[Bldg-sim] Revised TMY3 Weather Files now available on the Web
Joe Huang
yjhuang at whiteboxtechnologies.com
Mon Feb 9 15:51:50 PST 2015
Forgot to attach the snippet, but it seems like others have mentioned various tools that
can calculate the Wetbulb.
(have to look at this with a nonpropotional font for the columns to line up)
TRY CHICAGO 0 41.80 87.75 6 3 < - loc,year,lat,long,time-zone, solar flag
0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 < - monthly
clearness numbers
500.0 497.0 499.0 504.0 511.0 518.0 524.0 526.0 524.0 519.0 512.0 505.0 < - monthly
ground temps in R
1 1 1 20. 20. 29.3 10. 1 0 14 0.0019 0.081 7.0 0.0 0.0 2 17.
1 1 2 18. 18. 29.4 10. 1 0 14 0.0017 0.081 6.0 0.0 0.0 2 18.
1 1 3 17. 17. 29.4 10. 0 0 14 0.0016 0.082 6.0 0.0 0.0 2 16.
1 1 4 15. 16. 29.4 10. 0 0 14 0.0015 0.082 5.5 0.0 0.0 2 16.
1 1 5 15. 15. 29.4 10. 0 0 14 0.0015 0.082 5.0 0.0 0.0 2 15.
1 1 6 14. 14. 29.5 7. 1 0 14 0.0014 0.082 5.0 0.0 0.0 2 16.
1 1 7 13. 13. 29.5 9. 0 0 14 0.0012 0.083 4.5 0.0 0.0 2 16.
1 1 8 10. 11. 29.5 2. 0 0 14 0.0010 0.083 3.5 0.0 0.0 2 12.
1 1 9 9. 10. 29.5 0. 0 0 14 0.0009 0.083 3.5 0.0 0.0 2 11.
1 110 9. 10. 29.5 3. 0 0 13 0.0009 0.083 3.5 0.0 0.0 2 14.
1 111 10. 10. 29.6 7. 0 0 13 0.0010 0.083 3.5 0.0 0.0 2 12.
1 112 11. 12. 29.6 8. 0 0 14 0.0011 0.083 4.0 0.0 0.0 2 12.
1 113 12. 13. 29.5 7. 0 0 13 0.0011 0.083 4.5 0.0 0.0 2 13.
1 114 12. 13. 29.5 8. 0 0 13 0.0009 0.083 4.0 0.0 0.0 2 14.
1 115 12. 13. 29.5 7. 0 0 12 0.0010 0.083 4.0 0.0 0.0 2 16.
1 116 10. 12. 29.6 5. 0 0 12 0.0008 0.083 3.5 0.0 0.0 2 10.
1 117 9. 10. 29.6 5. 0 0 12 0.0008 0.083 3.0 0.0 0.0 2 11.
1 118 8. 9. 29.6 10. 0 0 12 0.0008 0.084 3.0 0.0 0.0 2 12.
1 119 9. 10. 29.6 10. 0 0 12 0.0009 0.083 3.5 0.0 0.0 2 11.
1 120 8. 9. 29.6 10. 0 0 11 0.0008 0.084 3.0 0.0 0.0 2 11.
1 121 8. 9. 29.6 10. 0 0 11 0.0008 0.084 3.0 0.0 0.0 2 13.
1 122 9. 10. 29.6 10. 0 0 11 0.0009 0.083 3.5 0.0 0.0 2 12.
1 123 10. 11. 29.6 10. 0 0 10 0.0009 0.083 3.5 0.0 0.0 2 10.
1 124 10. 11. 29.6 9. 0 0 12 0.0010 0.083 3.5 0.0 0.0 2 12.
^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
| | | | | | | | | | | | | | | | |
Mon| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
Day | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | |
Hour | | | | | | | | | | | | | |
| | | | | | | | | | | | | |
Wet Dry Atmos Cloud | | Wind Hum. Atmos Enth- Total Direct | Wind
Bulb Bulb Press Amount| | Dir Rat. Dens. alpy Solar Normal | Speed
(F) (F) (inHg) (0-10)| |(0-15) (lb/cf)(btu/lb) Rad. Solar | (knots)
| | (Btu/hr-sf) |
Rain Snow Cloud
(0,1)(0,1) Type
(0-2)
Note: Snow, rain, and wind direction are not needed; either total and direct
solar OR cloud type are required.
