On Thu, 5 May 2005, Doug Lindholm wrote:
> Hi Robb,
>
> Here's the bounding box they are interested in. All they need is an
> estimate of the amount of data. Do you have any thoughts on how to get
> such numbers for their data of interest:
>
> Metars, 1st order
> Metars, 2nd order
> Rawinsondes
> ACARS
>
> No need to bust our butts. I just figured someone here (you?) would be
> able to come up with a better estimate than I could.
>
> Thanks,
> Doug
>
> > Hi Doug,
> >
> > For our region of interest
> >
> > west - Brownsville, TX,
> > east - Mobile, Alabama,
> > south - 80 miles south into the Gulf,
> > north - Louisiana's northern boundary.
> >
> > I got the following latitude and longitude values from maporama.com.
> >
> > Place Boundary (latitude, longitude)
> > ---------------------------------------------------------------
> > Brownsville, TX West 25� 53' , -97� 29'
> > 25.899 , -97.496
> >
> > Mobile, Alabama East 30� 41' , -88� 3'
> > 30.686 , -88.053
> >
> > Louisiana boundary North 33� 1' , -92� 45'
> > 33.027 , -92.758
> >
> > 80 miles into Gulf South 28� 58' , -92� 23'
> > 28.976 , -92.386
> >
> > Region of interest:
> > Latitude: 33� 1' to 28� 58'
> > Longitude: -97� 29' to -88� 3'
Metar server bounding box:
the bounding box only works on 2 corner points, the lowerLeft (ll)
and the upperRight (ur) of the box. here's a url to obtain the stations in
the requested box:
http://motherlode.ucar.edu:8088/thredds/ldm/metar?returns=dqc&time=latest&ll=28.976:-97.496&ur=33.027:-88.053
to see the latest reports of stations in box:
http://motherlode.ucar.edu:8088/thredds/ldm/metar?returns=ascii&time=latest&ll=28.976:-97.496&ur=33.027:-88.053
or xml decoding of report
http://motherlode.ucar.edu:8088/thredds/ldm/metar?returns=xml&time=latest&ll=28.976:-97.496&ur=33.027:-88.053
time parameter can be set to: latest, 1hour, 6hour, 12hour, 1day, ... 5day
the current code is still in transition but the above features will still be
available when completed.
could you tell me the difference between the
> >>>>>> >>> Metars, 1st order: 270 sources
> >>>>>> >>> Metars, 2nd order: 1000 sources
robb...
> >
> > It doesn't have to be exact but closeby ranges are good enough for our
> > calculation. Thank you for helping us with this.
> >
> > thank you,
> > Nithya
> >
> >
> > On Wed, 4 May 2005, Doug Lindholm wrote:
> >
> >
> >>> Date: Wed, 04 May 2005 09:58:06 -0600
> >>> From: Doug Lindholm <lind@xxxxxxxx>
> >>> To: Beth A Plale <plale@xxxxxxxxxxxxxx>
> >>> Cc: Nithya Nirmal Vijayakumar <nvijayak@xxxxxxxxxxxxxx>,
> >>> Ying Liu <yingliu@xxxxxxxxxxxxxx>
> >>> Subject: Re: data products covering deep south
> >>>
> >>> Hi Beth,
> >>>
> >>> If you'd still like some estimates from me could you give me a latitude,
> >>> longitude bounding box?
> >>>
> >>> Thanks,
> >>> Doug
> >>>
> >>> Beth A Plale wrote:
> >>
> >>>> > Hi Doug,
> >>>> >
> >>>> > We're building a realistic workload that we can push at a grid based
> >>>> > stream service that extends dquob. We're modeling the workload after
> >>>> > Ivan, and quantifying the number of users that might swarm to the
> >>>> > server
> >>>> > all at once to get information either to visualize (500 users), image
> >>>> > by
> >>>> > image, or to push into an assimilation to run their own forecast
> >>>> > (another 500 users).
> >>>> >
> >>>
> >>>>> >> From that we can estimate storage, memory, and CPU needs of the grid
> >>>
> >>>> >
> >>>> > service. So your educated guess takes us a long way towards the level
> >>>> > of accuracy we need.
> >>>> >
> >>>> > thanks a lot for your help with this
> >>>> >
> >>>> > beth
> >>>> >
> >>>> > On Wed, 27 Apr 2005, Doug Lindholm wrote:
> >>>> >
> >>>
> >>>>> >> Hi Nithya,
> >>>>> >>
> >>>>> >> Could you give me a latitude, longitude bounding box? That would make
> >>>>> >> it easier to do some checking.
> >>>>> >>
> >>>>> >> How precise do the numbers need to be?
