Lakes Environmental Newsletter
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Monthly Newsletter - February 2021 Edition

3 Safer Alternatives for Your Online Communications

The Facebook-owned messaging app Whatsapp has recently caused a stir due to an upcoming update to their terms of use which removes the option for Whatsapp users to opt out of their data being shared with Facebook. If you're a Whatsapp user looking for a platform that won't access, share, or sell your data, read on to discover the best option to fit your needs.

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Looking for a free messaging app for friends and personal communications?

We recommend Signal.

Signal is a messaging app that recently surged in popularity when it was endorsed by Tesla CEO Elon Musk. What immediately sets Signal apart from Whatsapp and other messaging apps like Telegram and Viber, is that unlike these messaging apps backed by major corporations, Signal is a non-profit foundation funded by donations.

Looking for an Internet browser that won't track you or your data?

We recommend DuckDuckGo.

In terms of functionality, DuckDuckGo is a search engine much like Google, Microsoft Edge, and Safari. Looking for something on the internet? DuckDuckGo will be able to find it for you. What makes it different from the major search engines is that DuckDuckGo doesn't track your search history.

Looking for an end-to-end encrypted collaboration platform for business?

We recommend Tauria.

When it comes to a complete and fully secure work collaboration experience, then Tauria is an app that you should definitely consider. Unlike Slack, Microsoft Teams, Google, Zoom, or other similar collaboration apps, Tauria offers a true end-to-end encrypted collaboration platform and features Video Conferencing, Webinars, Messaging, File Storage, and Scheduling functionalities tailored specifically to meet the secure collaboration needs of businesses.

Learn more about Tauria here and try it for free now!

Online AERMOD Course with CASANZ – Feb 23-26, 2021 - Registration Filling Fast!

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Together with the Clean Air Society of Australia & New Zealand (CASANZ), we will hold an online AERMOD air dispersion modeling course. Training will take place in four, 4-hour webinars from February 23 to 26, 2021 from 11:00am to 3:00pm (Australian Eastern Daylight Time) daily.

Register today!

Note: The above course will be based specifically on regulations for the Australia/New Zealand region.


AERMOD (Feb 23-26, 2021)



Online AERMOD Course – Mar 23-24, 2021

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Our February online AERMOD course sold out fast! Don’t miss out on our next 2-day online AERMOD course taking place on March 23 and 24, 2021 from 8:30am to 5:00pm (Central Time).

Register and pay today before space is gone!

Note: Due to the immense popularity of our online courses and small class sizes, we recommend registering and making payment as soon as possible.


AERMOD (Mar 23-24, 2021)



Online CALPUFF Course - March 30-31, 2021

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Our team will present 2 days of online CALPUFF training from March 30 to 31, 2021. The same great course, now from the convenience of your home or office!

Space is limited. Register early!


CALPUFF (Mar 30-31, 2021)




2021 Course Schedule

Online AERMOD - with CASANZ
February 23-26, 2021
Register →

March 23-24, 2021
Register →

March 30-31, 2021
Register →

May 4-5, 2021
Register →

May 18-19, 2021
Register →


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Importing Gas & Particle Data to AERMOD View

In addition to calculating air concentrations of pollutants, the AERMOD air dispersion model can calculate deposition fluxes from both particulate and gaseous emissions. When these routines are enabled, deposition parameters must be input to the model.

In Lakes Environmental’s AERMOD View application, these parameters are input via the Source Pathway’s Gas & Particle Data settings.

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Sample Gas & Particle Data Inputs in AERMOD View

While parameters can be input by hand for each source, projects with many sources may be better served to have the data imported. This process can be accomplished by importing a simple Excel spreadsheet.

Included with AERMOD View are several template spreadsheets for importing project data. These are loaded into the C:\Lakes\AERMOD View\Templates folder. For deposition data, the Source-Gas-Particle.xls sheet can be used. The spreadsheet consists of several different input columns:

  • Type: Define the depositional routine to be modeled.
    • PARTM1: Method 1 particle deposition, a regulatory default option
    • PARTM2: Method 2 particle deposition, a non-default option designed for fine particulate emissions
    • GAS: Gaseous deposition
  • Source ID: Set the unique Source ID for the specified parameters. This value is repeated for as many rows as are needed to define the required deposition inputs.
  • Particle Diameter: For Method 1 or Method 2 deposition, set the maximum diameter for each particle class size.
  • Mass Fraction: Define the mass fraction of the specified diameter category. This value must be between 0 and 1 with the cumulative mass fraction summing to 0.98-1.02 (100% +/- 2%).
  • Particle Density: For Method 1 only, the density (g/cm3) of the diameter category.
  • Diffusivity Air / Diffusivity Water / Cuticular Resistance / Henry’s Law: Gaseous deposition parameters required by the model.

The sample image below shows Method 1 particle deposition inputs for 2 separate sources.

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Lakes Environmental’s Gas & Particle Data Spreadsheet Template

Once the spreadsheet is complete, it can be imported into AERMOD View using the Import icon on the Source Pathway Gas & Particle Data settings.

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NASA Satellites Help Quantify Forests’ Impacts on Global Carbon Budget

February 3, 2021 - New methodology creates the first consistent global framework for estimating the carbon flux specifically for forests.

Read more →

COVID-19 Lockdowns Temporarily Raised Global Temperatures

February 3, 2021- The lockdowns and reduced societal activity related to the COVID-19 pandemic affected emissions of pollutants in ways that slightly warmed the planet for several months last year, according to a new study by the National Center for Atmospheric Research (NCAR).

Read more →

Additional Environmental News

Visit the Environmental News Network (ENN), the most dependable online environmental news source!



2021 Conference Schedule

DMUG 2021
February 24, 2021 | Virtual Event

Learn more →

Air & Waste Management Association’s 114th Annual Conference & Exhibition
June 14-17, 2021 | Virtual Event

Learn more →


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