The Colorado River cascaded in a flood from the Glen Canyon Dam Monday, the first step in an ongoing experiment to rebuild beaches and fish habitat in the iconic Grand Canyon.
Showing posts with label Ecologia. Show all posts
Showing posts with label Ecologia. Show all posts
Tuesday, 20 November 2012
Grand Canyon flooded to rebuild beaches
Grand Canyon flooded to rebuild beaches:
The Colorado River cascaded in a flood from the Glen Canyon Dam Monday, the first step in an ongoing experiment to rebuild beaches and fish habitat in the iconic Grand Canyon.
The Colorado River cascaded in a flood from the Glen Canyon Dam Monday, the first step in an ongoing experiment to rebuild beaches and fish habitat in the iconic Grand Canyon.
Monday, 19 November 2012
World Bank report warns of a bleak future without climate policy
World Bank report warns of a bleak future without climate policy: Emissions of man-made greenhouse gases are breaking new records every year and are putting the planet on a path towards 4-degree global warming probably as soon as by the end of this century, according to a new report co
Sunday, 18 November 2012
Plants and soils could exacerbate climate change as global climate warms
Plants and soils could exacerbate climate change as global climate warms: Washington DC (SPX) Nov 16, 2012
November 13, 2012 - Scientists from the American Meteorological Society (AMS) and University of California, Berkeley have demonstrated that plants and soils could release large amounts of carbon dioxide as global climate warms. This finding contrasts with the expectation that plants and soils will absorb carbon dioxide and is important because that additional carbon release from land surface
November 13, 2012 - Scientists from the American Meteorological Society (AMS) and University of California, Berkeley have demonstrated that plants and soils could release large amounts of carbon dioxide as global climate warms. This finding contrasts with the expectation that plants and soils will absorb carbon dioxide and is important because that additional carbon release from land surface
Melting Glaciers Raise Sea Level
Melting Glaciers Raise Sea Level: Innsbruck, Austria (SPX) Nov 18, 2012
Anthropogenic climate change leads to melting glaciers and rising sea level. Between 1902 and 2009, melting glaciers contributed 11 cm to sea level rise. They were therefore the most important cause of sea level rise. This is the result of a new assessment by scientists of the University of Innsbruck. They numerically modeled the changes of each of the world's 300 000 glaciers.
Anthropogenic climate change leads to melting glaciers and rising sea level. Between 1902 and 2009, melting glaciers contributed 11 cm to sea level rise. They were therefore the most important cause of sea level rise. This is the result of a new assessment by scientists of the University of Innsbruck. They numerically modeled the changes of each of the world's 300 000 glaciers.
Saturday, 27 October 2012
Rice and Global Warming
Rice and Global Warming: Rice is the most important grain with regard to human nutrition and caloric intake in the world, providing more than one fifth of the calories consumed worldwide by the human species. Without rice and the world will be a much different place. More carbon dioxide in the atmosphere, coupled with rising temperatures, is making rice agriculture a larger source of the potent greenhouse gas methane, according to a study published in Nature Climate Change by a research team that includes a University of California, Davis, plant scientist. The authors note that relatively simple changes in rice cultivation could help reduce methane emissions.
Italian snow levels, glaciers retreating
Italian snow levels, glaciers retreating: Rome (UPI) Oct 26, 2012
Climate change in Italy's mountainous areas is causing snow levels to retreat and the snow line in some areas is moving upward by 2,000 feet, researchers say.
The snow level in northern Italy's Valle D'Aosta region is at 10,800 feet above sea level, compared to 8,850 feet 30 years ago, ANSA news agency reported Friday.
The data were released Friday by the glacier observation unit
Climate change in Italy's mountainous areas is causing snow levels to retreat and the snow line in some areas is moving upward by 2,000 feet, researchers say.
The snow level in northern Italy's Valle D'Aosta region is at 10,800 feet above sea level, compared to 8,850 feet 30 years ago, ANSA news agency reported Friday.
The data were released Friday by the glacier observation unit
Thursday, 18 October 2012
Increased Rainfall Causes Drop in Sea Level?
