GDAS data limitations

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research
Posts: 2
Joined: August 8th, 2018, 8:10 am
Registered HYSPLIT User: No

GDAS data limitations

Post by research »

Dear All,
1. Does the following text mean that the user can not simulate the concentration of materials with 10 m-AGL source term release height by using GDAS data?
"For historical reasons, the model sets a minimum value for the PBL height. The default is 250 m and it is related to the typical vertical resolution of the meteorological data used to run HYSPLIT [e.g., Global Data Assimilation System (GDAS) or Eta Data Assimilation System (EDAS)]"
2. Can use the uncertainty of the concentration calculation instead of concentration calculation error?
barbara.stunder
Posts: 424
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: GDAS data limitations

Post by barbara.stunder »

1. No
2. I don't understand this question.
research
Posts: 2
Joined: August 8th, 2018, 8:10 am
Registered HYSPLIT User: No

Re: GDAS data limitations

Post by research »

please forgive me for my unsuitable question.
My question is: could I use the results of the ensemble section in the GUI instead of concentration calculations error?
and if I can't, is there any other solution to finding concentration calculation error, like another codes that express the calculation errors?
barbara.stunder
Posts: 424
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: GDAS data limitations

Post by barbara.stunder »

Yes, the various concentration ensembles give an estimate of the error. There is no code itself that gives the error.
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