Search found 324 matches

by alicec
June 21st, 2021, 7:04 am
Forum: HYSPLIT Workshop
Topic: How to understand the trajectory endpoints file format?
Replies: 1
Views: 14

Re: How to understand the trajectory endpoints file format?

The diagnostic variables that can be output in the trajectory endpoints file are the following: https://www.ready.noaa.gov/hysplitusersguide/S410.htm https://www.ready.noaa.gov/hysplitusersguide/S614.htm TM_PRES=0 trajectory diagnostic output pressure variable marker flag TM_TPOT=0 trajectory diagno...
by alicec
June 21st, 2021, 6:59 am
Forum: 16. Volcanic eruptions with gravitational settling
Topic: Time-dependent emissions
Replies: 5
Views: 62

Re: Time-dependent emissions

Could you clarify your question. The original question was about creating an emit-times file (see https://www.ready.noaa.gov/hysplitusersguide/S417.htm) from a netcdf file which has emissions inventory information. What do you mean by a "2D raster with the same layout of the meteorology to HYSPLIT a...
by alicec
June 18th, 2021, 1:10 pm
Forum: 16. Volcanic eruptions with gravitational settling
Topic: Time-dependent emissions
Replies: 5
Views: 62

Re: Time-dependent emissions

Various people have developed their own scripts for converting emission information into an emit-times file. For instance this has been done for fire-smoke, emissions from power plants, dust, volcanic emissions and more. No general utility for doing this is supplied with the HYSPLIT distribution as ...
by alicec
June 18th, 2021, 12:57 pm
Forum: 5. Trajectory options
Topic: Convection
Replies: 2
Views: 91

Re: Convection

If CAPE (convective available potential energy) is available in the MET data set then HYSPLIT can utilize that.

https://www.ready.noaa.gov/hysplitusersguide/S640.htm

This is discussed in the advanced tutorial a bit a well.
https://www.ready.noaa.gov/documents/Tu ... _cape.html
by alicec
June 18th, 2021, 11:55 am
Forum: 16. Volcanic eruptions with gravitational settling
Topic: Extracting Particles
Replies: 3
Views: 66

Re: Extracting Particles

There is a utility called par2asc which will convert PARDUMP output to ascii files. You can find it in the exec directory. Description of the pardump/parinit file is here. https://www.ready.noaa.gov/hysplitusersguide/S442.htm There is python code with a class that can read/write pardump files here i...
by alicec
June 18th, 2021, 11:42 am
Forum: 16. Volcanic eruptions with gravitational settling
Topic: Time-dependent emissions
Replies: 5
Views: 62

Re: Time-dependent emissions

Yes! Roland will go through this soon.
Section 16.5 on using the EMITIMES file addresses this topic.

Also reference the HYSPLIT users guide.
https://www.ready.noaa.gov/hysplitusersguide/S417.htm
by alicec
June 18th, 2021, 10:47 am
Forum: 15. Radioactive pollutants and dose
Topic: Need gdas11-22.bin
Replies: 5
Views: 57

Re: Need gdas11-22.bin

Are you getting an error when you download or extract?
Do you notice any other missing files?
by alicec
June 18th, 2021, 10:36 am
Forum: 15. Radioactive pollutants and dose
Topic: Need gdas11-22.bin
Replies: 5
Views: 57

Re: Need gdas11-22.bin

Try downloading the tutorial again. It should be in the subfolder titled japan.
https://www.ready.noaa.gov/HYSPLIT_Tutorials.php
It is a large binary file.
by alicec
June 18th, 2021, 10:21 am
Forum: 6. Trajectory statistics
Topic: Interpreting Ensemble Results
Replies: 5
Views: 80

Re: Interpreting Ensemble Results

Yes -it is always 1 grid cell.

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