HOME >> BIOLOGY >> NEWS
UW professor's climate change theory leads to NASA mission

For nearly a decade, University of Washington atmospheric chemist Robert Charlson has advanced the notion that, in some regions, tiny particles from industrial pollution are actually countering the atmospheric warming effects of greenhouse gases. The theory is based on nearly 30 years of observations, using technology patented by the UW, that relate the amount of visible haze to sunlight reflected back into space and to the mass and composition of haze particles.

Now NASA is planning a mission, called PICASSO-CENA, that will provide crucial data to help scientists better understand the role of those submicron-sized particles in human-caused climate change. The mission will use light detection and ranging, or lidar, the optical cousin of radar, to globally measure how much sunlight is reflected into space by clouds and pollution particles. Those particles, called aerosols, make up the familiar hazes in places like the Eastern United States or the Los Angeles area.

Aerosols are of particular interest to Charlson, an emeritus professor of atmospheric sciences and chemistry, because even on a clear day they are present in the skies in and downwind from industrial regions of the Northern Hemisphere. They are about the same size as the wavelength of the light they reflect, which is what makes them so effective - if they were larger or smaller their effect would be far less. The particles partially reflect the sun's heat and partially counter greenhouse warming, particularly in the Northern Hemisphere.

"You could reach the frightening conclusion that we have learned how to pollute just right to prevent climatic disaster. But we haven't learned how to pollute just right because they don't neatly offset each other," Charlson said. "The greenhouse effect works 24 hours a day everywhere and the aerosol effect only works during the day and only in certain places."

In addition, he said, greenhouse gases last for years while aerosols dissipate in days or week
'"/>

Contact: Vince Stricherz
vinces@u.washington.edu
206-543-2580
University of Washington
2-Aug-1999


Page: 1 2 3

Related biology news :

1. University of Washington professors new book seeks to rewrite understanding of cell biology
2. Major grant to aid McGill University professors efforts to improve school science teaching
3. K-State, other universities to study how climate affects plant evolution
4. Modest climate change could lead to substantially more and larger fires
5. Evidence for the impact of climate change on deep-sea biodiversity
6. Duke study disputes idea that trees can relocate quickly in response to climate change
7. New version of premier global climate model released
8. Trapping carbon in soil key for protecting global food security, dealing with climate change
9. Limited climate tracking in European trees despite 10,000 years of postglacial warmth
10. Tracking climate change
11. First ever standards linking climate change, biodiversity and poverty seek global peer review

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


(Date:7/18/2020)... ... 2020 , ... Commercial launch readiness is a critical stage in a product ... or vaccine, the global economic downturn will only increase price pressures overall for the ... capturing full value from every product launch is critical. However, history shows that only ...
(Date:7/2/2020)... ... July 02, 2020 , ... ... publication detailing the use of its revolutionary NEXTGENPCR endpoint thermocycler to test ... 16 minutes. The article, titled "Ultra-fast one-step RT-PCR protocol for the detection ...
(Date:6/25/2020)... ... June 24, 2020 , ... eClinical Solutions ... data services that accelerate drug development, is collaborating with Karyopharm Therapeutics (Nasdaq: ... hospitalized patients with severe COVID-19. This is the first study of an XPO1 ...
Breaking Biology News(10 mins):
(Date:8/3/2020)... Ky. (PRWEB) , ... August 03, 2020 , ... Introducing ... products for transformative growth, , Known as MediVet Biologics since ... brand. , The new Ardent Animal Health will build on its base ...
(Date:7/31/2020)... ... July 29, 2020 , ... Diversified Technologies, Inc. has ... be configured to drive Klystrons, TWTs, IOTs, and magnetrons. , DTI Radar ... switches in a push-pull configuration; yielding fast fall time for a capacitive load. ...
(Date:7/31/2020)... ... July 29, 2020 , ... eSource has long been touted as ... cover the history of eSource, the reasons it did not take off as quickly ... site source, the industry is moving towards capturing data electronically for clinical trials and ...
(Date:7/22/2020)... TORONTO (PRWEB) , ... July 22, 2020 , ... Join ... and John Lorenc, Sr. Manager Regulatory Solutions, in a one hour live webinar ... is the regulating body in China for drugs and medical devices. Specifically, for medical ...
Breaking Biology Technology:
Cached News: