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 …

Elevated weathering rates in the Rocky Mountains during the Early Eocene Climatic Optimum

Silicate weathering reactions remove carbon dioxide from the atmosphere and store it in carbonate minerals. During the high atmospheric carbon dioxide conditions of the Early Eocene Climatic Optimum, rates of chemical weathering, physical erosion and denudation in the western USA were equivalent to the highest recorded rates in the non-glacial …

Fjord insertion into continental margins driven by topographic steering of ice

Fjords line mountainous continental margins where icesheets and glaciers once stood. A two-dimensional model simulation suggests that fjords can be eroded within one million years, primarily in response to topographic ice steering and erosion from ice discharge. Subsequent glaciers that form on these landscapes are smaller and exhibit greater responses …

Marinoan meltdown

The termination of the Marinoan glaciation 635 million years ago is one of the most spectacular climate change events ever recorded. Methane release from equatorial permafrost might have triggered this global meltdown.

Globalized carbon emissions

An index that both climate scientists and policy makers anxiously keep track of is national emission rates of carbon dioxide, particularly for China, which has quickly been catching up with the US, hitherto the world's largest emitter of carbon dioxide. Despite all eff orts to the contrary, the rates for …

Drilling back in time

The recently published 800,000-year greenhouse-gas records from Dome C, Antarctica, show that old ice still bears surprises. As long as the records challenge our understanding, we should go back for more. (Editorial)

Weather and climate extremes in a changing climate

Changes in extreme weather and climate events have significant impacts and are among the most serious challenges to society in coping with a changing climate. This report provides current assessments of climate change science to inform public debate, policy, and operational decisions.

Garnaut climate change review: draft report

The Garnaut Climate Change Review was required to examine the impacts of climate change on the Australian economy, and to recommend medium- to long-term policies and policy frameworks to improve the prospects of sustainable prosperity. This draft report describes the methodology that the Review is applying to the: evaluation of …

Earth sunshade would not rewind the climate

Anyone clinging to the notion that we can wipe the slate clean of all our climate mistakes by deflecting the sun's rays with space mirrors is in for a disappointment. Dan Lunt of the University of Bristol, UK, and colleagues carried out the most detailed climate-modelling study to date on …

Atlantic cooling may be temporary respite

even though the earth is heating up there could be some relief, say recent studies. And we have to thank the Atlantic Ocean for this respite. Researchers at Leibniz Institute of Marine Sciences, Kiel, Germany, who studied the Atlantic say the ocean's natural phenomenon could slow down global warming. The …

No breaks for the Arctic

While studies indicate that global temperatures may not increase over the next decade, there is no respite for the Arctic sea ice, this year at least. There are very high chances, about 60 per cent, that the ice may shrink below the record minimum seen last year, says a press …

Anders Levermann on geopolitics of climate change

Professor at Germany's Potsdam Institute for Climate Impact Research, Anders Levermann's interests range from monsoon in India to glacier melt in Antarctica. He has contributed to the fourth assessment report of the Intergovernmental Panel on Climate Change released last year. He talks to Mario D'Souza on the geopolitics of climate …

A large discontinuity in the mid-twentieth century in observed global-mean surface temperature

Data sets used to monitor the Earth's climate indicate that the surface of the Earth warmed from 1910 to 1940, cooled slightly from 1940 to 1970, and then warmed markedly from 1970 onward. The weak cooling apparent in the middle part of the century has been interpreted in the context …

Snowball Earth termination by destabilization of equatorial permafrost methane clathrate

Authigenic carbonates within the Reynella Member of the glacial Elatina Formation occur in coastal cliff exposures of the Marinoan type section in South Australia and provide constraints on the magnitude and timing of methane influence during deglaciation.

Climate change: Hot questions of temperature bias

An unseen measurement bias has been identified in global records of sea surface temperature. The discrepancy will need correction, but will not affect conclusions about an overall warming trend.

Climate anomaly is an artefact

The humble bucket turns out to be at the bottom of a perplexing anomaly in the climate records for the twentieth century. The time series of land and ocean temperature measurements, begun in 1860, shows a strange cooling of about 0.3

Earth may hide a lethal carbon cache

Carbon is locked away down in the Earth's crust: in magma and old carbonate rocks buried by plate tectonics, in fossil fuels like coal and oil, and in ice lattices beneath the ocean bed. It has long been assumed that this carbon was largely cut off from the surface, and …

Hurricanes won't go wild, according to climate models

Two new model studies project a modest increase or even a decrease in the frequency and intensity of Atlantic tropical cyclones.

Marine calcifiers in a high-CO2 ocean

New results show that the response of marine organisms to ocean acidification varies both within and between species.

Triple oxygen isotope evidence for elevated CO2 levels after a Neoproterozoic glaciation

Understanding the composition of the atmosphere over geological time is critical to understanding the history of the Earth system, as the atmosphere is closely linked to the lithosphere, hydrosphere and biosphere. Although much of the history of the lithosphere and hydrosphere is contained in rock and mineral records, corresponding information …

NOAA chief backs bid for climate-change agency

The chief of the US National Oceanic and Atmospheric Administration (NOAA) has called for the creation of a National Climate Service to manage and disseminate information about global warming.

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