Posts tagged USA
Scientists Boulder IMPROVED MEASUREMENTS OF SUN TO ADVANCE UNDERSTANDING OF CLIMATE CHANGE
Jan 15th
In a new study of laboratory and satellite data, researchers report a lower value of that energy, known as total solar irradiance, than previously measured and demonstrate that the satellite instrument that made the measurement—which has a new optical design and was calibrated in a new way—has significantly improved the accuracy and consistency of such measurements.
The new findings give confidence, the researchers say, that other, newer satellites expected to launch starting early this year will measure total solar irradiance with adequate repeatability – and with little enough uncertainty – to help resolve the long-standing question of how significant a contributor solar fluctuations are to the rising average global temperature of the planet.
“Improved accuracies and stabilities in the long-term total solar irradiance record mean improved estimates of the sun’s influence on Earth’s climate,” said Greg Kopp
of the Laboratory for Atmospheric and Space Physics (LASP) of the University of Colorado Boulder.
Kopp, who led the study, and Judith Lean of the Naval Research Laboratory, in Washington, D.C., published their findings today in Geophysical Research Letters, a journal of the American Geophysical Union.
The new work will help advance scientists’ ability to understand the contribution of natural versus anthropogenic causes of climate change, the scientists said. That’s because the research improves the accuracy of the continuous, 32-year record of total solar irradiance, or TSI. Energy from the sun is the primary energy input driving Earth’s climate, which scientific consensus indicates has been warming since the Industrial Revolution.
Lean specializes in the effects of the sun on climate and space weather. She said, “Scientists estimating Earth’s climate sensitivities need accurate and stable solar irradiance records to know exactly how much warming to attribute to changes in the sun’s output, versus anthropogenic or other natural forcings.”
The new, lower TSI value was measured by the LASP-built Total Irradiance Monitor (TIM) instrument on the NASA Solar Radiation and Climate Experiment (SORCE) spacecraft. Tests at a new calibration facility at LASP verify the lower TSI value. The ground-based calibration facility enables scientists to validate their instruments under on-orbit conditions against a reference standard calibrated by the National Institute of Standards and Technology (NIST). Before the development of the calibration facility, solar irradiance instruments would frequently return different measurements from each other, depending on their calibration. To maintain a long-term record of the sun’s output through time, scientists had to rely on overlapping measurements that allowed them to intercalibrate among instruments.
Kopp said, “The calibration facility indicates that the TIM is producing the most accurate total solar irradiance results to date, providing a baseline value that allows us to make the entire 32-year record more accurate. This baseline value will also help ensure that we can maintain this important climate data record for years into the future, reducing the risks from a potential gap in spacecraft measurements.”
Lean said, “We are eager to see how this lower irradiance value affects global climate models, which use various parameters to reproduce current climate: incoming solar radiation is a decisive factor. An improved and extended solar data record will make it easier for us to understand how fluctuations in the sun’s energy output over time affect temperatures, and how Earth’s climate responds to radiative forcing.”
Lean’s model, which is now adjusted to the new lower absolute TSI values, reproduces with high fidelity the TSI variations that TIM observes and indicates that solar irradiance levels during the recent prolonged solar minimum period were likely comparable to levels in past solar minima. Using this model, Lean estimates that solar variability produces about 0.1o Celsius (0.18o Fahrenheit) global warming during the 11-year solar cycle, but is likely not the main cause of global warming in the past three decades.
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Notes for Journalists
Journalists and public information officers (PIOs) of educational and scientific institutions who have registered with AGU can download a PDF copy of this paper in press by clicking on this link:
http://onlinelibrary.wiley.com/doi/10.1029/2010GL045777/abstract;jsessionid=7AE633544C9A94E3832D9F67B4F39D70.d02t02
Or, you may order a copy of the final paper by emailing your request to Peter Weiss at pweiss@agu.org. Please provide your name, the name of your publication, and your phone number.
Neither the paper nor this press release are under embargo.
Title:
“A new, lower value of total solar irradiance: Evidence and climate significance”
Authors:
Greg Kopp: Laboratory for Atmospheric and Space Physics, Boulder,
Colorado, USA;
Judith L. Lean: Space Science Division, Naval Research Laboratory, Washington, D. C., USA.
Social Media shocking failure: scam con shows fickleness of 20-somethings #boulder
Nov 8th
#Boulder #Twitter #socialmedia FAIL Democrats bitch over Republicans
Young social media types completely failed the country on November 2 by failing to vote. It was a terrible blow to the USA and show what a fraud the entire social media phenomena truely is. Young voters have said little about the recent election, but political analysts now blame social media marketiing young professionaals as the main cause of the devastating loss to democrats.
Boulder Social media hotshots such as Brett Greene and his cadre of children soldiers comepletely turned their back on America and sold the country down the river. Just a terrible injustice.
Social media and young voters failed to vote in the last election. Boulder’s over indulgence with Twitter and social media marketing experts completely failed the Democrat party. This demonstrates that social media is just another American flash in the pan and cannot be depended upon for consistent marketing
Analysis of the recent mid term elections now show that 20 somethings on twitter failed to vote, handing the election to Republicans. Social media failed to get out the vote for Democrats . Locally, Boulder twitter was mostly devoid of get out the vote activity. social media gurus spent election periods in idle chit chat, gossip and bitching over their lives.
On Friday many of them now complained about Republicans control of congress failing to see that their field of work is an untennable solution for elections.
Twitter in Boulder by daily social media proponents complain about republicans but seemed oblivious to their own failing in getting out the vote nationwide.
US under attack! Al Qaeda begins Holiday bombing campaign to USA #boulder
Nov 1st
Sophisticated bomb techniques show Engineering types seem to be involved
Al Qaeda has sent multiple bombs on passenger planes from Yemen. Some were shipped to Chicago synagogs but were interdicted by the FBI. More importantly the White House says “there may still be bombs out there.” US stops shipments from Yemen.
Al Qaeda picked Chicago because president Obama is from there. Osama bin Laden appears to be behind this round of attacks as america’s election season is under way. It also marks the beginning of Al Qaeda Holiday terror campaign. This sophisticated bomb designer has been identyfied and is the same as last Xmas underwear bomber.
This Halloween event shows once again that the USA is still under attack and at war with radical Muslim Islamics from the middle east. These were religeous in nature since it is aimed at Jews and Christians. Iraqi security forces stormed a Catholic church Sunday where gunmen suspected of having ties to al Qaeda were holding worshippers hostages. The US usually down plays the religeous connect.
The Obama administration has stepped up special forces operations consistent with Bush Doctine. Radical Islamic cells exist in over 125 countries where Muslim wars continue according to Boulder’s Soldier of Fortune magazine which recruites soldiers for private armies.
Though the US mainland misssed the bullet on Halloween day it is clear the US was attacked and the war goes on. boulder leftists often blame the USA for Muslim attacks on our homeland.
Just yesterday the Colorado Democrat party has asked for a Grand jury Investigation into the causes of 911. Promoted by 911 conspirasistsl which believe president GW Bush and Osama bin Ladin organized the bombings of the World trade centers in New York. This theory is considered in extremely bad taste by the Obama administration.