Colloquia Spring 2015Fall 2014 | Fall 2015
Colloquia are held in ATS room 101; Discussion will begin at 3:30pm. Refreshments will be served at 3:00pm in the coffee lounge. Please contact Thomas Birner [thomas at atmos.colostate.edu] for more information.
Fine-scale dynamical and microphysical processes of snowfall from shallow orographic clouds
May 8, 2015
Light snowfall often falls over mountains long after deep frontal disturbances have passed. We use high-resolution profiling radar observations over Colorado and Wyoming, as well as numerical simulations, to explore mechanisms of such pe...
Effects of Thunderstorms on Tropospheric Trace Gas Chemistry
Mary C. Barth
April 30, 2015
Thunderstorms are interesting from an atmospheric chemistry perspective because their convective outflow regions produce ozone in the upper troposphere, where ozone is radiatively active as a greenhouse gas. The ozone production comes ab...
Lightning Impacts on Airline and Airport Operations
April 24, 2015
Thunderstorms and lightning pose a safety risk to personnel working outdoors. Airport and airline operators, therefore, employ safety procedures that include observations and warnings of the onset and duration of lightning hazards. Ram...
Generating cells and elevated convection in winter storms - results from the Profiling of Winter Storms Experiment
Robert M. Rauber
April 23, 2015
In the 1950s, pioneering scientists used the new technology of vertically pointing radar to discover that the warm frontal and occluded sectors of winter cyclones were commonly topped by convective .generating cells. that produced snow s...
Tackling Climate Change via the Rapid Transition to Energy Efficiency and Renewable Energy Technologies
April 10, 2015
Climate change is increasingly being recognized as a growing environmental crisis that must be addressed. Studies have shown that the costs of addressing this problem are much less than the costs of dealing with the consequences. Because...
Aerosol research at a global air pollution hotspot - the Po Valley, Italy
Maria Cristina Facchini
April 3, 2015
The Po Valley is a hot spot for air pollution both for the emission sources due to the intense industrial, agricultural and trading activities and the orography of the Valley, surrounded on three sides by high mountain ranges, that favor...
Uncontrolled combustion of shredded tires in a landfill
Elizabeth A. Stone
March 27, 2015
In summer 2012, a landfill liner comprising an estimated 1.3 million shredded tires burned in Iowa City, Iowa. During the fire, continuous monitoring and laboratory measurements were used to characterize the gaseous and particulate emiss...
Elevated convective systems and extreme rainfall
March 13, 2015
In the central and eastern U.S., as well as other continental locations at midlatitudes around the world, warm-season heavy precipitation is most frequent at night. This suggests that the convection responsible for the heavy rainfall is...
Have we "resolved" the aerosol effects on deep convection problem?
March 6, 2015
A growing interest in the potential effects of aerosol perturbations on deep convective clouds has resulted in numerous publications over the past decade. These studies have primarily focused on aerosol-induced changes in updraft strengt...
The Formation of Tropical Cyclones
David J. Raymond
February 27, 2015
In this talk I will review the history of thought regarding the formation of tropical cyclones. The conditions required for their formation as presented by William Gray, John McBride, and Raymond Zehr are first discussed, followed by a ...
Hurricanes from Scratch
February 20, 2015
The upscale aggregation of convection is used to understand the emergence of rotating, coherent mid-tropospheric structures and the subsequent process of tropical cyclone formation. The CM1 model is integrated on an f-plane with uniform...
After Climate Change, What Next?
February 13, 2015
Climate change represents an enormous challenge for today's generations. Yet we are thinking too small if we conclude its primary lessons concern greenhouse gases or even energy sustainability. The deeper lesson is about the critical m...
The rain is askew: changes in the distributions of rain and vertical velocity
January 23, 2015