Microbes, rain, and climate

From the American Chemical Society Dust — and the microbes hitching rides on it — influences rain, climate SAN FRANCISCO, Aug. 13, 2014 — Dusty air blowing across the Pacific from Asia and Africa plays a critical role in precipitation patterns throughout the drought-stricken western U.S. Today, a scientist will present new research suggesting that…

Study: Large volcanic eruptions cause drought in eastern China

Via AGU, and the “science is settled” department, once again we learn things we didn’t know about climate. In most cases, the annual East Asian Monsoon brings heavy rains and widespread flooding to southeast China and drought conditions to the northeast. At various points throughout history, however, large volcanic eruptions have upset the regular behavior…

The law of unintended climate consequences at work – study says 23% of warming in Europe since 1980 due to clean air laws

(Via the HockeySchtick) A paper published today in Geophysical Research Letters finds that clean air laws which greatly reduced sulfur dioxide emissions explain 81% of the “brightening” of sunshine and 23% of the surface warming in Europe since 1980. However, the authors note “this phenomenon is however hardly reproduced by global and regional climate models.”

New paper: man-made aerosols have had a net cooling effect since beginning of industrial revolution

More aerosols, means more clouds, which means cooler temperatures. Now that we are cleaning up aerosols worldwide, this may explain why the Earth is getting slightly warmer – more sunlight reaches the surface A paper published today in Science claims the transition from “pristine” to “slightly polluted” atmosphere at the beginning of the industrial revolution…

Oops! ‘Dieselification’ of London due to CO2 regulations have increased actual air pollution

London’s Dirty Secret: Pollution Worse Than Beijing’s Reader Drew H. submits this story. It’s the law of unintended consequences at work. European Union efforts to fight climate change favored diesel fuel over gasoline because it emits less carbon dioxide, or CO2. However, diesel’s contaminants have swamped benefits from measures that include a toll drivers pay…

JPL Claim: Asian Pollution makes US Storms Worse

Story submitted by Eric Worrall A new study from NASA’s JPL claims Asian air pollution causes worse storms in North America, especially during winter. According to abstract, the study used a global climate-aerosol model to compare current conditions with modelled pre-industrial conditions. Lead author Yuan Wang, from the Jet Propulsion Laboratory at the California Institute…