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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. Ozone is harmful to humans at ground-level, causing pulmonary and heart disease. —Guy Brasseur.

Ozone 291
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UN Review of Recent Climate Research Concludes That Impacts Of Climate Change Coming Faster Than Anticipated

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Significant climate anomalies 2008/2009. Source: Climate Change Compendium. Global emissions were growing by 1.1% The developing and least-developed economies, 80% of the world’s population, accounted for 73% of the global growth of emissions in 2004. Click to enlarge. Earlier post.). Earlier post.).

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Climate Expert: Don't Call It Geoengineering

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The leaders of the world have just returned from the UN's latest climate change summit, COP26 , in which the countries that have signed on to the Paris Agreement upped their commitments to fight climate change. C by the year 2100 , according to Climate Action Tracker. C above pre-industrial levels.

Climate 143
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Lancet Series Finds That Cutting Greenhouse Pollutants Will Have Major Direct Health Benefits Worldwide

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The studies use case studies to demonstrate the co-benefits of tackling climate change in four sectors: electricity generation, household energy use, transportation, and food and agriculture. Climate change threatens us all, but its impact will likely be greatest on the poorest communities in every country. —Kirk R.

Pollution 210
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WMO reports GHG concentrations at highest in 800K years

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Globally averaged concentrations of CO 2 reached 403.3 ppm in 2015 because of a combination of human activities and a strong El Niño event. Together, the Greenhouse Gas Bulletin and Emissions Gap Report will provide a base for decision-making at the UN climate change negotiations, which will be held from 7-17 November in Bonn, Germany.

2016 186
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NSF issues solicitation for decadal and regional climate prediction using Earth Systems Models

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This is the second in a series of EaSM solicitations, and it remains focused on the prediction of future climates and their consequences for human systems on time scales of several decades and shorter and global to regional and finer spatial scales. —NSF EaSM solicitation.

Climate 210
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Scientists at Climate Talks Call for New Assessment of Nitrogen and Climate

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A side event organized by the International Nitrogen Initiative (INI) at the COP-15 United Nations Climate Change Conference in Copenhagen will highlight nitrogen’s role in climate change. Earlier post.). Kilaparti Ramakrishna, Senior Advisor on Environmental Law and Conventions at UNEP.

Climate 186