Välismaa uudised

Weather should remain predictable despite climate change

ScienceDaily - 22. Veebruar 2018 - 20:34
New research suggests that even as rising carbon dioxide levels in the atmosphere drive the climate toward warmer temperatures, the weather will remain predictable.
Kategooriad: Välismaa uudised

Distant tropical storms have ripple effects on weather close to home

ScienceDaily - 21. Veebruar 2018 - 0:03
Researchers report a breakthrough in making accurate predictions of weather weeks ahead. They've created an empirical model fed by careful analysis of 37 years of historical weather data. Their model centers on the relationship between two well-known global weather patterns: the Madden-Julian Oscillation and the quasi-biennial oscillation.
Kategooriad: Välismaa uudised

Warmer future for the Pacific Northwest if carbon dioxide levels rise, climate projections show

ScienceDaily - 20. Veebruar 2018 - 16:50
In the midst of an unseasonably warm winter in the Pacific Northwest, a comparison of four publicly available climate projections has shown broad agreement that the region will become considerably warmer in the next century if greenhouse gas concentrations in the atmosphere rise to the highest levels projected in the the Intergovernmental Panel on Climate Change (IPCC) 'business-as-usual' scenario.
Kategooriad: Välismaa uudised

Risk of extreme weather events higher if Paris Agreement goals aren't met

ScienceDaily - 14. Veebruar 2018 - 22:02
The Paris Agreement has aspirational goals of limiting temperature rise that won't be met by current commitments. That difference could make the world another degree warmer and considerably more prone to extreme weather.
Kategooriad: Välismaa uudised

Polar vortex defies climate change in the Southeast U.S.

ScienceDaily - 14. Veebruar 2018 - 1:35
Overwhelming scientific evidence has demonstrated that our planet is getting warmer due to climate change, yet parts of the eastern US are actually getting cooler. According to a new study, the location of this anomaly, known as the 'US warming hole,' is a moving target. During the winter and spring, the US warming hole sits over the Southeast, as the polar vortex allows arctic air to plunge into the region, resulting in persistently cooler temperatures.
Kategooriad: Välismaa uudised

Intensive agriculture influences US regional summer climate, study finds

ScienceDaily - 13. Veebruar 2018 - 19:32
Scientists agree that changes in land use such as deforestation, not just emissions of greenhouse gases, can play a significant role altering the world's climate systems. Now, a new study reveals how another type of land use, intensive agriculture, can impact regional climate.
Kategooriad: Välismaa uudised

Bats as barometer of climate change

ScienceDaily - 13. Veebruar 2018 - 2:09
Bats spend every night hard at work for local farmers, consuming over half of their own weight in insects, many of which are harmful agricultural pests, such as the noctuid moths, corn earworm and fall armyworm. And now they are arriving earlier in the season, and some of them are reluctant to leave. It seems the bats know more about climate change than we had realized.
Kategooriad: Välismaa uudised

Micro to macro mapping -- Observing past landscapes via remote-sensing

ScienceDaily - 8. Veebruar 2018 - 19:08
New multi-scale relief modelling algorithm helps archaeologists rediscover topographical features of the past.
Kategooriad: Välismaa uudised

Towards a better prediction of solar eruptions

ScienceDaily - 7. Veebruar 2018 - 21:03
Just one phenomenon may underlie all solar eruptions. Researchers have identified the presence of a confining 'cage' in which a magnetic rope forms, causing solar eruptions. It is the resistance of this cage to the attack of the rope that determines the power and type of the upcoming flare. This work has enabled the scientists to develop a model capable of predicting the maximum energy that can be released during a solar flare.
Kategooriad: Välismaa uudised

Pathway to give advanced notice for hailstorms

ScienceDaily - 30. Jaanuar 2018 - 19:37
A new study identifies a method for predicting the likelihood of damaging hailstorms in the United States -- up to three weeks in advance.
Kategooriad: Välismaa uudised

UK regional weather forecasts could be improved using jet stream data

ScienceDaily - 30. Jaanuar 2018 - 16:47
Weather forecasters could be able to better predict regional rainfall and temperatures by using North Atlantic jet stream data, according to new research. Climate scientists examined the relationship between changes in North Atlantic atmospheric circulation -- or jet stream -- and UK regional weather variations during summer and winter months over the past 65 years, and found that the jet stream changes were significantly associated with variations in regional rainfall and temperatures.
Kategooriad: Välismaa uudised

Mammals and birds could have best shot at surviving climate change 

ScienceDaily - 29. Jaanuar 2018 - 21:58
New research that analyzed more than 270 million years of data on animals shows that mammals and birds -- both warm-blooded animals -- may have a better chance of evolving and adapting to the Earth's rapidly changing climate than their cold-blooded peers, reptiles and amphibians.
Kategooriad: Välismaa uudised

