Thanks, Mattia. Would you advise how TestAbs.arts can be revised to include
line-by-line calculation?
Note that the behavior of TestAbs.arts is different in arts2.3, which does
calculate line-by-line absorption coefficients.
I do not want continua, as I am mainly interested in the visible spectra, which
is out of most of those continuum models. Based on my experience with previous
arts version, arts does not check the spectrum limits for the continuum models.
I am not sure whether arts 2.5 has been improved on this.
Pengwang
> On Feb 10, 2022, at 9:46 AM, mattia.sabat...@artov.ismar.cnr.it wrote:
>
> Hi Pengwang,
>
> the controlfile TestAbs.arts, in line 15, has the following:
> Copy(abs_xsec_agenda, abs_xsec_agenda__noCIA)
>
> I checked in controlfiles/general/agendas.arts for what
> abs_xsec_agenda__noCIA does:
> AgendaCreate( abs_xsec_agenda__noCIA )
> AgendaSet( abs_xsec_agenda__noCIA ){
> abs_xsec_per_speciesInit
> abs_xsec_per_speciesAddConts
> }
>
> Therefore the agenda calculates absorption for continua tag only (see
> https://atmtools.github.io/arts-docs-master/docserver/methods/abs_xsec_per_speciesAddConts.html).
> You selected H2O, and by doing this my guess is that you are not considering
> continuum, as it is written in lines 36-37 of TestAbs.arts.
>
> I hope that this will help you,
>
> Mattia
>
>
> Pengwang Zhai <pwz...@umbc.edu> ha scritto:
>
>> Hello, ARTS community,
>>
>> I downloaded and compiled the latest version of arts. Now I tested the the
>> creation of abs_lookup with the example control file located in:
>>
>> arts/controlfiles/artscomponents/absorption/TestAbs.arts
>>
>> I only modified two occurrences of:
>>
>> abs_speciesSet( species=[ "H2O-PWR98",
>> "O2-PWR93",
>> "N2-SelfContStandardType" ] )
>>
>> to:
>>
>> abs_speciesSet( species=[ "H2O" ] )
>>
>> and run
>>
>> arts TestAbs.arts
>>
>> The resultant abs_lookup are all ZEROs.
>>
>> Any help?
>>
>> More background information: I used arts 2.3 to create abs_lookup for H2O,
>> CO2, etc. in the visible by reading from HITRAN 2012. The baseline example
>> was TestAbs.arts provided by the arts installation. Now I need to revisit
>> the calculation based on HITRAN 2020, and the lookup table calculation seems
>> not working with arts 2.5. I greatly appreciate it if you could provide a
>> working example on how to create a abs_lookup with arts 2.5.
>>
>> Pengwang
>>
>>
>>
>>
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>
>
>
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