AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS, INC.
1791 Tullie Circle, NE, Atlanta, Georgia 30329
404-636-8400
TC/TG/TRG MINUTES COVER SHEET
(Minutes of all meetings are to be distributed to all persons listed below within 60 days following the
meeting.)
TC/TG/TRG No.
TC 4.2
DATE: __Feb. 8, 2000
TC/TG/TRG TITLE:
Weather Information
DATE OF MEETING:
Feb. 8, 2000
MEMBERS PRESENT
Dru Crawley (CH)
Bob Morris (VCH)
Joe Huang (SEC)
Bill Bahnfleth (Program)
Chip Barnaby
Achilles Karagiozis
Ron Petersen
Marc Plantico
Oscar Richard
Jack Robert
Larry Degelman
Hilda Snelling (CM)
LOCATION:
MEMBERS ABSENT
Tom Stoffel
Henry Amistadi (CM)
Raymond Bahm (CM)
Don Hadley (CM)
Mark Kramer (CM)
David Menicucci (CM)
Richard Perez (CM)
Gideon Rozen (CM)
Mike Squires (CM)
David Wood (CM)
TAC CHAIR
TAC SECTION HEAD
RAC RESEARCH LIAISON
STANDARDS LIAISON
PROGRAM LIAISON
JOURNAL LIAISON
HANDBOOK LIAISON
ENV HEALTH COMMITTEE LIAISON
STAFF LIAISON (RESEARCH)
STAFF LIAISON (STANDARDS)
STAFF LIAISON (TECH SERVICES)
Erv Bales
Byron Jones
Carl Speich
Richard Beck
Larry Degelman
none
David Claridge
David Grimsrud
William Seaton
Claire Ramspeck
Martin Weiland
Abbreviations: CH = Chair
VCH = Vice Chair
SEC = Secretary
CM = Corresponding Member
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Dallas
EX/OFFICIO MEMBERS
AND ADDITIONAL
ATTENDEES
Carl Speich (RAC Liaison)
Don Colliver
Roberto Lamberts
Steve Bruning
M. Nady Said
James Moulton
Minutes of Meeting
ASHRAE TC 4.2 - Weather Information
Tuesday Feb 8, 2000, Dallas TX
1. Call to Order and Roll Call
TC 4.2 Chair Dru Crawley called the meeting to order at 1:05 PM and roll call was taken. A quorum was
established with 9 of 10 voting members present. (The agenda is provided in Attachment A.)
2. Announcements
Chair Dru Crawley thanked Don Colliver for creating the Web site for TC 4.2 and encouraged TC members
to visit the site. Several members also added their appreciation for the fine work done by Don. Roberts
moved that the TC approve the Web site. Motion was seconded by Barnaby, and passed 9-0-0. Morris asked
what would be appropriate material to be put on the Web site. Plantico suggested that TC 4.2’s recruitment
announcement be posted to the Web site. This request was noted and accepted by Colliver.
Chair recognized Research Liaison, Carl Spiech. Spiech stated his awareness that the TC has two Work
Statements to be voted on at this meeting, and recommended that the TC send him new Work Statements via
e-mail as soon as they have been approved.
3. Approval of Minutes
Snelling requested the minutes be corrected to indicate that she was present at the Seattle meeting. Barnaby
moved, and Roberts seconded, that the minutes from the TC 4.2 meeting on June 22, 1999 in Seattle be
accepted as amended. Motion carried 8-0-3, chair not voting.
4. Research
Research Chair Morris reported that the Research Subcommittee met on Monday, Feb. 7, and reported on the
status of the ongoing TC 4.2 activities as described below. (Minutes of the research subcommittee are shown
in Attachment B).
