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You are browsing the archive for pollution Archives - AGU Blogosphere.

6 September 2021

Catoca mine in Angola – using satellite imagery to understand recent events

Catoca mine in Angola – using satellite imagery to understand recent events

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8 June 2020

Gold mining with mercury poses health threats for miles downstream

A new study in the Peruvian Amazon shows that the assumption that distance lowers risk from mercury contamination doesn’t hold up.

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21 April 2020

South Asia faces increased double-threat of extreme heat, extreme pollution

Extreme heat occurrences worldwide have increased in recent decades, and at the same time, many cities are facing severe air pollution problems, featuring episodes of high particulate matter pollution. This study provides an integrated assessment of human exposure to rare days of both extreme heat and high PM levels.

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Continued carbon dioxide emissions will impair human cognition

Rising CO2 causes more than a climate crisis—it may directly harm our ability to think.

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2 April 2020

High resolution Planet Labs imagery of the Luming Mine accident

Planet Labs have captured a high resolution SkySat image of the site of the Luming Mine accident in China, in which polluted water and sediment have been released

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15 January 2020

Crowdsourcing pollution data could benefit public health

Low-cost sensors provide localized air quality data By Jerimiah Oetting Wildfire smoke regularly threatens air quality over vast regions of places like California. But a new study finds a network of low-cost sensors placed in private homes could paint a more detailed picture of localized pollution, especially in areas where data on air quality is limited. “[The low cost sensors are] unlikely to replace our reliable regulatory monitoring networks,” said …

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Air Pollution from Oil and Gas Production Sites Visible from Space

Between 2007 and 2019, across much of the United States, nitrogen dioxide pollution levels dropped because of cleaner cars and power plants, the team found, confirming findings reported previously. The clean air trend in satellite data was most obvious in urban areas of California, Washington and Oregon and in the eastern half of the continental United States… However, several areas stuck out with increased emissions of nitrogen dioxide: The Permian, Bakken and Eagle Ford oil and gas basins, in Texas and New Mexico, North Dakota, and Texas, respectively.

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5 November 2019

Satellite tracking shows how ships affect clouds and climate

By matching the movement of ships to the changes in clouds caused by their emissions, researchers have shown how strongly the two are connected.

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3 October 2019

Shape of volcanic ash influences contamination of water sources in volcanically active regions

Contaminants from volcanic eruptions leach into water at different rates depending on the shape of the volcanic ash particles, according to new research that could enhancing scientists’ ability to predict water quality risk in volcanically active regions.

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10 September 2019

Shedding light on the invisible: addressing potential groundwater contamination by plastic microfibers

Until recently, the topic of plastic pollution was relatively unknown to the general public, although the problem was already under everyone’s very eyes. Indeed, plastic pollution has become one of the most debated issues over the last few years, in some cases even overshadowing the concerns about climate change, and with particular concern about the effects of microplastic (i.e. plastic particles smaller than 5 mm in length) in the natural environment.

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26 August 2019

Ship emissions responsible for thousands of premature deaths in China’s Pearl River Delta

Ship emissions caused more than 1,200 ozone-related and 2,500 particulate-related premature deaths in the Pearl River Delta region in 2015, according to new research in the AGU journal GeoHealth. The new study also predicts that implementing new coastal emission controls could reduce mortality due to fine particulates by 30 percent and ozone by 10 percent by 2030.

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31 July 2019

Decades-old pollutants melting out of Himalayan glaciers

New research in AGU’s Journal of Geophysical Research: Atmospheres finds chemicals used in pesticides that have been accumulating in glaciers and ice sheets around the world since the 1940s are being released as Himalayan glaciers melt as a result of climate change.

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14 June 2019

Monitoring a mystery bird in Yakutat

Arctic terns and Aleutian terns gather together on ocean spits to scratch out nest cups. Each is a graceful creature that distinguishes itself from a gull by the incessant slicing of its sharp wings through the air.

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15 May 2019

Study: U.S. methane emissions flat since 2006 despite increased oil and gas activity

Natural gas production in the United States has increased 46 percent since 2006, but there has been no significant increase of total US methane emissions and only a modest increase from oil and gas activity, according to a new NOAA study.

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22 April 2019

Microbes hitch a ride on high-flying dust

High-altitude dust may disperse bacterial and fungal pathogens for thousands of miles, seeding far-flung ecosystems and potentially impacting human health

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21 March 2019

Chemical tracers untangle natural gas from agricultural methane emissions

With natural gas booming across the Front Range, drilling rigs may operate within feet from cattle farms. That shared land use can confound attempts to understand trends in methane, a greenhouse gas and air pollutant—the gases emitted from these different sources blend together.

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14 January 2019

Costa Rican Deep Sea Connections: Up Against

Haz click aquí para blog en español By Mónika Naranjo González Back in 1869, John Wesley Hyatt probably knew he had stumbled upon something promising, but it is unlikely he knew just how revolutionary his concoction of cellulose, cotton fiber and camphor would be. After a New York firm offered $10,000 for anyone who could provide a substitute for ivory, Hyatt discovered a plastic that could be crafted into a variety …

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30 November 2018

Fairbanks air earns unwanted ranking

Fairbanks’s air quality issues began in 1901, when shallow water grounded a Gold Rush entrepreneur.

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26 October 2018

Study finds unexpected levels of bromine in power plant exhaust

Some coal-fired power plants in the United States emit gases that may produce harmful compounds in drinking water and can have significant effects on the atmosphere, according to new research. A new study published in the Journal of Geophysical Research: Atmospheres, a journal of the American Geophysical Union, finds unexpectedly high levels of reactive bromine-containing chemicals in plumes emitted by coal-fired power plants not using a particular type of exhaust-cleaning technology.

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8 February 2018

Urban heating punches city-shaped holes in fog over India

Scientists have observed discrete holes in widespread fog directly above cities in India, other regions of Asia and Europe. The fog holes increase in size as city populations increase, and the researchers suspect the urban heat island effect is likely to blame for the striking phenomenon.

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