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        Environmental Software

Lakes Environmental Newsletter

Monthly Newsletter - June 2012


Lakes Environmental e-Newsletter

Emissions Inventory - Atmospheric Science - IT Solutions


In this issue:

  • News & Events
  • Upcoming Courses
  • Modeling Tip: Combining CALPUFF Model Output with CALSUM
  • Articles
  • Upcoming Conferences & Trade Shows

News & Events

AERSCREEN View Version 1.1 Released!

Lakes Environmental is pleased to announce the release of AERSCREEN View, a user-friendly interface for the US EPA AERSCREEN model, which is a single source screening level air quality model for AERMOD.

AERSCREEN View contains a wealth of exciting features including:

  • Easy creation and management of multiple scenarios with the intuitive Scenario Wizard
  • Advanced output viewer with fully-customizable output graphs
  • Automatic download of terrain data for estimating impacts in complex terrain
  • Full support for all US EPA AERSCREEN model options

The AERSCREEN View interface has a very similar look and feel to our popular AERMOD View software, making it easier than ever to get up and running!

Take advantage of our introductory pricing of US$399.00 by ordering your copy today! If you have any questions please contact our sales team.

Featuring: AERMOD-Ready Station Met Data (USA)

Lakes Environmental now offers AERMOD-ready meteorological station data for locations in the United States. Follow the simple steps below to see how easy it is to order!

1. Specify lat/long of modeling site

2. Select the surface met station

3. Select the upper air met station

4. Submit info and receive a quote

5. Approve quote and send payment

6. Receive AERMOD-ready met files
(SFC and PFL)

Ordering AERMOD-Ready Station Data is Easy!

AERMOD Course in Toronto, Ontario – Sep 10-11, 2012

Lakes Environmental will be holding a 2-day AERMOD course in Toronto from September 10 to 11, 2012. Register today to take advantage of our early registration discount!

Please contact us at or check the Upcoming Courses section on our website for further information.

AERMOD Course in Mexico City – Sep 27-28, 2012

Lakes Environmental is pleased to be travelling to Mexico for two days of AERMOD training in Mexico City from September 27-28, 2012.

This course will be hosted by our Mexican distributor, Modelos Ambientales. Presentation of the course will be in English with simultaneous translation into Spanish while all course materials (presentation slides, course notes, etc) will be in English only.

Register Early!

Registration Closes: August 28, 2012

AERMOD & CALPUFF Course – São Paulo, Brazil – Nov 5-9, 2012 - Location Announced!

Lakes Environmental has recently announced this year’s AERMOD and CALPUFF course location in Brazil. Training will be taking place at the Blue Tree Towers Paulista in São Paulo from November 5 to 9, 2012. For more information regarding this exciting course, please contact our local distributor, Silvio de Oliveira of SECA.

Further details including course outline and registration form can be found on our website.

Register Early!

Registration Closes: October 4, 2012

Lakes Environmental at A&WMA 2012 Conference & Exhibition

Lakes Environmental would like to thank everyone who stopped by our booth in San Antonio at A&WMA’s 105th Annual Conference and Exhibition from June 19 to 22.


We trust that you enjoyed your time at this year’s conference and look forward to assisting you in your endeavors through the coming year. See you in 2013 at A&WMA’s conference in Chicago, Illinois!

Those who visited our booth had the chance to participate in a draw for a complimentary copy of our AERSCREEN View, AERMOD View, or CALPUFF View software packages.

We would like to take this opportunity to offer our congratulations to our software winners.

Congratulations to our Software Winners!

Juan Alvaro Gil Donato of West Texas A & M University

Dr. Jimmy Fung of The Hong Kong University of Science and Technology

Elizabeth Hendrick of Epsilon Associates, Inc.

Pat Patrick of Enercon Services, Inc.

Lakes Environmental Closed in Observance of Canada Day

Lakes Environmental will be closed on Monday, July 2, 2012 to observe the Canada Day holiday. If you have any needs during that time, please e-mail us at and we will contact you on Tuesday, July 3, 2012 when our offices reopen.

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Upcoming Courses





Jul 19-20, 2012


Lima, Peru

Register Now

Sep 10-11, 2012


Toronto, ON

Register Now

Sep 27-28, 2012


Mexico City, Mexico

Register Now

Oct 15-16, 2012
Oct 17-18, 2012


London, UK

Register Now

Oct 22-23, 2012


Orlando, FL

Register Now

Nov 5-6, 2012
Nov 7-9, 2012


São Paulo, Brazil

Register Now

Dec 3-4, 2012
Dec 5-6, 2012



Register Now

* 2-day Introductory CALPUFF Course

For more information on the above courses, including registration information, location, and course outlines, please visit our web site:

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Modeling Tip

Combining CALPUFF Model Output with CALSUM

CALPUFF model runs can take an extremely long time to complete, but there may be times when sources have been divided into multiple runs. In order to estimate the total impact of all sources, the CALSUM utility can be used to create a single data file which contains the cumulative impacts. CALSUM can support the following output data types:

  • CONC.DAT (concentration)
  • DFLX.DAT (dry deposition fluxes)
  • WFLX.DAT (wet deposition fluxes)

The latest release of CALPUFF View™ includes the CALSUM Wizard which steps users through the process of running CALSUM.

