HOME >> BIOLOGY >> NEWS
The insides of clouds may be the key to climate change

ANN ARBOR, Mich.---As climate change scientists develop ever more sophisticated climate models to project an expected path of temperature change, it is becoming increasingly important to include the effects of aerosols on clouds, according to Joyce E. Penner, a leading atmospheric scientist at the University of Michigan.

That's because aerosols, fine particles such as smoke and dust that form droplets in clouds and change cloud thickness, affect how much sun is able to pass through the cloud to Earth, as well as the amount of moisture that's returned to Earth. Both moisture and sunlight play significant roles in climate change.

"Think of it as having two clouds--one made of cotton and the other of Styrofoam," Penner said. "More sunlight and moisture will pass through a cloud of cotton as opposed to the denser cloud of Styrofoam. This difference is becoming more critical in terms of modeling future changes in the climate as we continue to produce more and more aerosols that form thicker and thicker clouds." Penner will present a talk on this topic, "Aerosol-Cloud Interactions and Climate Projections" during panel at a meeting of the American Association for the Advancement of Science in San Francisco on Feb. 17.

By comparing the observed temperature change record since 1850 with two different climate models, one that has low climate sensitivity and small amounts of aerosols and one that has high climate sensitivity and high amounts of aerosols, Penner's group showed that both models follow almost identical predictive paths in the past, but diverge significantly when predicting the temperature in the future

Penner's presentation also looks at the predictive capability of three climate models, a US NCAR-Oslo model, a French model and a Japanese model, and shows that differences are large, especially when the models predict both aerosols and their cloud effects in the assumed level of aerosols at the time, significantly chang
'"/>

Contact: Laura Bailey
baileylm@umich.edu
734-647-7087
University of Michigan
17-Feb-2007


Page: 1 2

Related biology news :

1. Sleeping sickness parasite shows how cells divide their insides
2. Scientists track impact of Asian dust and pollution on clouds, climate change
3. Satellite instrument helps tackle mysteries of ozone-eating clouds
4. Forests in the clouds
5. Nanobacteria in clouds could spread disease, scientists claim
6. 1 of deep oceans most turbulent areas has big impact on climate
7. Changing climate will challenge Northeast agriculture, CU expert warns
8. New perspectives for the geosciences and climate research
9. Salty oceans provide early warning for climate change
10. Land conversion and climate threaten land birds
11. Study warns climate change and deforestation will lead to declines in global bird diversity

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/28/2020)... ... June 25, 2020 , ... In an upcoming episode scheduled for the ... of Care Testing solutions (POCT). Check local listings for more info. , Today, the ... and are shipped to labs throughout the country. Results are then available several days ...
(Date:6/23/2020)... ... June 23, 2020 , ... ... and Renovagen Ltd, a UK supplier and manufacturer of innovative portable renewable energy ... operations in the fight against the COVID-19 pandemic in Zambia. , One of ...
(Date:6/23/2020)... (PRWEB) , ... June 23, 2020 , ... In its ... feature interview with Dr. James L. Sherley, M.D., Ph.D., founder and director of ... the company announced on June 16 that starting July 5 it would ...
Breaking Biology News(10 mins):
(Date:6/28/2020)... ... June 25, 2020 , ... With ... a vaccine or drug treatment. In an effort to better understand the cellular ... the world’s largest imaging dataset portraying therapeutic compound effects from over 1,600 approved ...
(Date:6/23/2020)... ... June 23, 2020 , ... DeCurtis Corporation, the premier provider ... Derek Fournier has been appointed CEO and President. Founder and former CEO, David ... , “DeCurtis Corporation has been on an incredible journey for the last twenty ...
(Date:6/19/2020)... Russia (PRWEB) , ... June 18, 2020 , ... The ... 2018. Its goal is to join forces to radically prolong life and find a ... postpone the aging period. This project was supported by various scientists from all over ...
(Date:6/11/2020)... ... June 09, 2020 , ... Reducing carbon emissions has been and will continue ... to stock market dips, ways to reduce CO2 is something we can’t avoid. ... of the biofuels being produced today are created from recycled cooking oil or crops. ...
Breaking Biology Technology:
Cached News: