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Political upsets could stall coordinated international mitigation action, but emissions and investments over the next few years will have long-term consequences. Any delays to mitigation or cuts to renewable energy research by the US will likely render the 2 °C target unachievable if a global precedent is set.
A temperate grassland experiment shows that CO2 fertilization increases above-ground biomass most strongly under local average environmental conditions, but the effect is reduced or disappears under wetter, drier and/or hotter conditions.
A diverse range of approaches, including contributions based on national interest and local benefits of climate action, is needed to meet the goals of the Paris Agreement. Now, research considers how equitable approaches may play a role.
The El Niño/Southern Oscillation influences tropical cyclone variability. Under climate change, cyclones around Pacific island nations are projected to increase in frequency during El Niño events and decrease during La Niña events.
Increasing dry season length in central Panama reduced population growth rates and viability in nearly one-third of the 20 tropical bird species investigated. Such changes are projected to alter tropical bird community structure in protected areas.
Five equitable approaches to mitigation are investigated: the authors find that most developing countries are more ambitious than the average, whilst if developed nations and China adopted the average of the approaches the gap between INDCs and a 2 °C pathway would narrow.
Households’ carbon footprints often differ with wealth and level of consumption. This study shows the urban rich disproportionally contribute to the Chinese carbon footprint, whilst overall household footprints are growing with increased consumerism.
The decay of floating ice shelves around Antarctica speeds up ice flow from the continent and contributes to increased sea-level rise. Now, meltwater attributed to warm winds has been discovered on an East Antarctic ice shelf, suggesting greater vulnerability than previously thought.
Surface melt has been tied to the collapse of Antarctic Peninsula ice shelves. This study illustrates that warmer temperatures associated with katabatic winds drive similar processes in an East Antarctic ice shelf, highlighting vulnerability to disintegration.
Climate change is causing increases in extreme rainfall across the United States. This study uses observations and high-resolution modelling to show that rainfall changes related to rising temperatures depend on the available atmospheric moisture.
The built environment will play a key role in determining future emissions, so it is essential that low-carbon infrastructure and design are implemented.
Moderating the impacts of climate change is a global problem. Research now shows that cultural values determine whether personal environmental concerns actually lead to pro-environmental action.
An end-to-end comprehensive climate information system is needed to complement mitigation and adaptation as responses to the threat of human-induced climate change.