Välismaa uudised

Major amounts of Saharan dust expected across western Europe over the weekend

Severe Weather Europe - 25. Mai 2018 - 20:35
A new round of Saharan dust will be pushed across western and southwestern Europe this weekend. Major amounts of Saharan dust are expected over Spain and France and to a lesser extent Belgium and southern UK. Strong southerly warm air advection has set up ahead of the cutoff low located over SW Iberian peninsula. Very warm air loaded with Saharan dust is being pushed across the western Mediterranean into western Europe. Expect dusty skies and deposition of the dust with rain from showers and thunderstorms expected across the region. See maps with details below. Dust load. Maps: University of Athens, SKIRON model.
Kategooriad: Välismaa uudised

New theory finds 'traffic jams' in jet stream cause abnormal weather patterns

ScienceDaily - 24. Mai 2018 - 21:16
A study offers an explanation for a mysterious and sometimes deadly weather pattern in which the jet stream, the global air currents that circle the Earth, stalls out over a region. Much like highways, the jet stream has a capacity, researchers said, and when it's exceeded, blockages form that are remarkably similar to traffic jams -- and climate forecasters can use the same math to model them both.
Kategooriad: Välismaa uudised

Some desert creatures may be able to cope with climate change better than expected

ScienceDaily - 24. Mai 2018 - 21:15
Ecologists have no doubt that climate change will affect the earth's animals and plants. But how exactly? This is often hard to predict. There are already indications that some species are shifting their distribution range. But it is much less clear how individual animals and populations are responding to the changes. Scientists have been studying nocturnal desert geckos to see how they are adapting to climatic changes.
Kategooriad: Välismaa uudised

Impressive supercell show in New Mexico, May 23, 2018

Severe Weather Europe - 24. Mai 2018 - 19:11
A look across the Pond: it has been a pretty dismal storm season in the US so far. By May 23 NOAA Storm Prediction Center has confirmed reports of 310 tornadoes, while during an average year the expected number would be about 518. Nevertheless, storm chasers in New Mexico were treated to a beautiful show near Picacho: a beautifully structured supercell, complete with a tornado. Other supercells were also reported in the area. Check out the photos and videos below. Picacho New Mexico Tornado from Ryan Shepard on Vimeo.
Kategooriad: Välismaa uudised

Giant clams tell the story of past typhoons

ScienceDaily - 24. Mai 2018 - 17:40
A highly precise method to determine past typhoon occurrences from giant clam shells has been developed, with the hope of using this method to predict future cyclone activity.
Kategooriad: Välismaa uudised

Floridians could far far more frequent, intense Heatwaves

ScienceDaily - 23. Mai 2018 - 16:12
By the late 21st century, if atmospheric greenhouse gas concentrations reach worst-case projections, Floridians could experience summer heatwaves three times more frequently, and each heatwave could last six times longer and be much hotter than at present, according to new research.
Kategooriad: Välismaa uudised

Weather outlook across Europe over the next 7 days

Severe Weather Europe - 22. Mai 2018 - 15:54
The next 7 days or so will be characterized by the buildup of a very strong anticyclone over the northern half of Europe and more unsettled, but generally very warm weather over most of the southern half of Europe. Temperatures will definitely feel a lot like summer just before the meteorological summer begins on June 1. Much of southern and southwestern, to a lesser extent central and eastern Europe are under the influence of several broad upper lows. In particular a broad, but rather shallow upper low is located over the central Mediterranean, bringing unsettled weather with showers and thunderstorms to the region. A deep upper low is located over the Atlantic west of the Iberian peninsula. As the week
Kategooriad: Välismaa uudised

Hurricanes: Stronger, slower, wetter in the future?

