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

on average, puffy fair-weather clouds cool down the earth's surface by several percent on a summer day. Although clouds cool overall, two components that the researchers looked at from direct and scattered sunlight had opposite effects.

The direct component accounts for the shade provided by clouds and cools the earth. The second component accounts for the sunlight scattered between and under clouds, which makes the sky brighter, warming the earth.

"The sunlight scattered by clouds can heat the surface," said Kassianov. "We all know that we can still get sunburned on cloudy days. This explains why."

In the Oklahoma summer, the scattered-light effect measured by the researchers could be quite large. For example, if a cloud passed over the instrument, the measured cloudy sky brightness exceeded calculated clear sky value by up to 30 percent. Kassianov attributes that large difference to scattered sunlight being "caught on tape" by the radiometer.

"Sunlight scattered by three-dimensional, irregular clouds is responsible for the observed large difference. The one-dimensional cloud simulations currently used in large-scale climate models don't capture this diffuse light," said Kassianov.

Aerosols' Day in the Sky

The team also found that the effect changed depending on the measured visible-spectrum wavelength, and whether the light was direct or scattered.

With direct light, the cooling caused by clouds was weakest on the violet end of the spectrum and strongest at infrared. With scattered light, warming caused by clouds was also weakest at violet and the strongest at infrared. Overall, the least cooling and warming occurred at violet, and the most cooling and warming occurred at infrared.

Because large droplets in clouds scatter sunlight almost uniformly across the spectrum, the clouds themselves can't be the reason why different wavelengths contribute differently to the net cloud effect. Co
'/>"/>

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:9/22/2014)... in the country selected by the National Institutes ... Award a $2 million grant designed to ... sciences graduate trainees to career opportunities that go ... taken. , The award funds development of the ... program. It includes courses, seminars, shadowing, mentoring and ...
(Date:9/22/2014)... Evacuations of 2,819 people have occurred in the wake ... near the Eldorado National Forest. The King Fire ... of the American River Canyon, Silver Creek Canyon, and ... Pines. The fire has crossed into Placer County and ... Eldorado National Forest. The anticipated spread is expected to ...
(Date:9/21/2014)... General Assembly events focussed on ways to save and ... Challenges Canada, funded by the Government of Canada, today ... to address this challenge. , The novel approaches include: ... working in garment factories to express, pasteurize and store ... due to child illnesses, and lowering baby formula expense ...
Breaking Biology News(10 mins):Rutgers receives $2 million grant to prepare biomedical students for roles in industry 2Rutgers receives $2 million grant to prepare biomedical students for roles in industry 3Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 2Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 3Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 4Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 5Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 6Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 7Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 8Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 9Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 10Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 11Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 12Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 13Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 14Canada funds 22 innovative projects to help save 'Every Woman, Every Child' 15
... 2010 Cellular imaging offers a wealth of data ... technique to study biological systems is a daunting challenge. ... Research ( www.genome.org ), researchers have developed a ... identify genetic interactions within biological networks, offering a glimpse ...
... in third-hand smoke, the residue from tobacco smoke that ... has been extinguished, reacts with the common indoor air ... potential health hazard was revealed in a multi-institutional study ... (Berkeley Lab). "The burning of tobacco releases nicotine ...
... Advanced maternal age is linked to a significantly elevated risk ... age, according to an exhaustive study of all births in ... Advanced paternal age is associated with elevated autism risk only ... 30, the study found. Published online today in the ...
Cached Biology News:Method of the future uses single-cell imaging to identify gene interactions 2Study reveals new details on the dangers of third-hand smoke 2Study reveals new details on the dangers of third-hand smoke 3Study reveals new details on the dangers of third-hand smoke 4UC Davis study confirms link between advanced maternal age and autism 2UC Davis study confirms link between advanced maternal age and autism 3UC Davis study confirms link between advanced maternal age and autism 4
(Date:9/22/2014)... Mass. , Sept. 22, 2014 ... GEVA ), a biopharmaceutical company developing therapeutic ... of Robert Bazemore as Chief Operating ... , President and Chief Executive Officer, Robert will ... company,s lead program, sebelipase alfa for LAL Deficiency, ...
(Date:9/21/2014)... have discovered how to produce ultra-thin "diamond nanothreads" that ... that of today,s strongest nanotubes and polymers. A paper ... John V. Badding, a professor of chemistry at Penn ... 2014 issue of the journal Nature Materials . ... is intriguing because the threads we formed have a ...
(Date:9/20/2014)... Austin, Texas (PRWEB) September 20, 2014 ... of integrated urological and interventional radiology products and ... Endocare, Inc. subsidiary with Clinicon Corporation ... addition expands HealthTronics’ portfolio of minimally invasive, mobile, ... their patients. , Under the agreement, HealthTronics will ...
(Date:9/19/2014)... is rarely simple. From crop yields to disease risks, ... those considered "complex traits." Just as for heightthe textbook ... particular human disease are shaped by multiple genetic and ... involved. To track down such genes, geneticists typically mate ... large mouse and a small mouseand then study their ...
Breaking Biology Technology:Synageva BioPharma Appoints Robert Bazemore As Chief Operating Officer 2Synageva BioPharma Appoints Robert Bazemore As Chief Operating Officer 3Synageva BioPharma Appoints Robert Bazemore As Chief Operating Officer 4Smallest possible diamonds form ultra-thin nanothreads 2Smallest possible diamonds form ultra-thin nanothreads 3Smallest possible diamonds form ultra-thin nanothreads 4HealthTronics Announces Distribution Agreement with Clinicon-Laser Surgical Device Expands Minimally Invasive, Mobile Technology Portfolio 2HealthTronics Announces Distribution Agreement with Clinicon-Laser Surgical Device Expands Minimally Invasive, Mobile Technology Portfolio 3Want to link genes to complex traits? Start with more diversity 2
... 2011 Arecor, the leading company ... and vaccines, is pleased to announce the appointment ... Howell will be responsible for the operations of ... Arecor,s upward growth curve ensuring the company continues ...
... Nov. 10, 2011 Avaxia Biologics, Inc. , ... act locally within the gastrointestinal tract, announced today that ... of a Series A angel-led financing. Cherrystone Angels of ... Boston Harbor Angels and other undisclosed individuals. Mr. Robert ...
... Discovery Laboratories, Inc. (Nasdaq: DSCO ), ... respiratory critical care, today reports financial results for the third ... of the SURFAXIN® and AFECTAIR™ programs.  The Company will host ... call details are below. Selected third quarter highlights ...
Cached Biology Technology:Arecor Appoints Dr. Sarah Howell as Chief Operating Officer 2Avaxia Biologics, Inc. Raises $2.2 Million in First Closing of Series A Financing to Advance Oral Antibodies for Inflammatory Bowel Disease 2Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 2Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 3Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 4Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 5Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 6Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 7Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 8Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 9
Mouse monoclonal [RL13] to LAP1 ( Abpromise for all tested applications). SwissProtID: Q96NW7...
CircuLex Anti-Human S100P Polyclonal Antibody Research Focus: proliferation Storage: -20C Shipping Temperature: 4C...
Mouse monoclonal [7E10] to C Peptide ( Abpromise for all tested applications). entrezGeneID: 3630 SwissProtID: P01308...
Dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide...
Biology Products: