Atmosphere

Greenhouse Gas bulletin: the state of greenhouse gases in the atmosphere based on global observations through 2022

Greenhouse gas concentrations in the atmosphere hit new record highs in 2022, with no end in sight to the rising trend, according to this new report by the World Meteorological Organisation (WMO). This Bulletin represents the latest analysis of observations from the WMO GAW Programme. It shows globally averaged surface …

UN climate talks open amid ‘sobering’ typhoon

Nations launched a new round of talks on Monday for a 2015 deal to cut Earth-warming greenhouse gas emissions in the aftermath of a deadly Philippines typhoon the UN’s climate chief labelled “sobering”. The 12-day United Nations talks opened in Warsaw amid a slew of warnings about potentially disastrous warming …

‘Loss and damage’: Key agenda of Warsaw climate talks

It refers to demands of poorest countries that they must be compensated for inevitable losses caused by the existing level of greenhouse gas emissions, which any amount of reduction of future emissions will not stop. A day before the formal opening of the U.N. climate negotiations, delegates from more than …

Post Diwali, respiratory ailments up 20%

It isn’t just eye injuries, after Diwali hospitals and clinics in the city are also seeing a rise in the number of respiratory infections and allergy cases. City-based pulmonologists said that over the past two-three days such cases have gone up 10-20 per cent. “For the past two-three days I …

Antarctic ice may hold 1.5 mn years of climate history

Scientists have identified regions in Antarctica that could store information about Earth’s climate and greenhouse gases dating back to 1.5 million years, twice as old as ice core drilled to date. By studying the past climate, scientists can understand better how temperature responds to changes in greenhouse-gas concentrations in the …

The state of greenhouse gases in the atmosphere based on global observations through 2012

The World Meteorological Organization’s annual Greenhouse Gas Bulletin shows that between 1990 and 2012 there was a 32% increase in radiative forcing – the warming effect on our climate – because of carbon dioxide (CO2) and other heat-trapping long-lived gases such as methane and nitrous oxide. Carbon dioxide, mainly from …

Toxic gases emitted by firecrackers harmful for asthma patients: Experts

Inhaling the gaseous air pollutants along with other toxic gases emitted by firecrackers not only makes one cough, go breathless and feel irritation in the throat, it aggravates the chance of attack among asthma patients, says health experts. Firecrackers contain elements like copper, cadmium, sulphur, aluminium, barium and various other …

Oceans warming up 15 times faster than in past 10,000 years: Study

New research has found that the middle depths of the Pacific Ocean have warmed 15 times faster in the last 60 years than they did during apparent natural warming cycles in the previous 10,000 years. Published in the journal Science, the study supports the idea that oceans are taking up …

Natural solutions for Developing Countries

The report, summarising results from the ATMOsphere Technology Summit and global surveys gathering perspectives from emerging economies, is another clear step to strengthen shecco’s involvement in international project activities helping developing countries seize additional climate benefits from natural refrigerants and foams. The “GUIDE UNIDO - Natural Solutions for Developing Countries” …

Global-scale seasonally resolved black carbon vertical profiles over the Pacific

Black carbon (BC) aerosol loadings were measured during the High-performance Instrumented Airborne Platform for Environmental Research Pole-to-Pole Observations (HIPPO) campaign above the remote Pacific from 85°N to 67°S. Over 700 vertical profiles extending from near the surface to max ~14 km altitude were obtained with a single-particle soot photometer between …

Continuous measurement of GHGs in India

Continuous measurement of GHGs in India - A presentation by N.K. Indira, P.S. Swathi. B.C. Bhatt, Dorairaj, R. Kirubagaran and V.K. Gaur at the 4th National Research Conference on Climate Change, Indian Institute of Technology, Madras, October 26-27, 2013.

Robust twenty-first-century projections of El Niño and related precipitation variability

The El Niño–Southern Oscillation (ENSO) drives substantial variability in rainfall, severe weather, agricultural production, ecosystems and disease in many parts of the world. Given that further human-forced changes in the Earth’s climate system seem inevitable, the possibility exists that the character of ENSO and its impacts might change over the …

Climate Change 2013: the physical science basis - summary for policymakers

Read text of the Summary for Policymakers portion of the first volume of the IPCC's Fifth Assessment Report (AR5) "Climate Change 2013: The Physical Science Basis". The Working Group I contribution to the IPCC's Fifth Assessment Report (AR5) considers new evidence of climate change based on many independent scientific analyses …

HFC: A lesson on how companies make money to save the world

Industrialised countries should phase out HFC says Sunita Narain, Director-General, CSE in this presentation at CSE Annual South Asian Media Briefing Workshop on Climate Change, 2013 held from September 18-19, 2013. HFC: A lesson on how companies make money to save the world - Presentation by Sunita Narain, Director-General, CSE …

The message of the United Nations Secretary General on the 2013 International Day for the Preservation of the Ozone Layer, 16 September 2013

The message of the United Nations Secretary-General on the 2013 International Day for the Preservation of the Ozone Layer, 16 September 2013.

Vital Ozone Graphics: resource kit for journalists

"Vital Ozone Graphics – resource kit for journalists" is a joint publication of UNEP DTIE OzonAction and GRID-Arendal. It features 30+ new graphics explaining physical, technical, economic and political aspects of the disconcerting process of ozone destruction in the atmosphere and the human action that has been taken to stop …

Vital Ozone Graphics 2: climate link

This second edition of "Vital Ozone Graphics" includes details on the latest decisions taken by the Parties to the Montreal Protocol to accelerate the phase out of HCFCs and outlines the implications this has on the use of replacement chemicals. The Resource Kit also focuses on the linkages and interconnections …

Global warming rate less than predicted: new IPCC report

Questions being raised over urgency of situation but report affirms man-made climate change is reality The climate has not been warming over the past 15 years at rates predicted earlier, the U.N.’s Integrated Panel on Climate Change’s (IPCC) latest report, to be released September end, is going to say. The …

Overestimated global warming over the past 20 years

Recent observed global warming is significantly less than that simulated by climate models. This difference might be explained by some combination of errors in external forcing, model response and internal climate variability.

Potential for international offsets to provide a net decrease of GHG emissions

At COP 17 in Durban, the Parties called for new market mechanisms, and more broadly, “various approaches, including markets” to “achieve a net decrease and/or avoidance of greenhouse gas emissions”. This paper explores what a net decrease might mean in practice, how it might be achieved, and the potential scale …

Explaining extreme events of 2012 from a climate perspective

This new analysis published by the Bulletin of the American Meteorological Society links human-caused climate change to half of 2012′s extreme weather. Attribution of extreme events is a challenging science and one that is currently undergoing considerable evolution. In this paper are 19 analyses by 18 different research groups, often …

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