Articles with the keyword: 
Time series identify population responses to climate change
piggy submitted, created time 1 year 3 months (www.eurekalert.org)
Biologists have for several years modeled how different species are likely to respond to climate change. Most such studies ignore differences between populations within a species and the interactions between species, in the interest of simplicity. An article in the June issue of BioScience, by Eric Post of Pennsylvania State University and five colleagues, shows how these limitations can be avoided. Their approach, which relies on multi-stage analyses of how populations fluctuate over time, could allow biologists to model responses to climate change with improved accuracy 
Nobellists urge action on climate change
sea-maid submitted, created time 1 year 3 months (www.nature.com)
But some question whether binding emmissions targets are needed.
Climate Change: Halving Carbon Dioxide Emissions By 2050 Could Stabilize Global Warming
sea-maid submitted, created time 1 year 4 months (www.sciencedaily.com)
If CO2 emissions are halved by 2050 compared to 1990, global warming can be stabilised below two degrees. This is shown by two studies by a co-operation of German, Swiss and British researchers in the journal Nature.
Coral Fossils Reveal Sea Levels Rising Fast
sea-maid submitted, created time 1 year 4 months (www.time.com)
Heat waves, droughts and mass extinctions are all potential threats from climate change. But the scariest risk has always been that of rapid sea-level rise caused by the collapse of the massive ice sheets in Greenland and Antarctica. There is enough water locked on Greenland alone to raise global sea levels by 23 ft. (7 m) if it melted, which would swamp coastal cities like London and Shanghai and all but wipe away small island states like the Maldives and Tuvalu
sea-maid submitted, created time 1 year 5 months (www.nature.com)
Climate change can take the blame for many dim prospects: rising sea levels, more frequent droughts and disappearing glaciers, to name just a few. But perhaps the warming trend should be absolved of responsibility for a predicted bump in the global burden of infectious disease.
A paper in the April issue of Ecology suggests that, while warming temperatures will likely cause disease bearers to shift in range, these ranges may not significantly increase in size. The data are primarily concerned with malaria and yellow fever
Settling of dust warms tropical Atlantic
sea-maid submitted, created time 1 year 5 months (www.nature.com)
Some of the rise in ocean temperatures in the tropical Atlantic might be due to a lower-than-usual level of aerosols in the atmosphere--dust particles tossed up by volcanoes or dust storms in Africa.
The study views the effects of volcanic eruptions in 1982 and 1991 and the Sahel drought.
March of Penguins Turning into Trail of Tears
sea-maid submitted, created time 1 year 5 months (blog.wired.com)
Emperor penguins could be headed toward extinction if Antarctic sea ice shrinks as projected.
Ocean Less Effective at Absorbing Carbon Dioxide Emitted by Human Activity
sea-maid submitted, created time 1 year 6 months (www.sciencedaily.com)
In the Southern Indian Ocean, climate change is leading to stronger winds, which mix waters, bringing CO2 up from the ocean depths to the surface. This is the conclusion of researchers who have studied the latest field measurements carried out by CNRS's INSU, IPEV and IPSL. As a result, the Southern Ocean can no longer absorb as much atmospheric CO2 as before. Its role as a carbon sink has been weakened, and it may now be ten times less efficient than previously estimated. The same trend can be observed at high latitudes in the North Atlantic.
Ozone layer may grow back faster over northern lattitudes
Darkfrog submitted, created time 1 year 7 months (sciencenow.sciencemag.org)
This will come as no shock to anyone who has been paying attention: Things are complicated.
In general, the depletion of the ozone layer and climate change (a term usually used to mean global warming caused by human activity) are directly linked. However, due to changes in air currents and other factors, places such as North America and Europe may see a thickening--or at least a REthickening--of their patch of ozone before the rest of the planet does. This will probably not change overall average temperatures, but will affect the levels of radiation that reach the surface.
Research ties tree mortality trends to climate warming
piggy submitted, created time 1 year 7 months (www4.nau.edu)
Global warming is speeding up the mortality of trees, and NAU research is providing some of the data to prove it.
Pete Fulé, an NAU associate professor in the School of Forestry and a director of the university's Ecological Restoration Institute, is a coauthor of "Widespread Increase of Tree Mortality Rates in the Western United States," an article to be published in the Jan. 23 issue of Science journal.
The study, led by principal authors Phillip J. van Mantgem and Nathan L. Stephenson, scientists with the Western Ecological Research Center for the U.S
Report calls aerosol research key to improving climate predictions
sea-maid submitted, created time 1 year 7 months (www.eurekalert.org)
Scientists need a more detailed understanding of how human-produced atmospheric particles, called aerosols, affect climate in order to produce better predictions of Earth's future climate, according to a NASA-led report issued by the US Climate Change Science Program on Friday.
Greenhouse gases hit modern-day highs
sea-maid submitted, created time 1 year 8 months (www.nature.com)
Atmospheric concentrations of greenhouse gases reached new highs in 2007, according to the most recent analysis by the World Meteorological Organization (WMO).
Concentrations of carbon dioxide, methane and nitrous oxide — which together contribute 88% of the anthropogenic global-warming effect — were last year 37%, 156% and 19% above pre-industrial levels, respectively.
Since 1990, total radiative forcing — the re-radiation of heat back towards Earth's surface — by all long-lived heat-trapping gases has increased by 24%, the WMO reports
Carbon dioxide levels may put the squeeze on squid
Darkfrog submitted, created time 1 year 8 months (www.nytimes.com)
This is a New York Times writeup of an issue discussed in PNAS. It seems that rising CO2 levels may disproportionately affect the most delicious I mean mysterious of all sea creatures: the squid.
As the oceans absorb more carbon dioxide from the air, they become more acidic. This can affect corals and other small organisms, but it can also affect bigger creatures, like large, ready-to-eat I mean shell-less mollusks
sea-maid submitted, created time 1 year 8 months (www.nature.com)
In a Commentary in this week's Nature, science policy experts Daniel Sarewitz of Arizona State University in Tempe and Richard Nelson of Columbia University in New York argue that removing carbon dioxide directly from the air is an effective way to tackle climate change. Nature News asks how advanced the plans to do this are.
Nobel physicist to run energy agency
sea-maid submitted, created time 1 year 8 months (www.nature.com)
By choosing Nobel-prizewinning physicist Steven Chu to head the Department of Energy (DoE), US President-elect Barack Obama has sent a clear message: solving climate issues in a world dependent on fossil fuels will depend on science coming up with new energy technologies.
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