Note that CALSUM can only be used if:

  1. The output files are of the same type (containing either concentrations, wet deposition fluxes, or dry deposition fluxes)
  2. The time periods contained in the files are identical
  3. The species are the same and in the same order
  4. The receptors (e.g., sampling, discrete, etc.) are the same, in terms of number, location, and order

Once that information has been verified, follow these steps to run the CALSUM Wizard:

  1. Begin by exporting the sources from each project whose output will be combined. Use the Export | Sources menu option to save the sources to an Excel spreadsheet.

  2. Create a new project to store the combined results. Since the parameters from each run must be the identical, select the Save Project As option with one of your CALPUFF View projects open.

  3. Select the Import | Sources menu option and import the Excel spreadsheets you exported in Step 1. Your new project will now contain all of the sources whose output will be combined in CALSUM.

  4. Select Tools | CALSUM Wizard. On the first step, provide an optional title for the run. The input, list, and output files will be automatically created, but you can change the names of any files as desired. Click the Next button when ready.

  5. Verify the Species list. Recall that the species must be the same and in the same order for all projects to be combined. You can import a Species List using the Import button ( ). Click Next to proceed.

  6. You have to specify which output files will be combined in the Data Files and Scaling Options. Select the Add File button to identify each output file.

    The concentrations or deposition fluxes in each file may be scaled by using a linear operator of the form (Ax+B) where:

    x represents either the concentration or deposition flux
    A is the multiplicative constant (A-scale)
    B is the additive constant

    For example, you can use the B-Scale to add a constant background concentration to the model results. Enable the Scaling Factor checkbox for any specified output file to add scaling factors.

  7. After specifying all of the CALSUM parameters, press the button to run CALSUM. Click OK to close the CALSUM Wizard when the run is complete.

  8. Verify your CALPOST model options. When the options are set, select Run | CALPOST Model to process the combined concentrations or deposition fluxes.


Submit Your Modeling Tip Today!

We are currently accepting submissions for the Monthly Modeling Tip section that appears in our newsletters. If you have a modeling tip that may benefit our readers, please send it to us at Your name and the name of your organization will appear below the tip providing you with an opportunity for increased exposure.

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EPA Updates Clean Air Act Standards for Flares and Process Heaters at Petroleum Refineries

Washington- June 1, 2012 - The U.S. Environmental Protection Agency (EPA) is issuing common-sense standards informed by important input from stakeholders, including industry, for new flares and process heaters at petroleum refineries which maintain important public health benefits while dramatically reducing costs. This final rule, which responds to petitions requesting the agency to reconsider standards issued in 2008, provides industry with greater compliance flexibility than those earlier standards did and ensures that companies can make routine operational changes without triggering new requirements. These updates will reduce emissions of sulfur dioxide, nitrogen oxides, and volatile organic compounds, which can cause respiratory illnesses, heart attacks and premature deaths, while saving the refining industry approximately $80 million per year. These reductions will also provide up to $610 million in annual health benefits.

Read Full Article Here

Higher EU Greenhouse Gas Emissions in 2010 Due to Economic Recovery and Cold Winter

May 30, 2012 - Greenhouse gas emissions increased in 2010, as a result of both economic recovery in many countries after the 2009 recession and a colder winter. Nonetheless, emissions growth was somewhat contained by continued strong growth in renewable energy sources. These figures from the greenhouse gas inventory published by the European Environment Agency (EEA) today confirm earlier EEA estimates.

Greenhouse gas (GHG) emissions of the 27 Member States of the European Union (EU-27) increased by 2.4 % (or 111 million tonnes CO2 equivalent) between 2009 and 2010. This can be partially explained by the fact that there was a sharp 7.3% (or -365 million tonnes) decrease of emissions between 2008 and 2009.

Read Full Article Here

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Upcoming Conferences & Trade Shows




Jul 12-13, 2012

4th International Conference on Climate Change
More Info

Seattle, WA, USA

Aug 20-23, 2012

Power Plant Air Pollutant Control "MEGA" Symposium
More Info

Baltimore, MD, USA

Aug 13- 16, 2012

2012 Annual International Emission Inventory Conference
More Info

Tampa, FL, USA

Sep 21-23, 2012

1st International Conference of Chemical, Environment & Energy
More Info

Kuala Lumpur, Malaysia

Oct 30-31, 2012

Carbon Forum Asia
More Info

Bangkok, Thailand

Nov 11-15, 2012

SETAC North America 33rd Annual Meeting
More Info

Long Beach, CA, USA

Nov 27-30, 2012

Pollutec Horizons 2012
More Info

Lyon, France

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About this Newsletter

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:  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:

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