1015-RP International Weather for Energy Calculations (IWEC). The PMS met with contractor
(Numerical Logics, Waterloo, Ontario) on Sunday. The project has fallen one year behind schedule. Since
the work in general has been progressing well, Morris recommends that the TC grant the contractor a no-cost
extension for one year. The contractor has selected 200 international sites based on various criteria including
spatial distance, population, and availability of solar data from the World Radiation Database for calibrating
the contractor’s solar model. The PMS requested that locations with solar radiation data but very small
populations be switched to nearby large population centers using the solar coefficients for the former
locations. The PMS discussed with the contractor the interpolation method for missing data, and concurred
on the following: 1) maximum three days of missing data, 2) simple interpolation from previous and
subsequent days with available data. Based on these comments, the contractor will produce 10 sample
IWEC weather files for the PMS to review and compare to available data from other sources. Morris moved
that Numerical Logic be granted a No-cost Extension to March 31, 2001. Barnaby seconded the motion, and
passed 9-0-1, chair abstaining. Minutes of the PMS meeting are shown in Attachment C.
Research Plan for 2000-2001.
Morris reports that there are three items currently on the Research Plan. The first is adapting ASOS weather
data to allow for estimation of solar radiation data, which has been rated as high priority. The other two items
are 1) environmental conditions for hygrothermal analysis, which is not rated, and 2) the effect of Global
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Climate Change on ASHRAE design conditions. There is a draft Work Statement on the first item that has
been discussed in the Research Subcommittee meeting, but no action taken on the second.
Chair noted that ASHRAE headquarters has warned that they are receiving more Work Statements than for
which they have funding, and so will be asking TCs to justify the Work Statements better and prioritize them.
Work Statements under Development
Huang reported on the latest changes to the Work Statement titled, “Development of Procedures to Utilize
Automated Surface Observing System (ASOS) Weather Data in Building Energy Simulations”. The Work
Statement will be revised to narrow the scope specifically to the development of a solar model from the data
available on ASOS, and eliminate all references to the use of external information such as satellite data. The
intent is for the Work Statement to determine to what degree the available ASOS data is usable, while leaving
any enhancements of that data from other sources, esp. estimation of solar radiation from satellite data, to a
separate future activity. Huang will coordinate with Morris getting the revised Work Statement to the
membership for comments, with the intention of getting an approved Work Statement to ASHRAE by May
15. Morris noted that the revised Work Statement could be circulated to the membership by e-mail, with
mailings to Snelling and Richard.
Morris noted that there has been a lot of activity on estimating solar data from satellite data, with work being
done at his organization in Canada, as well as by Richard Perez and at NREL. Morris agreed to report on the
progress of that work to the committee.
The next Work Statement in progress is on “Environmental Weather Loads for Hygrothermal Analysis” by
Kargiozis from TC 4.4. The main problem is the condensation of water in the building envelope. Because of
the long history in moisture build-up in the building fabric, TC 4.4 would like to develop a design year for
hygrothermal analysis. There was an extensive discussion of this Work Statement at the Research
Subcommittee meeting, the gist of which was the absence of a defined method for developing such a design
year for hygrothermal analysis. The consensus at the Research Subcommittee meeting was that this was
primarily an engineering, rather than weather data, issue. There was a seminar on this same topic earlier in the
day co-sponsored by TC 4.4 and 4.2, during which different opinions were expressed as to what constituted a
design year for hygrothermal analysis. Richards noted that rain data was very sensitive to location and
microclimate variations. Degelman said that the morning seminar confirmed to him that the Research
Subcommittee made the right decision in referring the issue back to TC 4.4.
The next Work Statement in progress is titled, “Investigate the Impact of Global Climate Change on the
ASHRAE Design Conditions.” This Work Statement is being put in abeyance, because the time period of
Global Climate Change is much longer than the economic life span of a building.
The Chair noted that there are no other Work Statements in progress, and that the Committee should think
about new Work Statement topics. Morris announced that he will circulate the RTARs to all Committee
members.
5. Handbook
Morris gave a brief summary of the Handbook meeting that was held on Sunday afternoon. There is no major
revision of Chapter 26, with only minor editorial changes to the text and table headings. These were discussed
during the meeting, and will be submitted to ASHRAE on March 22nd. In the meantime, however, a new
request has been received from TC 4.1 (Loads Calculations) to add monthly maximum temperatures to
Chapter 26. Barnaby reported on a lunch meeting held on Monday with representatives from TC 4.1. It was
decided that TC 4.2 will add 24 numbers per location for design dry-bulb and coincident dew point
temperatures by month for the 1% Design Criterion only. Degelman said that engineers are more accustomed
to seeing mean coincident wet-bulb rather than dew point temperatures. Morris will mail the edited text to the
TC 4.2 members for a letter ballot. Barnaby suggested that in addition the new tables requested by TC 4.1 be
mocked up and circulated.
