Lakes Environmental e-Newsletter

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Upcoming Courses

Date	Course	Location	Registration
Jul 19-20, 2012	AERMOD	Lima, Peru	Register Now
Sep 10-11, 2012	AERMOD	Toronto, ON	Register Now
Sep 27-28, 2012	AERMOD	Mexico City, Mexico	Register Now
Oct 15-16, 2012 Oct 17-18, 2012	AERMOD CALPUFF *	London, UK	Register Now
Oct 22-23, 2012	AERMOD	Orlando, FL	Register Now
Nov 5-6, 2012 Nov 7-9, 2012	AERMOD CALPUFF	São Paulo, Brazil	Register Now
Dec 3-4, 2012 Dec 5-6, 2012	AERMOD CALPUFF *	Singapore	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: https://www.weblakes.com/courses.html.

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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 support@webLakes.com. 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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Articles

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

Date	Conference	Location
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: 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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