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Volume 8 - Issue 10 |
Monthly Newsletter
- October 2007 |
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News & Events
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Knowledgebase is Complete!
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The Lakes Environmental Knowlegebase has gotten bigger! We’ve added new articles for AERMOD View™ and
new sections for EcoRisk View™, CALRoads View™, SLAB View™, and WRPLOT View™. With the addition of these
sections, the Knowledgebase covers all of our products; if you have suggestions for new articles for any of
the products, please let us know! We want to make this a first-class resource for our users in current
maintenance, and appreciate your help.
Look for the Login to the Knowledgebase on our website.
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Lakes Environmental Offers Successful CALPUFF Course in Brazil
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Lakes Environmental would like to thank all of the participants of the 3-day CALPUFF training course in
São Paulo, Brazil. Because of the success of the course, Lakes Environmental will return to São Paulo in
the week of March 10th, 2008 for additional training courses for AERMOD and CALPUFF.
Anyone interested in joining the waiting list for the AERMOD
course (March 10-11) and/or the CALPUFF course (March 12-14)
should contact our distributor in Brazil, Mr. Silvio de Oliveira,
to sign up for the course.
Course Outlines and Registrations will be available soon. Contact
details for Mr. Silvio de Oliveira are available at
https://www.weblakes.com/lakedist.html.
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Lakes Environmental at the AWMA West Coast Section’s Conference in California
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Dr. Jesse Thé will attend the Air & Waste Management Association - West
Coast Section Annual Conference, Integration of Future Energy Demand
with California Global Warming Solutions Act. The conference
takes place on October 18th and 19th in Glendale, CA. More information about
the conference is available on the AWMA-WCS website: https://www.eagle-pacific.com/awma-wcs/
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Dr. Jesse Thé Speaks to the AWMA Golden Empire Chapter
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While Dr. Thé is in California, he will also speak in Bakersfield, CA, on
October 18th at the October Dinner Meeting of the AWMA -
Golden Empire Chapter. Dr. Jesse Thé will give an overview of the AERMOD model and its applications
for development and
permitting in California. More information about the dinner
meeting, including the location, is available on the AWMA-GEC
website: https://www.awma-goldenempire.org/
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Coming Soon! A Lakes Environmental Technical Support Survey
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Lakes Environmental wants to know how we can provide the best support to our in-maintenance users.
This fall, look for the survey, and a chance to win an Apple® iPod® Nano.
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Upcoming Courses
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We’ve set a number of training
dates for 2007, with additional courses for 2008 to be announced soon!
Be sure to register for courses 30 days in advance to receive
a 10% discount (where applicable).
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AERMOD Courses
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Oct 25-26, 2007 Just a few places left - Register now! |
Phoenix, AZ |
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Nov 29-30, 2007 |
Tampa, FL |
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For more information on the above courses, such as registration
information, location, and course outlines, please visit our
web site: https://www.weblakes.com/courses.html.
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Monthly Modeling Tip
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Randomizing Wind Directions in AERMET
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The U.S. National Weather Service (NWS) stations record wind directions to the nearest 10°. For air dispersion
modeling studies using the U.S. EPA AERMOD model, the randomization of wind directions can be accomplished when
pre-processing the meteorological data using AERMET.
The randomize option in AERMET is selected by placing the parameter RANDOM after the WIND_DIR keyword in the
AERMET Stage 3 input file as shown below:
METHOD WIND_DIR RANDOM
Not placing a parameter after WIND_DIR or using the parameter NORAND, instructs AERMET not to randomize the
wind directions.
METHOD WIND_DIR NORAND
What Does The Randomization Do?
The randomize procedure adds a single digit random number to each wind direction, and then subtracts 4°
from the modified wind direction. This has the effect of randomizing the wind direction within a -4° to +5°
window. For example, a wind direction of 270° would be randomized to a value anywhere between 266° and 275°.
A separate random number is predefined for each hour of the year; this array of numbers is static and is the
EPA standard set of random numbers used to randomize wind directions.
Why Should You Randomize the Wind Directions?
NWS wind directions should be randomized because they are reported to the nearest 10° only. If the wind
directions are not randomized, there will only be 36 distinct wind directions. It is probable that this will
lead to an unrealistic distribution of concentrations in the AERMOD results.
On-Site Data
It should be noted that the RANDOM parameter has no effect when on-site data is available for a particular
hour. AERMET assumes that all on-site wind directions are specified to the nearest degree and do not need
randomizing.
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Remember: We are currently accepting
submissions for the Monthly Modeling Tip which appears in
our newsletters. If
you have a modeling tip that may benefit a variety of people,
please send it to us at support@weblakes.com.
