[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[IDV #XYD-642543]: query related to dew point and thermodynamic diagrams

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [IDV #XYD-642543]: query related to dew point and thermodynamic diagrams
  • Date: Tue, 09 Jul 2013 11:12:20 -0600
> On 07/09/2013 01:06 AM, Unidata IDV Support wrote:
> >> R/Sir
> >>
> >> I have temperature profiles (in Kelvin) and humdity profiles (in g/Kg)
> >> retrieved from sounder data (simulate datasets).
> >> How to go about generating dew point and then plotting thermodynamic
> >> diagrams?
> >> The derived quantities use temperature relative humidity but not
> >> humidity (in g/Kg).
> >> I have written products as CF complaint products so I am able to open
> >> them using GeoGridDataSource.
> >>
> >>
> >> regards
> >> Ghansham
> >>
> >>
> > Ghansham,
> >       To calculate the relative humidity based on the specific humidity, 
> > you also need the total pressure and the water vapor pressure. This is not 
> > in our derived table.
> >
> >
> > Yuan
> >
> > Ticket Details
> > ===================
> > Ticket ID: XYD-642543
> > Department: Support IDV
> > Priority: High
> > Status: Closed
> >
> I think we should add this one as satellite derived water vapor profiles
> are specific and not relative. Just a suggestion.
> Ghansham
> 
> 
Agree, maybe as a plugin.

Yuan

Ticket Details
===================
Ticket ID: XYD-642543
Department: Support IDV
Priority: High
Status: Closed