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> Scientists predict harsher winters <
Chicago (AFP) - A warmer Arctic could permanently affect the pattern of the high-altitude polar jet stream, resulting in longer and colder winters over North America and northern Europe, US scientists say. The jet stream, a ribbon of high altitude, high-speed wind in northern latitudes that blows from west to east, is formed when the cold Arctic air clashes with warmer air from further south. The greater the difference in temperature, the faster the jet stream moves. According to Jennifer Francis, a climate expert at Rutgers University, the Arctic air has warmed in recent years as a result of melting polar ice caps, meaning there is now less of a difference in temperatures when it hits air from lower latitudes. "The jet stream is a very fast moving river of air over our head," she said Saturday at a meeting of the American Association for the Advancement of Science. "But over the past two decades the jet stream has weakened. This is something we can measure," she said. As a result, instead of circling the earth in the far north, the jet stream has begun to meander, like a river heading off course. This has brought chilly Arctic weather further south than normal, and warmer temperatures up north. Perhaps most disturbingly, it remains in place for longer periods of time. The United States is currently enduring an especially bitter winter, with the midwestern and southern US states experiencing unusually low temperatures. In contrast, far northern regions like Alaska are going through an unusually warm winter this year. This suggests "that weather patterns are changing," Francis said. "We can expect more of the same and we can expect it to happen more frequently." Temperatures in the Arctic have been rising "two to three times faster than the rest of the planet," said James Overland, a weather expert with the National Oceanic and Atmospheric Administration (NOAA). Francis says it is premature to blame humans for these changes. "Our data to look at this effect is very short and so it is hard to get very clear signal," she said. "But as we have more data I do think we will start to see the influence of climate change," she said. - Dire impact on agriculture - The meandering jet steam phenomenon, sometimes called "Santa's Revenge", remains a controversial idea. "There is evidence for and against it," said Mark Serreze, director of the National Snowland Ice Data Center in Boulder, Colorado. But he said rising Arctic temperatures are directly linked to melting ice caps. "The sea ice cover acts as a lid which separates the ocean from a colder atmosphere," Serreze told the conference. But if the lid is removed, then warmth contained in the water rises into the atmosphere. This warming trend and the shifting jet stream will have a dire impact on agriculture, especially in the farm-rich middle-latitudes in the United States. "We are going to see changes in patterns of precipitation, of temperatures that might be linked to what is going on in the far north," said Serreze. Jerry Hatfield, head of the National Laboratory for Agriculture and Environment in the midwestern state of Iowa, warned that this is not a phenomenon that affects only the United States. "Look around the world -- we produce the bulk of our crops around this mid-latitude area," he said. The main impact on agriculture and livestock will not come from small temperature changes, but rather from temperature extremes and the weather patterns that hold them in place for longer periods of time. Droughts and freezes are already having "a major impact on animal productivity, it influences meat production, milk and eggs production," he said. Yahoo! :rolleyes: Source above :( |
I disagree.
Last year was one of the warmest/driest winters in history. This year was harsher due to the Jet stream being so far south. It depends year from year wherever the Jet Stream may fall. The Jet stream is something you can not predict years in advance as it moves Daily. If anyone thinks the Jet stream can weaken or gain that much amount of strength, they really need to find a new career. TheJet streams can fluctuate in strength between 100-200mph but they never actually lose enough to change much. The Jet stream IS becoming weaker year by year due to the earth spins slower as times moves on, but not enough to change the weather in our lifetime or even notice. |
Summary of the Jet Stream and the weather it creates:
We cannot predict that years in Advance. |
Here is the weather for the North Pole the next few days
Today Feb 17 http://s.imwx.com/v.20131006.215227/...icon/70/30.png 2°F -21°F Partly Cloudy Chance of snow:10% Wind: SW at 1 mph Details Tue Feb 18 http://s.imwx.com/v.20131006.215227/...icon/70/30.png -3° -20° Partly Cloudy Chance of snow:20% Wind: ENE at 2 mph Details Wed Feb 19 http://s.imwx.com/v.20131006.215227/...icon/70/30.png -4° -28° Partly Cloudy Chance of snow:0% Wind: WNW at 1 mph Details Thu Feb 20 http://s.imwx.com/v.20131006.215227/...icon/70/30.png -9° -26° Partly Cloudy Chance of snow:10% Wind: Calm Details Fri Feb 21 http://s.imwx.com/v.20131006.215227/...icon/70/34.png -3° -13° Mostly Sunny Please tell me how ice melts at below 0F temps daily. anyone? It's all BS |
"Wish all SunShine & Happiness"
:rolleyes:...Thanks `Devin for your posts/words on the weather predictions.
