The Role of Air Pollution Data in West Coast Firestorm

An earlier version of this article originally appeared on the Asthma Allergies Children website. By Liz Muller As I write this white ash is visible in the polluted San Francisco Bay Area air, wafting down from a smoky orange sky and into our lungs, a dangerous byproduct of wildfires burning more than 3 million acres […]

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Fort McMurray Fires

On May 1, 2016, a fire began southwest of Fort McMurray,  Canada. It swept through the community destroying over 2000 structures. You can read about the latest developments here. Since 2014 Berkeley Earth has been expanding its real time database of air pollution. Our original focus was on China, but we have continued to add other regions of […]

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Air Pollution and Cigarette Equivalence

by Richard A. Muller and Elizabeth A. Muller For many people, comparing air pollution to cigarette smoking is more vivid and meaningful than is citing the numbers of yearly deaths. When we published our scientific paper on air pollution in China in August 20151, we were surprised by the attention we got for a quick […]

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3 Packs a day: Killer Air in Shenyang

Earlier this month the Shenyang EPA reported the worse levels of air pollution since record keeping began: Estimates varied between 1000 and 1400 micrograms per cubic meter of PM2.5— the fine particulate matter that has deadly health consequences. The US embassy in Shenyang reported “off the chart” recordings. In our recent study in PLOS on […]

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Berkeley Earth Temperature Update

Over the past few days we have been publishing the first major update of our data since early 2015. The data can be found here on our data page. Given the time of year and the wide ranging discussion about whether or not 2014 was a record year, it seemed a good time to asses […]

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Killer Air: Comparing models and data

As the AP  reports  Lelieveld has published a paper in Nature  on the mortality associated with outdoor air pollution that  confirms what BerkeleyEarth found in its study of air pollution in China. By their estimate   ~1.357M deaths in China are caused by air pollution. By our estimate there are ~1.6 Million deaths per year in China […]

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PM2.5: A Tale of Two Days

In our study of air pollution in China, we stumbled upon two extraordinary days.  The first, which we initially thought was a fluke, turned out to be a single day when air pollution across China was more extensive than we had seen in a years worth of data.  It was a mystery until  lead scientist, […]

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Whither the pause? NOAA report shows no recent slowdown in warming

Mountains of ink have been spilled in recent years on whether or not global warming has paused or slowed down. We’ve discussed it extensively in the past, and numerous studies have examined whether the apparent pause might have been caused by additional ocean heat uptake, small volcanoes, a weak solar cycle, poor arctic coverage in existing datasets, and\or a […]

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Understanding Adjustments to
Temperature Data

There has been much discussion of temperature adjustment of late in both climate blogs and in the media, but not much background on what specific adjustments are being made, why they are being made, and what effects they have. Adjustments have a big effect on temperature trends in the U.S., and a modest effect on […]

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