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 …
A new paper shows that regional and even global temperatures are being temporarily held down by a natural jostling of the climate system, driven in large part by vacillating ocean currents.
The effects of global warming over the coming decades will be modified by shorter-term climate variability. Finding ways to incorporate these variations will give us a better grip on what kind of climate change to expect.
Studies suggest that tropical cyclones are becoming more powerful with the most dramatic increase in the North Atlantic. The increase is correlated with an increase in ocean temperature. A debate concerns the nature of these increases with some studies attributing them to natural climate fluctuations, and others suggesting climate change …
A unique drilling project in the western Ross Sea has revealed that Antarctica had a much more eventful climate history than previously assumed. A new sediment core hints that the western part of the now-frozen continent went through prolonged ice-free phases
On geological timescales, carbon dioxide enters the atmosphere through volcanism and organic matter oxidation and is removed through mineral weathering and carbonate burial. An analysis of ice-core CO2 records and marine carbonate chemistry indicates a tight coupling between these processes during the past 610,000 years, which suggests that a weathering …
Oxygen-poor waters occupy large volumes of the intermediate-depth eastern tropical oceans. Oxygen-poor conditions have far-reaching impacts on ecosystems because important mobile microorganisms avoid or cannot survive in hypoxic zones. Climate models predict declines in oceanic dissolved oxygen produced by global warming. The researchers constructed a 50-year time series of dissolved-oxygen …
Subglacial water can significantly affect the velocity of ice streams and outlet glaciers of ice sheets. Depending on the geometry and capacity of the subglacial hydrologic system, increased surface melting in Greenland over the coming decades may influence the ice sheet's mass balance. Furthermore, subglacial lakes in Antarctica can modulate …
The generally warm and ice-free conditions of the Eocene epoch rapidly declined to the cold and glaciated state of the Oligocene epoch. Geochemical evidence from deep-sea sediments resolves in detail the climatic events surrounding this transition.
Atmospheric carbon dioxide levels greatly influence the Earth's climate. Evidence from ice cores and marine sediments suggests that over timescales beyond the glacial cycles, carbon fluxes are finely balanced and act to stabilize temperatures.
deposits in Sanbao cave in Central China tell the story of the region's climate more than 200,000 years ago. They also reveal the working of the East Asian monsoon over timescales that range over thousands of years. The information was brought out in a paper in the February 28 issue …
There may be more to global warming than we thought. On top of the effect of human-made carbon emissions, natural changes in the warm ocean currents travelling to the icy north may be helping to heat up the entire northern hemisphere.
The sea-ice cover in the polar regions is one of the most expansive and seasonal geophysical parameters on the earth's surface. The presence or absence of sea-ice affects the atmosphere and the ocean, and therefore the climate in many ways. In this study we have used the Multi-frequency Scanning Microwave …
Atmospheric measurements show that the carbon dioxide (CO2) concentration in the atmosphere is currently '385 parts per million (ppm) and rising fast. But this value is a global average that tells us nothing about the regional distribution of greenhouse gas emissions. As the world embraces myriad mitigation strategies, it must …
The Arctic and northern subpolar regions are critical for climate change. Ice-albedo feedback amplifies warming the Arctic, and fluctuations of regional fresh water inflow into the Arctic Ocean modulate the deep ocean circulation and thus exert a strong global influence.
Sikkim Government is gearing up to send a high-level glaciologists' team to study the meltdown of the glaciers in Sikkim due to global warming and to find out remedies. The team led by Professor S I Hasnain and accompanied by officials and members of various project teams, would visit west …
The mountain pine beetle (Dendroctonus ponderosae Hopkins, Coleoptera: Curculionidae, Scolytinae) is a native insect of the pine forests of western North America, and its populations periodically erupt into large-scale outbreaks. During outbreaks, the resulting widespread tree mortality reduces forest carbon uptake and increases future emissions from the decay of killed …
One of the most dramatic perturbations to the Earth system during the past 100 million years was the rapid onset of Antarctic glaciation near the Eocene/Oligocene epoch boundary (34 million years ago). This climate transition was accompanied3 by a deepening of the calcite compensation depth
The international team of climate change scientists that produced an influential series of reports last year will be doing things a little differently in the future. Government delegates to the Intergovernmental Panel on Climate Change (IPCC), meeting in Budapest, Hungary, approved a plan for the 20-year, 100-nation enterprise that would …
