Climate Science

Order of the National Green Tribunal regarding deterioration of Nayar river, Uttarakhand, 05/06/2025

Order of the National Green Tribunal in the matter of In Re: News Item titled "Nayar river is vanishing - a yatra reveals conservation goes beyond science and policy" appearing in ‘The Down To Earth’ dated 03.06.2025. The original application was registered suo-motu based on the news item titled "Nayar …

Changing boreal methane sources and constant biomass burning during the last termination

Past atmospheric methane concentrations show strong fluctuations in parallel to rapid glacial climate changes in the Northern Hemisphere, superimposed on a glacial

Climate change: Losing greenland

When people talk about catastrophic climate change, there's a fair chance that Greenland is on their mind. If they use the term 'tipping point', then it is pretty much a sure thing. One-twentieth of the world's ice is locked up atop that island, and if it were to melt completely, …

Glacial melt thaws South Asian rivalry

More than 70 international climate scientists met in Kathmandu earlier this month to begin the tricky scientific

Making the right choices in climate change

Two years ago, Eduardo Ferreira was studying the microbiology of cancer cells in S

CO2 map zooms in on emissions

US scientists have unveiled a new, high-resolution interactive map which tracks patterns of CO2 emissions coming from fossil fuels burned daily across the country. The maps and system, called Vulcan, show CO2 emissions in more than 100 times greater detail than was previously available. Until now, scientists say, data on …

Cosmic rays 'not causing climate change'

Scientists at two UK universities have produced evidence to debunk a popular alternative theory to explain climate change. The scientists were unable to find a link between cosmic rays and cloud cover Following a year long study, emeritus professors Terry Sloan, of Lancaster University, and Arnold Wolfendale, of Durham University, …

Australia pressed to take lead on carbon capture

Can Australia lead the world in carbon capture technology? The influential climate scientist James Hansen hopes so. In an open letter published last week, he asked Australian prime minister Kevin Rudd not to build any new coal-fired power plants until the technology to capture and store carbon dioxide is ready.

Airborne Study Of Arctic Atmosphere, Air Pollution Launched

This month, NASA begins the most extensive field campaign ever to investigate the chemistry of the Arctic's lower atmosphere. The mission is poised to help scientists identify how air pollution contributes to climate changes in the Arctic. The recent decline of sea ice is one indication the Arctic is undergoing …

Research to trap carbon in soil

A potential new weapon in the battle against global warming - to remove carbon from the atmosphere by locking it up permanently in soil minerals - is being developed at Newcastle University in the UK. When plants absorb carbon dioxide from the atmosphere during photosynthesis, they use some of the …

Climate change: research suggests it is not a swindle

New research has dealt a blow to the skeptics who argue that climate change is all due to cosmic rays rather than to man-made greenhouse gases. The new evidence shows no reliable connection between the cosmic ray intensity and cloud cover. Lauded and criticised for offering a possible way out …

Arctic climate impact science: an update since ACIA

This report presents a wide-ranging review of arctic climate impact science. It spans the width of subject areas, covering impacts on physical and biological systems, as well as on humanity. The report presents the scientific evidence for arctic climate change impacts in review sections, each of which targets a particular …

Tree rings and ice cores reveal 14C calibration uncertainties during the Younger Dryas

Attaching a 'floating' tree-ring chronology to ice core records that cover the abrupt Younger Dryas cold interval during the last glacial termination provides a better estimate of the onset and duration of the radiocarbon anomaly. The chronology suggests that marine records may be biased by changes in the concentration of …

Tree rings floating on ice cores

Because of difficulties in creating a radiocarbon calibration that covers the end of the last glaciation, defining the timing and duration of the Younger Dryas cold event has been a challenge. Linking related cosmogenic isotopes in tree rings and ice cores may provide new insights into abrupt climate changes.

Hurricanes and global warming- results from downscaling IPCC AR4 simulations

A new technique for deriving hurricane climatologies from global data, applied to climate models, indicates that global warming should reduce the global frequency of hurricanes, though their intensity may increase in some locations. Tropical cyclones account for the majority of natural catastrophic losses in the developed world and, next to …

First centre to monitor climate change comes up in Chennai

India's first centre dedicated to monitoring climate change and finding country-specific solutions was opened at Anna University by R.K. Pachauri, Chairman of the Intergovernmental Panel on Climate Change, on Friday. "Tamil Nadu has always been a few steps a head of the nation when it comes to innovation. The centre …

Comment: Who are the real climate experts?

Next week, government negotiators will gather in Bangkok, Thailand, for the latest round of international climate change talks. Once again the focus will be on mitigating climate change by reducing greenhouse gas emissions. Yet for many poor communities in poor countries, mitigation is not the most pressing issue. Climate change …

Recording Earth's vital signs

This year marks the 50th anniversary of the start of the Mauna Loa CO2 record, the longest continuous record of CO2 in the atmosphere. Initiated by Charles D. Keeling of the Scripps Institution of Oceanography, the record provided the first compelling evidence that the concentration of CO2 in the atmosphere …

Study fingers soot as a major player in global warming

Climate change authorities long ago tagged carbon dioxide public enemy number one. Now, there may be a new number two: tiny particles of black carbon, or soot. According to a new analysis reported online in Nature Geoscience, climate scientists are concluding that reports such as last November's assessment by the …

Global and regional climate changes due to black carbon

Abstract Black carbon in soot is the dominant absorber of visible solar radiation in the atmosphere. Anthropogenic sources of black carbon, although distributed globally, are most concentrated in the tropics where solar irradiance is highest. Black carbon is often transported over long distances, mixing with other aerosols along the way. …

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