Search found 16 matches

by Tianfeng.Chai
July 6th, 2020, 7:08 pm
Forum: Radiological
Topic: Long-term dose estimation with con2rem
Replies: 2
Views: 622

Re: Long-term dose estimation with con2rem

The explanation can be found in the user guide. Additional decay time can be added using this field to estimate long-term doses. This calculation applies to either -t option but only for deposition doses. This option permits longer-term doses to be computed by adding additional decay to the existing...
by Tianfeng.Chai
June 26th, 2020, 6:45 pm
Forum: 15. Radioactive pollutants and dose
Topic: Obtaining the concentration multiplier
Replies: 3
Views: 375

Re: Obtaining the concentration multiplier

I believe the inhalation pathway that affects lungs is more important for radionuclide in the air. Inhalation conversion factor for Cs-137 used at NOAA is 4.60E-09 Sv/Bq. As 1 rem = 0.01 sievert (Sv), this Cs137 factor is 4.60E-11Rem/Bq The dose to human lungs due to breathing in Cs-137 in the air w...
by Tianfeng.Chai
June 25th, 2020, 4:40 pm
Forum: 15. Radioactive pollutants and dose
Topic: Obtaining the concentration multiplier
Replies: 3
Views: 375

Re: Obtaining the concentration multiplier

Can you provide the detailed source for "469.5 [mREM/y]/[mCi/cm^3] ? There are many different exposure to dose conversion factors, e.g. due to submersion and inhalation. The dose conversion factor for deposited radionuclides are related to groundshine where some assumption have to be made for surfac...
by Tianfeng.Chai
June 25th, 2020, 2:26 pm
Forum: 7. Air concentration calculations
Topic: Grid concentration calculation
Replies: 1
Views: 208

Re: Grid concentration calculation

The basic equations to calculate concentrations are provided in the tutorial. https://www.ready.noaa.gov/documents/Tutorial/html/conc_eqns.html Currently, we do not have an averaging kernel function applied. However, some work is being done in our research group to experiment the averaging kernel op...
by Tianfeng.Chai
June 23rd, 2020, 2:23 pm
Forum: 9. Air concentration parameter sensitivity
Topic: How to Retrieve Captex Control & Setup Files?
Replies: 8
Views: 394

Re: How to Retrieve Captex Control & Setup Files?

Can you retrieve both Control and Setup files and run HYSPLIT successfully?
If not, please try to restart HYSPLIT and Reset before continuing.
by Tianfeng.Chai
June 23rd, 2020, 2:15 pm
Forum: 9. Air concentration parameter sensitivity
Topic: How to Retrieve Captex Control & Setup Files?
Replies: 8
Views: 394

Re: How to Retrieve Captex Control & Setup Files?

Can you use "captex2_control.txt" and "captex2_setup.txt" in the downloaded and unzipped Tutorial/captex directory to continue?
You may want to copy them to "captex_control.txt" and "captex_setup.txt" as they will be referenced later.
by Tianfeng.Chai
June 23rd, 2020, 2:09 pm
Forum: 9. Air concentration parameter sensitivity
Topic: How to Retrieve Captex Control & Setup Files?
Replies: 8
Views: 394

Re: How to Retrieve Captex Control & Setup Files?

Did you retrieve "Setup file" as well?
It should be retrieved from "Advanced"/"Configuration Setup"/"Concentration" menu.