Search found 42 matches

by yaqiang
April 10th, 2019, 9:49 pm
Forum: Users
Topic: Problem with emission location
Replies: 5
Views: 95

Re: Problem with emission location

Wrong latitude of 63.333 in your figure. Correct one is 63.633.
by yaqiang
December 13th, 2018, 4:21 am
Forum: MeteoInfo Software
Topic: Fix the bug for HYSPLIT concentration data reading
Replies: 0
Views: 447

Fix the bug for HYSPLIT concentration data reading

A bug exists in MeteoInfo for HYSPLIT output concentration data reading. The i, j index of non-zero elements can be read from data record 8, and the i, j index starting from 1 following Fortran language. MeteoInfo was developed using Java with 0 starting array, so the element positions were read inc...
by yaqiang
November 4th, 2018, 11:41 pm
Forum: MeteoInfo Software
Topic: Calculate trajectory length
Replies: 0
Views: 361

Calculate trajectory length

An example for trajectory length calculation script was added in MeteoInfo website: http://meteothink.org/examples/meteoinf ... ength.html .
by yaqiang
November 1st, 2018, 4:06 am
Forum: MeteoInfo Software
Topic: How to calculate potential vorticity (PV) along the trajectory
Replies: 2
Views: 433

Re: How to calculate potential vorticity (PV) along the trajectory

You can calculate PV array from the existing variables and than interpolate to the end point positions of the trajectories. There is a MPV example online (http://meteothink.org/examples/meteoinfolab/meteo_analysis/moisture_potential_vorticity.html). Replace pseudo-equivalent potential temperature to...
by yaqiang
October 26th, 2018, 11:31 am
Forum: MeteoInfo Software
Topic: Web domain changed to meteothink.org
Replies: 4
Views: 501

Re: Web domain changed to meteothink.org

Great, thanks!
by yaqiang
October 19th, 2018, 9:18 pm
Forum: MeteoInfo Software
Topic: Web domain changed to meteothink.org
Replies: 4
Views: 501

Re: Web domain changed to meteothink.org

Glenn,

Thanks for your quickly response on it! Also TrajStat links need to be updated on the READY web site.

Regards
Yaqiang
by yaqiang
October 19th, 2018, 12:52 pm
Forum: MeteoInfo Software
Topic: Read trajectory data as 2D array
Replies: 0
Views: 386

Read trajectory data as 2D array

The trajectory endpoint data file can be read as 2D arrays following netCDF data model from MeteoInfo version 1.6. The dimensions are 'trajectory' (trajectory number) and 'obs' (endpoint number of one trajectory). Detail and example can be found here: http://www.meteothink.org/examples/meteoinfolab/...
by yaqiang
October 19th, 2018, 12:19 pm
Forum: MeteoInfo Software
Topic: Web domain changed to meteothink.org
Replies: 4
Views: 501

Web domain changed to meteothink.org

The previous meteothinker.com domain is no appropriate for MeteoInfo software due to its open source nature, and the previous web hosting was not stable from several weeks ago. So I moved the web site to GoDaddy with a new domain of meteothink.org (http://meteothink.org/). Please revise the web link...
by yaqiang
October 19th, 2018, 10:50 am
Forum: Dispersion Model
Topic: ASCII to cdump file
Replies: 3
Views: 409

Re: ASCII to cdump file

You may try MeteoInfoLab script to get the max value and location from cdump file, and plot it on map. #Read data array from HYSPLIT concentration output data fn = r'D:\Working\MIScript\JapanNuclear\cdump15' f = addfile_hyconc(fn) data = f['C137'][:,0,:,:] # 3 dimension array - time, lat, lon #Get t...
by yaqiang
August 23rd, 2018, 3:42 am
Forum: Users
Topic: mixing height data
Replies: 1
Views: 659

Re: mixing height data

If you mean to extract PBLH data at a specific location from existing meteorological data (such as GDAS data), you can follow the example here: http://www.meteothinker.com/examples/me ... rp_st.html .
interpn_st.png