Showing 20 articles starting at article 461

< Previous 20 articles        Next 20 articles >

Categories: Ecology: Trees, Geoscience: Severe Weather

Return to the site home page

Biology: Botany Ecology: General Ecology: Invasive Species Ecology: Nature Ecology: Research Ecology: Trees Environmental: Ecosystems Environmental: General Geoscience: Environmental Issues Geoscience: Geography
Published

How the Amazon rainforest is likely to cope with the effect of future drought      (via sciencedaily.com)     Original source 

A major collaboration involving 80 scientists from Europe and South America has identified the regions of the Amazon rainforest where trees are most likely to face the greatest risk from drier conditions brought about by climate change. Based on the analysis, the scientists predict trees in the western and southern Amazon face the greatest risk of dying. They also warn that previous scientific investigations may have underestimated the impact of drought on the rainforest because those studies focused on the central-eastern part of the forest, which is the least vulnerable to drought.

Geoscience: Severe Weather
Published

120-year-old storm's secrets key to understanding weather risks      (via sciencedaily.com)     Original source 

The conversion of handwritten weather records into digital information will help weather better understand future weather risks.

Geoscience: Earth Science Geoscience: Severe Weather
Published

A more precise model of the Earth's ionosphere      (via sciencedaily.com)     Original source 

The ionosphere -- the region of geospace spanning from 60 to 1000 kilometers above the Earth -- impairs the propagation of radio signals from global navigation satellite systems (GNSS) with its electrically charged particles. This is a problem for the ever higher precision required by these systems -- both in research and for applications such as autonomous driving or precise orbit determination of satellites. Models of the ionosphere and its uneven, dynamic charge distribution can help correct the signals for ionospheric delays, which are one of the main error sources in GNSS applications. Researchers have presented a new model of the ionosphere, developed on the basis of neural networks and satellite measurement data from 19 years. In particular, it can reconstruct the topside ionosphere, the upper, electron-rich part of the ionosphere much more precisely than before. It is thus also an important basis for progress in ionospheric research, with applications in studies on the propagation of electromagnetic waves or for the analysis of certain space weather events, for example.

Biology: Botany Biology: General Ecology: Endangered Species Ecology: Extinction Ecology: General Ecology: Invasive Species Ecology: Nature Ecology: Research Ecology: Trees Environmental: Biodiversity Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Paleontology: Climate
Published

The diversity of present tree species is shaped by climate change in the last 21,000 years      (via sciencedaily.com)     Original source 

A new global survey of 1000 forest areas shows how climate change since the peak of the last ice age has had a major impact on the diversity and distribution of tree species we see today. The results can help us predict how ecosystems will react to future changes, thus having an impact on conservation management around the globe.

Biology: Zoology Ecology: Animals Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Severe Weather
Published

Temperature, drought influencing movement of Plains bison      (via sciencedaily.com)     Original source 

Temperature and severe drought can drive movement among herds of Plains bison, says a recent study. The team's GPS-backed data suggests that conserving the once-endangered species could depend on accounting for the climate extremes that Plains bison will likely encounter moving forward.

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

Scientists develop new way to measure wind      (via sciencedaily.com)     Original source 

Atmospheric scientists have developed an algorithm that uses data from water vapor movements to measure wind. This could help predict extreme events like hurricanes.

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

New look at climate data shows substantially wetter rain and snow days ahead      (via sciencedaily.com)     Original source 

A new look at climate data shows that, by the end of the century, the heaviest days of rain and snowfall across much of North America will likely release 20 to 30 percent more moisture than they do now. Much of the increased precipitation will occur in winter, potentially exacerbating flooding in regions such as the upper Midwest and the west coast. Researchers also found that heavy precipitation days historically experienced once in a century will become more frequent -- as often as once every 30 or 40 years in the Pacific Northwest and southeastern United States.

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.

Biology: Biochemistry Biology: Botany Biology: Microbiology Ecology: Endangered Species Ecology: General Ecology: Nature Ecology: Research Environmental: Ecosystems Environmental: General Geoscience: Environmental Issues Geoscience: Landslides Geoscience: Severe Weather
Published

Increased droughts are disrupting carbon-capturing soil microbes, concerning ecologists      (via sciencedaily.com)     Original source 

Soil stores more carbon than plants and the atmosphere combined, and soil microbes are largely responsible for putting it there. However, the increasing frequency and severity of drought, such as those that have been impacting California, could disrupt this delicate ecosystem. Microbial ecologists warn that soil health and future greenhouse gas levels could be impacted if soil microbes adapt to drought faster than plants do.

