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Colloquia Spring 2017

Fall 2016 | Fall 2017

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.

Understanding storm track shifts across a range of timescales

Tiffany Shaw
April 28, 2017

Storm tracks are regions where extratropical cyclones occur most frequently, they control weather and climate in the extratropics. Storm tracks shift latitudinally in response to energetic perturbations across a range of timescales. On s...

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Digital Holography of Aerosol Particles

Matthew J. Berg
April 21, 2017

Methods to determine the physical properties of aerosol particles is important in a vast array of scientific and applied contexts. Due in part to the difficulty of collecting such particles, a variety of contact-free techniques have been...

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Improving geophysical system understanding and modelling by exploring nonlinear data assimilation

Peter Jan van Leeuwen, Visiting ATS from the University of Reading
March 30, 2017

Geophysical systems can be characterised as complex, nonlinear and high dimensional. All of these provide major challenges to understanding and modelling. To explore observations and existing knowledge encoded in numerical models to thei...

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Measuring and interpreting faunal responses to climate in the Intermountain West

Erica Fleishman, CSU Professor, Department of Fish, Wildlife and Conservation Biology
March 24, 2017

There is considerable research and management interest in whether and how native faunas are responding to climate change. Evaluating whether empirical data support range-shift hypotheses is complicated by variation in climate, difference...

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Remote Sensing of the Atmosphere from the Troposphere to the Edge of Space

Katrina Bossert
March 9, 2017

of the atmosphere considered the edge of space near ~80-100 km. For some aspects of the atmosphere, studying coupling between different altitudes and regions is important for a more in depth understanding. Gravity waves are one aspect in...

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Energetic constraints on global climate

Aaron Donohoe
March 6, 2017

Spatial variations in the solar heating of the climate system drive the atmospheric and oceanic circulation and set patterns of temperature and precipitation. This presentation explores the processes that determine the absorption of sola...

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Using remote sensing observations to advance understanding of cloud-aerosol-precipitation-radiation interactions

Christine Chiu
March 2, 2017

Currently, the scientific community is unable to identify how characteristics of clouds will alter as the climate warms in response to emissions of greenhouse gases from human activities, and to what extent changes in cloud characteristi...

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FEATURES BASED ASSESSMENTS OF WARM SEASON CONVECTIVE PRECIPITATION FORECASTS FROM THE HIGH RESOLUTION RAPID REFRESH MODEL

Janice Bytheway
February 24, 2017

Forecast models have seen vast improvements in recent years, via increased spatial and temporal resolution, rapid updating, assimilation of more observational data, and continued development and improvement of the representation of the a...

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Mean precipitation change from invariant radiative cooling

Nadir Jeevanjee
February 23, 2017

Global warming simulations robustly show that mean precipitation increases at 1-3% per Kelvin, but we do not know what sets these values. Mean precipitation is constrained by radiative cooling, however, and we demonstrate here that radia...

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Recent Advances in University of Wyoming King Air Observation Capabilities

Zhien Wang
February 17, 2017

University of Wyoming King Air (UWKA) is a part of NSF-supported Lower Atmosphere Observing Facilities (LAOF). Through multi-year development efforts, UWKA has equipped with integrated observation capabilities for cloud dynamics and micr...

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Recent Advances in University of Wyoming King Air Observation Capabilities

Zhien Wang
February 17, 2017

University of Wyoming King Air (UWKA) is a part of NSF-supported Lower Atmosphere Observing Facilities (LAOF). Through multi-year development efforts, UWKA has equipped with integrated observation capabilities for cloud dynamics and micr...

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Deep Machine Learning for High-Impact Weather Forecasting

David John Gagne
February 10, 2017

The weather forecasting process has grown more complex in recent years with the growing amount of observational data and model output available to weather forecasters and the trend toward providing more impact-based decision support serv...

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Seasonal Variability of Warm Boundary Layer Cloud and Precipitation Properties in the Southern Ocean as Diagnosed from A-Train and Ship-Based Remote Sensing Data

Jay Mace
February 3, 2017

The extensive cloudiness and resulting high albedo of the Southern Oceans (SO) are predominantly due to the occurrence of widespread marine boundary layer (MBL) clouds. Recent work finds correlations between biogenically enhanced cloud c...

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Pressure perturbations in cumulus convection

John Peters
January 20, 2017

Pressure perturbations are regions of anomalously low or high pressure in deep convection and play key roles in modulating the magnitude and distribution of vertical velocities within cumulus clouds. A cloud’s vertical momentum budget ...

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