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        Air Pollution Dog Blog — wildfire smoke

        What is the Difference in Particulate Matter PM2.5 and PM10?

        What is the difference between pm2.5 and pm10?

        What is Particulate Matter?

        Airborne particulate matter (PM) is not a single pollutant, but rather is a mixture of many chemical species. It is a complex mixture of solids and aerosols composed of small droplets of liquid, dry solid fragments, and solid cores with liquid coatings. Particles vary widely in size, shape and chemical composition, and may contain inorganic ions, metallic compounds, elemental carbon, organic compounds, and compounds from the earth’s crust. Particles are defined by their diameter for air quality regulatory purposes. Those with a diameter of 10 microns or less (PM10) are inhalable into the lungs and can induce adverse health effects. Fine particulate matter is defined as particles that are 2.5 microns or less in diameter (PM2.5). Therefore, PM2.5 comprises a portion of PM10.

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        2021 Drought Conditions Could Make California Wildfires Worse This Year

        2021 Drought Conditions Could Make California Wildfires Worse This Year
        Severe drought in the West and Southwest regions of the United States have residents worried about the potentially destructive fire season. Already, wildfires have burned around 14,000 acres in California in 2021, which is more than five times the acreage charred by the same time last year.

        It's a worrying trend that has fire officials taking a proactive approach -- from more funding to wildfire prevention to hiring additional crews -- after the state saw its worst fire season ever in 2020.

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        2021 California Wildfire Season Looks Extreme and Dangerous

        2021 California Wildfire Season Looks Extreme and Dangerous

        In California, raging wildfires seem to appear like clockwork every summer and fall, damaging property, claiming people's lives, and polluting the air we breathe. What was once traditionally the “wet season” is no longer immune from bouts of dangerous fire weather. California’s wildfire season is expanding, and weather changing climate is a leading cause.

        Wildfire Season in California 2021

        This week's unusually early Red Flag Warning is just a sign of things to come, according to California's top emergency and fire officials, who gathered for an event in the East Bay to kick of Wildfire Preparedness Week. With dry warm winds swirling above, California's top fire officials are sending a loud warning, that this upcoming fire season could quickly become the worst on record.

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        Why is California Expecting an Extreme 2021 Wildfire Season?

        Why is California Expecting an Extreme 2021 Wildfire Season?
        As California and the West are falling deeper into drought and, with summer approaching, there is great potential for another severe fire season in 2021.

        As a disappointing wet season comes to a close and hope for spring rain fades, conditions are worse now than they were at this time last year in 2020, with exceptional and extreme drought now found throughout the region.

        In California, that doesn’t bode well, given that last year’s more moderate rainfall deficits, combined with extreme heat waves, ushered in a record-setting fire year. It brought 5 of the 6 largest fires in modern state history, 10,488 destroyed structures and 33 fatalities. Some 4.2 million acres were torched.

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        When Is California Fire Season this Year?

        When Is California Fire Season this Year?

        In the past, the California fire season was mainly from May through October. However, with climate change as a contributing factor, most recent disasters show that the season is beginning earlier and ending later each year, with some experts suggesting that the fire season in California is now year round.

        Here is what you need to know about the history and future of fire season in California:

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