New data from NASA and the National Oceanic and Atmospheric Administration suggest that January of 2016 was, for the globe, a truly extraordinary month.

The identification of properties that contribute to the persistence and resilience of ecosystems despite climate change constitutes a research priority of global relevance. Here the researchers present a novel, empirical approach to assess the relative sensitivity of ecosystems to climate variability, one property of resilience that builds on theoretical modelling work recognizing that systems closer to critical thresholds respond more sensitively to external perturbations.

Climate projections of sea ice retreat under anthropogenic climate change at the regional scale and in summer months other than September have largely not been evaluated. Information at this level of detail is vital for future planning of safe Arctic marine activities. Here the timing of when Arctic waters will be reliably ice free across Arctic regions from June to October is presented.

From rain, hail and soaring temperatures to a tornado - this year's weather had it all.

MONTREAL – Temperatures at the North Pole rose above the freezing point Wednesday, 20 degrees Celsius above the midwinter norm and the latest abnormality in a season of odd weather.

The north pole could be hotter than Chicago, Vienna or Istanbul on Wednesday due to the low pressure system that has brought tornados to Dallas and high winds and heavy rainfall to the UK.

The ferocious storm cell that spawned deadly tornadoes in the US over the weekend is expected to develop into what meteorologists call a "bomb cyclone", steering exceptionally warm air over the Arc

The Arctic Monitoring and Assessment Programme (AMAP), one of the six Working Groups of the Arctic Council, has released its assessment report on black carbon and ozone as Arctic climate forcers, which complements an earlier report on methane as Arctic climate forcer as part of AMAP's assessment on short-lived climate forcers (SLCFs).

Sea ice impacts most of the Arctic environment, from ocean circulation and marine ecosystems to animal migration and marine transportation. Sea ice has thinned and decreased in age over the observational record. Ice extent has decreased. Reduced ice cover has warmed the surface ocean, accelerated coastal erosion and impacted biological productivity. Declines in Arctic sea-ice extent cannot be explained by internal climate variability alone and can be attributed to anthropogenic effects.

The Arctic Monitoring and Assessment Programme (AMAP), one of the six Working Groups of the Arctic Council, has released its assessment report on methane as a climate forcer.

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