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 …

Yearbook of Global Climate Action 2017

At the High-Level closing of the Global Climate Action events, the first Yearbook of Climate Action was presented to UN Secretary-General António Guterres by Inia Seruiratu, Climate Champion and Fijian Minister for Agriculture, Rural and Maritime Development and National Disaster Management, and Salaheddine Mezouar, Minister for Foreign Affairs and Cooperation …

Climate science special report: fourth National Climate Assessment, Volume I

A new U.S. government report shows that climate is changing and that human activities will lead to many more changes. These changes will affect sea levels, drought frequency, severe precipitation, and more. The Climate Science Special Report (CSSR), created by a U.S. government organization that coordinates and integrates federal research …

Global nickel anomaly links Siberian Traps eruptions and the latest Permian mass extinction

Anomalous peaks of nickel abundance have been reported in Permian-Triassic boundary sections in China, Israel, Eastern Europe, Spitzbergen, and the Austrian Carnic Alps. New solution ICP-MS results of enhanced nickel from P-T boundary sections in Hungary, Japan, and Spiti, India suggest that the nickel anomalies at the end of the …

Anomalous blocking over Greenland preceded the 2013 extreme early melt of local sea ice

The Arctic marine environment is undergoing a transition from thick multi-year to first-year sea-ice cover with coincident lengthening of the melt season. Such changes are evident in the Baffin Bay-Davis Strait-Labrador Sea (BDL) region where melt onset has occurred ~8 days decade−1 earlier from 1979 to 2015. A series of …

Heat wave exposure in India in current, 1.5ºC, and 2.0ºC worlds

Heatwaves with large impacts have increased in the recent past and will continue to increase under future warming. However, the implication for population exposure to severe heatwaves remains unexplored. Here, we characterize maximum potential human exposure (without passive/active reduction measures) to severe heatwaves in India. We show that if the …

Strong gradients in forest sensitivity to climate change revealed by dynamics of forest fire cycles in the post Little Ice Age era

The lessngth of the fire cycle is a critical factor affecting the vegetation cover in boreal and temperate regions. However, its responses to climate change remain poorly understood. We re-analysed data from earlier studies of forest age structures at the landscape level, in order to map the evolution of regional …

The Mail's censure shows which media outlets are biased on climate change

Right-wing media outlets like Breitbart, Fox News, and Rush Limbaugh echoed the Mail’s “significantly misleading” and now censured climate story Back in February, the conservative UK tabloid Mail on Sunday ran an error-riddled piece by David Rose attacking Noaa climate scientists, who had published data and a paper showing that …

Change in the magnitude and mechanisms of global temperature variability with warming

Natural unforced variability in global mean surface air temperature (GMST) can mask or exaggerate human-caused global warming, and thus a complete understanding of this variability is highly desirable. Significant progress has been made in elucidating the magnitude and physical origins of present-day unforced GMST variability, but it has remained unclear …

Raising risk awareness in East Africa and India: Stakeholder perspectives of extreme weather event attribution

This report documents interviews with stakeholders conducted in India, Kenya and Ethiopia to begin to understand how they do, and could, use the science of extreme event attribution (EEA), so that any future analyses in the region can take account of user needs. This report first details other academic reports …

Minimal geological methane emissions during the Younger Dryas–Preboreal abrupt warming event

Methane (CH4) is a powerful greenhouse gas and plays a key part in global atmospheric chemistry. Natural geological emissions (fossil methane vented naturally from marine and terrestrial seeps and mud volcanoes) are thought to contribute around 52 teragrams of methane per year to the global methane source, about 10 per …

Climate change profile of Pakistan

This country profile provides a comprehensive overview of climate change science and policy in Pakistan, drawing insights from national and international literature. Catastrophic floods, droughts, and cyclones have plagued Pakistan in recent years. The 2010 flood killed 1,600 people and caused around $10 billion in damage. The 2015 Karachi heat …

Assessing ExxonMobil's climate change communications (1977–2014)

This paper assesses whether ExxonMobil Corporation has in the past misled the general public about climate change. We present an empirical document-by-document textual content analysis and comparison of 187 climate change communications from ExxonMobil, including peer-reviewed and non-peer-reviewed publications, internal company documents, and paid, editorial-style advertisements ('advertorials') in The New …

Numerical modelling of past retreat and future evolution of Chhota Shigri glacier in Western Indian Himalaya

The history of glacier length fluctuations serves as a reliable indicator of the past climate. In this paper, a numerical flowline model has been used to study the relationship between length variations of Chhota Shigri glacier and local climate since 1876. The simulated front positions of Chhota Shigri glacier are …

The role of Rossby-wave propagation in a North American extreme cold event

The Eliassen–Palm flux and Plumb wave activity flux are calculated using the European Centre for Medium-Range Weather Forecasts interim reanalysis daily dataset to determine the propagation of Rossby waves before a North American cold wave in January 2014. The results show that the upward wave activity fluxes mainly come from …

Building capacity for risk management in a changing climate: a synthesis report from the Raising Risk Awareness project

This report provides a summary of the Raising Risk Awareness project’s results and learning. In summarising both the project’s activities and stakeholders’ responses, this report may prove useful to scientists, development agencies and civil society-based organisations who wish to build on this foundational work in the future. The Raising Risk …

Evidence for ice-ocean albedo feedback in the Arctic Ocean shifting to a seasonal ice zone

Ice-albedo feedback due to the albedo contrast between water and ice is a major factor in seasonal sea ice retreat, and has received increasing attention with the Arctic Ocean shifting to a seasonal ice cover. However, quantitative evaluation of such feedbacks is still insufficient. Here we provide quantitative evidence that …

Increased light, moderate, and severe clear-air turbulence in response to climate change

Anthropogenic climate change is expected to strengthen the vertical wind shears at aircraft cruising altitudes within the atmospheric jet streams. Such a strengthening would increase the prevalence of the shear instabilities that generate clear-air turbulence. Climate modelling studies have indicated that the amount of moderate-or-greater clear-air turbulence on transatlantic flight …

Raising risk awareness: using climate science for disaster risk management

This policy brief concludes that, from the climate science perspective, results show the 2016-17 drought is less severe than the 2010-11 drought in Lamu, while in Marsabit they are comparable. In general, the return time of the event over the regions analysed was low, meaning that this kind of drought …

Climate change over India: an interim report

This Interim Report on Climate Change over India prepared by the Centre for Climate Change Research (CCCR) in the Indian Institute of Tropical Meteorology (IITM) Pune, is intended to provide a brief overview of (a) Updated assessment of observed climate change over India (b) Future climate projections over India (c) …

In the observational record half a degree matters

Discriminating the climate impacts of half-degree warming increments is high on the post-Paris science agenda. Here the researchers argue that evidence from the observational record provides useful guidance for such assessments.

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