Causes and consequences of the 2015 Wimberley floods in Texas

ScienceDaily - 29. Jaanuar 2018 - 15:58
A new study by civil and environmental engineers delves into the 2015 Wimberley, Texas floods that destroyed 350 homes and claimed 13 lives. Scientists researched the factors that led to the catastrophic flooding and shed light on new ways people in flood-prone areas can protect against future tragedies.
Kategooriad: Välismaa uudised

Tiny particles have outsize impact on storm clouds, precipitation

ScienceDaily - 25. Jaanuar 2018 - 21:09
Tiny particles fuel powerful storms and influence weather much more than has been appreciated, according to a new study. While scientists have known that aerosols may play an important role in shaping weather and climate, the new study shows that the smallest of particles have an outsize effect. The tiny pollutants -- long considered too small to have much impact on droplet formation -- are, in effect, diminutive downpour-makers.
Kategooriad: Välismaa uudised

Century of data shows sea-level rise shifting tides in Delaware, Chesapeake bays

ScienceDaily - 25. Jaanuar 2018 - 0:24
The warming climate is expected to affect coastal regions worldwide as glaciers and ice sheets melt, raising sea level globally. For the first time, an international team has found evidence of how sea-level rise already is affecting high and low tides in both the Chesapeake and Delaware bays, two large estuaries of the eastern United States.
Kategooriad: Välismaa uudised

Record jump in 2014-2016 global temperatures largest since 1900

ScienceDaily - 24. Jaanuar 2018 - 19:32
Global surface temperatures surged by a record amount from 2014 to 2016, boosting the total amount of warming since the start of the last century by more than 25 percent in just three years, according to a new University of Arizona-led paper. The research is the first to quantify the record temperature spike of an additional 0.43 degrees F (0.24 C) in just three years and to identify the fundamental reason for the jump.
Kategooriad: Välismaa uudised

Weather patterns, farm income, other factors, may be influencing opioid crisis

ScienceDaily - 24. Jaanuar 2018 - 19:31
The overprescribing of opioid-based painkillers may be the main driver of the increased abuse of opioids in rural America, but economists say that other factors, including declining farm income, extreme weather and other natural disasters, may affect a crisis that is killing thousands of citizens and costing the country billions of dollars.
Kategooriad: Välismaa uudised

Better predicting mountains' flora and fauna in a changing world

ScienceDaily - 23. Jaanuar 2018 - 17:20
Climbing a mountain is challenging. So, too, is providing the best possible information to plan for climate change's impact on mountain vegetation and wildlife. Scientists show that using several sources of climate measurements when modeling the potential future distributions of mountain vegetation and wildlife can increase confidence in the model results and provide useful guidance for conservation planning.
Kategooriad: Välismaa uudised

Predicting snowpack even before the snow falls

ScienceDaily - 22. Jaanuar 2018 - 23:47
As farmers in the American West decide what, when and where to plant, and urban water managers plan for water needs in the next year, they want to know how much water their community will get from melting snow in the mountains. This melting snow comes from snowpack, the high elevation reservoir of snow which melts in the spring and summer. New NOAA research is showing we can predict snow levels in the mountains of the West in March some eight months in advance.
Kategooriad: Välismaa uudised

Long-term warming trend continued in 2017: NASA, NOAA

ScienceDaily - 19. Jaanuar 2018 - 0:37
Continuing the planet's long-term warming trend, globally averaged temperatures in 2017 were 1.62 degrees Fahrenheit (0.90 degrees Celsius) warmer than the 1951 to 1980 mean, according to scientists.
Kategooriad: Välismaa uudised

27. aprilli ekstreemumid 2008-2018

AastaMaks.KeskmineMin.
20187,9°C4,74°C2,1°C
201710,5°C3,78°C-2,1°C
201614,4°C6,41°C2,3°C
201518,2°C9,23°C2,9°C
201419,9°C8,81°C-2,9°C
20138,9°C3,39°C-2,8°C
201222,2°C11,40°C5,4°C
201121,2°C9,71°C-0,4°C
201018,7°C10,02°C0,7°C
200923,2°C12,69°C1,0°C
200819,1°C9,50°C0,8°C

Ilmateenistuse ennustus

1...6°C
6...12°C
2...6°C
7...13°C
0...5°C
7...17°C
3...9°C
8...20°C

Rõhkkonnad Eestis

PäevMadal- rõhkkondKõrg- rõhkkond
25.04.Madeleine
24.04.Madeleine
23.04.Onni
22.04.Lis
21.04.Lis

Ennustuse täpsuse jooksva kuu parimad

AllikasPäevi%
Yr.no192,08%
Yr.no290,66%
Yr.no389,43%
Ilmateenistus 188,43%
Forecast.io188,02%

Päevarekordid

Täna Tallinnas kõige soojem on olnud 25,2°C (1986) ja külmem -6,3°C (1955).

Täna Tartus kõige soojem on olnud 24,7°C (1986) ja külmem -12,5°C (1981).

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