Search found 362 matches

by glenn.rolph
April 17th, 2018, 8:58 am
Forum: HYSPLIT Workshop
Topic: HYSPLIT Tutorial Videos
Replies: 0
Views: 3675

HYSPLIT Tutorial Videos

We recently added a series of HYSPLIT workshop videos that correspond with the current HYSPLIT Tutorial, both of which can be found at: https://www.ready.noaa.gov/HYSPLIT_Tutorials.php These series of videos (mp4) cover the same material as presented in the online HYSPLIT Tutorial. The instructor is...
by glenn.rolph
March 30th, 2018, 9:14 am
Forum: Radiological
Topic: DEPOSITION
Replies: 2
Views: 2835

Re: DEPOSITION

We do not supply the deposition parameters for radio-nuclides besides the ones defined in the GUI (Cs-137, I-131g, I-131p, etc) as these values are not well known.
by glenn.rolph
March 30th, 2018, 9:12 am
Forum: Trajectory Model
Topic: Back trajectories with user entered met data
Replies: 2
Views: 2009

Re: Back trajectories with user entered met data

The issue is that the program that uses the surface observation only creates a 250 x 250 km grid centered over your observation location. It is only designed to be used for very short range simulations since using one surface observation is not representative the farther you are away from the observ...
by glenn.rolph
March 30th, 2018, 9:08 am
Forum: Trajectory Model
Topic: HYSPLIT Data Interpolation
Replies: 1
Views: 1409

Re: HYSPLIT Data Interpolation

The meteorological data is linearly interpolated in both space and time during the calculation.
by glenn.rolph
March 26th, 2018, 9:43 am
Forum: Announce
Topic: 2018 HYSPLIT Workshop Registration
Replies: 5
Views: 4589

2018 HYSPLIT Workshop Registration

Registration for the 2018 HYSPLIT workshop will open today at approximately noon EDT (1600 UTC). A 4 day HYSPLIT workshop will be given June 12 – 15, 2018, at the NOAA Center for Weather and Climate Prediction (NCWCP) in College Park, Maryland. The workshop will be focused on the use of the model on...
by glenn.rolph
March 21st, 2018, 6:36 am
Forum: HYSPLIT for PCs
Topic: HYSPLIT running period
Replies: 1
Views: 2100

Re: HYSPLIT running period

You did not provide your CONTROL file but there is a limit of 12 meteorological filenames allowed in the CONTROL file, so you will have to concatenate your meteorological files. Search for concatenate in the forum and you will find similar questions/answers such as: https://hysplitbbs.arl.noaa.gov/v...
by glenn.rolph
March 6th, 2018, 9:50 am
Forum: Announce
Topic: 2018 HYSPLIT Europe Workshop
Replies: 0
Views: 3033

2018 HYSPLIT Europe Workshop

A 3-day PC/Mac HYSPLIT workshop will be given May 15-17, 2018, in Barcelona, Spain (a workshop is also planned for College Park, MD on June 12-15, 2018). The Barcelona workshop will be focused on the use of the most recent version of the model on the PC/Mac and its applications. This workshop is a s...
by glenn.rolph
February 27th, 2018, 9:59 am
Forum: Radiological
Topic: The difference between two type of spacing in concentration modeling
Replies: 2
Views: 2774

Re: The difference between two type of spacing in concentration modeling

Because the calculation of concentration is mass/volume and since your grid cell is larger in the first one, hence a larger volume, and therefore the concentration will be less assuming the mass is approximately the same in the grid box. Similarly for deposition, the calculation is mass/area and sin...
by glenn.rolph
February 16th, 2018, 11:38 am
Forum: Conversion programs
Topic: User-Entered Meteorological Data with no GUI
Replies: 3
Views: 2655

Re: User-Entered Meteorological Data with no GUI

The programs that do this are included in the PC distribution and are called: Surface data to ARL format: stn2arl.exe Usage: stn2arl [filein] [fileout] [clat] [clon] [optional process ID number] Creates multiple time periods ARL packed from surface obs 07 09 04 11 00 270 5.0 1500.0 4 07 09 04 12 00 ...