Joe
Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
yjhuang at whiteboxtechnologies.com
http://weather.whiteboxtechnologies.com for simulation-ready weather data
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"
On 2/9/2015 1:02 PM, Joe Huang wrote:
> Wet-bulb is not generally measured in weather stations, but can be derived from other
> measured climatic variables, such as dry-bulb temperature, dew-point temperature, and
> atmospheric pressure. Unfortunately, the derivation requires several equations and
> trial-and-error iteration (see Chapter 1 of the ASHRAE Handbook of Fundamentals). If
> you don't relish writing a script or program to do this, you can look at the unpacked
> DOE-2 format (*.FMT or *.FMTM) of the weather file, which does contain the calculated
> wet-bulb temperatures in the first data column (see attached sample snippet). However,
> you will need a utility Fortran program wthfmt2.f or wthfmt3.f to convert the packed
> (*.BIN or *.BINM) DOE-2 file to a humanly -readable text *.FMT or *.FMTM file.
>
> E-mail me for details.
>
> Joe
> Joe Huang
> White Box Technologies, Inc.
> 346 Rheem Blvd., Suite 205A
> Moraga CA 94556
> yjhuang at whiteboxtechnologies.com
> http://weather.whiteboxtechnologies.com for simulation-ready weather data
> (o) (925)388-0265
> (c) (510)928-2683
> "building energy simulations at your fingertips"
> On 2/9/2015 12:33 PM, RobertWichert wrote:
>> These weather files are great, thanks for the info, but I am trying to get wet bulb
>> temperature too, and they do not seem to give wet bulb temperatures.
>>
>> Any ideas on that, perhaps?
>>
>>
>> --
>> Robert P. Wichert P.Eng. LEED AP
>> CEPE CEA HERS I/II BPI BA
>> +1 916 966 9060
>> FAX +1 916 966 9068
>>
>>
>> ========================================
>> On 1/30/2015 9:10 PM, Joe Huang wrote:
>>> White Box Technologies (WBT), in collaboration with the National Renewable Energy
>>> Laboratory (NREL), has revised the TMY3 weather files to correct inconsistencies in
>>> units for illuminances, improve the reporting of Liquid Precipitation, replace all
>>> missing records with interpolated or filled values (chiefly for visibility, ceiling
>>> height, aerosol optical depth, and albedo), and add a new variable for Present Weather.
>>>
>>> Since their release in 2005, the TMY3 weather files covering 1,020 locations in the US
>>> and dependencies has become the standard set of weather files for use in computer
>>> simulations of solar energy conversion systems and buildings. The intent of this
>>> revision is not to redo the fundamental analysis, but correct some known errors and
>>> make modest improvements in the reporting of subsidiary climate variables.
>>>
>>> The only impact from these corrections and changes are for daylighting simulations
>>> that use the illuminance values, and for building simulations that use the liquid
>>> precipitation to model green roofs or moisture transport through the building
>>> envelope. The added Present Weather variable is not directly used in any simulation
>>> program, but allows the DOE-2 BINM files to have correct IRAIN and ISNOW flags,
>>> although these two variables are not being used in DOE-2. Filling in missing data for
>>> Visibility, Ceiling Height, etc., should have no impact on the use of the TMY3s, but
>>> improves their overall record-keeping.
>>>
>>> The revised TMY3 files in their native CSV format have been provided back to NREL and
>>> are available here: http://rredc.nrel.gov/solar/old_data/nsrdb/1991-2005/tmy3
>>>
>>> The revised TMY3 files in EPW and BINM formats are available for free download on the
>>> White Box Technologies web site at http://weather.whiteboxtechnologies.com/wd-TMY3 or
>>> by selecting File Type as "TMY3" at http:/weather.whiteboxtechnologies.com/search to
>>> search using GoogleEarth. The zip file names are unchanged, but the underlying EPW and
>>> DDY files will have the *TYA designation to distinguish them from the previous TMY3
>>> versions.
>>>
>>> For a more detailed description and full documentation of the revision, please see
>>> the attached memorandum.
>>>
>>> Joe
>>> --
>>> Joe Huang
>>> White Box Technologies, Inc.
