Tag Archives: climate change

Albedo increase by geoengineering could disrupt global rainfall patterns

A geoengineering solution to climate change could lead to significant rainfall reduction in Europe and North America, a team of European scientists concludes. The researchers studied how models of the Earth in a warm, CO2‑rich world respond to an artificial reduction in the amount of sunlight reaching the planet’s surface. The study is published today in Earth System Dynamics, an Open Access journal of the European Geosciences Union (EGU).

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Retreating glaciers threaten river biodiversity worldwide

The projected disappearance of small glaciers* worldwide threatens to eliminate the water supply for numerous towns in valleys, such as the Ecuadorian capital Quito, fed by the rivers that flow down from the surrounding mountains. But retreating ice is also a threat to freshwater fauna. According to a study published in Nature Climate Change, the local and regional diversity of mountain aquatic fauna will be reduced considerably if predictions are realised. Until now, the impact of global thawing on biodiversity in watercourses had never been calculated in detail.

Climate skepticism and alarm rising over past decade according to survey

Researchers have found that between 2002 and 2010 the images and emotions that the American public associates with global warming shifted significantly. Four consecutive nationwide surveys found both increasing skepticism and growing alarm among respondents. The researchers assessed Americans’ “cognitive risk representations” including the words, thoughts, and images, and the positive or negative feelings the public associates with global warming. The study also measured the underlying values of egalitarianism and individualism, as well as a variety of political, social and demographic characteristics.

Latin America and Asia at the forefront in planning for the effects of climate change

Quito, Ecuador, is not considered a global leader by most measures. But there is one way in which Quito is at the forefront of metropolises worldwide: in planning for climate change. For more than a decade, officials in Ecuador’s mountainous capital have been studying the effects of global warming on nearby melting glaciers, developing ways of dealing with potential water shortages and even organizing conferences on climate change for leaders of other Latin American cities.

Climate change lowers production of nuclear and coal-fired power plants

Warmer water and reduced river flows in the United States and Europe in recent years have led to reduced production, or temporary shutdown, of several thermoelectric power plants. For instance, the Browns Ferry Nuclear Plant in Alabama had to shut down more than once last summer because the Tennessee River’s water was too warm to use it for cooling.

climate change nuclear coal
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Amazonian highway is bad for the climate and hardly helps the economy

Paving a highway across South America is providing lessons on the impact of road construction elsewhere.

That’s what a University of Florida researcher and his international colleagues have determined from analyzing communities along the Amazonian portion of the nearly 4,200-mile Interoceanic Highway, a coast-to-coast road that starts at ports in Brazil and will eventually connect to ones in Peru.

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Rising thunderstorm clouds increase warming

As a regular you will be well aware that some clouds cool the climate and other clouds warm. Determining the exact balance of the cloud-climate feedback will help decrease uncertainty margins for 21st century warming forecasts. Unfortunately it’s a complicated … Continue reading →

Flatulent dinosaurs may have been a larger methane source than current human activities

The long-necked plant-eating dinosaurs known as sauropods that lived about 150 million years ago appear to have been rather flatulent. New calculations put the combined methane production of the hulking beasts at 520 million tonnes (Tg). As a comparison the … Continue reading →

Effects of climate change on mountain plants is delayed

Percentage of unsuitable occupied ecological sites

Percentage of unsuitable sites among those predicted to be occupied.

A modeling study from the European Alps suggests that population declines to be observed during the upcoming decades will probably underestimate the long-term effects of recent climate warming on mountain plants. A European team of ecologists around Stefan Dullinger from the Department of Conservation Biology, Vegetation and Landscape Ecology of the University of Vienna presents a new modeling tool to predict migration of mountain plants which explicitly takes population dynamic processes into account. Their results are published in “Nature Climate Change“.

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