Re: [idvusers] IDV hint

Sandro,

IDV can calculate derived quantities via formulas that use a python
syntax, and although it comes with several formulas already, I don't
see any for the sea water density.

Does anyone out there in the IDV community have ocean density and
potential density already coded?

If not, someone would have to code in a routine to calculate potential
temperature of seawater and then density of seawater.    One could use
the formulas from the  Matlab seawater toolkit (routine sw_pden, which
calls sw_ptmp and sw_dens).   The Matlab seawater toolkit is at:
http://www.cmar.csiro.au/datacentre/ext_docs/seawater.htm

For a newbie, it would probably take several hours to read the doc on
how to create a formula, cut-n-paste the equations in, switch the
formula syntax so that IDV understands it, and then test it.


-Rich

On Wed, Oct 22, 2008 at 7:40 AM,  <sandro.carniel@xxxxxxxxxxxxxxx> wrote:
> Rich
>
> I hate asking, but I have an urgent request from a colleague which I
> wishto test with IDV!
> I am trying to plot a derived variable such as density field out of the
> .his (that has only T and S).
> I wish to have a "Cross section" along the N-S axis of the Adriatic basin
> (from gulf of Venice to Otranto) to see the actual value of density along
> the bathymetry. Is it feasible? Difficult?
>
> S.
>
> --
> -------------------------------------------------
> NOTE THE CHANGE OF ADDRESS AND PHONE (AUG 2007)
> E-MAIL ADDRESS REMAINS THE SAME
> -------------------------------------------------
> Sandro Carniel, Ph.D.
> CNR-ISMAR, Castello 1364/A
> I-30122 Venice
> Ph. +39 329 0845720 Fax. +39 340 9336952
> WWW: http://www.ve.ismar.cnr.it/~carniel
> SKYPE: sandro carniel
> -------------------------------------------------
> Please treat the contents of this message as private
> -------------------------------------------------
>
>
>> Sandro,
>>
>> IDV is completely self-contained.   It is 100% java, and reads netCDF
>> using the NetCDF-Java library, which is included.  It even includes a
>> JRE (Java Runtime Environment).     So it's a great app for your new
>> laptop!
>>
>> -Rich
>>
>>
>> On Wed, Oct 22, 2008 at 2:41 AM,  <sandro.carniel@xxxxxxxxxxxxxxx> wrote:
>>> thanks Rich
>>> I will see what I need to install before being able to run it.
>>> In the new laptop I have nothing at the moment; I presume I need netcdf
>>> packages that are not coming along with IDV itself, at least.
>>>
>>> I sent the notes to Alfredo, suggesting a 7 days extension. Let's see.
>>> --
>>> -------------------------------------------------
>>> NOTE THE CHANGE OF ADDRESS AND PHONE (AUG 2007)
>>> E-MAIL ADDRESS REMAINS THE SAME
>>> -------------------------------------------------
>>> Sandro Carniel, Ph.D.
>>> CNR-ISMAR, Castello 1364/A
>>> I-30122 Venice
>>> Ph. +39 329 0845720 Fax. +39 340 9336952
>>> WWW: http://www.ve.ismar.cnr.it/~carniel
>>> SKYPE: sandro carniel
>>> -------------------------------------------------
>>> Please treat the contents of this message as private
>>> -------------------------------------------------
>>>
>>>
>>>> Sandro,
>>>>
>>>> I recommend using this version of IDV (2.6 beta 1).   I'm attaching an
>>>> IDV bundle of the state we were looking at.  You should be able to
>>>> just load it up and then start playing around, instead of starting
>>>> from scratch.
>>>>
>>>> -Rich
>>>>
>>>>
>>>>
>>>>
>>>> ---------- Forwarded message ----------
>>>> From: Don Murray <dmurray@xxxxxxxxxxxxxxxx>
>>>> Date: Wed, Oct 15, 2008 at 2:40 PM
>>>> Subject: [Idvsteering] 20081015: IDV 2.6 beta 1 available for testing
>>>> To: idvsteering@xxxxxxxxxxxxxxxx
>>>>
>>>>
>>>> Hi All-
>>>>
>>>> IDV 2.6 beta 1 is available for testing.  Please download it and
>>>> try out the new features:
>>>>
>>>> System Changes
>>>> # Use of netCDF 4.0 library
>>>> # Use of Java 1.6
>>>> Display Changes
>>>> # Publication Quality Graphics
>>>> Data Changes
>>>> # Remote Level III Radar access
>>>> # Objective Analysis of Point Data
>>>> # Weather Text Bulletins
>>>> # ATCF Tropical Storm track display
>>>>
>>>> You can download it from:
>>>>
>>>> http://www.unidata.ucar.edu/software/idv/release/test
>>>>
>>>> Right now, the documentation on the new features is limited
>>>> (i.e. non-existent)  beyond what is in the Release Notes:
>>>>
>>>> http://www.unidata.ucar.edu/software/idv/release/test/docs/userguide/ReleaseNotes.html
>>>>
>>>> We will be adding that in time for the
>>>> IDV training workshop in a couple of weeks.  See how far
>>>> you can get without docs. ;-)
>>>>
>>>> Please be prepared to discuss these new features at the
>>>> telecon in a couple of weeks.
>>>>
>>>> Thanks.
>>>>
>>>> Don, Jeff, Yuan
>>>> *************************************************************
>>>> Don Murray                               UCAR Unidata Program
>>>> dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
>>>> (303) 497-8628                              Boulder, CO 80307
>>>> http://www.unidata.ucar.edu/staff/donm
>>>> *************************************************************
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>>
>>>> --
>>>> Dr. Richard P. Signell   (508) 457-2229
>>>> USGS, 384 Woods Hole Rd.
>>>> Woods Hole, MA 02543-1598
>>>>
>>>
>>>
>>>
>>
>>
>>
>> --
>> Dr. Richard P. Signell   (508) 457-2229
>> USGS, 384 Woods Hole Rd.
>> Woods Hole, MA 02543-1598
>>
>
>
>



-- 
Dr. Richard P. Signell   (508) 457-2229
USGS, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598