Navigation Links
Effect of cloud-scattered sunlight on earth's energy balance depends on wavelength of light
Date:4/22/2011

need two numbers. First they need to measure the total amount of sunlight in a cloudy sky. Then they need to determine how bright that sky would be without the clouds, imagining that same sky to be blue and cloudless, when aerosols are in charge of a sky's brightness. The difference between those numbers is the net cloud effect.

Rainbow energy

Researchers have traditionally estimated the net cloud effect by measuring a broad spectrum of sunlight that makes it to the earth's surface, from ultraviolet to infrared. But clouds are white that's because the large water droplets within them scatter light of all colors almost equally in the visible spectrum, the part of the electromagnetic spectrum that includes the colors of the rainbow.

On the other hand, aerosols both within clouds and in the open sky bounce different-colored light unequally. Broadband measurements that fail to distinguish color differences might be covering up important details, the researchers thought.

Instead of taking one broadband measurement that covers everything from ultraviolet to infrared, Kassianov and crew wanted to determine how individual wavelengths contribute to the net cloud effect. To do so, the team used an instrument that can measure brightness at four different wavelengths of color violet, green, orange, red and two of infrared.

In addition, this instrument, a spectral radiometer at DOE's Atmospheric Radiation Measurement Climate Research Facility located on the southern Great Plains in Oklahoma, allowed the team to calculate what the brightness would be if the day sported a cloudless, blue sky. The spectral measurements taken by the radiometer can be converted into the amount and properties of aerosols. Then aerosol properties can be used to calculate clear blue sky brightness.

Clouds Gone Wild

Comparing measured values for cloudy sky to the calculated values for clear sky, the researchers found that,
'/>"/>

Contact: Mary Beckman
mary.beckman@pnl.gov
509-375-3688
DOE/Pacific Northwest National Laboratory
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Louisiana, Florida residents differ on views of long-term effects of oil spill
2. The health halo effect: Dont judge a food by its organic label
3. Soy increases effectiveness of radiation at killing lung cancer, Wayne State study shows
4. Nanopolymer shows promise for helping reduce cancer side effects
5. Cost effective manure management
6. Epidemiological study demonstrates climate change effects on forests
7. Research on antibiotic use, drug resistant organisms and effectiveness of electronic faucets
8. Micro-RNA blocks the effect of insulin in obesity
9. New study shows you can have your candy and eat it too -- without adverse health effects
10. Satellites show effect of 2010 drought on Amazon forests
11. Small code change, big effect
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Effect of cloud-scattered sunlight on earth's energy balance depends on wavelength of light
(Date:11/4/2014)... newly published research study examining only marketing directed ... fast food restaurants has found that the majority ... exposed to such marketing tactics. , Authored by ... colleagues, the study is the first to examine ... and exterior of fast food restaurants and its ...
(Date:11/3/2014)... , Nov. 3, 2014 Research and ... "Cell Therapy - Technologies, Markets and Companies" to ... cell therapy technologies and methods, which have already started to ... stem cell transplantation is replacing the old fashioned bone marrow ... Cell therapy is bound to become a part of medical ...
(Date:11/2/2014)... issue of Physics World , James Dacey explores ... of death" to take their innovations from the lab ... gruelling challenge facing all start-up companies as they move ... because of two main factors: physics-based inventions are usually ... turn out to be a lot more complicated than ...
Breaking Biology News(10 mins):Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3The 'valley of death' facing physics start-ups 2
... found that the transport of proteins into chloroplasts in plants ... the previously accepted notion that this process is age-independent or ... research, led by Dr. Hsou-min Li, a Research Fellow from ... published October 30 in the open access journal PLOS ...
... Brazil has become the latest country to join the Global ... access to biodiversity data. , The formal step of becoming ... Memorandum of Understanding by the Brazilian Minister for Science, ... a country to setting up a national node to coordinate ...
... The latest significant biomedical informatics technology is not ... In fact, it,s coming from a children,s hospital. ... Transformatix Technologies, Inc., in Davis, California, have partnered ... designed to supply advanced software solutions for disease ...
Cached Biology News:Import of proteins into chloroplasts is differentially regulated by age 2Brazil joins global initiative for biodiversity data access 2Brazil joins global initiative for biodiversity data access 3NCH partners with Silicon Valley to market high-end diagnostic and medical research software 2
(Date:11/21/2014)... -- , Todd Martensen se ... Mariano Rodríguez es elegid vicepresidente senior de desarrollo empresarial y ... marcha para comenzar de forma rápida la comercialización de su ... en Europa   , KLOX Technologies ... siguientes nombramientos: Todd Martensen ha sido ...
(Date:11/21/2014)... (PRWEB) November 19, 2014 The science ... lives was shared with more than 200 primary students ... students from the University of Otago Physics Department and ... The Otago students, members of the university’s OSA/SPIE Student ... in early September, giving children from small, rural schools ...
(Date:11/21/2014)... Los Angeles, CA (PRWEB) November 20, 2014 ... “A Short Walk to the Other Side” ... was an “Award-Winning Finalist in the “Fiction: Short Story” ... . , Jeffrey Keen, President and CEO of USA ... entries from mainstream and independent publishers, including Simon & ...
(Date:11/21/2014)... 2014 The report, "Synthetic ... Enzymes, Cloning kits), Technology (Bioinformatics, Nanotechnology, Gene ... Biomaterials, Bioremediation) - Global Forecast to 2018", ... threats, opportunities, and challenges. , Browse 99 ... through 185 pages and in-depth TOC of ...
Breaking Biology Technology:KLOX Technologies anuncia sus nombramientos ejecutivos 2KLOX Technologies anuncia sus nombramientos ejecutivos 3KLOX Technologies anuncia sus nombramientos ejecutivos 4KLOX Technologies anuncia sus nombramientos ejecutivos 5Optics and photonics outreach programs share science, spark fascination with light 2Optics and photonics outreach programs share science, spark fascination with light 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 2Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 4Synthetic Biology Market Expected to Reach $5,630.4 Million in 2018 - New Report by MarketsandMarkets 2Synthetic Biology Market Expected to Reach $5,630.4 Million in 2018 - New Report by MarketsandMarkets 3Synthetic Biology Market Expected to Reach $5,630.4 Million in 2018 - New Report by MarketsandMarkets 4
... about interpersonal skills, influence and collaboration, but when it comes ... command that runs right down the middle. As director of ... Wisconsin-Madison, Annie Stunden manages 500 staff. But because ... responsibilities in other departments on campus, a traditional chain of ...
... shows where beacons and other firefighters are with lights ... you cant see anything else. Video or projected heads-up ... Madison, Wis. Tools for firefighters and ... Innovation Days contest for engineering undergraduates. , ,Seventeen teams ...
... With networking, you dont always have to help people in ... them make a sale). In reality, people also appreciate little ... opening doors and paying for meals). , ,While these details ... how people perceive you and your networking style. Pay attention ...
Cached Biology Technology:Annie Stunden, CIO at the University of Wisconsin-Madison 2Annie Stunden, CIO at the University of Wisconsin-Madison 3Annie Stunden, CIO at the University of Wisconsin-Madison 4Innovation prize-winner would help firefighters get out alive 2Innovation prize-winner would help firefighters get out alive 3Little things can be big in networking 2Little things can be big in networking 3