Navigation Links
Dirty snow may warm Arctic as much as greenhouse gases

The global warming debate has focused on carbon dioxide emissions, but scientists at UC Irvine have determined that a lesser-known mechanism -- dirty snow -- can explain one-third or more of the Arctic warming primarily attributed to greenhouse gases.

Snow becomes dirty when soot from tailpipes, smoke stacks and forest fires enters the atmosphere and falls to the ground. Soot-infused snow is darker than natural snow. Dark surfaces absorb sunlight and cause warming, while bright surfaces reflect heat back into space and cause cooling.

“When we inject dirty particles into the atmosphere and they fall onto snow, the net effect is we warm the polar latitudes,” said Charlie Zender, associate professor of Earth system science at UCI and co-author of the study. “Dark soot can heat up quickly. It’s like placing tiny toaster ovens into the snow pack.”

The study appears this week in the Journal of Geophysical Research.

Dirty snow has had a significant impact on climate warming since the Industrial Revolution. In the past 200 years, the Earth has warmed about .8 degree Celsius. Zender, graduate student Mark Flanner, and their colleagues calculated that dirty snow caused the Earth’s temperature to rise .1 to .15 degree, or up to 19 percent of the total warming.

In the past two centuries, the Arctic has warmed about 1.6 degrees. Dirty snow caused .5 to 1.5 degrees of warming, or up to 94 percent of the observed change, the scientists determined.

The amount of warming by dirty snow varied from year to year, with higher temperatures in years with many forest fires. Greenhouse gases, which trap outgoing energy, are primarily responsible for the remaining temperature increase and are considered the Earth’s most important overall climate changing mechanism. Other human influences on Arctic climate change are particles in the atmosphere, including soot; clouds; and land use.

Humans create the majority of airborne s
'"/>

Source:University of California - Irvine


Page: 1 2

Related biology news :

1. Grizzlies set to invade high Arctic?
2. Innovative collaboration brings Arctic science into the classroom
3. Census of Marine Life explorers surprised by diversity, density of Arctic creatures
4. Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
5. Lands surface change on Alaska tundra creating longer, warmer summers in Arctic
6. Displaced songbirds navigate in the high Arctic
7. Scientists to employ Arctic ice and polar bears to protect diversity of worlds crops
8. Arctic coring expedition continues to yield new clues
9. Arctic expedition will investigate alien-like glacier
10. Record air pollution above the Arctic
11. Pollutant haze heats the Arctic
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Dirty snow may warm Arctic much greenhouse gases

