Search found 53 matches

by yaqiang
August 4th, 2020, 9:31 am
Forum: Conversion programs
Topic: Segmentation fault using era52arl
Replies: 16
Views: 4352

Re: Segmentation fault using era52arl

You can check this topic for converting ERA5 to ARL data format: viewtopic.php?f=30&t=1778 .
by yaqiang
July 28th, 2020, 8:14 am
Forum: Users
Topic: Spatial extent of WRF 27km ARL packed data
Replies: 1
Views: 189

Re: Spatial extent of WRF 27km ARL packed data

You can try to use MeteoInfo to read ARL packed data.
by yaqiang
June 26th, 2020, 1:37 am
Forum: MeteoInfo Software
Topic: Accommodation for no-leap calendars
Replies: 1
Views: 145

Re: Accommodation for no-leap calendars

I have no experience on no-leap canlendar, but I think hysplit need leap day as your testing result. So you need to convert no-leap canlendar to Gregorian calendar before writing the time in ARL data. In fact, MeteoInfo gets Gregorian time from data according starting time and hours (or other units)...
by yaqiang
June 26th, 2020, 1:20 am
Forum: MeteoInfo Software
Topic: Projection error with concentration drawings
Replies: 1
Views: 60

Re: Projection error with concentration drawings

Please using the newest version of MeteoInfo (http://www.meteothink.org/downloads/index.html), and please let me know if you have further problem.
by yaqiang
February 19th, 2020, 11:48 pm
Forum: MeteoInfo Software
Topic: Convert ERA5 data to ARL data
Replies: 2
Views: 736

Re: Convert ERA5 data to ARL data

Thanks for your information! I have tried adding DIFW as a variable in converted ARF data file and comparing WWND by adding DIFW values. DIFW still has lossy compression problem to reproduce exactly data values of origianl ERA5 data, but the result much improved. Following are new scripts for conver...
by yaqiang
February 19th, 2020, 3:54 am
Forum: MeteoInfo Software
Topic: Convert ERA5 data to ARL data
Replies: 2
Views: 736

Convert ERA5 data to ARL data

The example script to convert ERA5 grib data to ARL formatted data for HYSPLIT input meteorological dataset. # Convert ERA5 GRIB data to ARL data #---- Set data folder datadir = r'D:/Temp/grib' #---- Set output data file outfn = os.path.join(datadir, 'test_era5_grib-1.arl') #---- Read a GRIB data fi...
by yaqiang
January 10th, 2020, 1:13 am
Forum: MeteoInfo Software
Topic: 3D trajectory and terrain
Replies: 1
Views: 1769

3D trajectory and terrain

From MeteoInfo version 2.0, opengl supported 3D axes was implemented for better 3D data visualization. Following is an example to plot 3D trajectory and terrain. fn = 'D:/Temp/hysplit/output_850' f = addfile_hytraj(fn) tlayer = f.trajlayer() ls = tlayer.legend() for lb in ls.getLegendBreaks(): lb.se...
by yaqiang
January 10th, 2020, 1:05 am
Forum: MeteoInfo Software
Topic: Read and plot bdyfiles
Replies: 0
Views: 1294

Read and plot bdyfiles

The HYSPLIT ./bdyfiles subdirectory contains ascii gridded terrain, land-use and roughness length data for Hysplit. Following is an example MeteoInfoLab script for reading and plotting terrain data file. #Read and plot HYSPLIT bdyfiles import re #Parameters slat = -90 #lat of lower left corner slon ...
by yaqiang
September 25th, 2019, 12:03 am
Forum: Trajectory Model
Topic: Regarding output of gdas1 trajectory output
Replies: 2
Views: 1248

Re: Regarding output of gdas1 trajectory output

The meteoroogical variable data along the trajectoies can be extracted from gridded meteorological dataset according the positions of the trajectory endpoints. Here is an example MeteoInfoLab script: http://www.meteothink.org/examples/mete ... _data.html .
by yaqiang
May 14th, 2019, 11:07 am
Forum: MeteoInfo Software
Topic: Trouble With TrajStat Example
Replies: 1
Views: 1715

Re: Trouble With TrajStat Example

It's hard to say why you got wrong result without detailed step description. The only suggestion at present is to use newest version of MeteoInfo and TrajStat if you are using old ones.