The early part of the last deglaciation is characterised by a ~40 ppm atmospheric CO2 rise occurring in two abrupt phases. The underlying mechanisms driving these increases remain a subject of intense debate. Here, we successfully reproduce changes in CO2, δ13C and Δ14C as recorded by paleo-records during Heinrich stadial 1 (HS1). We show that HS1 CO2 increase can be explained by enhanced Southern Ocean upwelling of carbon-rich Pacific deep and intermediate waters, resulting from intensified Southern Ocean convection and Southern Hemisphere (SH) westerlies.

World leaders and officials from over 100 nations, including India, top heads of UN agencies and multilateral financial institutions, scientists and activists gathered in this Vietnamese city on Su

There is a high correlation between urbanisation and the emission of greenhouse gases. Landfills and sewers in cities generate 15% of methane emissions; this sector offers immense possibilities for the mitigation of methane emissions in Asian megacities. Capturing methane by efficiency improvements in the working of both sewage treatment plants and sanitary landfills has co-benefits in terms of both public health as well as mitigating climate change.

There is growing evidence globally and in China of the gap between laboratory test findings and real-world carbon dioxide (CO2) emissions and fuel consumption.

Prime Minister Narendra Modi is a self-declared environment buff.

This working paper profiles seven of Australia’s largest emitting sectors, focusing on whether emissions are going up or down in each sector and the reasons for the observed trends. It also assesses what opportunities and policies each sector has to reduce emissions.

Several countries are developing nationally appropriate mitigation actions (NAMAs) in the livestock sector. Compared to research on emission factors, much less attention has been paid to understanding systems for collecting activity data on change in livestock management practices and animal performance.

A significant amount of the final energy demand of the manufacturing industry is in providing heating and cooling to processes and buildings. Renewable heating and cooling (RHC) technologies are one way to reduce the greenhouse gas (GHG) emissions associated with the generation of this heating and cooling demand.

In this report, a group of European Commission (EC) appointed experts recommend orientations for food and nutrition security research and innovation in the years to come.

A growing network of ice cores reveals the past 800,000 years of Antarctic climate and atmospheric composition. The data show tight links among greenhouse gases, aerosols and global climate on many timescales, demonstrate connections between Antarctica and distant locations, and reveal the extraordinary differences between the composition of our present atmosphere and its natural range of variability as revealed in the ice core record.

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