ScienceDaily - 21. Mai 2018 - 20:15
Scientists have developed a detailed analysis of how 22 recent hurricanes would be different if they formed under the conditions predicted for the late 21st century.
Kategooriad: Välismaa uudised

Monitoring of tropical trees in face of climate change

ScienceDaily - 17. Mai 2018 - 17:23
Experts have challenged the principle that tropical ecosystems are aseasonal -- after discovering regular cycles in fruiting, flowering and leafing in such climates.
Kategooriad: Välismaa uudised

Critically endangered South American forests were planted by ancient peoples

ScienceDaily - 17. Mai 2018 - 15:18
Critically endangered South American forests thought to be the result of climate change were actually spread by ancient communities, archaeologists have found.
Kategooriad: Välismaa uudised

European wind energy generation potential in a 1.5 degree C warmer world

ScienceDaily - 17. Mai 2018 - 5:14
The UK and large parts of northern Europe could become windier if global temperatures reach 1.5 degrees C above pre-industrial levels, according to a new study.
Kategooriad: Välismaa uudised

Small birds almost overheat while feeding their young

ScienceDaily - 16. Mai 2018 - 17:14
For decades, researchers have thought that access to food determined the brood size of birds. Now, biologists have discovered a completely new explanation: the body temperature of small birds can increase by more than 4°C to exceed 45°C when they are feeding their young. Larger broods would require more work, resulting in even higher body temperatures -- something the birds would probably not survive.
Kategooriad: Välismaa uudised

Traditional knowledge sheds light on changing East Greenland climate and polar bear hunt

ScienceDaily - 15. Mai 2018 - 20:15
Inuit polar bear hunters in East Greenland report changes to their subsistence hunting patterns as well as polar bear distribution and behavior due to decreasing sea ice and the introduction of hunting quotas in 2006. The study is the first in nearly 20 years to document traditional knowledge in East Greenland -- providing a valuable baseline for monitoring future changes and the polar bear population.
Kategooriad: Välismaa uudised

Tiny satellite's first global map of ice clouds

ScienceDaily - 15. Mai 2018 - 18:35
Looking at Earth from the International Space Station, astronauts see big, white clouds spreading across the planet. They cannot distinguish a gray rain cloud from a puffy white cloud. While satellites can see through many clouds and estimate the liquid precipitation they hold, they can't see the smaller ice particles that create enormous rain clouds.
Kategooriad: Välismaa uudised

New approach to global-warming projections could make regional estimates more precise

ScienceDaily - 15. Mai 2018 - 18:35
A new method for projecting how the temperature will respond to human impacts supports the outlook for substantial global warming throughout this century - but also indicates that, in many regions, warming patterns are likely to vary significantly from those estimated by widely used computer models.
Kategooriad: Välismaa uudised

Impact of weather and well-timed cultural management techniques on organic weed control

ScienceDaily - 15. Mai 2018 - 17:57
Weed management can be a tough challenge in organic cropping systems since growers don't have herbicides in their weed control arsenal. New research, though, shows that weather conditions and well-timed cultural management techniques can help fill the void by making crops more competitive.
Kategooriad: Välismaa uudised

Prized data, free and open to all

ScienceDaily - 15. Mai 2018 - 17:56
The first official account of the electronic Rothamsted Archive and what it offers, highlights how this unique historical repository of agricultural and meteorological data, which date back to 1843, is the result of some remarkable forward thinking.
Kategooriad: Välismaa uudised

Insurance industry dangerously unprepared for extreme weather, study finds

ScienceDaily - 15. Mai 2018 - 15:17
As historic flooding caused by climate change devastates communities in New Brunswick and British Columbia, new research reveals the insurance industry hasn't considered a changing climate in their practices, putting homeowners at financial risk.
Kategooriad: Välismaa uudised

Record-breaking ocean heat fueled Hurricane Harvey

ScienceDaily - 10. Mai 2018 - 20:30
Record-hot Gulf of Mexico waters supercharged Hurricane Harvey, fueling it with vast stores of water and setting the stage for devastating flooding after it stalled near Houston.
Kategooriad: Välismaa uudised

Bird migration strategies revealed

ScienceDaily - 8. Mai 2018 - 18:17
Using weather surveillance radar and citizen-science data, researchers are learning how migratory birds return to their breeding grounds in North America each spring with near-pinpoint accuracy.
Kategooriad: Välismaa uudised

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