Global Warming Facts



El video: ... NASA Global Warming Facts: 2009 - Second Warmest Year on Record; End of Warmest Decade --- Please SUBSCRIBE to Science & Reason: • --- Global climate change ... NASA's eyes on the Earth: A warming world - global temperature update ... piecing together the temperature puzzle. Each year, scientists at NASA'S Goddard Institute for Space Studies analyze global temperature data. The past year, 2009, tied as the second warmest year since global instrumental temperature records began 130 years ago. Worldwide, the mean temperature was 0.57°C (1.03°F) warmer than the 1951-1980 base period. And January 2000 to December 2009 came out as the warmest decade on record. • --- 2009 was tied for the second warmest year in the modern record, a new NASA analysis of global surface temperature shows. The analysis, conducted by the Goddard Institute for Space Studies (GISS) in New York City, also shows that in the Southern Hemisphere, 2009 was the warmest year since modern records began in 1880. Although 2008 was the coolest year of the decade, due to strong cooling of the tropical Pacific Ocean, 2009 saw a return to near-record global temperatures. The past year was only a fraction of a degree cooler than 2005, the warmest year on record, and tied with a cluster of other years — 1998, 2002, 2003, 2006 and 2007 1998 and 2007 — as the second warmest year since recordkeeping began. "There's always an interest in the annual temperature numbers and on a given year's ranking, but usually that misses the point," said James Hansen, the director of GISS. "There's substantial year-to-year variability of global temperature caused by the tropical El Niño-La Niña cycle. But when we average temperature over five or ten years to minimize that variability, we find that global warming is continuing unabated." January 2000 to December 2009 was the warmest decade on record. Throughout the last three decades, the GISS surface temperature record shows an upward trend of about 0.2°C (0.36°F) per decade. Since 1880, the year that modern scientific instrumentation became available to monitor temperatures precisely, a clear warming trend is present, though there was a leveling off between the 1940s and 1970s. The near-record temperatures of 2009 occurred despite an unseasonably cool December in much of North America. High air pressures in the Arctic decreased the east-west flow of the jet stream, while also increasing its tendency to blow from north to south and draw cold air southward from the Arctic. This resulted in an unusual effect that caused frigid air from the Arctic to rush into North America and warmer mid-latitude air to shift toward the north. "Of course, the contiguous 48 states cover only 1.5 percent of the world area, so the U.S. temperature does not affect the global temperature much,' said Hansen. In total, average global temperatures have increased by about 0.8°C (1.5°F) since 1880. "That's the important number to keep in mind," said Gavin Schmidt, another GISS climatologist. "In contrast, the difference between, say, the second and sixth warmest years is trivial since the known uncertainty — or noise — in the temperature measurement is larger than some of the differences between the warmest years." Decoding the Temperature Record: Climate scientists agree that rising levels of carbon dioxide and other greenhouse gases trap incoming heat near the surface of the Earth and are the key factors causing the rise in temperatures since 1880, but these gases are not the only factors that can impact global temperatures. • .

Canal: News & Politics
Subido: 23/05/10 a las 4:22 pm
Autor: Best0fScience

Duración: 03:29
Valoración: 4.4028683
Vistas: 307120


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Ultimos comentarios:
J Scott Upton (el 25/06/14 a las 3:44 am)
Wow. This video is just full of mis information.
Aanthanur DC (el 15/07/14 a las 2:43 pm)
+juggalo2112 and what caused the last deglaciation? and what feedback amplified the initial warming so all the ice could melt?
rota cetle (el 20/06/14 a las 1:42 am)
Maybe we should just blow the Earth out of existence. Problem solved, no globe no global warming.
Merlin5by5 (el 29/08/14 a las 9:41 am)
NASA climatologists have been trying to prove this crap for decades. According to some of their reports in the 1980s, Cape Canavaeral in Florida should be underwater by now, and it is not. Hurricanes were supposed to be more violent, and they haven't been. The Old Farmer's Almanac has beaten IPCC and NASA predictions for 11 years running. Bangladesh was supposed to be underwater by the 1990s, and it's not. Do yourself a credibility favor, NASA, fund climate change skeptics, as well as climate change salesmen, and see who wins.
Notrogemaz Boom (el 08/08/14 a las 1:24 pm)
Please help us out, were working on the global warming and surveys really helps us, in this survery there are only 2 questions, that wont take more than a minute, but will mean litteraly the world to us, please help us.
Cliff Charpentier (el 16/10/14 a las 1:08 am)
At least this guy is realistic in the beginning. The ice caps have melted before and they will melt again. We might be shaving of a few years but it is inevitable no matter what we do. 5 ice ages and who knkws how many complete melts. We should cut down on fossil fuel because when it runs out shits going to get real. Look at new york and two days of no fuel delivery. Set lain island back a whole month. Took hours in line to refuel
william stockton (el 26/06/14 a las 1:47 am)
The fact is that the planet is in a warming trend. So what? The planet has been heating and cooling from the beginning. Where this video crashes off the rails is when the narrator says "climate scientist BELIEVE" it is caused by CO2. Modern day religion for them that want to control you with fear. Yep. All you fossil fuel burners are GUILTY and will pay with your lives burning in the global warming hell you created!
deathbylife3sAnD7s (el 24/05/14 a las 7:00 am)
If meteorologists can't even get the seven week weather forecast right, why would people depend on them to predict the weather 20-30 years in the future? 
Natasha Pereira (el 18/06/14 a las 9:20 pm)
First of all they should make Hydrogen fuel cars affordable, stricter rules regarding Air-conditioners,not more than 2 Air-conditioners per house,Plant trees in barren areas, segregation of wet and dry waste, composting, Gobar gas,reduce products, reuse products,recycle products, use of solar heater,solar cooker,solar batteries and recently they have made batteries running from sugar which would likely be made available in 2017. But no one seems to bother.People are so irresponsible.The demand for new products, people keep buying and buying more things. Use of ACs has increased here in my city and its only becoming hotter and hotter every year.
Kim Jinuk (el 08/06/14 a las 2:58 pm)
We only have 1 earth. Lets save it,together!

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