devel:eubrewnetconfiguration
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devel:eubrewnetconfiguration [2022/10/20 07:53] 127.0.0.1 external edit |
devel:eubrewnetconfiguration [2024/03/25 16:00] (current) jlsolano [Cosine Correction] |
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| For the UV temperature correction, the user has to provide | For the UV temperature correction, the user has to provide | ||
| - | * A field with a reference temperature (''Tref'', in ºC), and | + | * A field with a reference temperature (''Tref'', in ºC), and |
| - | * A table with one row for each wavelength (in Angströms) and the corresponding temperature dependence factor (''Tdep'', in 1/ºC). | + | * A table with one row for each wavelength (in Angströms) and the corresponding temperature dependence factor (''Tdep'', in 1/ºC). |
| All this information can be obtained by the experimental characterization described in [[https://acp.copernicus.org/articles/8/3369/2008/|Lakkala et al., Atmos. Chem. Phys., 8, 3369–3383, 2008]] | All this information can be obtained by the experimental characterization described in [[https://acp.copernicus.org/articles/8/3369/2008/|Lakkala et al., Atmos. Chem. Phys., 8, 3369–3383, 2008]] | ||
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| In the configuration, the user can provide | In the configuration, the user can provide | ||
| - | * A table with five columns: angle (between 0 and 90 degrees), and angular responses in the N, S, W, and E directions (**as of February 2022, only the angular response in the N direction is used**) | + | * A table with five columns: angle (between 0 and 90 degrees), and angular responses (measurements from the CR file normalized to the maximum value at 0 degrees) in the N, S, W, and E directions, see the next figure (**as of February 2022, only the angular response in the N direction is used**) |
| - | * Fields with default values for the albedo, Angström's alpha and beta, and the cloud cover. These meteorological parameters will be used if no information for a specific day is provided in the following table. | + | {{ :devel:arf_measurement.png?direct&400 |}} |
| - | * A table with 5 columns: date (in YYYY-MM-DD format), albedo, Angström's alpha, Angström's beta, and cloud cover. | + | * Fields with default values for the surface albedo in the UV, Angström's alpha and beta of aerosols, and the cloud cover (with values from 0 for clear sky to 1 for completely overcast conditions; the cosine correction is only applied for values lower than 0.9). These meteorological parameters will be used if no information for a specific day is provided in the following table. |
| + | |||
| + | * A table with 5 columns: date (in YYYY-MM-DD format), surface albedo in the UV, Angström's alpha and beta of aerosols, and cloud cover. The cloud cover takes values from 0 (clear) to 1 (completely overcast), and the cosine correction is only applied for values lower than 0.9. | ||
| These data are used to calculate the cosine correction in the level 2 UV product. For the calculation itself we use a modified version of the [[https://github.com/pec0ra/buvic|Brewer UV Irradiance Calculator (BUVIC)]] developed by Basile Maret and Julian Gröbner at the [[https://www.pmodwrc.ch/en/home/|PMOD/WRC]]. | These data are used to calculate the cosine correction in the level 2 UV product. For the calculation itself we use a modified version of the [[https://github.com/pec0ra/buvic|Brewer UV Irradiance Calculator (BUVIC)]] developed by Basile Maret and Julian Gröbner at the [[https://www.pmodwrc.ch/en/home/|PMOD/WRC]]. | ||
devel/eubrewnetconfiguration.1666252380.txt.gz · Last modified: 2023/09/13 08:19 (external edit)
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