> >>>>> >>
> >>>>> >> Thanks,
> >>>>> >> Doug
> >>>>> >>
> >>>>> >> Nithya Nirmal Vijayakumar wrote:
> >>>>> >>
> >>>>
> >>>>>> >>> Hi Doug,
> >>>>>> >>>
> >>>>>> >>> Thank you very much for the information. We derived the number of
> >>>>>> >>> sources
> >>>>>> >>> primarily based on the 'building block 1, data information for
> >>>>>> >>> LEAD'
> >>>>>> >>> document posted to the Data thrust group. Would it be fair to say
> >>>>>> >>> that the
> >>>>>> >>> there will be roughly 10% of of the total number of Metars and
> >>>>>> >>> Rawinsondes
> >>>>>> >>> sources for this area?
> >>>>>> >>>
> >>>>>> >>> The total number of sources we have are
> >>>>>> >>>
> >>>>>> >>> Metars, 1st order: 270 sources
> >>>>>> >>> Metars, 2nd order: 1000 sources
> >>>>>> >>> Rawinsondes: 94 sources
> >>>>>> >>>
> >>>>>> >>>
> >>>>>> >>> thank you,
> >>>>>> >>> Nithya
> >>>>>> >>>
> >>>>>> >>> On Tue, 26 Apr 2005, Doug Lindholm wrote:
> >>>>>> >>>
> >>>>>> >>>
> >>>>>
> >>>>>>> >>> > Date: Tue, 26 Apr 2005 11:28:11 -0600
> >>>>>>> >>> > From: Doug Lindholm <lind@xxxxxxxx>
> >>>>>>> >>> > To: Beth A Plale <plale@xxxxxxxxxxxxxx>
> >>>>>>> >>> > Cc: Nithya Nirmal Vijayakumar <nvijayak@xxxxxxxxxxxxxx>,
> >>>>>>> >>> > Ying Liu <yingliu@xxxxxxxxxxxxxx>
> >>>>>>> >>> > Subject: Re: data products covering deep south
> >>>>>>
> >>>>>>>> >>> > > Hi Beth,
> >>>>>>>> >>> > > I'm still looking into a few things but here's a partial
> >>>>>>>> >>> > > answer:
> >>>>>>>> >>> > > Eta: The Eta model output is a CONUS product. It is
> >>>>>>>> >>> > > available in
> >>>>>
> >>>>>> >>> several
> >>>>>
> >>>>>>> >>> > resolutions: 80km, 40km, 20km, 12km. So you could consider
> >>>>>>> >>> > that as 1
> >>>>>>> >>> > source or 4. I think each resolution is generated by a unique
> >>>>>
> >>>>>> >>> model run
> >>>>>
> >>>>>>> >>> > (as opposed to a resampling of a single run) so I would be
> >>>>>
> >>>>>> >>> inclined to
> >>>>>
> >>>>>>> >>> > think of this as 4 sources.
> >>>>>>
> >>>>>>>> >>> > > GOES: There are currently 2 GOES satellites providing
> >>>>>>>> >>> > > regular
> >>>>>
> >>>>>> >>> data. GOES
> >>>>>
> >>>>>>> >>> > 12 (aka GOES East) would provide coverage for your area of
> >>>>>
> >>>>>> >>> interest. It
> >>>>>
> >>>>>>> >>> > provides 4 channels of data (measured in different spectral
> >>>>>>> >>> > band):
> >>>>>>> >>> > visible, water vapor, and 2 IR. So you could think of that as 1
> >>>>>
> >>>>>> >>> source
> >>>>>
> >>>>>>> >>> > or 4. I would consider it 1 source with 4 variables.
> >>>>>>
> >>>>>>>> >>> > > ACARS: This will vary depending on the number of flights
> >>>>>
> >>>>>> >>> reporting but
> >>>>>
> >>>>>>> >>> > we should be able to dig up a good estimate.
> >>>>>>
> >>>>>>>> >>> > > Still looking for info on the others.
> >>>>>>>> >>> > > Where did you come up with your numbers?
> >>>>>>>> >>> > > Doug
> >>>>>>>> >>> > > Beth A Plale wrote:
> >>>>>>>
> >>>>>>>>> >>> > > > Hi Doug,
> >>>>>>>>
> >>>>>>>>>> >>> > > > > In an ongoing streaming project we are trying to
> >>>>>
> >>>>>> >>> characterize the
> >>>>>
> >>>>>>>> >>> > > flows of data that cover the region outlined by the
> >>>>>>>> >>> > > bounding box:
> >>>>>>>
> >>>>>>>>>> >>> > > > > west - Brownsville, TX,
> >>>>>>>
> >>>>>>>> >>> > > east - Mobile, Alabama,
> >>>>>>>> >>> > > south - 80 miles south into the Gulf,
> >>>>>>>> >>> > > north - Louisiana's northern boundary.
