da.corr.virkkula2005

These are the variables to that the correction is applied to. This option is mutually exclusive with instrument specification.

Default: All absorptions

These are the variables to the light extinction coefficients used by the correction are contained in. By default none are used. This option is mutually exclusive with instrument specification.

These are the instrument suffixes that input light extinctions are read from. For example S11 would usually specifies the reference nephelometer. This option is mutually exclusive with manual variable specification.

This is the h1 constant used to generate the absorption scaling factor. Ba = [k0 + k1×(h0 + h1×ω)×ln(Tr)]×σa0 - s×σs

Default: Wavelength dependent

This is the h1 constant used to generate the absorption scaling factor. Ba = [k0 + k1×(h0 + h1×ω)×ln(Tr)]×σa0 - s×σs

Default: Wavelength dependent

These are the instrument suffixes to correct. For example S11 would usually specifies the reference nephelometer. This option is mutually exclusive with manual variable specification.

Default: All instrument suffixes

This is the k0 constant used to generate the absorption scaling factor. Ba = [k0 + k1×(h0 + h1×ω)×ln(Tr)]×σa0 - s×σs

Default: Wavelength dependent

This is the k1 constant used to generate the absorption scaling factor. Ba = [k0 + k1×(h0 + h1×ω)×ln(Tr)]×σa0 - s×σs

Default: Wavelength dependent

This is the s constant that is multiplied by the scattering and subtracted from the absorption. Ba = [k0 + k1×(h0 + h1×ω)×ln(Tr)]×σa0 - s×σs

Default: Wavelength dependent

These are the variables to the light scattering coefficients used by the correction are contained in. This option is mutually exclusive with instrument specification.

Default: All scatterings from S11

These are the instrument suffixes that input light scatterings are read from. For example S11 would usually specifies the reference nephelometer. This option is mutually exclusive with manual variable specification.

Default: S11

This is the smoothing applied to the scattering and/or extinction inputs before any calculation using them.

Default: 3-minute TC low pass filter

This is the input end transmittance used in the correction. When this option is set, this transmittance is used for all absorption channels. Therefor, normally only a single absorption can be corrected while using this option.

Default: Resolved automatically by instrument suffix

This is the input start transmittance used in the correction. When this option is set, this transmittance is used for all absorption channels. Therefor, normally only a single absorption can be corrected while using this option.

Default: Resolved automatically by instrument suffix

This argument is used to specify the station used to look up variables that do not include a station as part of an archive read specification. The station is the three letter GAW station code of the location, such as BND. The argument accepts multiple stations specified as regular expressions and separated by : or ; or ,. For example BND,MLO and (BND|MLO) are two ways of selecting both the BND and MLO stations.

The special value allstations may also be specified to select all stations.

This argument may be split into multiple actual program arguments. Each part consists of one or more variable specifications separated by , (commas). The station and archive used if none are explicitly given are defined in the other arguments or inferred from system defaults. For example simply BsB_S11 selects the blue scattering from the S11 instrument and returns all cut sizes and metadata. If instead ::BsB_S11:pm10 is used then only PM10 scattering is returned. That is, the selection specifies "any" station and archive (the defaults are set in the other arguments) then requires that it has the "PM10" flavor. A specification such as bnd:BsB_S11,thd:BsB_S11 allows for data selection from multiple stations.

This may also be used to select a "record" type alias such as "S11a". In this mode all the variables defined in the alias are returned.

Finally the special value everything can be used to select all available data for the given station(s) and archive(s).

This argument may be split into multiple actual program arguments. This full list of time arguments defines a time bounds list that sets the range of data queried. The final resulting data are clipped to the given time bounds but any values that intersect them are returned.

This argument is used to specify the archive used to look up variables that do not include an archive as part of an archive read specification. The archive is the internal name, such as raw or clean_meta. The argument accepts multiple archives specified as regular expressions and separated by : or ; or ,. For example raw(_meta)? selects both the raw and raw_meta archives.

The special value allarchives may also be used to select all available archives.

This argument is used to specify the the file to read data from. If it is present and exists then data is read from the given file name instead of from standard input. Alternatively - (a single dash) may be used to explicitly specify standard input.

This will correct all absorptions present using the scatterings from the S11 instrument.

This will correct all absorptions from A11 using extinctions from E11. Non-standard constants with k0 = 0.534 and k1 = -0.617 are also used.

This will correct only the variable BaG_A11.