Tag Archives: melting ice sheets

How Earth’s Orbit Affected Ice Sheets Millions of Years Ago

temperature difference between the two interglacial periods
Temperature difference between the two interglacial periods, showing the opposite differences in surface temperatures over Greenland and Antarctica. Credit: Caroline Prescott

A new study of the late Pliocene era could help scientists predict future sea level rise

November 22, 2017 — When Earth’s atmosphere warms, the vast sheets of ice over Antarctica and Greenland melt. This melting, in addition to the thermal expansion of water, leads to rising sea levels. Although it’s clear that seas are rising at an increasing rate, Continue reading How Earth’s Orbit Affected Ice Sheets Millions of Years Ago

Sea levels to rise 1.3m unless coal power ends by 2050, report says

the extra contribution to sea level rise from antarctica will not kick in if warming is kept at less than 1.9c above preindustrial levels
The extra contribution to sea level rise from Antarctica will not kick in if warming is kept at less than 1.9C above preindustrial levels, the researchers found. Photograph: IceBridge/Nasa

University of Melbourne paper combines latest understanding on Antarctica and current emissions projection scenarios

October 27, 2017 — Coastal cities around the world could be devastated by 1.3m of sea level rise this century unless coal-generated electricity is virtually eliminated by 2050, according to a Continue reading Sea levels to rise 1.3m unless coal power ends by 2050, report says

What happened next to the giant Larsen C iceberg

a68 iceberg
View of the A68 iceberg on the 30 July 2017, taken from a European Copernicus Sentinel-1 satellite image. Photograph: A. Fleming, British Antarctic Survey.

Scientists have revealed exactly how the trillion-tonne A68 iceberg broke free of the Antarctic ice shelf last month – and say it has spawned smaller icebergs

August 2, 2017 — The fate of the giant iceberg that broke free from Antarctica’s Larsen C ice shelf last month has been revealed. Continue reading What happened next to the giant Larsen C iceberg

Iceberg twice size of Luxembourg breaks off Antarctic ice shelf

larsen c ice shelf
NASA handout photo dated 10/11/16 showing a rift in the Larsen C Ice Shelf in Antarctica, as scientists have said that an iceberg a quarter the size of Wales is poised to break off from it. Photograph: NASA/John Sonntag/PA

Satellite data confirms ‘calving’ of trillion-tonne, 5,800 sq km iceberg from the Larsen C ice shelf, dramatically altering the landscape

July 12, 2017 — A giant iceberg twice the size of Luxembourg has broken off an ice shelf on the Antarctic peninsula and is now adrift in the Weddell Sea. Continue reading Iceberg twice size of Luxembourg breaks off Antarctic ice shelf

Hopes of mild climate change dashed by new research

dried up bed of a river
The dried up bed of the river Po in northern Italy due to an exceptional drought, 23 June 2017. Photograph: Miguel Medina/AFP/Getty Images

Planet could heat up far more than hoped as new work shows temperature rises measured over recent decades don’t fully reflect global warming already in the pipeline

July 5, 2017 — Hopes that the world’s huge carbon emissions might not drive temperatures up to dangerous levels have been dashed by new research. Continue reading Hopes of mild climate change dashed by new research

Explainer: How much did climate change ‘cost’ in the 20th century

agricultural irrigation
Water control gate on an agricultural irrigation ditch in California Credit: Woodkern/iStock/Getty Images

From heatwaves to hurricanes, working out the dollar cost of climate change is a tough task. Often used by policymakers to weigh up the costs and benefits of tackling rising emissions, the topic is not without controversy. A recent study suggesting that human-caused climate change brought benefits in the 20th century offers a good starting point to explore a few of the issues that surround this fraught, complex topic.

March 1, 2017 — The research, published in the journal Public Library of Science, claims the world has experienced a “significant drop” in estimated climate impacts “since the late 1990s” and that Continue reading Explainer: How much did climate change ‘cost’ in the 20th century