Author: CMOS Bulletin SCMO

Banner Image for Gilbert's article on the origins of PM2.5 into Quebec shows a sunset skyline with smokestacks

Using Back-Trajectories to Trace the Origins of Fine Particulate Matter (PM2.5)

– By Jean-Philippe Gilbert, Richard Leduc, and Nathalie Barrette, Geography Department, University of Laval

Air pollution in the province of Québec, Canada is monitored daily to allow for a rapid response to public health issues. However, there are few studies concerning the long-distance trend of pollutants, and those studies that do exist focus on a small area of study. The objective of this paper is to determine the sources of certain pollutants coming in to Québec,

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Ice: Nature and Culture

– Review by Bob Jones, CMOS Archivist –

By Klaus Dodds, Published by Reaktion Books, distributed by University of Chicago Press, Paperback, 229 pages, ISBN-13: 978-1-78023-905-7, $ 24.95 (USD)

Ice is not a science textbook about ice, nor is it a manual of Ice Forecasting (the reviewer will know as he was an Ice Forecaster with the Meteorological Service of Canada in a former life). Rather it is a wide-ranging exploration of the cultural, natural and geopolitical history of ice.

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Microscopic image of different kinds of pollen. Some are small and round, others are larger and with spikes.

Pollen, Chemistry and Clouds

– By Ellen Gute, Abbatt Research Group, University of Toronto –

Clouds are a crucial part of our Earth’s atmosphere as they redistribute water resources and contribute to the atmosphere’s radiative forcing (Pruppacher and Klett 1997; Lohmann 2006). Ice is present in many clouds and is known to play a central role in precipitation formation. Despite the important role in climate, processes associated with clouds represent some of the largest uncertainties in climate models

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Image shows a red and white wind sock against a cloudy sky. Photo for the Wind at Lake Saint Charles article by Richard Leduc

Comparison of wind forecasts and observations at Lake Saint-Charles, Quebec

– By Richard Leduc and Maude Chartrand, Geography Department, Université Laval

Lake Saint-Charles is the main source of drinking water for nearly 300,000 citizens of Quebec City’s and other municipalities. For several years obvious signs of accelerated aging of the water body were noticed, one of the symptoms of which is the appearance and recurrence (since 2006) of episodes of potentially toxic cyanobacterial water blooms.

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Banner image for The Lunar Atmosphere article by Paul Godin and all. Image shows a moon setting on the ocean, black and white image.

The Lunar Atmosphere: a surface-bounded exosphere that builds a record of delivery of water to the Earth’s oceans

– By Paul Godin, Jacob Kloos, Tue Giang Nguyen, Jasmeer Sangha, and John Moores, Department of Earth and Space Science and Engineering, York University

The moon has been and still is an area of great interest in the field of planetary sciences. Because its atmosphere is extremely thin (typically, you will find no more than one million molecules per cubic centimeter,

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The Passing of Morley Thomas 1918-2018

– By David Phillips, Climatologist and Author –

Morley Thomas, affectionately known as Canada’s Mr. Climatology, died on March 31, 2018 in Watford, ON a few weeks after a fall and successful surgery on a broken hip. International meteorology lost a leader and skillful diplomat; Canadian meteorology lost a staunch and vigorous supporter over 65 years; and I lost a dear friend and remarkably generous mentor.

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