Happy Holidays from Lakes Environmental! |
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Our entire staff would like to thank you, our clients, and subscribers, for a successful 2023. Best wishes to you for a wonderful holiday season and a happy and healthy New Year. It’s because of you that we love doing what we do! We look forward to working with you in 2024!
December 25 |
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December 26 |
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January 1 |
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If you have an urgent matter requiring assistance during the holidays, please e-mail us at support@webLakes.com and we will respond to your inquiry during regular business hours.
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Online CALPUFF Training Course – Jan 23-24, 2024 - Only 2 Spots Left! |
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Our 2-day online CALPUFF course taking place on January 23 and 24, 2024 from 8:30am to 5:00pm (Central Time – Chicago, USA) is just about full.
Dont miss out! Register today!
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Online AERMOD Training Course – Mar 19-20, 2024 |
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Space is filling quickly for our 2-day online AERMOD course taking place on March 19 and 20, 2024 from 8:30am to 5:00pm (Central Time – Chicago, USA).
Register Now!
Note: Due to the immense popularity of our online courses and small class sizes, we recommend registering and making payment as soon as possible.
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UPCOMING TRAINING COURSES |
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MODELING TIP |
Import Elevations From AERMAP |
AERMAP is the terrain preprocessor for the AERMOD modeling system and provides data to AERMOD necessary for dispersion calculations in complex terrain. AERMAP reads digital terrain files, interpolates elevations for most model objects, and calculates hill-height scaling factor for receptors in an air dispersion study conducted using AERMOD.
AERMOD View users have benefitted from the application’s Terrain Processor which is an easy-to-use graphical tool built into the application for setting up and executing AERMAP. It includes the popular WebGIS feature which allows modelers to download high-resolution worldwide terrain data for free.
Another feature within AERMOD View’s Terrain Processor is the Import Elevations utility which gives users control over how elevations from an existing AERMAP run are imported. The utility appears automatically at the end of every successful AERMAP run within AERMOD View, but it can also be accessed directly from the Terrain Processor. This provides modelers the ability to re-import elevations without needing to re-run AERMAP.

The Import Elevations utility also gives users control over which elevations are imported. A facility may already have a detailed plot plan that includes accurate elevation values for sources and buildings, so a modeler may want to input these values manually instead of relying on AERMAP’s calculations. Using Import Elevations, the user can easily uncheck any objects that they don’t want to import.
See Section 4 of the U.S EPA’s AERMOD Implementation Guide for guidance and additional information on importing elevations in AERMOD projects.
With the AERMOD 23132 release published by the U.S. EPA in October 2023, AERMOD can now apply elevated terrain algorithms to the RLINE & RLINEXT mobile source types. While this does not preclude application of existing model guidance on the use of the non-default FLAT terrain option (e.g., modeling project level conformity and hot-spot analyses), AERMOD View Version 12.0 adds these source types to the Import Elevations process.

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ENVIRONMENTAL NEWS ARTICLES |
National Policy Aimed At Reducing U.S. Greenhouse Gases Also Would Improve Water Quality |
December 13, 2023 - A climate policy that raises the price of carbon-intensive products across the entire U.S. economy would yield a side benefit of reducing nitrate groundwater contamination throughout the Mississippi River Basin.
Read more → |
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Warmest Arctic Summer on Record is Evidence of Accelerating Climate Change |
December 14, 2023 - NOAA’s 2023 Arctic Report Card documents new records showing that human-caused warming of the air, ocean and land is affecting people, ecosystems and communities across the Arctic region, which is heating up faster than any other part of the world.
Read more → |
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UPCOMING CONFERENCES |
2023 Conference Schedule |
TCEQ Environmental Trade Fair and Conference (ETFC)
May 14-15, 2024 | Austin, TX | Booth # 1313
Learn more →
Air & Waste Management Association’s 117th Annual Conference & Exhibition
June 24-27, 2024 | Calgary, AB | Booth # 201
Learn more →
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LAKES SOFTWARE GROUP OF COMPANIES
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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.
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