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6. Program
Bill Bahnfleth reported on the TC 4.2 program. There was one seminar at Dallas on the use of weather data
for hygrothermal analysis jointly sponsored by TC 4.2 and TC 4.4. Karagiozis reported that the seminar was
well attended, stimulated a great deal of discussion, and received high ratings.
There were two technical papers presented at this conference, one presented by Don Colliver at a technical
session on the work from RP-890, and the other presented by Sandy Klein at a poster session on the work
from RP-962.
There will be a symposium at Minneapolis on "International Experience in Using Weather Data", to be
chaired by Dru Crawley, and a symposium at Orlando with the same title as the seminar in Dallas on weather
data for hygrothermal analysis, to be chaired again by Achilles Karagiozis. Bahnfleth moved that the
program plan be accepted. Motion was seconded by Barnaby, and passed unanimously. The program plan is
shown in Attachment D.
7. Membership
Richards reported that nine members will be rotating off, including Huang, Degelman, Plantico in 2002, and
Snelling and Karagiozis in 2003. The following people have been off the committee for one year and can
rotate back on - Amistadi, Bahnfleth, Hadley, Cramer, Bahm, Menicucci, and Perez. Several members noted
that of these listed; only Bahnfleth has been here consistently, and will return.
The Chair announced that the new membership list has already been determined. Morris will be the incoming
chair, Huang vice-chair, Petersen secretary, Crawley research, Bahnfleth program, and Plantico handbook.
8. Standards
Morris reported that the only tangible activity is the existence of SSPC-169P, "Weather data for ASHRAE
Building Standards”. The committee’s plan is to take the existing weather data, turn it into a standard, and
have this then referenced by other standards. Crawley and Morris will develop a draft for review by the
Committee.
9. Old Business
AFH 32-1163(I) Engineering Weather Data (formerly AFM 88-29). Plantico reported that the Air Force
Combat Climatology Center (AFCCC) has completed the update to AFH 32-1163 (I) (commonly referred to
as the “Blue Book” or “engineering binned data”). There is binned data for 800 stations and it is available to
military personnel via the AFCCC Web site. However, the AFCCC will allow NCDC to put this data on a CD
and distribute it. Crawley said that this does not suit ASHRAE's needs on SPPC-169P, which requires that
the data be reviewed and published under SPPC-169P. Plantico agreed to check into this possibility with the
Air Force.
Weather Data for India and Pakistan. Crawley reported on the ISHRAE weather data effort in India. Crawley
believes that they have finished their report, but that he has not received a copy. Crawley suggests that the
ISHRAE data not be included in the Handbook because 1) ISHRAE’s criteria for data completeness and
length of records is more lax than TC 4.1’s, and 2) comparisons with the values derived by TC 4.1 from
DATSAV2 data was inconsistent. Crawley recommended that this item be taken off the agenda.
10. New Business
Crawley reported that most committee members received copies of Weather Maker from NREL. Huang asked
whether others on the committee have looked at the extrapolation procedure used to derive weather data for
secondary sites. Crawley wanted committee members to take a look at the extrapolation procedures in the
Weather Maker.
4
Crawley mentioned that various organizations or ASHRAE chapters, e.g., ISHRAE, Mexico, Puget Sound
Washington, etc., have sought guidance on creating weather design values. Crawley suggests that the
committee should refer them to RP-890, and then to RP-1171 when that project is completed.
Huang mentioned that he attended a Weather Committee meeting of the Region X (California) chapter, which
had a similar interest in updating the design weather tables in their Region X Climate Data book.
Barnaby suggested that the Committee could provide the 4.2 Web site as a location for posting data from
other sources. Huang will check into this with Region X, and Crawley will contact Puget Sound to do the
same. Crawley agreed to write an announcement for the Insights to announce that TC 4.2 will welcome
weather data from Regional chapters.
