HYSPLIT Forum: hysplitbbs.arl.noaa.gov

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...

You need to set vertical motion method to 4:sigma for this meteorological data.

MeteoInfo 1.4.6 was released with 3-D trajectory plot function (http://www.meteothinker.com/news/meteoinfo_1.4.6.html).

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.

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 .

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...

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...

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...

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...

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...