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Categories: Geoscience: Geography, Paleontology: Climate

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Biology: Botany Ecology: Endangered Species Ecology: Invasive Species Paleontology: Climate Paleontology: Fossils Paleontology: General
Published

Professor unearths the ancient fossil plant history of Burnaby Mountain      (via sciencedaily.com)     Original source 

New research led by a paleobotanist provides clues about what plants existed in the Burnaby Mountain area (British Columbia, Canada) 40 million years ago during the late Eocene, when the climate was much warmer than it is today.

Environmental: Ecosystems Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Severe Weather
Published

Shift to 'flash droughts' as climate warms      (via sciencedaily.com)     Original source 

'Flash droughts' have become more frequent due to human-caused climate change and this trend is predicted to accelerate in a warmer future, according to new research.

Environmental: General Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography Geoscience: Severe Weather
Published

Predictive power of climate models may be masked by volcanoes      (via sciencedaily.com)     Original source 

Simulated volcanic eruptions may be blowing up our ability to predict near-term climate, according to a new study.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geography Geoscience: Geology
Published

Critical observations of sinking coasts      (via sciencedaily.com)     Original source 

Using satellite-obtained data from 2007-21, researchers mapped the entire East Coast to demonstrate how the inclusion of land subsidence reveals many areas to be more vulnerable to floods and erosion than previously thought.

Environmental: Ecosystems Environmental: Water Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography
Published

World's biggest cumulative logjam, newly mapped in the Arctic, stores 3.4 million tons of carbon      (via sciencedaily.com)     Original source 

Throughout the Arctic, fallen trees make their way from forests to the ocean by way of rivers. Those logs can stack up as the river twists and turns, resulting in long-term carbon storage. A new study has mapped the largest known woody deposit, covering 51 square kilometers (20 square miles) of the Mackenzie River Delta in Nunavut, Canada, and calculated that the logs store about 3.4 million tons (about 3.1 million metric tons) of carbon.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography
Published

As rising temperatures affect Alaskan rivers, effects ripple through Indigenous communities      (via sciencedaily.com)     Original source 

Six decades of river gage data gathered from nine rivers in Alaska highlight the cumulative and consequential impacts of climate change for local communities and ecosystems in the Arctic.

Archaeology: General Environmental: Water Geoscience: Earth Science Geoscience: Geology Geoscience: Oceanography Geoscience: Volcanoes Paleontology: Climate
Published

Study re-evaluates hazards and climate impacts of massive underwater volcanic eruptions      (via sciencedaily.com)     Original source 

Material left on the seafloor by bronze-age underwater volcanic eruptions is helping researchers better understand the size, hazards and climate impact of their parent eruptions, according to new research.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Earthquakes Geoscience: Environmental Issues Geoscience: Geography Geoscience: Geology Geoscience: Oceanography Offbeat: Earth and Climate Offbeat: General
Published

Warm liquid spewing from Oregon seafloor comes from Cascadia fault, could offer clues to earthquake hazards      (via sciencedaily.com)     Original source 

Oceanographers discovered warm, chemically distinct liquid shooting up from the seafloor about 50 miles off Newport. They named the unique underwater spring 'Pythia's Oasis.' Observations suggest the spring is sourced from water 2.5 miles beneath the seafloor at the plate boundary, regulating stress on the offshore subduction zone fault.

Environmental: General Geoscience: Environmental Issues Geoscience: Geography Offbeat: Earth and Climate Offbeat: General
Published

Spike in major league home runs tied to climate change      (via sciencedaily.com)     Original source 

A new study identifies the influence of climate change in the greater number of home runs in major league baseball in recent years. The researchers found that more than 500 home runs since 2010 can be attributed to warmer, thinner air caused by global warming, and that rising temperatures could account for 10% or more of home runs by 2100 if greenhouse gas emissions continue unabated. The researchers examined how the average number of home runs per year could rise for each major league ballpark with every 1-degree Celsius increase in the global average temperature.

