Spring will be springing earlier in the US
October 14, 2015 07:57 AM - INSTITUTE OF PHYSICS via EurekAlert
Scientists have projected that the onset of spring plant growth will shift by a median of three weeks earlier over the next century, as a result of rising global temperatures.
The results, published today (Wednesday 14th October), in the journal Environmental Research Letters, have long term implications for the growing season of plants and the relationship between plants and the animals that depend upon them.
Winds Carve Away Antarctic Snow
October 13, 2015 10:27 AM - The Earth Institute, Columbia University
A new study has found that powerful winds are removing massive amounts of snow from parts of Antarctica, potentially boosting estimates of how much the continent might contribute to sea level. Up to now, scientists had thought that most snow scoured from parts of the continent was simply redeposited elsewhere on the surface. However, the new study shows that in certain parts, called scour zones, some 90 percent—an estimated 80 billion tons per year—is instead being vaporized, and removed altogether.
Swedish sand lizards like climate change
October 11, 2015 07:32 AM - BioMed Central via ScienceDaily
Higher temperatures result in Swedish sand lizards laying their eggs earlier, which leads to better fitness and survival in their offspring, according to research published in the open access journal BMC Evolutionary Biology.
The findings indicate that climate change could have positive effects on this population of high-latitude lizard, but the authors warn that climate change is likely to affect a whole suite of traits, in addition to egg-laying date, which together would have an unknown combined effect on survival and reproductive success.
The relationship between carbon cycles and climate
October 10, 2015 07:14 AM - UNIVERSITY OF MISSOURI-COLUMBIA via EurekAlert.
Making predictions about climate variability often means looking to the past to find trends. Now paleoclimate researchers from the University of Missouri have found clues in exposed bedrock alongside an Alabama highway that could help forecast climate variability. In their study, the researchers verified evidence suggesting carbon dioxide decreased significantly at the end of the Ordovician Period, 450 million years ago, preceding an ice age and eventual mass extinction. These results will help climatologists better predict future environmental changes.
The Ordovician geologic period included a climate characterized by high atmospheric carbon dioxide (CO2) levels, warm average temperatures and flourishing life. Near the end of the period, CO2 levels dropped significantly but precisely when and how fast is poorly known. Kenneth MacLeod, a professor in the Department of Geological Sciences in the MU College of Arts and Science, directed a research team studying the climate changes 450 million years ago to better understand the interactions among the biosphere, the oceans, atmospheric CO2 levels, and temperature.
Study of China's Yellow River yields unexpected information about the Earth's climate history
October 9, 2015 08:55 AM - Uppsala University via EurekAlert!
By meticulously examining sediments in China's Yellow River, a Swedish-Chinese research group are showing that the history of tectonic and climate evolution on Earth may need to be rewritten. Their findings are published today in the highly reputed journal Nature Communications.
Arctic butterflies adapt to warming climate by getting smaller
October 7, 2015 06:39 AM - AARHUS UNIVERSITY via EurekAlert!
New research shows that butterflies in Greenland have become smaller in response to increasing temperatures due to climate change.
It has often been demonstrated that the ongoing rapid climate change in the Arctic region is causing substantial change to Arctic ecosystems. Now Danish researchers demonstrate that a warmer Greenland could be bad for its butterflies, becoming smaller under warmer summers.
Outsourcing manufacturing to China and the climate
October 6, 2015 07:40 AM - Belfer Center for Science and International Affairs, Harvard Kennedy School
In a study published today in the journal Nature Climate Change, scientists from three universities demonstrate that buying a product made in China causes significantly higher carbon dioxide emissions than purchasing the same product made elsewhere. The study, titled "Targeted opportunities to address the climate–trade dilemma in China," is available here.
"The amazing increase in Chinese manufacturing over the past 15 years has driven the world economy to new heights and supplied consumers in developed countries with tremendous quantities of lower-cost goods," said co-author Steven J. Davis, UCI assistant professor of Earth system science. "But all of this has come at substantial cost to the environment."
Evidence confirms volcanic island collapses may trigger mega-tsunamis
October 5, 2015 08:46 AM - Bristol University
A pre-historical sudden collapse of one of the tallest and most active oceanic volcanoes on Earth — Fogo, in the Cape Verde Islands – triggered a mega-tsunami with waves impacting 220 metres (721 feet) above present sea level resulting in catastrophic consequences, according to a new University of Bristol study published in Science Advances.
Sierra Nevada snowpack at historic low
October 3, 2015 06:52 AM - Mike Gaworecki , MONGABAY.COM
On April 1, California Governor Jerry Brown stood in a Sierra Nevada meadow atop parched, brown grass — at an elevation of 6,800 feet, where there would normally be five feet of snow at that time of year — and announced the state’s first-ever mandatory water restrictions.
The Golden State is still in the grip of a severe drought that began in 2012, and new research suggests it is one of the worst in centuries.
The day Gov. Brown announced the statewide water restrictions, snowpack in the Sierra Nevadas was reported to be at just 5 percent of its historical average, as calculated from records dating back to the 1930s.
Can Climate Change alter the shape of the Earth?
October 1, 2015 04:34 PM - University of British Columbia
Climate change is causing more than just warmer oceans and erratic weather. According to scientists, it also has the capacity to alter the shape of the planet.