> >>>>>>>
> >>>>>>>>>> >>> > > > > We know from talking to Carl Sinclair what Level II
> >>>>>>>>>> >>> > > > > and
> >>>>>
> >>>>>> >>> Level III > > radars
> >>>>>
> >>>>>>>> >>> > > cover that region, but are now looking for similar info for
> >>>>>>>> >>> > > Metars,
> >>>>>>>> >>> > > Acars, Rawinsondes, Eta, and GOES.
> >>>>>>>
> >>>>>>>>>> >>> > > > > Is there someone there, perhaps you, that could give
> >>>>>>>>>> >>> > > > > us an
> >>>>>
> >>>>>> >>> idea of the
> >>>>>
> >>>>>>>> >>> > > number of sources providing data on that region? For
> >>>>>>>> >>> > > instance,
> >>>>>
> >>>>>> >>> there
> >>>>>
> >>>>>>>> >>> > > are 5 GOES sources according to info we gathered earlier
> >>>>>>>> >>> > > (from
> >>>>>
> >>>>>> >>> Anne's
> >>>>>
> >>>>>>>> >>> > > compilation.) If the satellites are stationary, then the
> >>>>>>>> >>> > > sources
> >>>>>>>> >>> > > covering the deep south region might be 3 of the 5. Eta
> >>>>>>>> >>> > > might be
> >>>>>>>> >>> > > divided out into 1 source doing the east US, and one doing
> >>>>>>>> >>> > > the
> >>>>>
> >>>>>> >>> west US
> >>>>>
> >>>>>>>> >>> > > (I have no idea what is really done), so the deep south is
> >>>>>
> >>>>>> >>> covered by
> >>>>>
> >>>>>>>> >>> > > one source.
> >>>>>>>
> >>>>>>>>>> >>> > > > > Metars, 1st order: 270 sources
> >>>>>>>
> >>>>>>>> >>> > > Metars, 2nd order: 1000 sources
> >>>>>>>> >>> > > Rawinsondes: 94 sources
> >>>>>>>> >>> > > ACARS: 257 sources
> >>>>>>>> >>> > > GOES: 5 sources
> >>>>>>>> >>> > > Eta: 2 sources
> >>>>>>>
> >>>>>>>>>> >>> > > > > thanks a bunch!
> >>>>>>>>>> >>> > > > > beth
> >>>>>>>
> >>>>>>>> >>> > > --
> >>>>>>
> >>>>>>> >>> >
> >>>>>
> >>>>>> >>> *----------------------------------------------------------------------*
> >>>>>
> >>>>>>> >>> > | Doug Lindholm, Software Engineer | E-mail:
> >>>>>
> >>>>>> >>> lind@xxxxxxxx |
> >>>>>
> >>>>>>> >>> > | Unidata Program Center | Phone:
> >>>>>
> >>>>>> >>> 303-497-8659 |
> >>>>>
> >>>>>>> >>> > | UCAR Office of Programs
> >>>>>
> >>>>>> >>> | |
> >>>>>
> >>>>>>> >>> > | P.O. Box 3000 | There's no
> >>>>>
> >>>>>> >>> place |
> >>>>>
> >>>>>>> >>> > | Boulder, Colorado 80307-3000 | like
> >>>>>
> >>>>>> >>> $HOME |
> >>>>>
> >>>>>>> >>> >
> >>>>>
> >>>>>> >>> *----------------------------------------------------------------------*
> >>>>>
> >>>>>>> >>> >
> >>>>
> >>>>> >>
> >>>>> >>
> >>>>> >> --
> >>>>> >> *----------------------------------------------------------------------*
> >>>>> >> | Doug Lindholm, Software Engineer | E-mail:
> >>>>> >> lind@xxxxxxxx |
> >>>>> >> | Unidata Program Center | Phone: 303-497-8659
> >>>>> >> |
> >>>>> >> | UCAR Office of Programs |
> >>>>> >> |
> >>>>> >> | P.O. Box 3000 | There's no place
> >>>>> >> |
> >>>>> >> | Boulder, Colorado 80307-3000 | like $HOME
> >>>>> >> |
> >>>>> >> *----------------------------------------------------------------------*
> >>>>> >>
> >>>>> >>
> >>
> >>>
> >>> --
> >>> *----------------------------------------------------------------------*
> >>> | Doug Lindholm, Software Engineer | E-mail: lind@xxxxxxxx |
> >>> | Unidata Program Center | Phone: 303-497-8659 |
> >>> | UCAR Office of Programs | |
> >>> | P.O. Box 3000 | There's no place |
> >>> | Boulder, Colorado 80307-3000 | like $HOME |
> >>> *----------------------------------------------------------------------*
> >>>
>
==============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/
==============================================================================