Energy: Fossil Fuels Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography
Published

Moving towards 3 degrees of warming -- the phasing out of coal is too slow      (via sciencedaily.com)     Original source 

The use of coal power is not decreasing fast enough. The Paris Agreement's target of a maximum of 2 degrees of warming appear to be missed, and the world is moving towards a temperature increase of 2.5 -- 3 degrees. At the same time it is feasible to avoid higher warming.

Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Severe Weather Paleontology: Climate
Published

Researchers correlate Arctic warming to extreme winter weather in midlatitude and its future      (via sciencedaily.com)     Original source 

A warmer Arctic has been linked to extreme winter weather in the midlatitude regions. But, it is not clear how global warming affects this link. In a new study, researchers show, using weather data and climate models, that while the 'Warm Arctic-Cold Continent' pattern will continue as the climate continues to warm, Arctic warming will become a less reliable predictor of extreme winter weather in the future.

Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography Paleontology: Climate Paleontology: General
Published

Ice sheets can collapse faster than previously thought possible      (via sciencedaily.com)     Original source 

Ice sheets can retreat up to 600 meters a day during periods of climate warming, 20 times faster than the highest rate of retreat previously measured. An international team of researchers used high-resolution imagery of the seafloor to reveal just how quickly a former ice sheet that extended from Norway retreated at the end of the last Ice Age, about 20,000 years ago.

Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Paleontology: Climate
Published

The unexpected contribution of medieval monks to volcanology      (via sciencedaily.com)     Original source 

By observing the night sky, medieval monks unwittingly recorded some of history's largest volcanic eruptions. An international team of researchers drew on readings of 12th and 13th century European and Middle Eastern chronicles, along with ice core and tree ring data, to accurately date some of the biggest volcanic eruptions the world has ever seen. Their results uncover new information about one of the most volcanically active periods in Earth's history, which some think helped to trigger the Little Ice Age, a long interval of cooling that saw the advance of European glaciers.

Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography
Published

Civil engineers use public satellite images to study why the Jagersfontein dam failed      (via sciencedaily.com)     Original source 

Study by civil engineers finds that the history of the Jagersfontein dam deviates from best engineering practice.

Biology: Biochemistry Biology: Cell Biology Biology: Evolutionary Biology: General Biology: Genetics Biology: Marine Geoscience: Geography
Published

A cold-specialized icefish species underwent major genetic changes as it migrated to temperate waters      (via sciencedaily.com)     Original source 

Biologists have explored the genetic mechanisms underlying the transition from freezing Antarctic waters to more temperature waters by Antarctic Notothenioid fish.

Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Severe Weather
Published

Preventing urban flooding in the face of climate change      (via sciencedaily.com)     Original source 

Planners have come up with many innovative ways to prevent flooding caused by heavy downpours -- from planting rain gardens to installing green roofs. But in many cases, nothing works quite as well as a simple hole in the ground -- a detention basin.

Environmental: Ecosystems Environmental: General Geoscience: Environmental Issues Geoscience: Geography
Published

Legacy industrial contamination in the Arctic permafrost      (via sciencedaily.com)     Original source 

A previously underestimated risk lurks in the frozen soil of the Arctic. When the ground thaws and becomes unstable in response to climate change, it can lead to the collapse of industrial infrastructure, and in turn to the increased release of pollutants. Moreover, contaminations already present will be able to more easily spread throughout ecosystems. According to new findings, there are at least 13,000 to 20,000 contaminated sites in the Arctic that could pose a serious risk in the future.

Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography
Published

Limiting warming to 2°C may avoid 80% of heat-related deaths in Middle East and North Africa      (via sciencedaily.com)     Original source 

Over 80% of predicted heat-related deaths in the Middle East and North Africa (MENA) by the end of the century could be prevented if global warming is limited to 2°C, according to a modelling study.