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<DIV>Arpan,</DIV>
<DIV> </DIV>
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<TD>The base for the historical output is the NOAA/NCEP/CFSR data set
descried in the recent article
<DIV class=insdpgtext>
<DIV>in the August 2010 <EM>Bulletin of the American Meteorological
Society </EM>available at - <A
href="http://journals.ametsoc.org/doi/suppl/10.1175/2010BAMS3001.1">http://journals.ametsoc.org/doi/suppl/10.1175/2010BAMS3001.1</A></DIV>
<DIV>This is a very comprehensive integration of 30 years of hourly
forecast data re-analyzed (basically recalculated using all available
observation data (land, sea, air and space) of what actually
happened. We have done a substantial amount of post-processing of
this data to make it usable, put a front end on it to make it accessible
and put a delivery back end on it to add in things like TMY (.EPW)
generation.</DIV>
<DIV> </DIV>
<DIV>Since the Virtual weather stations we create also do very localized
current conditions and 7-day hourly forecasts (what we think will be
needed for building energy monitoring and management), the system also
takes in all of the NOAA global and regional forecasts and all available
hourly weather station ground observations and integrates them every hour
to give very precise localized output. So all of our virtual
stations will have gap free hourly data from 30+ years back to 7 days
ahead. We can produce the files and forecasts now and with luck this
will all be available for direct access on line by announcement time later
this month.</DIV>
<DIV> </DIV>
<DIV>Does this help?</DIV>
<DIV> </DIV>
<DIV>Chuck</DIV>
<DIV> </DIV>
<DIV> </DIV></DIV></TD></TR></TBODY></TABLE>
<DIV> </DIV>
<DIV
style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">_____________________<BR>Chuck
Khuen<BR>Principal<BR>Weather Analytics
Inc.<BR>www.weatheranalytics.com<BR>781-856-5383</DIV>
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=arpanbakshi@gmail.com
href="mailto:arpanbakshi@gmail.com">Arpan Bakshi</A> </DIV>
<DIV><B>Sent:</B> Tuesday, January 04, 2011 6:15 PM</DIV>
<DIV><B>To:</B> <A title=chuck.khuen@wxaglobal.com
href="mailto:chuck.khuen@wxaglobal.com">Chuck Khuen</A> </DIV>
<DIV><B>Subject:</B> Re: [Bldg-sim] Real time Weather Data</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<DIV>Chuck,</DIV>
<DIV> </DIV>
<DIV>I am trying to understand how your sensor point system works. The weather
stations are not physical but virtual? This means the data is interpolated using
satellites and mathematical models?</DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV>Arpan</DIV>
<DIV><BR><BR> </DIV>
<DIV class=gmail_quote>On Tue, Jan 4, 2011 at 6:03 PM, Chuck Khuen <SPAN
dir=ltr><<A
href="mailto:chuck.khuen@wxaglobal.com">chuck.khuen@wxaglobal.com</A>></SPAN>
wrote:<BR>
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<DIV>Francisco,</DIV>
<DIV> </DIV>
<DIV>Unfortunately it is far more complex than that. While there is a
great deal of overlap in the data from a METAR station and the data in an EPW
file it is in a very different format and also it is highly unlikely that this
SBKB station has all of the sensors necessary to produce that needed for
EnergyPlus, particularly in the area of solar radiation...not to mention to
have a statistically valid sample you should have 30 years of data
</DIV>
<DIV> </DIV>
<DIV>We will soon be charging for this data – a TMY (.EPW) file for a specific
site – but since we can produce these for anywhere, I will run our system and
send you this file under separate cover.</DIV>
<DIV> </DIV>
<DIV>Chuck</DIV>
<DIV> </DIV>
<DIV
style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">_____________________<BR>Chuck
Khuen<BR>Principal<BR>Weather Analytics Inc.<BR><A
href="http://www.weatheranalytics.com/"
target=_blank>www.weatheranalytics.com</A><BR>781-856-5383</DIV>
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style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV><B>From:</B> <A title=massucci@gmail.com href="mailto:massucci@gmail.com"
target=_blank>Francisco Massucci</A> </DIV>
<DIV><B>Sent:</B> Tuesday, January 04, 2011 5:27 PM</DIV>
<DIV><B>To:</B> <A title=bldg-sim@lists.onebuilding.org
href="mailto:bldg-sim@lists.onebuilding.org"
target=_blank>bldg-sim@lists.onebuilding.org</A> </DIV>
<DIV><B>Subject:</B> Re: [Bldg-sim] Real time Weather Data</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">Chuck,
<DIV> </DIV>
<DIV> I'm trying to simulate models located on Campinas,Sp, a Brazilian
city (near <B>SBKP</B> station).I made that point because I wonder if the Real
Data Weather has the same kind of data than a METAR code, used for aviation.
