Search found 49 matches

by yaqiang
March 9th, 2018, 1:26 am
Forum: MeteoInfo Software
Topic: MeteoInfoLab script - plot HYSPLIT concentration data
Replies: 0
Views: 3089

MeteoInfoLab script - plot HYSPLIT concentration data

Get a HYSPLIT output concentration data file object using addfile_hyocnc function, and then read 2D array for filled contour plot. Following is an example of cesium-137 simulation during 2011 Fukushima nuclear disaster. fn = r'D:\Working\MIScript\JapanNuclear\cdump15' f = addfile_hyconc(fn) tidx = 5...
by yaqiang
August 22nd, 2017, 9:12 pm
Forum: Conversion programs
Topic: api2arl more levels
Replies: 9
Views: 3793

Re: api2arl more levels

You need to set vertical motion method to 4:sigma for this meteorological data.
by yaqiang
July 31st, 2017, 4:22 am
Forum: MeteoInfo Software
Topic: 3-D trajectory plot
Replies: 0
Views: 3958

3-D trajectory plot

MeteoInfo 1.4.6 was released with 3-D trajectory plot function (http://www.meteothinker.com/news/meteoinfo_1.4.6.html).
trajectory_3d_1.png
traj_3d.png
by yaqiang
June 8th, 2017, 10:52 am
Forum: Users
Topic: Is there a way this can be done?
Replies: 4
Views: 2207

Re: Is there a way this can be done?

You can create point shape file from HYSPLIT trajectory data file using MeteoInfo. All variable values will be added in attribute table including time stamp and altitude.
by yaqiang
June 8th, 2017, 10:35 am
Forum: Trajectory Model
Topic: Display of Other Along-Traj Variables
Replies: 5
Views: 2653

Re: Display of Other Along-Traj Variables

Another option is to write MeteoInfoLab script to extract the variable values from meteorological data along trajetory. There is a online example: http://www.meteothinker.com/examples/me ... _data.html .
by yaqiang
May 18th, 2017, 2:30 am
Forum: MeteoInfo Software
Topic: MeteoInfoLab script - convert ARL or concentration data to netCDF
Replies: 0
Views: 3977

MeteoInfoLab script - convert ARL or concentration data to netCDF

The 'convert2nc' function can be used to convert many data formats to netCDF, including ARL and HYSPLIT concentration data. MeteoInfo 1.4.3R3 or better version is needed. For ARL data: infn = 'D:/Temp/arl/gdas1.jul09.w5' #Input ARL file outfn = 'D:/Temp/arl/gdas1.jul09.w5.nc' #Output netCDF file con...
by yaqiang
April 27th, 2017, 11:34 am
Forum: Users
Topic: Using Hysplit tools with older cdump files
Replies: 15
Views: 3579

Re: Using Hysplit tools with older cdump files

In fact, the data files are not corrupted but they were stored as little endian format. HYSPLIT concentration data normally should be big endian. I don't know if conread or concplot has option to read these little endian data. I just updated MeteoInfo/MeteoInfoLab software to solve this condition (M...
by yaqiang
March 17th, 2017, 8:27 pm
Forum: Users
Topic: Archived Meteorological Data Extract
Replies: 15
Views: 5849

Re: Archived Meteorological Data Extract

ARL or HYSPLIT meteorological data format is not so popular as netCDF or GRIB, so it is not supported directly in most softwares such as NCL and GrADS. But MeteoInfo (which is free and open source) can read/write and display this data format. You can try it from this website: http://www.meteothinker...
by yaqiang
March 2nd, 2017, 9:28 pm
Forum: General questions on meteorological data needed for HYSPLIT
Topic: How to write nx which bigger than 1000?
Replies: 1
Views: 2027

Re: How to write nx which bigger than 1000?

I found the answer from "pakset.f". !==>adjust grid parameters to deal with large grid sizes IF(GV(NG)%NXG.GE.1000.OR.GV(NG)%NYG.GE.1000)THEN ! header record does not support grids of more than 999 ! therefore in those situations the grid number is ! converted to character to represent the 1000s dig...
by yaqiang
March 2nd, 2017, 11:02 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: How to write nx which bigger than 1000?
Replies: 1
Views: 2027

How to write nx which bigger than 1000?

From ARL data format document we know the "I3" was used as string format. (3I3) 1) Number x points, 2) Number y points, 3) Number levels Now I have a data with the number points in x and y directions as 1280 and 640. So how to write x number to ARL data format? How to read out 1280 if only write 280...