Morris suggested that the Web site have more explanation of how the data were derived and explain the
psychrometrics.
Roberto Lamberts explained his work in developing weather data for Brazil. Lamberts will circulate the URL
for the Brazilian weather data to the Committee members.
11. Executive Session
The meeting moved to an executive session to discuss contractor selection for two Work Statements. All
guests and corresponding members asked to leave.
The first contractor selection was for 1171-TRP. Morris was the chair of the proposal evaluation committee,
other members being Stoffel, Crawley, and Barnaby. Morris briefly described the objectives of the Work
Statement as to look at the effects of missing data, investigate ways to estimate design conditions at locations
w/o hourly data, and report on episodes when design conditions are exceeded. ASHRAE receive only one
proposal from Univ. of Nebraska, Ken Hubard Principal Investigator. The PMS felt that the proposed team is
extremely good and well rounded, with a mix of statisticians and scientists and are well qualified to do the
work. This is reflected in an aggregate score of 92.6 from the reviewers. Carl Speich asked the TC to justify
the Work Statement again because of the single bidder. Morris has written a justification and read it to the
Committee. Barnaby moved that TC 4.2 recommend that 1171-TRP be awarded to Univ. of Nebraska,
seconded by Huang. Motion passed 7-0-1, 2 out of room. Morris remains as the chair of the PMS, other
members being Plantico, Crawley, and Stoffel.
The second contractor selection was for 1170-TRP. Morris chaired the proposal evaluation committee for
RP-1170; other members were Barnaby, Crawley, and Stoffel. Two proposals were received—from Joe
Huang and Associates, Joe Huang, Principal Investigator, and National Climatic Data Center, Marc Plantico,
Principal Investigator. Both proposals were considered strong—each in different ways. After much
discussion, the TC voted 6-0-1, 3 out of room to recommend that 1170-RP be awarded to National Climatic
Data Center. Degelman (chair), Karagiozis, and Pedersen were appointed to the Project Monitoring
Subcommittee.
11. Adjournment
Crawley adjourned the meeting at 3:35 pm.
The next meeting of TC 4.2 will be Tuesday, June 27, 2000 in Minneapolis.
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ATTACHMENT A
2000 Winter Meeting Schedule
TC 4.2 Weather Information and Related Activities
Dallas, Texas
Time/Date
Meeting/Event
Room, Floor, Hotel
Sunday, 6th February 2000
8:00 AM to 8:30 AM
Colliver et al. Technical Paper,
890-RP, "Development of the Design Climatic
Data for the 1997 Handbook of Fundamentals”
1:00 to 3:00 PM
PMS RP-1015 International Weather for
Energy Calculations
Executive Boardroom,
2nd floor, Adam’s Mark
3:00 to 4:30 PM
TC 4.2 Handbook Subcommittee
Executive Boardroom,
2nd floor, Adam’s Mark
?
Monday, 7th February 2000
10:00 AM to 12:15 PM
SSPC 169P Weather Data for Building Design
Standards
Majestic 10,
37th floor, Adam’s Mark
4:15 to 6:30 PM
TC 4.2 Research Subcommittee
City View 7,
4th floor, Adam’s Mark
Tuesday, 8th February 2000
9:00 AM to 10:00 AM
Klein et al. Poster Presentation,
962-RP, "Automated Generation of Hourly
Design Sequences"
?
10:15 AM to 12:15 PM
Seminar 39, "Which Weather Data Should
You Use for Hygrothermal Simulations?"
?
1:00 to 3:30 PM
TC 4.2 Weather Information
? Location not listed in preliminary program.
