Over the past 40,000 years, ice sheets thousands of kilometres apart have influenced one another through sea level changes, according to research published today in Nature. New modelling of ice sheet changes during the most recent glacial cycle by a McGill-led team offers a clearer idea of the mechanisms that drive change than had previously existed and explains newly available geological records. The study demonstrates, for the first time, that during this period, changes in the Antarctic ice sheet were driven by the melting ice sheets in the Northern Hemisphere.
The transmission of specific infectious diseases have been altered by processes linked to climatic and environmental anomalies. An increase in infectious outbreaks is expected to be seen in mild climates due to global warming, and the alterations in climate patterns, such as El Niño, are modifying the presence, density, strength and dynamics of transmission of many viruses and pathogens.
Over the past decade, the climate change research community developed a scenario framework that combines alternative futures of climate and society to facilitate integrated research and consistent assessment to inform policy. An international team of researchers assessed how well this framework is working and what challenges it faces.
A recent study showed how, contrary to encroachment by the invasive alien tree species Prosopis julifora (referred to as “Mathenge” in Kenya or “Promi” in Baringo), the revival of grasslands in tropical semi-arid areas can alleviate the effects of climate change as well as restore important benefits typically provided by healthy grasslands for agro-pastoralist and pastoralist communities.
Weather systems responsible for transporting moisture from the tropics to temperate regions in the Southern Hemisphere have been gradually shifting toward the South Pole for the past 40 years, a trend which could lead to increased rates of ice melt in Antarctica, according to new research.
To do the right thing at the right time, organisms need to glean cues from their environment. With ongoing climate change, the timing of these cues, like the accumulation of warm days, is rapidly shifting.
An international consortium of scientists has created the first-ever common framework for increasing comparability of research findings on coral bleaching.
Forests can help mitigate climate change, by taking in carbon dioxide during photosynthesis and storing it in their biomass (tree trunks, roots, etc.). In fact, forests currently take in around 25-30% of our human-generated carbon dioxide (CO2) emissions.
The impact of sea surface temperature variations in the tropical Pacific on global climate has long been recognized. For instance, the episodic warming of the tropical Pacific during El Niño events causes melt of sea ice in far-reaching parts of the Southern Ocean via its effect on the global atmospheric circulation.
The United Nations recently released a new report projecting future coral reef bleaching globally. The lead author of the report, Ruben van Hooidonk, is a scientist with NOAA's Cooperative Institute of Marine and Atmospheric Studies based at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science. Results highlights from the report include:
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