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Colloquia Spring 2010

Fall 2009 | Fall 2010

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] for more information.

Weather extremes in a changing climate

Gerald Meehl (NCAR)
April 15, 2010

Weather extremes are reviewed in the context of behavior in present-­day climate compared to climate change projections for the future. A relatively small shift in the average produces a very large change in extremes—more extre...

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Aerosol properties and processes across Europe and their impacts: a multi-aircraft study during EUCAARI

Hugh Coe (Univ. of Manchester)
April 8, 2010

The EUCAARI project aims to advance our understanding of climate and air quality by integrating laboratory studies, both short and long term field investigations, satellite data, and modeling at regional and global scales. Airborne obser...

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Caribbean climate, weather variability and interactions

Mark Jury (Univ. Puerto Rico Mayagüez)
April 1, 2010

This study of hurricanes passing through the Caribbean in the period 1950–2005 reveals that seasons with more intense hurricanes occur with the onset of Pacific La Nina events and when Atlantic SSTs west of Africa are above normal...

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The Water Cycle, Moist Processes and Climate Change: What might be predictable, where challenges lie, and what we glean from new Earth observations

Graeme Stephens
March 25, 2010

The planet’s water cycle is thought to be ‘accelerating’ under the scenario of global warming with projected increases in the occurrence of heavier precipitation among other expected responses. The physical basis for ...

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The space-time cascade structure of the atmosphere and its numerical models

Shaun Lovejoy (McGill Univ.)
March 4, 2010

In spite of the unprecedented quantity and quality of meteorological data and models, there is still no consensus about either the atmosphere’s or the models’ elementary statistical properties as functions of scale in eithe...

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Aerosol effects on Clouds and Precipitation: Buffered states, runaway states, and self-organization

Graham Feingold
February 25, 2010

It has been hypothesized that changes in the concentration of the aerosol can alter precipitation processes, change cloud lifetime and hence the radiative forcing of the climate system. Despite decades of research, it has proven frustrat...

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Low-level clouds and climate change

Amy Clement (Miami)
February 18, 2010

Feedbacks involving low-level clouds remain a primary cause of uncertainty in global climate model projections. This issue is addressed by examining changes in low-level clouds over the NE Pacific in observations and climate models. Deca...

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The sensitivity of precipitation in low clouds to aerosol perturbations

Robert Wood (UW)
February 4, 2010

It is becoming apparent that even modest amounts of precipitation falling from low clouds can have a profound effect upon their coverage, thickness, and organization. It is therefore imperative that we understand the frequency and streng...

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Adjoint-Fueled Advances in Error Estimation for Multiscale, Multiphysics Problems

Donald Estep (CSU)
January 28, 2010

The range of scales and complexity in multiscale, multiphysics systems means that obtaining accurate numerical simulations is extremely difficult. Consequently, there is an increasing - even strident - demand for quantification of error ...

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