6
Trinity 4,
3rd floor, Adam’s Mark
ATTACHMENT A
ASHRAE TC 4.2 Weather Information
Agenda for the 2000 Winter Meeting
Dallas, Texas
rd
Trinity 4, 3 floor, Adam’s Mark Hotel
Tuesday, 8th February
1:00 – 3:30 PM
1:00 pm Call to order and Roll Call (Crawley/Huang)
(Update addresses, phone numbers with ASHRAE HQ)
1:10 pm Introduction of liaison representatives from standing committees
1:15 pm Approval of minutes from Seattle June 1999 meeting
Subcommittee Reports:
1:20 pm Research (Morris)
 1015-RP Typical Weather Years for International Locations
 Contractor Recommendation
 1170-TRP Identify and Characterize International Weather Data Sets and Sources
 1171-TRP Sources of Uncertainty in the Calculation of Design Weather Conditions in the
ASHRAE Handbook of Fundamentals
 Research Plan for 2000-2001
 Work Statements in Progress
 Development of Procedures to Utilize Automated Surface Observing System (ASOS) Weather
Data in Building Energy Calculations
 Environmental Weather Loads for Hygrothermal Analysis
 Investigate the Impact of Global Climate Change on the ASHRAE Design Conditions

2:10 pm Handbook (Roberts)
2:30 pm Program (Bahnfleth)
2:40 pm Membership (Richard)
2:50 pm Standards (Crawley)
 SSPC 169P Weather Data for Building Design Standards (Morris)
3:00 pm Old Business
 Update of AFM 88-29, Engineering Weather Data (Plantico/Squires)
 Weather Data for India and Pakistan (Crawley)

3:15 pm New Business
I.
Energy-10 Weather Maker
II.
Guidance for Creating Design Conditions
3:25 pm Announcements
3:30 pm Adjourn
Next meeting:
7
Minneapolis, 27th June 2000
ATTACHMENT C
Minutes of the Meeting of the ASHRAE TC 4.2 Research
Subcommittee
February 7, 2000, 4:15 - 6:30PM
Dallas, TX
In Attendance:
Dru Crawley
Marc Plantico
Oscar Richard
Larry Degelman
Jack Roberts
Robert Morris
Achilles Karagiozis
Don Colliver
Joe Huang
Fred Buhl
Chip Barnaby
Hilda Snelling
TC 4.2 Research Chair
The meeting agenda is attached.
Call to Order:
The Chair called the meeting to order at 4:20 PM.
8
ATTACHMENT C
Changes to the Agenda:
There was a request for a new agenda item from a number of participants. TC 4.1
(Load Calculation Data and Procedures) had requested that TC 4.2 develop
monthly design temperatures for Chapter 26 of the 2001 Handbook of
Fundamentals (HOF) that can be referenced in Chapter 27 for load calculations.
The new information is needed primarily for design of energy systems in buildings
whose extreme loads can occur as a result of solar gains in any month. After a
brief discussion it was agreed that the information could be extracted from the
data sets used with RP-890 from which the design temperatures in the 1997 HOF
Chapter 26 were compiled. It was further agreed that there was no need for a
research project, and the issue could be handled as part of Handbook activities.
Crawley, Barnaby and Colliver agreed to follow up the issue with TC 4.1 members
who made the request to clearly determine the requirements and specifications,
then follow up to arrange for the information to be included with the TC 4.2
Chapter 26 revision for the 2001 HOF.
Research Plan 2000/2001:
Morris reviewed the ASHRAE research plan for 2000/2001, noting that of the three
TC 4.2 projects submitted after approval at the Seattle meeting in June 1999,
“Development of procedures to Utilize automated surface observing system
(ASOS) weather data in building energy calculations” was the only one on the
“prioritized” list. The other two, “Environmental Loads for Hygrothermal Analysis”
and “Impacts of Climate Change on ASHRAE Design Psychrometric Conditions”
were “non-prioritized”. Morris agreed to provide the TC 4.2 research plan to the
TC 4.2 Webmaster for posting on the TC 4.2 web site.
1015-RP International Weather Years for Energy Calculations:
Morris reviewed the progress to date, noting particularly that a one-year no-cost
extension would be requested.
1170–TRP Identify and Characterize International Weather Data Sets and Sources:
A PMS had met to evaluate bids the previous day. The results would be discussed
and recommendations compiled in executive session at the TC 4.2 meeting the
following day.
1171-TRP Sources of Uncertainty in the Calculation of Design Weather Conditions
in the ASHRAE Handbook of Fundamentals:
A PMS had met to evaluate bids the previous day. The results would be discussed
and recommendations compiled in executive session at the TC 4.2 meeting the
following day.