(Date:6/24/2015)... JOSE, Calif. , June 24, 2015 /PRNewswire/ ... developer of human interface solutions, today announced that ... sensor to provide secure authentication for its latest ... recently reached more than 200 million shipments of ... with Sharp reinforces Synaptics, strength, scalability and leadership ...
(Date:6/23/2015)... 2015 Research and ... the "Body-Worn Temperature Sensors Market - Global ... 2014 - 2020" report to their offering. ... the global body-worn temperature sensors market. The global ... the basis of types, care setting, patient demographic, ...
(Date:6/18/2015)... 18, 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... the growing mobile commerce market announces that its Wocket® smart ... "Money on the Mark", scheduled to air on WABC Radio ... 20 th . The broadcast air- time ... to 8:00pm EST. NXT-ID, Inc.,s CEO Gino Pereira ...
Breaking Biology News(10 mins):Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2Body-Worn Temperature Sensors Market - Global Industry Analysis 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 3
... two-year study of the potential health effects associated with ... Gulf War. , The study, "An Analysis of Uranium ... Study," performed by Sandia scientist Al Marshall, employs analytical ... examines health risks associated with uranium handling. , U.S. ...
... today announced the receipt of a $7.1 million grant ... a project designed to uncover the genetic causes of ... technologies. This award is part of a greater $25 ... microarray centers that are part of the NIH Neuroscience ...
... Health Network and University of Toronto have identified a ... patient with chronic Hepatitis C will be able to ... become the basis of a simple new test in ... therapy. , The study, published in the May issue ...
Cached Biology News:Sandia completes depleted uranium study 2TGen awarded $7.1 million to accelerate brain disease research 2Identification of specific genes predicts which patients will respond to Hepatitis C treatment 2Identification of specific genes predicts which patients will respond to Hepatitis C treatment 3
(Date:7/1/2015)... ... , ... The next-generation sequencing (NGS) clinical market is poised for huge growth ... BCC Research reveals in its new report that the market drivers of this vibrant ... need for better diagnostics as part of a molecular diagnostics trend. , The global ...
(Date:7/1/2015)... , July 1, 2015 Isagenix International, ... has earned three Gold, three Silver, and three Bronze ... gala held in Chicago this ... the premier business awards program in the U.S. ... our company,s strength in developing leaders, cultivating talent, creating ...
(Date:7/1/2015)... ... July 01, 2015 , ... NEMA 4 ... CTI’ new Medical Joysticks have an impermeable molecular barrier protection against bio-hazardous ... control device that will increase healthcare worker safety and reduce financial costs. , ...
(Date:6/30/2015)... - Resverlogix Corp. ("Resverlogix") (TSX:RVX) announced today that ... approved the resolutions relating to: (i) a private ... at a price of $2.67 per unit (the ... one common share and 0.075358 common share purchase ... and (ii) the amendment to Resverlogix,s articles to ...
Breaking Biology Technology:NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 3Isagenix Earns Nine American Business Awards 2Isagenix Earns Nine American Business Awards 3Sanitized Medical Joysticks for a Safer and Healthier Work Environment 2Resverlogix Corp. Shareholders Approve Matters Relating to Licensing and Equity Arrangement 2Resverlogix Corp. Shareholders Approve Matters Relating to Licensing and Equity Arrangement 3
...  Astellas Pharma Inc. (Tokyo: 4503, Astellas) and Ambit Biosciences ... analysis of a Phase 2 study of quizartinib (formerly ... the 53rd Annual Meeting of the American Society of ... presented from two additional posters: one evaluating the pharmacodynamic ...
... Sangamo BioSciences, Inc. (Nasdaq: SGMO ) announced the ... a disease gene in an adult mouse model of hemophilia ... the 53nd Annual Meeting of the American Society of Hematology ... human gene for the clotting factor, Factor IX, with a ...
... animal cells is usually achieved through the accumulation of glucose, ... glycogen. But when this accumulation happens in neurons it is ... associated with glycogen accumulation is the hallmark of an extremely ... (LD). The journal EMBO Molecular Medicine ...
Cached Biology Technology:Ambit and Astellas Announce Results From Multiple Quizartinib Presentations at the 53rd Annual Meeting of the American Hematology Society 2Ambit and Astellas Announce Results From Multiple Quizartinib Presentations at the 53rd Annual Meeting of the American Hematology Society 3Ambit and Astellas Announce Results From Multiple Quizartinib Presentations at the 53rd Annual Meeting of the American Hematology Society 4Ambit and Astellas Announce Results From Multiple Quizartinib Presentations at the 53rd Annual Meeting of the American Hematology Society 5Ambit and Astellas Announce Results From Multiple Quizartinib Presentations at the 53rd Annual Meeting of the American Hematology Society 6Ambit and Astellas Announce Results From Multiple Quizartinib Presentations at the 53rd Annual Meeting of the American Hematology Society 7Ambit and Astellas Announce Results From Multiple Quizartinib Presentations at the 53rd Annual Meeting of the American Hematology Society 8Sangamo BioSciences Announces Presentation of New Data from ZFP Therapeutic® Program in Hemophilia B at American Society for Hematology Meeting 2Sangamo BioSciences Announces Presentation of New Data from ZFP Therapeutic® Program in Hemophilia B at American Society for Hematology Meeting 3Sangamo BioSciences Announces Presentation of New Data from ZFP Therapeutic® Program in Hemophilia B at American Society for Hematology Meeting 4A mouse model brings new perspectives on Lafora disease 2
...
Anti-VDAC (Voltage-Dependent Anion Channel) AVOID FREEZE/THAW CYCLES. Recognizes the porin 31HL protein. Corresponds to mAb 1 in the literature....
A powerful, easy-to-use solution, the SORVALL RC12BP Blood Processing System allows you to manufacture blood components quickly and cost-effectively while ensuring product quality, safety, and GMP co...
... a recombinant Moloney murine leukemia virus ... is similar to MuLV reverse transcriptase ... MuLV reverse transcriptase is a recombinant ... RNA as a template in the ...
Biology Products: