[arts-users] Assertion in TestOEM.arts

[Rita Edit Kajtar]

Hello!




While trying to fix an error of avkCalc, caused by the presence of negative VMR 
values when trying to run TestOEM.arts, I set :


negative_vmr_ok=1 in atmfields_checkedCalc


AND included vmr_fieldClip with limit_low=0 in inversion_iterate_agenda,


I now get an assertion inside the MAP computation (fig attached).


Best regards,

Rita Kajtar
___
arts_users.mi mailing list
arts_users.mi@lists.uni-hamburg.de
https://mailman.rrz.uni-hamburg.de/mailman/listinfo/arts_users.mi

Re: [arts-users] setting abs_f_interp_order in general.arts

[Rita Edit Kajtar]

Hi!


Thanks a lot, Jonas.



Best regards,

Rita


From: Jonas Hagen 
Sent: Monday, October 7, 2019 6:25:53 PM
To: Rita Edit Kajtar
Cc: arts_users.mi@lists.uni-hamburg.de
Subject: Re: [arts-users] setting abs_f_interp_order in general.arts


Hi Rita

> I have a question related to how should I set abs_f_interp_order
> in
> general.arts, which is then being included in an ARTS cfile
> where
> winds are considered, e.g. TestOEM.arts?

As far as I know, this parameter is only relevant when using
frequency
lookup tables. For wind retrievals we use the OnTheFly method to
calculate absorption without lookup tables, which is slower but
more
accurate because it does not need interpolation.
This is also set in TestOEM.arts by:
Copy( propmat_clearsky_agenda, propmat_clearsky_agenda__OnTheFly )

> then is it sufficient to set abs_f_interp_order to 1 when I am
> dealing
> with on-the-fly calculations?

Exactly.


Best regards,
Jonas Hagen

On Mo 07 Okt 2019 at 14:11, Rita Edit Kajtar
 wrote:

> Hello!
>
>
>
>
>
> Also, the comment indicates that abs_f_interp_order should be
> set to as >= l, what does 'l' stand for? Or should it be 1? And
> if it's >=1,
>
>
>
>
> Best regards,
>
> Rita Kajtar
> ___
> arts_users.mi mailing list
> arts_users.mi@lists.uni-hamburg.de
> https://mailman.rrz.uni-hamburg.de/mailman/listinfo/arts_users.mi

___
arts_users.mi mailing list
arts_users.mi@lists.uni-hamburg.de
https://mailman.rrz.uni-hamburg.de/mailman/listinfo/arts_users.mi

[arts-users] setting abs_f_interp_order in general.arts

[Rita Edit Kajtar]

Hello!



I have a question related to how should I set abs_f_interp_order  in 
general.arts, which is then being included in an ARTS cfile where winds are 
considered, e.g. TestOEM.arts?


Also, the comment indicates that abs_f_interp_order should be set to as >= l, 
what does 'l' stand for? Or should it be 1? And if it's >=1, then is it 
sufficient to set abs_f_interp_order  to 1 when I am dealing with on-the-fly 
calculations?




Best regards,

Rita Kajtar
___
arts_users.mi mailing list
arts_users.mi@lists.uni-hamburg.de
https://mailman.rrz.uni-hamburg.de/mailman/listinfo/arts_users.mi

[arts-users] Test e-mail

[Rita Edit Kajtar]

Hello!



This is just to check whether e-mails sent from LTU go through :)



/Rita
___
arts_users.mi mailing list
arts_users.mi@lists.uni-hamburg.de
https://mailman.rrz.uni-hamburg.de/mailman/listinfo/arts_users.mi

[arts-users] O3 Jacobians

[Rita Edit Kajtar]

Hello!



I have another short question, this time regarding the calculation of Jacobians 
for O3.

I am considering a no winds, no specific atmospheric background case and the 
jacobianAddAbsSpecies in my control file is set as it follows:


jacobianAddAbsSpecies(
  g1=p_grid,
  g2=gas1_jac_lat_grid,
  g3=gas1_jac_lon_grid,
  species="O3",
  method="analytical",
  unit="logrel",

  )


When looking at the change in Bt in my plots, in what units the change of O3 is 
being represented?



Best regards,

Rita Kajtar
___
arts_users.mi mailing list
arts_users.mi@lists.uni-hamburg.de
https://mailman.rrz.uni-hamburg.de/mailman/listinfo/arts_users.mi

[arts-users] Wind calculations

[Rita Edit Kajtar]

Hello!



I have a short question regarding wind calculations.

What is the general convention assumed for determining the sign of the wind 
speeds having the measuring instrument as the reference point? Are the winds 
blowing towards the instrument considered positive and those blowing away from 
the instrument negative or the other way around?

The ARTS documentation provides information for how the sign should be 
considered regarding the four cardinal directions, but not relative to a 
measuring device.


Best regards,
Rita Kajtar

___
arts_users.mi mailing list
arts_users.mi@lists.uni-hamburg.de
https://mailman.rrz.uni-hamburg.de/mailman/listinfo/arts_users.mi