Draft WS - Development of procedures to utilize Automated Surface Observing
System (ASOS) weather data in building energy calculations:
9
ATTACHMENT C
There was considerable discussion on this item. There are two general
approaches to the issue. First, new algorithms could be developed and evaluated
that use hourly ASOS weather data in the same general manner as the existing
models that use human observations. An obvious difficulty arises from the fact that
the ASOS (and AWOS in Canada) observations do not provide cloud layers and
sky conditions above 12,000 (10,000 in Canada) feet above ground. To address
this issue, there is some activity outside of ASHRAE to investigate the use of
satellite data for estimating solar radiation at the earth’s surface. The existing draft
work statement covers both approaches. There was general agreement that the
work statement should only reflect the former approach since it could be done
more quickly. Interested members will monitor the progress on the use of satellite
data, and consider how there might be a coordinated approach taken with
ASHRAE possibly participating, or at least using the results. In particular, Morris
agreed to gather information on activities using satellite data currently underway
elsewhere and report at the Minneapolis meeting. Joe Huang agreed to revise the
existing work statement to focus solely on the development of algorithms that use
ASOS / AWOS data.
Draft WS - Environmental Weather Loads for Hygrothermal Analysis:
This item generated considerable discussion of the draft work statement
developed by Karagiozis, intended for a TC 4.2 lead with TC 4.4 co-sponsorship.
The work as outlined was comprehensive, starting with investigating algorithms to
compile a “typical or design moisture year” for all the intended uses of building
envelope design to account for moisture transport. It also included evaluating the
algorithms, selecting one for implementation, acquiring the required weather data,
and producing “typical or design moisture years” with the selected method for a
number of locations. After considerable discussion it became clear that the main
research component of this project was related to selecting the algorithm that
would correctly identify weather conditions relevant to the moisture transport
issues in building envelope design. There is a wide scope of physical processes
(water vapour transport, condensation, rain infiltration, solar radiation, ambient
humidity, etc.) that affect energy, structural and durability aspects of the building
envelope. Thus, there is more of engineering than meteorological slant to the
project. There was consensus that TC 4.4 should be the lead project, and provide
the appropriate engineering expertise. TC 4.2 will participate and provide
meteorological support as co-sponsor. Karagiozis, Crawley, and Morris agreed to
follow up with this project and its work statement with TC 4.4.
Draft WS - Impacts of Climate Change on ASHRAE Design Psychrometric
Conditions:
No draft had been prepared yet. The issue is important but there was discussion
on the most useful approach considering that energy systems and equipment
often are replaced or retrofitted within periods of time that are comparable to the
rate of climatic change that could result in significantly different design
temperature and psychrometric conditions (about 30 years). For instance, regular
updating of the design conditions (say every 10 years) may be sufficient to react
appropriately to climatic change. Members agreed to give more consideration with
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ATTACHMENT C
respect to how the project can be structured to give the most useful results.
Discussion will continue at the Minneapolis meeting.
Other Business:
The need for soil temperature information for building energy calculations was
raised and noted.
The meeting was adjourned at 6:30.
Minutes prepared by R. Morris March 12, 2000.
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ATTACHMENT C
AGENDA
Research Subcommittee
ASHRAE TC 4.2 Weather Information
4:15-6:30 pm, Monday, February 7, 2000
City View 7, 4th floor, Adam’s Mark
Dallas, TX
4:15
Call to order / changes to the agenda
4:20
Research Plan 2000-2001
4:30
RP-1015 Typical Weather Years for International Locations
4:45
1170-TRP Identify and Characterize International Weather
Data Sets and Sources
5:05
1171-TRP Sources of Uncertainty in the Calculation of Design
Weather Conditions in the ASHRAE Handbook of
Fundamentals
5:25
Draft WS - Development of procedures to utilize Automated
Surface Observing System (ASOS) weather data in building
energy calculations
5:45
Draft WS - Environmental Weather Loads for Hygrothermal
Analysis
6:05
Draft WS - Impacts of Climate Change on ASHRAE Design
Psychrometric Conditions
6:20
Other Business
6:30
Adjourn
12
ATTACHMENT C
Minutes of the Meeting of the ASHRAE Project Monitoring Subcommittee for
RP-1015 International Weather for Energy Calculations
February 6, 2000, 1:00-3:00PM
Dallas, TX
In Attendance:
Dru Crawley
Jack Roberts
Didier Thevenard
Marc Plantico
Oscar Richard
Robert Morris
Hilda Snelling
Joe Huang
PMS member
Numerical Logics
PMS member
PMS member & Chair
Didier Thevenard, principal investigator for the contractor, presented the progress
of work since the last meeting in June 1999, in Seattle.
