Quantcast

Latest Paleoclimatology Stories

2014-07-28 10:19:39

Oregon State University Scientists have long been concerned that global warming may push Earth's climate system across a "tipping point," where rapid melting of ice and further warming may become irreversible -- a hotly debated scenario with an unclear picture of what this point of no return may look like. A newly published study by researchers at Oregon State University probed the geologic past to understand mechanisms of abrupt climate change. The study pinpoints the emergence of...

2014-06-16 09:57:20

European Association of Geochemistry Two studies show that the movement rate of plates carrying the Earth's crust may not be constant over time. This could provide a new explanation for the patterns observed in the speed of evolution and has implications for the interpretation of climate models. The work is presented today at Goldschmidt 2014, the premier geochemistry conference taking place in Sacramento, California, USA. The Earth's continental crust can be thought of as an archive...

Lake Towuti
2014-03-25 12:05:49

Brown University Using sediments from a remote lake, researchers from Brown University have assembled a 60,000-year record of rainfall in central Indonesia. The analysis reveals important new details about the climate history of a region that wields a substantial influence on the global climate as a whole. The Indonesian archipelago sits in the Indo-Pacific Warm Pool, an expanse of ocean that supplies a sizable fraction of the water vapor in Earth's atmosphere and plays a role in...

2014-01-20 10:38:02

The role of the hydrological cycle during abrupt temperature changes is of prime importance for the actual impact of climate change on the continents. In a new study published in Nature Geoscience online (January 19, 2014) scientists from the University of Potsdam, Germany and the GFZ German Research Centre for Geosciences show that during the abrupt cooling at the onset of the so-called Younger Dryas period 12680 years ago changes in the water cycle were the main drivers of widespread...

Early Warning System Needed In A World With Changing Climates
2013-12-04 12:31:23

Lee Rannals for redOrbit.com - Your Universe Online The National Research Council says that even gradual climate change can have abrupt impacts in human infrastructure and ecosystems if critical thresholds are crossed, so an early warning system needs to be developed now, before its too late. The federal report calls for the development of an early warning system that could help anticipate sudden changes and emerging impacts. "Research has helped us begin to distinguish more imminent...

Earthworm Poop Could Help Improve Climate Change Models
2013-07-09 04:49:08

Susan Bowen for redOrbit.com - Your Universe Online A recent discovery about earthworm excrement could help scientists improve our models of future climate change. Most earthworms excrete balls of calcium carbonate crystals, a chalk-like material. What makes these crystals interesting is that they retain a memory of the temperature at which they were created. Scientists at the Universities of Reading and York conducted an experiment in which earthworms were kept at differing...

Lake Elgygytgyn
2013-05-10 05:02:04

April Flowers for redOrbit.com - Your Universe Online An international team of scientists, led by Julie Brigham-Grette of the University of Amherst, has analyzed the longest continental sediment core ever collected in the Arctic to provide “absolutely new knowledge” of Arctic climate from 2.2 million to 3.6 million years ago. "While existing geologic records from the Arctic contain important hints about this time period, what we are presenting is the most continuous archive...

Researchers Uncover Genetic Payload Of Ancient Plankton In Black Sea Sediments
2013-05-07 10:23:32

April Flowers for redOrbit.com - Your Universe Online Sorting through the vast amounts of genetic data from the Black Sea sediment record, Woods Hole Oceanographic Institution (WHOI) marine paleoecologist Marco Coolen was astounded by the variety of past plankton species that left behind their genetic makeup. This vast amount of data is called the plankton paleome. The Black Sea is semi-isolated from other bodies of water, and highly sensitive to climate driven environmental changes....

Antarctic Ecosystem Caused Rapid Evolution 041913
2013-04-19 09:39:52

redOrbit Staff & Wire Reports - Your Universe Online The development of the sea-ice ecosystem in the circum-Antarctic Southern Ocean may have triggered further adaptation and evolution of larger organisms such as baleen whales and penguins, according to a new study published Thursday in the journal Science. The area´s ecosystem can be traced back to the emergence of the Antarctic ice sheets some 33.6 million years ago and plays an important role in global marine food webs and...

2013-04-12 15:39:53

Harvard researchers are adding statistical nuance to our understanding of how modern and historical temperatures compare. Through developing a statistical model of Arctic temperature and how it relates to instrumental and proxy records derived from trees, ice cores, and lake sediments, Martin Tingley, a research associate in Harvard's Department of Earth and Planetary Sciences and Peter Huybers, Professor of Earth and Planetary Sciences, have shown that the warmest summers in the last two...


Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
Related