Archives par mot-clé : Aerosols

Wildfire aerosols remain longer in atmosphere than expected

by Michigan Technological University, October 2, 2018 in ScienceDaily

… “Wildfires are such a huge source of aerosol in the atmosphere with a combination of cooling and warming properties, that understanding the delicate balance can have profound consequences on how accurately we can predict future changes,” says Claudio Mazzoleni, professor of physics, and one of the authors of the paper.

As wildfires increase in size and frequency in the world’s arid regions, more aerosol particles could be injected into the free troposphere where they are slower to oxidize, contributing another important consideration to the study of atmospheric science and climate change.

NASA finds something else climate models are missing…. forcing from ‘Secondary Organic Aerosols’

by Anthony Watts, March 27, 2018 in WUWT

A new paper published by NASA by Tsigaridis and Kanakidou suggests that climate models have missed the forcing effects of organic aerosols, such as VOC’s from trees, oceans, and other sources that combine chemically in the atmosphere to create new compounds. Known as Secondary organic aerosols (SOA), they say “SOA forcing could exceed that of sulfate and black carbon”.

Understanding the climate impact of natural atmospheric particles

by University of Leeds, December 4, 2017 in ScienceDaily

Scientists have quantified the relationship between natural sources of particles in the atmosphere and climate change. Their research shows that the cooling effect of natural atmospheric particles is greater during warmer years and could therefore slightly reduce the amount that temperatures rise as a result of climate change.Share: