelength grid is common to all six tables and spans approximately 243.9 nm to 346.0 nm. The wavelength grid is used directly as a vacuum wavelength grid; an overlap comparison with the independently vacuum-labelled Serdyuchenko dataset shows the Huggins-band structure is aligned as-is and shifted if an air-to-vacuum conversion is applied. Cross sections are provided by the source files in cm^2/molecule and converted internally to m^2/molecule.
- Data Source
The data are from the ESA SEOM-IAS ozone UV absorption cross-section database created by M. Birk and G. Wagner at DLR for improved atmospheric spectroscopy in support of Sentinel-5P/TROPOMI. The source archive also contains uncertainty columns and polynomial coefficients; this class uses the measured tabulated cross sections.
The source files are downloaded from Zenodo record 1485588 when the local NetCDF cache is missing. Downloading requires the optional
zenodo-getpackage, available through thesasktran2[zenodo]extra.References
Birk, M. and Wagner, G. “ESA SEOM-IAS - Measurement and ACS database O3 UV region.” Zenodo, 2018. doi:10.5281/zenodo.1485588.
- Raises:
ImportError – If the data must be downloaded and zenodo-get is not installed
OSError – If the data could not be downloaded or converted
- __init__() None[source]#
Tabulated high resolution UV cross-sections of O3 measured by Birk and Wagner.
This database is useful for UV ozone absorption calculations in the Hartley/Huggins region. The raw Zenodo archive contains measured absorption cross sections and uncertainties for six temperatures:
193 K213 K233 K253 K273 K293 KThe wavelength grid is common to all six tables and spans approximately 243.9 nm to 346.0 nm. The wavelength grid is used directly as a vacuum wavelength grid; an overlap comparison with the independently vacuum-labelled Serdyuchenko dataset shows the Huggins-band structure is aligned as-is and shifted if an air-to-vacuum conversion is applied. Cross sections are provided by the source files in cm^2/molecule and converted internally to m^2/molecule.
- Data Source
The data are from the ESA SEOM-IAS ozone UV absorption cross-section database created by M. Birk and G. Wagner at DLR for improved atmospheric spectroscopy in support of Sentinel-5P/TROPOMI. The source archive also contains uncertainty columns and polynomial coefficients; this class uses the measured tabulated cross sections.
The source files are downloaded from Zenodo record 1485588 when the local NetCDF cache is missing. Downloading requires the optional
zenodo-getpackage, available through thesasktran2[zenodo]extra.References
Birk, M. and Wagner, G. “ESA SEOM-IAS - Measurement and ACS database O3 UV region.” Zenodo, 2018. doi:10.5281/zenodo.1485588.
- Raises:
ImportError – If the data must be downloaded and zenodo-get is not installed
OSError – If the data could not be downloaded or converted
Methods
__init__()Tabulated high resolution UV cross-sections of O3 measured by Birk and Wagner.
atmosphere_quantities(atmo, **kwargs)cross_section_derivatives(wavelengths_nm, ...)cross_sections(wavelengths_nm, altitudes_m, ...)optical_derivatives(atmo, **kwargs)