Fertilisers behind increase in atmospheric nitrous oxide

By Darren Osborne, ABC16 March 2012 The increasing amount of nitrous oxide in the atmosphere over the last 65 years is due to nitrogen-based fertilisers, according to a new study. An international team of scientists, led by University of California-Berkeley researcher Dr Sunyoung Park, made the finding after studying air collected at the Cape Grim […]

New pollution site: Dead Trees, Dying Forests

Prominent doom blogger Gail Zawacki, of Wit’s End fame, has succumbed to the demands of her high-school-aged kid and created a new website for her collection of photographs and scientific papers. Here’s how Gail describes the new site: I hadn’t paid much attention to climate change, even though I saw An Inconvenient Truth when it […]

Study shows unprecedented loss of ozone above Arctic

Loss of the Earth’s ozone layer above the Arctic last winter was unprecedented, scientists at NASA’s Jet Propulsion Laboratory told CNN on Monday. In findings published in a new study in the journal Nature, scientists said a hole in the ozone was caused by an unusually long period of low temperatures in the stratosphere, the […]

Climate change increases the risk of ozone damage to plants, Swedish research finds

[This one’s for Gail.] ScienceDaily (June 30, 2011) – Ground-level ozone is an air pollutant that harms humans and plants. Both climate and weather play a major role in ozone damage to plants. Researchers at the University of Gothenburg, Sweden, have now shown that climate change has the potential to significantly increase the risk of […]

Ozone hole has dried Australia, scientists find

By Richard Black Environment correspondent, BBC News21 April 2011 The Antarctic ozone hole is about one-third to blame for Australia’s recent series of droughts, scientists say. Writing in the journal Science, they conclude that the hole has shifted wind and rainfall patterns right across the Southern Hemisphere, even the tropics. Their climate models suggest the […]

Graph of the Day: Arctic Ozone Loss from 2010 to 2011

Caption by Mike Carlowicz and Kristyn Ecochard30 March 2011 Recent observations from satellites and ground stations suggest that atmospheric ozone levels for March in the Arctic were approaching the lowest levels in the modern instrumental era. What those readings mean for the remainder of the year is unclear. But what they mean for the long-term […]

Image of the Day: Haze over China Viewed from Orbit, 20 February 2011

Caption by Holli RiebeekFebruary 22, 2011 Dense smog settled over the North China Plain on February 20, 2011. The featureless gray-brown haze is so thick that the ground is not visible in parts of this photo-like image taken at 11:35 a.m. by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. At that time, […]

Eutrophication makes toxic cyanobacteria more toxic

Gothenburg, Sweden (SPX) Dec 09, 2010 – Continued eutrophication of the Baltic Sea, combined with an ever thinner ozone layer, is favouring the toxic cyanobacterium Nodularia spumigena, reveals research from the University of Gothenburg, Sweden. “There are several species of cyanobacteria, or blue-green algae, that can form surface blooms in the Baltic Sea,” explains Malin […]

Scientists say radiation leaving whales sunburned

Scientists say some whale species off the Mexican coast are showing signs of severe sunburn that may be caused by the damaged ozone layer’s decreased ability to block ultraviolet radiation. By RAPHAEL G. SATTER, Associated PressNovember 10, 2010 LONDON — Scientists say some whale species off the Mexican coast are showing signs of severe sunburn […]

Human activities overloading ecosystems with nitrogen

By Staff WritersWashington DC (SPX) Oct 11, 2010 Humans are overloading ecosystems with nitrogen through the burning of fossil fuels and an increase in nitrogen-producing industrial and agricultural activities, according to a new study. While nitrogen is an element that is essential to life, it is an environmental scourge at high levels. According to the […]

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