devel:eubrewnetconfiguration
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devel:eubrewnetconfiguration [2022/02/17 11:52] jlsolano [Getting the data omitted by the exclusion list] |
devel:eubrewnetconfiguration [2024/03/25 16:00] (current) jlsolano [Cosine Correction] |
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| ====== Brewer Configuration constants ====== | ====== Brewer Configuration constants ====== | ||
| ===== Configuration Upload ===== | ===== Configuration Upload ===== | ||
| - | For a correct understanding of the Configuration Upload Interface, please take a look at the [[http://www.eubrewnet.org/cost1207/2015/03/04/configuration-upload-intructions/|Configuration Upload Instructions]] -- the behaviour of the form is described there. | + | For a correct understanding of the Configuration Upload Interface, please take a look at the [[http://eubrewnet.aemet.es/cost1207/2015/03/04/configuration-upload-intructions/|Configuration Upload Instructions]] -- the behaviour of the form is described there. |
| ===== Constants ===== | ===== Constants ===== | ||
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| This information is included in the ''UVRJJJYY.BID'' files produced by the standard Brewer software. | This information is included in the ''UVRJJJYY.BID'' files produced by the standard Brewer software. | ||
| - | This table is used to convert the raw counts measured by the Brewer to the irradiances (''I'', in W/m<sup>2</sup>/nm) shown in the level 1, 1.5, and 2 UV products | + | This table is used in the UV L1 product to convert the raw counts measured by the Brewer to irradiances (''I'', in W/m<sup>2</sup>/nm) |
| ==== Temperature ==== | ==== Temperature ==== | ||
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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 optical depth. 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 optical depth. | + | * 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. |
| - | To determine all this information, see e.g. [[https://acp.copernicus.org/articles/8/3369/2008/|Lakkala et al., Atmos. Chem. Phys., 8, 3369–3383, 2008]] | + | * 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. |
| - | To calculate the cosine correction in the level 2 UV product, 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]]. BUVIC follows the method described in [[https://acp.copernicus.org/articles/8/3369/2008/|Lakkala et al., Atmos. Chem. Phys., 8, 3369–3383, 2008]] | + | 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]]. |
| ==== Exclusion List ==== | ==== Exclusion List ==== | ||
| - | Finally, level 1.5 and 2.0 UV products can be filtered using a UV-specific [[http://rbcce.aemet.es/dokuwiki/doku.php?id=devel:eubrewnetconfiguration&#exclusion_list1|Exclusion List]] | + | Finally, starting from the level 1.5 UV product, data can be filtered using a UV-specific [[http://eubrewnet.aemet.es/dokuwiki/doku.php?id=devel:eubrewnetconfiguration&#exclusion_list1|Exclusion List]] |
| ---- | ---- | ||
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| As with any other parameter defined as a filter (see the documentation of the [[codes:ozoneproduct&#level_15_realtime_observation|level 1.5 product]]), the effect of the Exclusion List can be checked using the process function with the &rejected option, e.g: | As with any other parameter defined as a filter (see the documentation of the [[codes:ozoneproduct&#level_15_realtime_observation|level 1.5 product]]), the effect of the Exclusion List can be checked using the process function with the &rejected option, e.g: | ||
| - | http://rbcce.aemet.es/eubrewnet/data/process/O3L1_5?brewerid=185&date=2020-03-22&enddate=2020-03-23&rejected | + | http://eubrewnet.aemet.es/eubrewnet/data/process/O3L1_5?brewerid=185&date=2020-03-22&enddate=2020-03-23&rejected |
| This will give a list of all the L1.5 individual measurements. If there are measurements affected by the Exclusion List, they will have a value greater or equal than 32 in the filter_flag field. | This will give a list of all the L1.5 individual measurements. If there are measurements affected by the Exclusion List, they will have a value greater or equal than 32 in the filter_flag field. | ||
| - | If the data has been completely processed, a call using the standard get function (e.g., http://rbcce.aemet.es/eubrewnet/data/get.json/O3L1_5?brewerid=185&date=2020-03-22&enddate=2020-03-23) will omit all the measurements included in the Exclusion List. | + | If the data has been completely processed, a call using the standard get function (e.g., http://eubrewnet.aemet.es/eubrewnet/data/get.json/O3L1_5?brewerid=185&date=2020-03-22&enddate=2020-03-23) will omit all the measurements included in the Exclusion List. |
| ---- | ---- | ||
| Line 511: | Line 511: | ||
| So, if you try to open | So, if you try to open | ||
| - | http://rbcce.aemet.es/eubrewnet/data/process/O3L1_5?brewerid=185&date=2019-06-12&enddate=2019-07-01&format=text | + | http://eubrewnet.aemet.es/eubrewnet/data/process/O3L1_5?brewerid=185&date=2019-06-12&enddate=2019-07-01&format=text |
| in your browser, you will not get any data. | in your browser, you will not get any data. | ||
| Line 517: | Line 517: | ||
| However, if you add ''&allowtag=campaign'' to the URL, so that it looks like | However, if you add ''&allowtag=campaign'' to the URL, so that it looks like | ||
| - | http://rbcce.aemet.es/eubrewnet/data/process/O3L1_5?brewerid=185&date=2019-06-12&enddate=2019-07-01&format=text&allowtag=campaign | + | http://eubrewnet.aemet.es/eubrewnet/data/process/O3L1_5?brewerid=185&date=2019-06-12&enddate=2019-07-01&format=text&allowtag=campaign |
| you will now get the campaign's data -- Eubrewnet has omitted the exclusion ranges which include the keyword ''campaign'' in the comment. | you will now get the campaign's data -- Eubrewnet has omitted the exclusion ranges which include the keyword ''campaign'' in the comment. | ||
| Note that, instead of ''campaign'', you could have used ''are2019'' or ''are'' or ''camp'' -- Eubrewnet will check for incomplete keywords too. | Note that, instead of ''campaign'', you could have used ''are2019'' or ''are'' or ''camp'' -- Eubrewnet will check for incomplete keywords too. | ||
| + | |||
devel/eubrewnetconfiguration.1645098752.txt.gz · Last modified: 2022/02/17 11:52 by jlsolano
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