The Arctic summer minimum drops far below anything previously observed
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September sea-ice extent falls to roughly 4.2 million square kilometres, far below the previous record and far below what the models of the day projected for that decade. The 2007 minimum is the point at which Arctic sea-ice decline stopped being a trend line and became an event, and it prompted a substantial re-examination of how the models handled ice.
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Evidence · 1
Timeline
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Connections · 3
- The lowest Arctic sea-ice extent in the satellite recordprecedes
- Sea Iceconcerns
- Arctic Oceanconcerns
Assembled narrative · 1
Assembled from 40 blocks · 1 evidence · 36 related
- Story
- September sea-ice extent falls to roughly 4.2 million square kilometres, far below the previous record and far below what the models of the day projected for that decade. The 2007 minimum is the point at which Arctic sea-ice decline stopped being a trend line and became an event, and it prompted a substantial re-examination of how the models handled ice.
- Knowledge
- Arctic Ocean
- Sea Ice
- The Arctic summer minimum drops far below anything previously observed
- The lowest Arctic sea-ice extent in the satellite record
- Connections
- The lowest Arctic sea-ice extent in the satellite record
- Sea Ice
- Arctic Ocean
- The Arctic summer minimum drops far below anything previously observed
- Arctic Ocean
- Sea Ice
- Arctic Amplification
- Polynya
- Arctic Amplification
- Antarctic Krill (Euphausia superba)
- Polar Bear (Ursus maritimus)
- Emperor Penguin (Aptenodytes forsteri)
- Halley Bay Emperor Penguin Colony
- The continuous satellite sea-ice record begins
- A long-term decline in krill density is linked to winter sea ice
- The Arctic summer minimum drops far below anything previously observed
- The lowest Arctic sea-ice extent in the satellite record
- The Halley Bay emperor colony fails and does not recover
- The emperor penguin is listed as threatened under the US Endangered Species Act
- Antarctic sea ice reaches a record low, a year after the previous one
- Antarctica
- Arctic Amplification
- Polar Bear (Ursus maritimus)
- Arctic Tern (Sterna paradisaea)
- Arctic Council
- Inuit
- The continuous satellite sea-ice record begins
- The Arctic summer minimum drops far below anything previously observed
- The lowest Arctic sea-ice extent in the satellite record
- Seven Arctic states pause participation in the Arctic Council
- Evidence
- A continuous, consistently processed record of sea-ice extent in both hemispheres exists from 1979, from which the Arctic September minima of 2007 (approximately 4.2 million km2) and 2012 (approximately 3.4 million km2) and the Antarctic February minima of 2022 and 2023 (the first below 2 million km2 in the record, and lower again the following year) are drawn. V55 VERIFICATION BASIS: nsidc.org was probed during production and refused by the network egress proxy, and the WebSearch budget was exhausted. EVERY NUMERIC VALUE IN THIS RECORD IS APPROXIMATE AND UNCHECKED, given to one or two significant figures for that reason. A curator must replace them with values read from the Sea Ice Index before publication.
Observed changes · 0
No public Signals are attached to this object. Signals show what changed and when it was observed — never a direction or a rank.
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