Transition Brockville archive

Tag : Arctic ice (33)

Sea ice extent sinks to record lows at both poles

NASA Global Climate Change / Maria-José Viñas / 22 March 2017

Arctic sea ice appears to have reached on March 7 a record low wintertime maximum extent, according to scientists at NASA and the NASA-supported National Snow and Ice Data Center (NSIDC) in Boulder, Colorado. And on the opposite side of the planet, on March 3 sea ice around Antarctica hit its lowest extent ever recorded by satellites at the end of summer in the Southern Hemisphere, a surprising turn of events after decades of moderate sea ice expansion.

On Feb. 13, the combined Arctic and Antarctic sea ice numbers were at their lowest point since satellites began to continuously measure sea ice in 1979. Total polar sea ice covered 6.26 million square miles (16.21 million square kilometers), which is 790,000 square miles (2 million square kilometers) less than the average global minimum extent for 1981-2010 – the equivalent of having lost a chunk of sea ice larger than Mexico.

[ FULL ARTICLE ]

Scientists marvel at ‘increasingly non-natural’ Arctic warmth

Washington Post / Jason Samenow / 02 February 2017

The Arctic is so warm and has been this warm for so long that scientists are struggling to explain it and are in disbelief. The climate of the Arctic is known to oscillate wildly, but scientists say this warmth is so extreme that humans surely have their hands in it and may well be changing how it operates.

Temperatures are far warmer than ever observed in modern records, and sea ice extent keeps setting record lows.

2016 was the warmest year on record in the Arctic, and 2017 has picked up right where it left off. “Arctic extreme (relative) warmth continues,” Ryan Maue, a meteorologist with WeatherBell Analytics, tweeted on Wednesday, referring to January’s temperatures.

Veteran Arctic climate scientists are stunned.

[ FULL ARTICLE ]

Arctic Report Card 2016

NOAA / 13 December 2016

Arctic Report Card: Update for 2016 – Tracking recent environmental changes, with 12 essays prepared by an international team of 61 scientists from 11 different countries and an independent peer-review organized by the Arctic Monitoring and Assessment Programme of the Arctic Council. See http://www.arctic.noaa.gov/Report-Card

Just what the heck is going on with our climate?

Science Museum of Virginia / Jeremy Hoffman / 12 December 2016

A recent presentation by climate scientist Jeremy Hoffman.

Arctic ice melt could trigger uncontrollable climate change

The Guardian / Fiona Harvey / 25 November 2016

arctic-sea-ice-2016-11Arctic scientists have warned that the increasingly rapid melting of the ice cap risks triggering 19 “tipping points” in the region that could have catastrophic consequences around the globe.

The Arctic Resilience Report found that the effects of Arctic warming could be felt as far away as the Indian Ocean, in a stark warning that changes in the region could cause uncontrollable climate change at a global level.

Temperatures in the Arctic are currently about 20C above what would be expected for the time of year, which scientists describe as “off the charts”. Sea ice is at the lowest extent ever recorded for the time of year.

“The warning signals are getting louder,” said Marcus Carson of the Stockholm Environment Institute and one of the lead authors of the report. “[These developments] also make the potential for triggering [tipping points] and feedback loops much larger.”

[ FULL ARTICLE ]

North Pole is an insane 36 degrees warmer than normal

Washington Post / Chris Mooney, Jason Samenow / 17 November 2016

temperature-anomalies-2016-11It’s polar night there now — the sun isn’t rising in much of the Arctic. That’s when the Arctic is supposed to get super-cold, when the sea ice that covers the vast Arctic Ocean is supposed to grow and thicken.

But in fall of 2016 — which has been a zany year for the region, with multiple records set for low levels of monthly sea ice — something is totally off. The Arctic is super-hot, even as a vast area of cold polar air has been displaced over Siberia.

At the same time, one of the key indicators of the state of the Arctic — the extent of sea ice covering the polar ocean — is at a record low. The ice is freezing up again, as it always does this time of year after reaching its September low, but it isn’t doing so as rapidly as usual.

[ FULL ARTICLE ]

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