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Sea level will rise faster than previously thought

Science Daily - Tue, 02/02/2021 - 15:45
There are two main elements to observe when assessing sea level rise. One is the loss of the ice on land and the other is that the sea will expand as it gets warmer. Researchers have constructed a new method of quantifying just how fast the sea will react to warming. Former predictions of sea level have been too conservative, so the sea will likely rise more and faster than previously believed.

Sea ice kept oxygen from reaching deep ocean during last ice age

Science Daily - Tue, 02/02/2021 - 15:44
Extensive sea ice covered the world's oceans during the last ice age, which prevented oxygen from penetrating into the deep ocean waters, complicating the relationship between oxygen and carbon.

Geologists produce new timeline of Earth's Paleozoic climate changes

Science Daily - Mon, 02/01/2021 - 14:54
Geologists have produced a new timeline of Earth's Paleozoic climate changes. The record shows ancient temperature variations coinciding with shifts in planet's biodiversity.

Antarctica's ice melt isn't consistent, new analysis shows

Science Daily - Mon, 02/01/2021 - 10:59
Antarctic ice is melting, contributing massive amounts of water to the world's seas and causing them to rise - but that melt is not as linear and consistent as scientists previously thought, a new analysis of 20 years' worth of satellite data indicates.

Arctic warming and diminishing sea ice are influencing the atmosphere

Science Daily - Fri, 01/29/2021 - 10:09
Researchers have resolved for the first time, how the environment affects the formation of nanoparticles in the Arctic. The results give additional insight into the future of melting sea ice and the Arctic atmosphere. Until recent studies, the molecular processes of particle formation in the high Arctic remained a mystery.

Past river activity in northern Africa reveals multiple Sahara greenings

Science Daily - Fri, 01/29/2021 - 10:09
The analysis of sediment cores from the Mediterranean Sea combined with Earth system models tells the story of major environmental changes in North Africa over the last 160,000 years.

635 million-year-old fungi-like microfossil that bailed us out of an ice age discovered

Science Daily - Thu, 01/28/2021 - 08:11
A team of scientists has discovered the remains of a fungi-like microfossil that emerged at the end of an ice age some 635 million years ago.

Newly discovered fossil, likely subaqueous insect

Science Daily - Wed, 01/27/2021 - 08:32
A newly discovered trace fossil of an ancient burrow has been discovered. The fossil has an important role to play in gauging how salty ancient bodies of water were, putting together a clearer picture of our planet's past.

Increasing ocean temperature threatens Greenland's ice sheet

Science Daily - Mon, 01/25/2021 - 18:18
Scientists have for the first time quantified how warming coastal waters are impacting individual glaciers in Greenland's fjords. Their work can help climate scientists better predict global sea level rise from the increased melting.

Climate change in antiquity: Mass emigration due to water scarcity

Science Daily - Mon, 01/25/2021 - 10:31
The absence of monsoon rains at the source of the Nile was the cause of migrations and the demise of entire settlements in the late Roman province of Egypt. This demographic development has been compared with environmental data for the first time by professor of ancient history, leading to a discovery of climate change and its consequences.

Global ice loss increases at record rate

Science Daily - Mon, 01/25/2021 - 08:43
The rate at which ice is disappearing across the planet is speeding up, according to new research. And the findings also reveal that the Earth lost 28 trillion tons of ice between 1994 and 2017 - equivalent to a sheet of ice 100 meters thick covering the whole of the UK.

Microbes fuelled by wind-blown mineral dust melt the Greenland ice sheet

Science Daily - Mon, 01/25/2021 - 08:43
Scientists have identified a key nutrient source used by algae living on melting ice surfaces linked to rising sea levels. They discovered that phosphorus containing minerals may be driving ever-larger algal blooms on the Greenland Ice Sheet.

Paleoclimate study of precipitation and sea ice in Arctic Alaska

Science Daily - Mon, 01/25/2021 - 08:43
A new study in Arctic Alaska has investigated sea ice dynamics and their impact on circulation and precipitation patterns in Arctic Alaska on a long-term basis.

Climate and carbon cycle trends of the past 50 million years reconciled

Science Daily - Fri, 01/22/2021 - 13:06
Oceanographers fully reconciled climate and carbon cycle trends of the past 50 million years -- solving a controversy debated in the scientific literature for decades.

Geoscientists reconstruct 6.5 million years of sea level stands in the Western Mediterranean

Science Daily - Fri, 01/22/2021 - 07:50
The geological features in caves from Mallorca provide scientific insights for understanding modern-day sea level changes.

Rocks show Mars once felt like Iceland

Science Daily - Thu, 01/21/2021 - 12:19
A comparison of chemical and climate weathering of sedimentary rock in Mars' Gale Crater indicate the region's mean temperature billions of years ago was akin to current conditions on Iceland.

Antarctica: The ocean cools at the surface but warms up at depth

Science Daily - Thu, 01/21/2021 - 12:18
Scientists have concluded that the slight cooling observed at the surface of the Southern Ocean hides a rapid and marked warming of the waters, to a depth of up to 800 meters. These results were obtained thanks to unique data acquired over the past 25 years.

Scientists discover how the potentially oldest coral reefs in the Mediterranean developed

Science Daily - Thu, 01/21/2021 - 12:17
A new study brings unprecedented insights into the environmental constraints and climatic events that controlled the formation of the potentially oldest coral reefs in the Mediterranean.

2020 tied for warmest year on record, NASA analysis shows

Science Daily - Fri, 01/15/2021 - 09:30
Earth's global average surface temperature in 2020 tied with 2016 as the warmest year on record, according to an analysis by NASA.

Greenland melting likely increased by bacteria in sediment

Science Daily - Thu, 01/14/2021 - 15:38
Bacteria are likely triggering greater melting on the Greenland ice sheet, possibly increasing the island's contribution to sea-level rise, according to scientists. That's because the microbes cause sunlight-absorbing sediment to clump together and accumulate in the meltwater streams, according to new study. The findings can be incorporated in climate models, leading to more accurate predictions of melting, scientists say.

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