Increased Rainfall Causes Drop in Sea Level?: Current perception of climate change leads us to believe that sea levels are constantly rising due to thermal expansion and melting ice caps. However, from the beginning of 2010 until mid-2011, the average level of the world's oceans dropped by 0.2 inches. According to a recent study in the journal Geophysical Research Letters, this sea level decline was due to an increase in the amount of rainfall in Australia, northern South America and Southeast Asia.
Wednesday, 26 September 2012
100 million to die by 2030 if world fails to act on climate
100 million to die by 2030 if world fails to act on climate: LONDON (Reuters) - More than 100 million people will die and global economic growth will be cut by 3.2 percent of gross domestic product (GDP) by 2030 if the world fails to tackle climate change, a report commissioned by 20 governments said on Wednesday.
Scientists predict major shifts in Pacific ecosystems by 2100
Scientists predict major shifts in Pacific ecosystems by 2100: Stanford CA (SPX) Sep 26, 2012
What if you woke up every day to find that the closest grocery store had moved several miles farther away from your home? Over time, you would have to travel hundreds of extra miles to find essential food for yourself and your family. This is potentially a scenario faced by thousands of marine animals affected by climate change.
What if you woke up every day to find that the closest grocery store had moved several miles farther away from your home? Over time, you would have to travel hundreds of extra miles to find essential food for yourself and your family. This is potentially a scenario faced by thousands of marine animals affected by climate change.
Monday, 24 September 2012
Acidifying seas threaten island nations' food security -study
Acidifying seas threaten island nations' food security -study: MONTEREY, California (Reuters) - Food security problems caused by climate change and ocean acidification will hit small island and coastal nations hardest, environmental group Oceana said on Monday.
Friday, 14 September 2012
Forest mortality and climate change: The big picture
Forest mortality and climate change: The big picture: Washington DC (SPX) Sep 14, 2012
Over the past two decades, extensive forest death triggered by hot and dry climatic conditions has been documented on every continent except Antarctica. Forest mortality due to drought and heat stress is expected to increase due to climate change. Although research has focused on isolated incidents of forest mortality, little is known about the potential effects of widespread forest die-offs.
Over the past two decades, extensive forest death triggered by hot and dry climatic conditions has been documented on every continent except Antarctica. Forest mortality due to drought and heat stress is expected to increase due to climate change. Although research has focused on isolated incidents of forest mortality, little is known about the potential effects of widespread forest die-offs.
Thursday, 13 September 2012
Wind Power and Climate Change
Wind Power and Climate Change: Though there is enough power in Earth's winds to be a primary source of near-zero emission electric power for the world, large-scale high altitude wind power generation is unlikely to substantially affect climate.
That is the conclusion of a Lawrence Livermore National Laboratory climate scientist and collaborators who studied the geophysical limits to global wind power in a paper appearing in the Sept. 9 edition of the journal Nature Climate Change.
"The future of wind energy is likely to be determined by economic, political and technical constraints rather than geophysical limits," said Kate Marvel, lead author of the paper and a scientist in the Laboratory's Program for Climate Model Diagnosis and Intercomparison.
That is the conclusion of a Lawrence Livermore National Laboratory climate scientist and collaborators who studied the geophysical limits to global wind power in a paper appearing in the Sept. 9 edition of the journal Nature Climate Change.
"The future of wind energy is likely to be determined by economic, political and technical constraints rather than geophysical limits," said Kate Marvel, lead author of the paper and a scientist in the Laboratory's Program for Climate Model Diagnosis and Intercomparison.
Wednesday, 12 September 2012
Iran President Blames West for Destroying Rain Clouds
Iran President Blames West for Destroying Rain Clouds:
Iranian President Mahmoud Ahmadinejad gestures during a welcome ceremony in Tehran on Sept. 1. (Atta Kenare/AFP/GettyImages)
Iranian President Mahmoud Ahmadinejad blamed the United States and Western powers for destroying rain clouds that would otherwise bring rain to the Middle Eastern country, which has one of the driest climates in the world.
The lack of rain is hurting Iran’s agricultural sector.
“Today our country is moving towards drought, which is partly unintentional due to industry and partly intentional, as a result of the enemy destroying the clouds moving towards our country and this is a war that Iran is going to overcome,” Ahmadinejad said, according to the Daily Telegraph.
The country has a very dry climate, with 65 percent of its territory being arid or hyper-arid, according to the United Nations Food and Agriculture Organization.
It receives, on average, less than one third of the world average precipitation as its rugged Zagros and Alborz mountains prevent rain clouds from reaching the central, southern, and eastern parts of Iran, the U.N. said.
It was not the first time that Iranian officials blamed the West for engineering a drought in Iran.
“I feel that the world arrogance and colonization (Iranian official code language for the US and its allies) by using their technologies, are affecting the environmental situation in Iran,” Hassan Mousavi, an Iranian vice president, was quoted as saying in July, according to the Telegraph.
Ahmadinejad made similar statements while opening a dam in Markazi province in May, but moments later, it started to rain, reported the Daily Mail.
The Epoch Times publishes in 35 countries and in 19 languages. Subscribe to our e-newsletter.
Iranian President Mahmoud Ahmadinejad gestures during a welcome ceremony in Tehran on Sept. 1. (Atta Kenare/AFP/GettyImages)
The lack of rain is hurting Iran’s agricultural sector.
“Today our country is moving towards drought, which is partly unintentional due to industry and partly intentional, as a result of the enemy destroying the clouds moving towards our country and this is a war that Iran is going to overcome,” Ahmadinejad said, according to the Daily Telegraph.
The country has a very dry climate, with 65 percent of its territory being arid or hyper-arid, according to the United Nations Food and Agriculture Organization.
It receives, on average, less than one third of the world average precipitation as its rugged Zagros and Alborz mountains prevent rain clouds from reaching the central, southern, and eastern parts of Iran, the U.N. said.
It was not the first time that Iranian officials blamed the West for engineering a drought in Iran.
“I feel that the world arrogance and colonization (Iranian official code language for the US and its allies) by using their technologies, are affecting the environmental situation in Iran,” Hassan Mousavi, an Iranian vice president, was quoted as saying in July, according to the Telegraph.
Related Articles
The Epoch Times publishes in 35 countries and in 19 languages. Subscribe to our e-newsletter.
Friday, 7 September 2012
Trout will become extinct in the Iberian Peninsula in less than 100 years
Trout will become extinct in the Iberian Peninsula in less than 100 years: Madrid, Spain (SPX) Sep 07, 2012
Climate change, pollution, the extraction of water for irrigation and overfishing all threaten the survival of the common trout. This fish is very sensitive to changes in its environment and, according to the Spanish study, its habitat will have reduced by half by the year 2040 and will have completely disappeared from Iberian rivers by 2100, so its population will become extinct.
Climate change, pollution, the extraction of water for irrigation and overfishing all threaten the survival of the common trout. This fish is very sensitive to changes in its environment and, according to the Spanish study, its habitat will have reduced by half by the year 2040 and will have completely disappeared from Iberian rivers by 2100, so its population will become extinct.
Glacial thinning has sharply accelerated at major South American icefields
Glacial thinning has sharply accelerated at major South American icefields: Washington DC (SPX) Sep 07, 2012
For the past four decades scientists have monitored the ebbs and flows of the icefields in the southernmost stretch of South America's vast Andes Mountains, detecting an overall loss of ice as the climate warms. A new study, however, finds that the rate of glacier thinning has increased by about half over the last dozen years in the Southern Patagonian Icefield, compared to the 30 years prior to
For the past four decades scientists have monitored the ebbs and flows of the icefields in the southernmost stretch of South America's vast Andes Mountains, detecting an overall loss of ice as the climate warms. A new study, however, finds that the rate of glacier thinning has increased by about half over the last dozen years in the Southern Patagonian Icefield, compared to the 30 years prior to
Salinity and Climate
Salinity and Climate: The degree of salinity in oceans is a driver of the world's ocean circulation, where density changes due to both salinity changes and temperature changes at the surface of the ocean produce changes in buoyancy, which cause the sinking and rising of water masses. Changes in the salinity of the oceans are thought to contribute to global changes in carbon dioxide as more saline waters are less soluble to carbon dioxide. A NASA-sponsored expedition is set to sail to the North Atlantic's saltiest spot to get a detailed, 3-D picture of how salt content fluctuates in the ocean's upper layers and how these variations are related to shifts in rainfall patterns around the planet. The research voyage is part of a multi-year mission, dubbed the Salinity Processes in the Upper Ocean Regional Study (SPURS), which will deploy multiple instruments in different regions of the ocean. The new data also will help calibrate the salinity measurements NASA's Aquarius instrument has been collecting from space since August 2011. Aquarius was built by NASA's Jet Propulsion Laboratory, Pasadena, Calif., and NASA's Goddard Space Flight Center, Greenbelt, Md.
Deforestation affects rainfall, another reason to protect the rainforests
Deforestation affects rainfall, another reason to protect the rainforests: From regulating climate systems to offering food and medicines, to being home to many plants, animals, and indigenous people, rainforests are not only a local ecosystem but their benefits extend globally.
Adding to its global effects is new research that shows rainforests have a huge impact on rainfall. A team from the University of Leeds and the NERC Centre for Ecology & Hydrology found that air passing over tropical forests produces at least twice as much rain as air passing over little vegetation and can impact rainfall thousands of miles away.
Adding to its global effects is new research that shows rainforests have a huge impact on rainfall. A team from the University of Leeds and the NERC Centre for Ecology & Hydrology found that air passing over tropical forests produces at least twice as much rain as air passing over little vegetation and can impact rainfall thousands of miles away.
Arctic melting at 'amazing' speed
Arctic melting at 'amazing' speed: The 'amazing' loss of Arctic ice and its climate implications
Tuesday, 4 September 2012
Major world interests at stake in Canada's vast Mackenzie River Basin
Major world interests at stake in Canada's vast Mackenzie River Basin: Vancouver, Canada (SPX) Sep 04, 2012
The governance of Canada's massive Mackenzie River Basin holds enormous national but also global importance due to the watershed's impact on the Arctic Ocean, international migratory birds and climate stability, say experts convening a special forum on the topic. "Relevant parties in western Canada have recognized the need for a multi-party transboundary agreement that will govern land and water
The governance of Canada's massive Mackenzie River Basin holds enormous national but also global importance due to the watershed's impact on the Arctic Ocean, international migratory birds and climate stability, say experts convening a special forum on the topic. "Relevant parties in western Canada have recognized the need for a multi-party transboundary agreement that will govern land and water
American Meteorological Society confirms Climate Change and Man's Role
American Meteorological Society confirms Climate Change and Man's Role: Weathercasters in the U.S. not only tend to not ever mention climate change, but the majority of them do not even believe it is human-caused, as an article I recently wrote shows. However, that may change. The American Meteorological Society (AMS) released an official position statement on climate change this week which not only said that it is occurring, but it is human-caused. What is so great about the statement by the AMS is that it includes so much information about climate change, including that there is scientific consensus. The AMS makes it clear that the statement is "based on the peer-reviewed scientific literature and is consistent with the vast weight of current scientific understanding."
The statement details how the climate is changing, both in the U.S. and around the world. The changes listed include increases in globally averaged air and ocean temperatures, the widespread melting of snow and ice, and the rising of globally averaged sea level. As the statement puts it, "Warming of the climate system now is unequivocal, according to many different kinds of evidence." That is not good news for the world's population, but it is good news that the AMS is acknowledging that climate change is real and is occurring.
The statement details how the climate is changing, both in the U.S. and around the world. The changes listed include increases in globally averaged air and ocean temperatures, the widespread melting of snow and ice, and the rising of globally averaged sea level. As the statement puts it, "Warming of the climate system now is unequivocal, according to many different kinds of evidence." That is not good news for the world's population, but it is good news that the AMS is acknowledging that climate change is real and is occurring.
Subscribe to:
Posts (Atom)