It's a good debate & I am sure not versed on this topic. Climate Change ? > Like `life > It's always changing 4-Sure :) Time will reveal the truth > Facts :)
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Is our Planet dying ?
http://l.yimg.com/bt/api/res/1.2/des...7067000aa0.jpg
Study: Arctic getting darker, making Earth warmer < Click for more infor :eek: WASHINGTON (AP) — The Arctic isn't nearly as bright and white as it used to be because of more ice melting in the ocean, and that's turning out to be a global problem, a new study says. Associated Press 6 hours ago |
In the fall they were saying that we were going to have a mild winter. Obviously they can't even get 3 months in advance correct.
The pattern of news is about how unreal and poor this winter has been. So everyone is going to jump on that and create buzz and stories. I also don't believe it. We're allowed to have a tough storm once a decade without crying global warming :rotfl: |
Don't shoot the Mail - Net - Newsman > LOL
Originally Posted by ChibiBlackSheep
(Post 597927)
I also don't believe it. We're allowed to have a tough storm once a decade without crying global warming :rotfl: http://www.mikron.org.uk/images/2013...ShootTitle.png http://pipeandpiper.co.uk/wp/wp-cont...05/default.jpg
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Global warming is a myth and that is the truth. quick everyone straight pipes and no cat! screw the enviroment!!!
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Thanks Everyone for your posts/words on this debatable topic.
Time will reveal the truth ? :eek::confused: I think the Sharks are attacker humans because of what we are doing to our oceans with all the pollutions that we are dumping into our oceans. I've swam with the sharks since I was a little kid & they never once bothered me :eek:, but lately, they are attacking swimmer's & surfers +.. I notice all the garbage in our Ocean :( http://consciouslifestyles.files.wor...ted-oceans.jpghttp://2.bp.blogspot.com/_pY2t-G-l7O..._Pollution.jpg Monday, February 17, 2014 U.S. #1 In Shark Attacks, Florida #1 In U.S. http://4.bp.blogspot.com/-sVE-UfNpsg...500x369%29.jpg Woman attacked by shark in Brevard County. Brevard Times / File photo.COCOA BEACH, Florida -- The International Shark Attack File (ISAF) released its 2013 Worldwide Shark Attack Summary today after investigating 125 alleged incidents of shark-human interaction occurring worldwide in 2013. 72 of those incidents were classified by ISAF as unprovoked shark attacks - down from 81 in 2012. The United States had the most shark attacks world-wide at 47. Australia was second with 10. The 47 attacks in the United States was lower than the 2012 total of 54 recorded attacks (including Hawaii and Puerto Rico), the highest yearly total of the century, according to ISAF researchers from the University of Florida. Florida had the most, and nearly half (23) of all unprovoked shark attacks in the United States. Hawaii had the second highest (13) number of shark attacks, followed by South Carolina with 6 attacks. Within Florida, Volusia County had the highest number of shark attacks at 8. Volusia's southern neighbor, Brevard County, came in second with 3 shark attacks. ISAF says geographically adjacent counties located on the central east coast, just east of Orlando, have collectively recorded more than one-third (37%: 257 of 687 cases) of the entirety of Florida's shark-human interactions to date. Researchers say that this high number of shark attacks around Florida's Space Coast is attributable to very high aquatic recreational utilization of their attractive beaches and waters by both Florida residents and tourists, especially surfers, and the rich nature of Florida's marine fauna. http://4.bp.blogspot.com/-txya1p_g55...s400/shark.jpgBlack Tip Shark. Photo Credit: NOAA According to NOAA, the number one species for biting along the beaches on the U.S. East Coast is the blacktip shark (Carcharhinus limbatus) in the top picture. The shark has black tips on its pectoral fins and grows to no more than about six feet. FATALITIES: Ten fatalities resulted from unprovoked attacks in 2013, up from the 2012 total of seven and above the 2003-2012 ten-year average of six fatalities per year. Fatalities were recorded in Australia (2), Réunion (2), Brazil (1), Diego Garcia (1), Hawaii (1), Jamaica (1), New Zealand (1), and South Africa (1). The fatality rate in the U.S. was notably lower (2.1%) than that of rest of the world (36%), which researchers believe is likely reflective of the greater safety and medical capacity in areas of the U.S. where shark attacks historically occur. Surfers and others participating in board sports (46% of cases: 48 incidents) were most often involved in these incidents in 2013. Less affected recreational user groups included swimmers/waders (31%) and divers (14%). Surfers have been the most-affected user group in recent years. Researchers say that this is the probable result of the large amount of time spent by these folks engaged in provocative activity (kicking of feet, splashing of hands, and "wipeouts") in areas frequented by sharks, the surf zone. BREVARD COUNTY SHARK NEWS STORIES: Florida Lifeguard Pulls Shark Back Into The Water! Brevard Shark Fisherman Falls Into Water With Shark Shark Attacks Woman In Cape Canaveral: VIDEO Shark Attack In Melbourne, Florida 19-Year-Old Orlando Man Bitten By Shark In Brevard Shark Bites Man's Hand in Melbourne Beach Shark Attacks Teen Off Florida's Space Coast |
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