Search results
Results from the WOW.Com Content Network
On a scale of 1 out of 7, where higher numbers indicated greater disagreement, "global warming is already underway" had a mean rating of 3.4, and "global warming will occur in the future" had an even greater agreement of 2.6 Surveyed scientists had less confidence in the accuracy of contemporary climate models, rating their ability to make ...
Volcanic eruptions are considered an internal forcing. [45] Human changes of the composition of the atmosphere or land use. [45] Human activities causing anthropogenic greenhouse gas emissions leading to global warming and associated climate changes. Large asteroids that have cataclysmic impacts on Earth’s climate are considered external ...
William J. McGuire (born 1954) is a volcanologist and Emeritus Professor of Geophysical & Climate Hazards at University College London. [1] His main interests include volcano instability and lateral collapse, the nature and impact of global geophysical events and the effect of climate change on geological hazards.
The scientific community is abuzz following the first eruption of Mauna Loa—the world’s largest volcano, situated on the Island of Hawaii—since 1984. The eruption occurred just before ...
From ancient times, people suspected that the climate of a region could change over the course of centuries. For example, Theophrastus, a pupil of Ancient Greek philosopher Aristotle in the 4th century BC, told how the draining of marshes had made a particular locality more susceptible to freezing, and speculated that lands became warmer when the clearing of forests exposed them to sunlight.
A mass extinction event that brought about the rise of the dinosaurs more than 200 million years ago was believed to be caused by the planet’s warming. Now, scientists at Columbia University say ...
A volcanologist is a geologist who studies the eruptive activity and formation of volcanoes and their current and historic eruptions. Volcanologists frequently visit volcanoes, especially active ones, to observe volcanic eruptions, collect eruptive products including tephra (such as ash or pumice), rock and lava samples. One major focus of ...
He was a post-doc at the NASA, Goddard Institute for Space Studies in New York City and Lamont–Doherty Earth Observatory in Palisades, New York studying climate change. He was an Associate Research Scientist at the NASA, Goddard Institute for 5 years, studying the effects of volcanic eruptions on climate, before taking up his present position ...