>>> 346 Rheem Blvd., Suite 205A
>>> Moraga CA 94556
>>> yjhuang at whiteboxtechnologies.com
>>> http://weather.whiteboxtechnologies.com for simulation-ready weather data
>>> (o) (925)388-0265
>>> (c) (510)928-2683
>>> "building energy simulations at your fingertips"
>>>
>>>
>>> _______________________________________________
>>> Bldg-sim mailing list
>>> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
>>> To unsubscribe from this mailing list send a blank message toBLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG
>>
>>
>>
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>
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TRY CHICAGO 0 41.80 87.75 6 3 < - loc,year,lat,long,time-zone, solar flag
0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 0.98 < - monthly clearness numbers
500.0 497.0 499.0 504.0 511.0 518.0 524.0 526.0 524.0 519.0 512.0 505.0 < - monthly ground temps in R
1 1 1 20. 20. 29.3 10. 1 0 14 0.0019 0.081 7.0 0.0 0.0 2 17.
1 1 2 18. 18. 29.4 10. 1 0 14 0.0017 0.081 6.0 0.0 0.0 2 18.
1 1 3 17. 17. 29.4 10. 0 0 14 0.0016 0.082 6.0 0.0 0.0 2 16.
1 1 4 15. 16. 29.4 10. 0 0 14 0.0015 0.082 5.5 0.0 0.0 2 16.
1 1 5 15. 15. 29.4 10. 0 0 14 0.0015 0.082 5.0 0.0 0.0 2 15.
1 1 6 14. 14. 29.5 7. 1 0 14 0.0014 0.082 5.0 0.0 0.0 2 16.
1 1 7 13. 13. 29.5 9. 0 0 14 0.0012 0.083 4.5 0.0 0.0 2 16.
1 1 8 10. 11. 29.5 2. 0 0 14 0.0010 0.083 3.5 0.0 0.0 2 12.
1 1 9 9. 10. 29.5 0. 0 0 14 0.0009 0.083 3.5 0.0 0.0 2 11.
1 110 9. 10. 29.5 3. 0 0 13 0.0009 0.083 3.5 0.0 0.0 2 14.
1 111 10. 10. 29.6 7. 0 0 13 0.0010 0.083 3.5 0.0 0.0 2 12.
1 112 11. 12. 29.6 8. 0 0 14 0.0011 0.083 4.0 0.0 0.0 2 12.
1 113 12. 13. 29.5 7. 0 0 13 0.0011 0.083 4.5 0.0 0.0 2 13.
1 114 12. 13. 29.5 8. 0 0 13 0.0009 0.083 4.0 0.0 0.0 2 14.
1 115 12. 13. 29.5 7. 0 0 12 0.0010 0.083 4.0 0.0 0.0 2 16.
1 116 10. 12. 29.6 5. 0 0 12 0.0008 0.083 3.5 0.0 0.0 2 10.
1 117 9. 10. 29.6 5. 0 0 12 0.0008 0.083 3.0 0.0 0.0 2 11.
1 118 8. 9. 29.6 10. 0 0 12 0.0008 0.084 3.0 0.0 0.0 2 12.
1 119 9. 10. 29.6 10. 0 0 12 0.0009 0.083 3.5 0.0 0.0 2 11.
1 120 8. 9. 29.6 10. 0 0 11 0.0008 0.084 3.0 0.0 0.0 2 11.
1 121 8. 9. 29.6 10. 0 0 11 0.0008 0.084 3.0 0.0 0.0 2 13.
1 122 9. 10. 29.6 10. 0 0 11 0.0009 0.083 3.5 0.0 0.0 2 12.
1 123 10. 11. 29.6 10. 0 0 10 0.0009 0.083 3.5 0.0 0.0 2 10.
1 124 10. 11. 29.6 9. 0 0 12 0.0010 0.083 3.5 0.0 0.0 2 12.
^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
| | | | | | | | | | | | | | | | |
Mon| | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | |
Day | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | |
Hour | | | | | | | | | | | | | |
| | | | | | | | | | | | | |
Wet Dry Atmos Cloud | | Wind Hum. Atmos Enth- Total Direct | Wind
Bulb Bulb Press Amount| | Dir Rat. Dens. alpy Solar Normal | Speed
(F) (F) (inHg) (0-10)| |(0-15) (lb/cf)(btu/lb) Rad. Solar | (knots)
| | (Btu/hr-sf) |
Rain Snow Cloud
(0,1)(0,1) Type
(0-2)
Note: Snow, rain, and wind direction are not needed; either total and direct
solar OR cloud type are required.
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