deforestation causes cooling in northern canada
Last Updated : GMT 06:49:16
Arab Today, arab today
Arab Today, arab today
Last Updated : GMT 06:49:16
Arab Today, arab today

Deforestation causes cooling in northern Canada

Arab Today, arab today

Arab Today, arab today Deforestation causes cooling in northern Canada

Toronto - Fars

The impact of deforestation on global warming varies with latitude, according to new research from a team of scientists representing 20 institutions from around the world.The surprising finding, which researchers say calls for new climate-monitoring strategies, will be published in the Nov. 17 issue of the journal Nature. "It depends where the deforestation is," said UC Davis atmospheric science Professor Kyaw Tha Paw U, a study co-author. "It could have some cooling effects at the regional scale, at higher latitudes, but there's no indication deforestation is cooling lower latitudes, and in fact may actually cause warming." "Because surface station observations are made in grassy fields with biophysical properties of cleared land, they do not accurately represent the state of climate for 30 percent of the terrestrial surface covered by forests," the study says. Paw U and his colleagues found that deforestation in the boreal region, north of 45 degrees latitude, results in a net cooling effect. While cutting down trees releases carbon into the atmosphere, it also increases an area's albedo, or reflection of sunlight. Surface temperatures in open, nonforested, high-latitude areas were cooler because these surfaces reflected the sun's rays, while nearby forested areas absorbed the sun's heat. At night, without the albedo effect, open land continued to cool faster than forests, which force warm turbulent air from aloft to the ground. "People are debating whether afforestation is a good idea in high latitudes," said Xuhui Lee, the study's principal investigator and professor of meteorology at the Yale School of Forestry & Environmental Studies. "If you plant trees you sequester carbon, which is a benefit to the climate system. At the same time, if you plant trees you warm the landscape because trees are darker compared to other vegetation types. So they absorb solar radiation." Paw U emphasized that the findings should not be viewed as a "green light" to cut down forests in high latitudes. "The intent is to clarify where we can see these regional effects using actual temperature measurements," he said. "Besides absorbing carbon dioxide, forest ecosystems have a number of other valuable qualities, even if at certain latitudes they may be warmer than open areas." The researchers calculated that north of Minnesota, or above 45 degrees latitude, deforestation was associated with an average temperature decrease of 1.5 degrees Fahrenheit. On the other hand, deforestation south of North Carolina, or below 35 degrees latitude, appeared to cause warming. Statistically insignificant cooling occurred between these two latitudes. The researchers collected temperature data from a network of specialized weather stations in forests ranging from Florida to Manitoba and compared results with nearby stations situated in open grassy areas that were used as a proxy for deforested land. "The cooling effect is linear with latitude, so the farther north you go, the cooler you get with deforestation," said Lee. David Hollinger, a scientist with the USDA Forest Service and study co-author, said, "Another way to look at the results is that the climate cooling benefits of planting forests is compounded as you move toward the tropics."

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

deforestation causes cooling in northern canada deforestation causes cooling in northern canada

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

deforestation causes cooling in northern canada deforestation causes cooling in northern canada

 



GMT 21:16 2016 Monday ,27 June

Zaki Badr discusses cleaning problem in Giza

GMT 21:46 2017 Saturday ,14 January

Turkey arrests 60 businessmen for alleged Gulen ties

GMT 22:38 2017 Friday ,24 March

Abbas meets with Merkel in Berlin

GMT 09:02 2017 Monday ,27 March

Tunisian Premier Concludes Visit to Sudan

GMT 15:54 2017 Friday ,01 September

Attorney General Directs Prosecutors to inspect Prison

GMT 09:22 2017 Sunday ,31 December

HM King condoles with Afghanistan President

GMT 10:12 2016 Wednesday ,06 April

Strong dollar, mild weather shrink H&M profits

GMT 17:03 2016 Saturday ,24 December

7 police killed in attacks in Afghansitan

GMT 13:51 2017 Friday ,17 March

Israel denies Syria shot down a warplane

GMT 04:08 2017 Thursday ,05 January

Carbon tax can fund clean energy transition

GMT 19:27 2016 Wednesday ,14 September

Alstom to go ahead with plans to shut down Belfort plant
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday