Justices: National Security Strongly Outweighs Alleged Harm to Marine Mammals
The Supreme Court ruled on Wednesday that the U.S. Navy's need to conduct realistic training with active sonar outweighs the concerns of environmentalists that the sonar could damage marine life.
The decision means the Navy can go forward with exercises off the coast of Southern California and does not have to sharply limit sonar use.
Chief Justice John Roberts began the opinion by quoting George Washington: "To be prepared for war is one of the most effectual means of preserving peace."
Earth Changes
NASA'S Goddard Institute for Space Studies (GISS) is one of the world's primary sources for climate data. GISS issues regular updates on world temperatures based on their analysis of temperature readings from thousands of monitoring stations over the globe.
GISS' most recent data release originally reported last October as being extraordinarily warm-- a full 0.78C above normal. This would have made it the warmest October on record; a huge increase over the previous month's data.
Those results set off alarm bells with Steve McIntyre and his gang of Baker Street irregulars at Climateaudit.org. They noted that NASA's data didn't agree at all with the satellite temperature record, which showed October to be very mild, continuing the same trend of slight cooling that has persisted since 1998. So they dug a little deeper.
GISS' most recent data release originally reported last October as being extraordinarily warm-- a full 0.78C above normal. This would have made it the warmest October on record; a huge increase over the previous month's data.
Those results set off alarm bells with Steve McIntyre and his gang of Baker Street irregulars at Climateaudit.org. They noted that NASA's data didn't agree at all with the satellite temperature record, which showed October to be very mild, continuing the same trend of slight cooling that has persisted since 1998. So they dug a little deeper.
QUITO - Lava was rising anew in the crater of Ecuador's Reventador volcano on Monday, a day after bursts of ash forced temporary closure of the capital's airport.
The sun is nearly 150 million kilometres away, but it seems to have Earth's rivers on a leash. The flow of a huge South American river - and thus the rainfall that feeds it - appears to rise and fall with the number of sunspots.
Though scientists reject the climate sceptics' assertion that the sun's activity can explain global warming, many have wondered whether it can affect rainfall. No one has been able to test this, though, as it has proved difficult to collate rainfall measurements over long timescales and areas large enough to rule out local variations.
Though scientists reject the climate sceptics' assertion that the sun's activity can explain global warming, many have wondered whether it can affect rainfall. No one has been able to test this, though, as it has proved difficult to collate rainfall measurements over long timescales and areas large enough to rule out local variations.
Throughout history, the changing fortunes of human societies in Asia have been linked to variations in the precipitation resulting from seasonal monsoons. A new paper published in the British journal Nature Geoscience suggests that variations in monsoon climate over longer time scales also influenced the evolution of the world's highest mountain chain, the Himalaya.
The climate over much of Asia is dominated by seasonal winds that carry moist air over the Pacific Ocean into East Asia and over the Indian Ocean into South Asia. The East and South Asian monsoons are responsible for most of the rainfall in these regions. Although the time when these monsoon patterns were first established is unknown, many lines of evidence suggest that they first came about at least 24 million years ago.
© iStockphoto/Andrzej Stajer
Himalayas (view on Ama Dablam in Khumbu Valley). Variations in monsoon climate over longer time scales have influenced the evolution of the world's highest mountain chain, the Himalaya.
Himalayas (view on Ama Dablam in Khumbu Valley). Variations in monsoon climate over longer time scales have influenced the evolution of the world's highest mountain chain, the Himalaya.
The climate over much of Asia is dominated by seasonal winds that carry moist air over the Pacific Ocean into East Asia and over the Indian Ocean into South Asia. The East and South Asian monsoons are responsible for most of the rainfall in these regions. Although the time when these monsoon patterns were first established is unknown, many lines of evidence suggest that they first came about at least 24 million years ago.
A NASA-led research team has used satellite data to make the most precise measurements to date of changes in the mass of mountain glaciers in the Gulf of Alaska, a region expected to be a significant contributor to global sea level rise over the next 50-100 years.
Geophysicist Scott Luthcke of NASA's Goddard Space Flight Center, Greenbelt, Md., and colleagues knew from well-documented research that changes in the cryosphere - glaciers, ice caps, and other parts of the globe covered year-round by ice -- are a key source of most global sea level rise. Melting ice will also bring changes to freshwater resources and wildlife habitat. Knowing that such ice-covered areas are difficult to observe consistently, the team worked to develop a satellite-based method that could accurately quantify glacial mass changes across seasons and years, and even discern whether individual glacier regions are growing or shrinking.
© NASA
The mass changes of the Gulf of Alaska glaciers are computed from the Gravity Recovery and Climate Experiment (GRACE) inter-satellite rate data from April 2003 through September 2007. Using space-borne gravity measurements to assess glacier mass balance NASA scientists determine mass variations along the Gulf of Alaska. Areas of deep blue like the areas around Glacier Bay and the Yakutat Icefield represent significant mass loss where inland areas of dark gray represent slight mass gains.
The mass changes of the Gulf of Alaska glaciers are computed from the Gravity Recovery and Climate Experiment (GRACE) inter-satellite rate data from April 2003 through September 2007. Using space-borne gravity measurements to assess glacier mass balance NASA scientists determine mass variations along the Gulf of Alaska. Areas of deep blue like the areas around Glacier Bay and the Yakutat Icefield represent significant mass loss where inland areas of dark gray represent slight mass gains.
Geophysicist Scott Luthcke of NASA's Goddard Space Flight Center, Greenbelt, Md., and colleagues knew from well-documented research that changes in the cryosphere - glaciers, ice caps, and other parts of the globe covered year-round by ice -- are a key source of most global sea level rise. Melting ice will also bring changes to freshwater resources and wildlife habitat. Knowing that such ice-covered areas are difficult to observe consistently, the team worked to develop a satellite-based method that could accurately quantify glacial mass changes across seasons and years, and even discern whether individual glacier regions are growing or shrinking.
Antarctica overall has cooled measurably during the last 35 years - despite a global average increase in air temperature of 0.06 degrees Celsius during the 20th century - making it unique among the Earth's continental landmasses, according to a paper published today in the online version of Nature.
Researchers with the National Science Foundation (NSF) Longterm Ecological Research (LTER) site in Antarctica's Dry Valleys - a perpetually snow-free, mountainous area adjacent to McMurdo Sound - argue in the paper that long-term data from weather stations across the continent, coupled with a separate set of measurements from the Dry Valleys, confirm each other and corroborate the continental cooling trend.
Researchers with the National Science Foundation (NSF) Longterm Ecological Research (LTER) site in Antarctica's Dry Valleys - a perpetually snow-free, mountainous area adjacent to McMurdo Sound - argue in the paper that long-term data from weather stations across the continent, coupled with a separate set of measurements from the Dry Valleys, confirm each other and corroborate the continental cooling trend.
BEIJING - A strong magnitude 6.5 earthquake struck remote northwestern China on Monday, the U.S. Geological Survey said. There were no immediate reports of casualties.
One of the coldest Octobers on record in the Interior has the Yukon River grinding to a halt and residents settling in for winter.
October 2008 went down as Fairbanks' fourth-coldest October on record since 1904, according to meteorologist Rick Thoman with the National Weather Service in Fairbanks. The average temperature of 15.1 degrees was 8.4 degrees below normal.
The coldest October on record in Fairbanks was in 1996, which had an average temperature of 13.1 degrees.
"That year we had three days in a row with lows in the mid 20s below," Thoman recalled. "We didn't have anything quite like that this year.
October 2008 went down as Fairbanks' fourth-coldest October on record since 1904, according to meteorologist Rick Thoman with the National Weather Service in Fairbanks. The average temperature of 15.1 degrees was 8.4 degrees below normal.
The coldest October on record in Fairbanks was in 1996, which had an average temperature of 13.1 degrees.
"That year we had three days in a row with lows in the mid 20s below," Thoman recalled. "We didn't have anything quite like that this year.
© REUTERS/M. Rauschert/Census of Marine Life handout
Megaleledone setebos, a shallow-water circum-Antarctic species endemic to the Southern Ocean is seen in this undated handout
Megaleledone setebos, a shallow-water circum-Antarctic species endemic to the Southern Ocean is seen in this undated handout
Researchers in 82 nations, whose 10-year study aims to help protect life in the seas, found a mysterious meeting place for white sharks in the eastern Pacific Ocean and algae thriving at -25 degrees Celsius (-13 Fahrenheit) in the Arctic.
"We are approaching a picture of the oceans ... from micrcobes to whales," said Ron O'Dor, co-senior scientist of the census of the 2007-08 findings by up to 2,000 scientists.