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

Stopping storms from creating dangerous urban geysers      (via sciencedaily.com)     Original source 

Researchers develop a computational model of stormwater piping to study storm geysers. They used this model to understand why storm geysers form, what conditions tend to make them worse, and what city planners can do to prevent them from occurring. The authors say the best cure for a storm geyser is bigger pipes; however, that advice is little help to cities with existing pipeline infrastructure. In these systems, the focus must be on minimizing the potential damage by reducing the height of the geysers, the volume of expelled water, or the resulting damage to the pipeline.

Chemistry: General Environmental: General Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geology Geoscience: Severe Weather Offbeat: Earth and Climate Offbeat: General Offbeat: Space Space: Astrophysics Space: Exploration Space: General Space: The Solar System
Published

Lightning strike creates phosphorus material      (via sciencedaily.com)     Original source 

A lightning strike in New Port Richey, Florida, led to a chemical reaction creating a new material that is transitional between space minerals and minerals found on Earth. High-energy events, such as lightning, can cause unique chemical reactions. In this instance, the result is a new material -- one that is transitional between space minerals and minerals found on Earth.

Biology: Biochemistry Biology: Botany Biology: General Ecology: Invasive Species Ecology: Nature Ecology: Trees Environmental: Biodiversity Environmental: Ecosystems Environmental: General Geoscience: Severe Weather
Published

Trees in areas prone to hurricanes have strong ability to survive even after severe damage      (via sciencedaily.com)     Original source 

The island of Dominica took a direct hit from Category 5 Hurricane Maria. Nine months afterward, researchers found that while 89% percent of trees located in nine previously documented forest stands were damaged, but only 10 percent had immediately died. The most common damage was stem snapping and major branch damage. The damage with the highest rates of mortality were uprooting and being crushed by a neighboring tree. Large individual trees and species with lower wood density were susceptible to snapping, uprooting and mortality. Those on steeper slopes were more prone to being crushed by neighboring trees.

Chemistry: Thermodynamics Energy: Technology Environmental: General Geoscience: Severe Weather
Published

Cities will need more resilient electricity networks to cope with extreme weather      (via sciencedaily.com)     Original source 

Dense urban areas amplify the effects of higher temperatures, due to the phenomenon of heat islands in cities. This makes cities more vulnerable to extreme climate events. Large investments in the electricity network will be necessary to cool us down during heatwaves and keep us warm during cold snaps, according to a new study.

Biology: Botany Ecology: Invasive Species Ecology: Nature Ecology: Trees Environmental: Ecosystems Environmental: General Geoscience: Environmental Issues
Published

US forests face an unclear future with climate change      (via sciencedaily.com)     Original source 

Climate change might compromise how permanently forests are able to store carbon and keep it out of the air. In a new study, researchers found that the regions most at risk to lose forest carbon through fire, climate stress or insect damage are those regions where many forest carbon offset projects have been set up. The authors assert that there's an urgent need to update these carbon offsets protocols and policies.

Biology: Biochemistry Ecology: Invasive Species Ecology: Nature Ecology: Trees Environmental: Ecosystems Environmental: General Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Severe Weather
Published

Gone for good? California's beetle-killed, carbon-storing pine forests may not come back      (via sciencedaily.com)     Original source 

Ponderosa pine forests in the Sierra Nevada that were wiped out by western pine beetles during the 2012-2015 megadrought won't recover to pre-drought densities, reducing an important storehouse for atmospheric carbon.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Severe Weather
Published

Underground water could be the solution to green heating and cooling      (via sciencedaily.com)     Original source 

About 12% of the total global energy demand comes from heating and cooling homes and businesses. A new study suggests that using underground water to maintain comfortable temperatures could reduce consumption of natural gas and electricity in this sector by 40% in the United States. The approach, called aquifer thermal energy storage (ATES), could also help prevent blackouts caused by high power demand during extreme weather events.

Biology: Biochemistry Biology: General Biology: Marine Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Severe Weather
Published

Coral skeletons influence reef recovery after bleaching      (via sciencedaily.com)     Original source 

Natural disasters can devastate a region, abruptly killing the species that form an ecosystem's structure. But how this transpires can influence recovery. While fires scorch the landscape to the ground, a heatwave leaves an army of wooden staves in its wake. Storm surges and coral bleaching do something similar underwater.

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.