Or if it have the same number of variables in a commom .EPW file, used for
simulate buildings. A METAR code is quite simple than a EPW file</DIV>
<DIV> </DIV>
<DIV> I would appreciate it if you could send me data from Campinas,SP -
Brazil.</DIV>
<DIV> </DIV>
<DIV>Sorry about my bad english.</DIV>
<DIV> </DIV>
<DIV>Francisco.</DIV>
<DIV>---------------------------------------------------------------------</DIV>
<DIV>Francisco,</DIV>
<DIV> </DIV>
<DIV>.EPW is a format that is for one full year of hourly weather data for a
defined set of weather variables utilized in its model (and others).
While this can be any specific year it is typically a Typical Meteorological
Year (TMY) constructed by statistically selecting 12 most ‘representative’
months from 30 years of hourly data. If you are looking for a .EPW (TMY)
file we are about to announce a new system which will make these available for
nearly anywhere. Happy to explain more about the weather input to
energyplus or provide samples if it helps.</DIV>
<DIV> </DIV>
<DIV>Chuck</DIV>
<DIV> </DIV>
<DIV>_____________________<BR>Chuck Khuen<BR>Principal<BR>Weather Analytics
Inc.<BR><A href="http://www.weatheranalytics.com/"
target=_blank>www.weatheranalytics.com</A><BR>781-856-5383</DIV>
<DIV><BR><BR>
<DIV class=gmail_quote>On Tue, Jan 4, 2011 at 7:09 PM, Drury B Crawley <SPAN
dir=ltr><<A href="mailto:dbcrawley@gmail.com"
target=_blank>dbcrawley@gmail.com</A>></SPAN> wrote:<BR>
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<DIV>See the documentation for real-time weather data here: <A
href="http://apps1.eere.energy.gov/buildings/energyplus/pdfs/weatherdata_guide_34303.pdf"
target=_blank>http://apps1.eere.energy.gov/buildings/energyplus/pdfs/weatherdata_guide_34303.pdf</A></DIV>
<DIV> </DIV>
<DIV>The real-time weather data is recent data--you can choose the time
period you want. The .EPWs on the web site are normally 'typical' weather
files, usually constructed from months (determined to be most typical) from
many different years.</DIV>
<DIV> </DIV>
<DIV>The weather data sources page has information about the various data
sources: <A
href="http://apps1.eere.energy.gov/buildings/energyplus/weatherdata_sources.cfm"
target=_blank>http://apps1.eere.energy.gov/buildings/energyplus/weatherdata_sources.cfm</A></DIV>
<DIV><BR><BR> </DIV>
<DIV class=gmail_quote>
<DIV>
<DIV></DIV>
<DIV>On Tue, Jan 4, 2011 at 3:10 PM, Francisco Massucci <SPAN dir=ltr><<A
href="mailto:massucci@gmail.com"
target=_blank>massucci@gmail.com</A>></SPAN> wrote:<BR></DIV></DIV>
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<DIV></DIV>
<DIV>Hi,
<DIV> </DIV>
<DIV>I'm new in energyplus. I would like to know if the Real Time Weather
Data has the same data of an .EPW file.</DIV>
<DIV> </DIV>
<DIV>Regrads </DIV>
<DIV>Francisco Massucci</DIV>
<DIV> </DIV></DIV></DIV>
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