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[IDV #VRB-317344]: Conversion of infrared data to temperature



Hi Ben,

Which version of Java are you using (from the command line: java -version)? 
Also, McV is pretty much IDV with some additions, so if IDV runs, than McV 
should run.

The reason I suggest McV is because it comes bundled with the ADDE server, 
which does the calculations on the raw files to convert them into things like 
IR brightness temperatures. When you access satellite data through the IDV 
satellite chooser, you connect to a remote ADDE server. Then, when you select a 
product to view, the ADDE server will do the necessary calculations before 
sending you the data to view. When reading the raw data off of disk, you need a 
local ADDE server to active the same functionality, which is why McV bundles 
the ADDE server. I think page two of this pdf explains how to do this in McV:

http://www.ssec.wisc.edu/mcidas/software/v/docs/SatelliteImagery1.01.pdf

Cheers!

Sean

> Hi Sean,
> 
> When I go to run McV, it launches then freezes every time.  I had a fairly 
> old version on this machine, so I downloaded the latest version and it does 
> exactly the same thing.  Perhaps uninstalling McV and reinstalling from 
> scratch would help?
> 
> Why do you feed that McV is the way to go for this case?
> 
> Thanks,
> 
> Ben
> 
> On May 16, 2012, at 4:54 PM, Unidata IDV Support wrote:
> 
> > Greetings Ben,
> >
> > McV is the way to go for this case. What kind of issues were you having 
> > getting McV to run? I ask because many of the machines at SSEC are Macs 
> > running Snow Leopard, so it's odd that it won't work for you.
> >
> > Cheers,
> >
> > Sean
> >
> >> Hello,
> >>
> >> I have downloaded some GOES-13 imager AREA files from NCDC's CLASS site,
> >> trying to get a look at the visible and especially the IR images for a
> >> couple of days in November 2010.
> >>
> >> Using the IDV, I am able to read and plot these fields, but the data
> >> are raw.  I can deal with this for vis imagery because it's still possible
> >> to look at the images and get a feel for how bright they are.  However,
> >> I want to try to view the actual temperatures from the long-wave IR and
> >> don't know how to do that when all I have are the raw value for channel 4.
> >>
> >> NOAA's website
> >>
> >> http://www.oso.noaa.gov/goes/goes-calibration/gvar-conversion.htm
> >>
> >> provides equations for converting the raw values to temperatures, but
> >> how can I apply such equations in IDV so that I can calculate/convert
> >> from the raw ch-4 values to temperatures then display them?
> >>
> >> If an alternative data source or method of plotting would be a better
> >> choice than the CLASS/IDV combination that I've chose, please let me know.
> >> As a backup, I tried to use McIDAS-V for this task, but can't even get
> >> the software to run on my machine (Mac OSX10.6.8).
> >>
> >> Perhaps GINI data could work?  I haven't been able to find a good archive
> >> of that, though.
> >>
> >> Any help would be appreciated.
> >>
> >> Many thanks,
> >>
> >> Ben Bernstein
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: VRB-317344
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> 
> 


Ticket Details
===================
Ticket ID: VRB-317344
Department: Support IDV
Priority: Normal
Status: Open


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