Search found 21 matches

by hyun.kim
June 17th, 2022, 11:36 am
Forum: 7. Air concentration calculations
Topic: Temporal evolution of emissions
Replies: 1
Views: 15965

Re: Temporal evolution of emissions

EMITIMES file was designed to handle such a case, which will be covered during the workshop today.

https://www.ready.noaa.gov/documents/Tu ... _emit.html
by hyun.kim
June 17th, 2022, 11:28 am
Forum: 14. Wildfire smoke and dust storms
Topic: EMITIMES data
Replies: 1
Views: 10674

Re: EMITIMES data

Hi, There is no consensus solution for wildfire emissions, but you can utilize some of these data sets. For wildfire detection location, many satellite based products are available such as HMS or MODIS to name two. https://www.ospo.noaa.gov/Products/land/hms.html https://firms.modaps.eosdis.nasa.gov...
by hyun.kim
June 15th, 2022, 3:59 pm
Forum: 17. Custom simulations
Topic: FMDV simulation
Replies: 3
Views: 19867

Re: FMDV simulation

Hi,
Could you please elaborate what the FMDV simulation is?
by hyun.kim
June 17th, 2021, 2:26 pm
Forum: 2. Testing the installation
Topic: working folder not updating
Replies: 1
Views: 11347

Re: working folder not updating

Please, set the file sorting method by "Date modified" (For PC), then you can see updated files real time. If you like to see the content of HYSPLIT outputs, drop it to any editor (notepad for PC), you can see the ASCII part of the file. TDUMP files are in ASCII format, so you can see its content di...
by hyun.kim
June 17th, 2021, 10:03 am
Forum: Cluster Analysis
Topic: Calculate meteorological variables (precipitation etc.) from Clusters
Replies: 8
Views: 31099

Re: Calculate meteorological variables (precipitation etc.) from Clusters

Personally, I'm using IDL (Interactive Data Language), but Python might be the most popular solution. Matlab or R will work too.
by hyun.kim
June 16th, 2021, 4:11 pm
Forum: 10. Alternate display options
Topic: Expected Coordinate system for shapefille background. (10.2)
Replies: 2
Views: 12475

Re: Expected Coordinate system for shapefille background. (10.2)

Default datum for shapefile output is GRS1980. See *.prj file for detailed information (Tutorial 10.5).
Since WGS84 is very similar to GRS1980, I don't expect any trouble to use it. However, please use proper datum transformation using GIS software if you need a high level accuracy.
by hyun.kim
June 16th, 2021, 2:23 pm
Forum: Cluster Analysis
Topic: Calculate meteorological variables (precipitation etc.) from Clusters
Replies: 8
Views: 31099

Re: Calculate meteorological variables (precipitation etc.) from Clusters

Unfortunately, my answer was incorrect. trajmean does not process additional variables. At this moment, you better conduct averaging separately, using other programing language. Using Exel seems to be too troublesome. Sorry for the confusion.
by hyun.kim
June 16th, 2021, 10:08 am
Forum: 7. Air concentration calculations
Topic: Veryfing message file
Replies: 2
Views: 12725

Re: Veryfing message file

Theoretically, all dispersion simulations are different because they involve random number generation by machine. Not sure 10% deviation is common, but the results surely can differ depending on machines (and met data, modeling configurations etc.).
by hyun.kim
June 16th, 2021, 9:43 am
Forum: 6. Trajectory statistics
Topic: Clustering backwards trajectories
Replies: 1
Views: 11587

Re: Clustering backwards trajectories

Hi,
Time steps in clustering specifies how many endpoints lines you like to use in clustering calculation (always positive). It is different from the time step in trajectory runs where negative time step indicates the backward simulation.
by hyun.kim
June 16th, 2021, 9:26 am
Forum: Cluster Analysis
Topic: Calculate meteorological variables (precipitation etc.) from Clusters
Replies: 8
Views: 31099

Re: Calculate meteorological variables (precipitation etc.) from Clusters

Carlo, After cluster analysis, you can find "TRAJ.INP.C*_3" (if ncluster=3) file that includes the list of traj files for specific cluster. You can use its time stamps to separate each cluster case. If you have included specific met. variables in tdump files, "C*mean.tdump" will automatically merges...

Go to advanced search