Your name and the name of your organization will appear below
the tip providing you with greater exposure.
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This Month's Articles
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As Arctic Ice Melts, U.S.
Moves To OK Sea Treaty
October 4, 2007 - WASHINGTON -- The White House is pushing the Senate to ratify a
long-spurned high seas treaty that has gained new relevance with the melting of the polar ice cap and
anticipated competition for the oil that lies below.
Read Article
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Another Warm Winter Seen For Much Of U.S.
October 4, 2007 - NEW YORK (Reuters) -- Long-range weather forecasts are predicting
a warmer than average winter with less precipitation for much of the United States except the Pacific
Northwest.
"It will be a lot like last year but the climate models are even more in agreement
now than they were last fall," said Mike Halpert, head of forecast operations at the National Oceanic
and Atmospheric Administration's Climate Prediction Center.
Read Article
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EPA Urged to Limit CO2 Pollution from Cargo and Cruise Ships
October 3, 2007 - Washington, D.C., -- A US supreme court decision has cleared the
way for the Environmental Protection AGency to order shipping companies to lower the pollution caused
by ships.
Today a coalition of environmental advocates filed a petition today with the U.S. Environmental Protection
Agency (EPA), asking the agency to set pollution rules for large, ocean-going marine vessels. These
vessels include cargo and cruise ships. Earthjustice, the leading U.S. public interest environmental law
firm, filed this first ever petition on behalf of Oceana, Friends of the Earth and the Center for
Biological Diversity.
Read Article
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Despite Warming, Ships to Shun Northwest Passage
October 3, 2007 - OTTAWA - While there has been much talk that Arctic trade routes will
open up as northern ice melts, shipping companies and experts say using the fabled Northwest Passage
through Canada's Arctic archipelago would be too difficult, too dangerous and totally impractical.
In theory, the idea is tempting -- the passage cuts the distance between Europe and the Far East to
just 7,900 nautical miles, from 12,600 nautical miles through the Panama Canal.
Read Article
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EPA: Climate bills Dependent on Global Effort
October 2, 2007 - WASHINGTON - Three competing Senate proposals calling for limits on
greenhouse gases would have roughly identical success in curbing global warming, but only if other nations
also significantly cut heat-trapping emissions, a government analysis says.
The Environmental Protection Agency examined the long-term impact of three climate change bills being
considered in the Senate, each of which would cap carbon dioxide emissions from cars, industry and power
plants with an goal of reducing greenhouse gas releases by 60 to 65 percent by mid-century.
Read Article
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Building a Canadian Environmental Superpower
October 1, 2007 OTTAWA, OCTOBER 1, 2007 (GLOBE-Net) – An important step forward was
taken this week with respect to achieving a national consensus on climate change with the release of a
report by the Task Force on Environmental Leadership of the Canadian Council of Chief Executives (CCCE).
The 33-member group of leading CEO’s called for aggressive global action to address the challenge of
climate change, stating that Canada has the skills and the resources to become a leader in slowing,
stopping and reversing the growth of greenhouse gas emissions.
Read Article
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Conferences & Trade Shows
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Here are a few conferences and trade shows coming
up in the next few months: |
October 14-18, 2007 |
17th Annual Conference of the International Society for Exposure Analysis
more info |
Durham, NC, USA |
October 18-19, 2007 |
AWMA West Coast Section Annual Conference
more info |
Glendale, CA, USA |
October 18-21, 2007 |
ENERGY 2007
more info |
Athens, Greece |
October 27-30, 2007 |
Eco Expo Asia
more info |
Hong Kong |
October 30, 2007 |
The Business of Climate Change Conference
more info |
Ottawa ON, Canada |
November 9, 2007 |
Environmental Markets Association: 11th Annual Fall Conference
more info |
San Diego, CA, USA |
November 15, 2007 |
Environmental Compliance Conference 2007
more info |
Toronto, ON Canada |
December 10-11, 2007 |
Global Sustainable Financial Products Summit
more info |
London, UK |
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About This Newsletter
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This newsletter contains information gleaned from various sources on
the web, with complete links to the sources cited. Organizations cited are in no way affiliated with Lakes
Environmental Software.
Lakes Environmental Software is a leading environmental IT company that offers a complete line of air
dispersion modeling, risk assessment, emissions inventory, and emergency release software as well as
training and custom software services. With satisfied users located around the globe, Lakes Environmental
Software will continue to revolutionize the environmental software field.
For more information please visit our web site at: www.weblakes.com. You
may also contact us by phone at (519) 746-5995 or by fax at
(519) 746-0793.
All comments and suggestions are welcome. You can e-mail us
at: support@weblakes.com |
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