Location Selection:
Didier described the selection of a draft list of 235 locations, for which the hourly
solar radiation amounts will be calculated, leading to application of the TMY
methodology for the production of International Weather Year for Energy
Calculation files. Although only 200 files are required as deliverables, the process
will start with more since some will likely prove unacceptable due to missing or
poor data.
The criteria for selection, in addition to as even geographic coverage on the
continental scale as practical, and inclusion of large population centres, included
the following criteria concerning available data:
The DATSAV2 data completeness was at least 80% of 3-hourly data.
Cloud amounts were reported so the solar radiation hourly amounts can be
estimated using the Kasten model.
Observed solar radiation data from the World Radiation Data Centre is available
for at least part of the time to determine coefficients required by the solar radiation
model, and to perform an evaluation of the model performance.
There was considerable discussion. The PMS requested that Didier consider
adding Alice Springs and Hobart in Australia. Didier also agreed to include
13
ATTACHMENT C
Glasgow and Edinburgh by using coefficient values determined from nearby sites,
Oban and Leuchars, respectively. Coefficients determined from San Antonio will
be transferred to Monterey. In addition, Panama and Acapulco will be added in
Mexico.
Didier will be ordering the supplementary cloud data from NCDC for the agreed
upon 235 locations.
The next task involves compiling a first set of IWEC files for evaluation and PMS
approval before the final production runs are made. Didier agreed to produce
evaluation files for the following locations:
Singapore, Malaysia
Warsaw, Poland
Beijing, China
Shanghai, China
London Gatwick, UK
Mexico City, Mexico
Tokyo, Japan
Another location in Japan – probably Sapporo
Havana, Cuba
Sydney, Australia
Milan, Italy
Interpolation:
There was a discussion of the interpolation method to be used to fill gaps. It was
agreed that up to 3 days would be filled, with a suitable simple method that
respects the diurnal variation inherent in the hourly weather.
Schedule:
Since the project has fallen behind schedule the PMS agreed to recommend that
TC 4.2 request a no-cost extension for one year. Didier agreed to provide test files
to the PMS well in advance of the next meeting in Minneapolis.
The meeting was adjourned at 3 PM.
Minutes by R. Morris – March 11, 2000.
14
ATTACHMENT D
TC 4.2 Program Plans
As of Dallas Meeting, Feb. 9, 1999
W. Bahnfleth
ACTUAL
Dallas, February 2000
1. Seminar
Which Weather Data Should You Use for Hygrothermal Calculations?
Achilles Karagiozis (co-sponsored by SPC 160P)
Technical papers presented:
Development of the Design Climatic Data for the 1997 ASHRAE Handbook-Fundamentals (RP-890)
Co-sponsor TC 3.5 Desiccant and Sorption Technology
Donald G. Colliver, Ph.D., P.E., Fellow, Richard S. Gates, Ph.D., P.E., Member, Thomas Burks, Ph.D., and
Hanzhong Zhang, Ph.D., University of Kentucky, Lexington, KY
Automated Generation of Hourly Design Sequences (RP-962)
D. Schmitt, Sanford A. Klein, Ph.D., Fellow, and Douglas T. Reindl, Ph.D., P.E., Member, University of
Wisconsin -Madison, Madison, WI
PLANNED
Minneapolis, June 2000
1. Symposium
International Experience with Weather Data for Simulation and Design
Dru Crawley drury.crawley@ee.doe.gov (co-sponsor TC 4.7)
Orlando, January 2001
1. Symposium
Which Weather Data Should You Use for Hygrothermal Calculations?
Achilles Karagiozis karagiozisan@ornl.gov.
Cincinnati, June 2001
Nothing planned to date
15