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Clouds reveal new particle formation process

2016-02-15 19:02:00| Climate Ark Climate Change & Global Warming Newsfeed

ScienceDaily: n addition to precipitation, clouds influence the climate in various ways: they cover 70% of Earth's surface and represent nearly 15% of the volume of the atmosphere. Scientists need to understand their underlying chemical and physical mechanisms in order to better integrate them into climate change models. An international team of researchers at the Laboratoire interuniversitaire des systmes atmosphériques (CNRS/Université Paris-Est Créteil/Université Paris Diderot) and the Laboratoire chimie...

Tags: process formation reveal clouds

What's melting Greenland's ice sheet? Night clouds, say scientists

2016-01-14 15:00:00| Climate Ark Climate Change & Global Warming Newsfeed

Christian Science Monitor: Clouds play an important role in melting Greenlands ice sheet, say scientists. A team of scientists from the University of Leuven in Belgium have found that clouds are raising the temperature of the Greenland Ice Sheet by up to 3 degrees, contributing to almost 30 percent of the sheets melting, according a study published Tuesday in the journal Nature Communications. With climate change at the back of our minds, and the disastrous consequences of a global sea level rise, we need to understand...

Tags: night ice sheet scientists

Antarcticas clouds are a big mystery to climate scientists

2016-01-06 20:18:00| Climate Ark Climate Change & Global Warming Newsfeed

Grist: I know what you`re thinking: Clouds can`t possibly be that complicated, right? They`re just a bunch of water vapor hanging out in the atmosphere, and sometimes they leak. Sure, there are a lot of variables at stake: temperature on land and at sea, wind speeds both local and global, humidity, pressure, not to mention a changing climate. And, yes, clouds are subject to chaotic physical forces such that even the most detailed measurements can`t explain what will happen more than a few hours into...

Tags: big mystery climate scientists

Study Shows Larger Effect of Clouds on El Nio

2016-01-04 21:38:00| Climate Ark Climate Change & Global Warming Newsfeed

New York Times: Clouds help amplify El Nios effect on the atmosphere to a greater degree than once thought, a new study reports. In El Nio conditions, sea surface temperatures in the Pacific Ocean become unusually warm and tall thunderheads, known as cumulonimbus clouds, form over the water. Above them, a layer of colder cirrus clouds also appears. The cirrus clouds trap heat. They act as a blanket and further warm the atmosphere, said Thorsten Mauritsen, a meteorologist at the Max Planck Institute for Meteorology...

Tags: study larger shows effect