ATOC Colloquium

Welcome!

All colloquia for the Fall 2023 semester will be held in-person and virtually over Zoom. Please refer to this page for the most updated schedule and information regarding the presentation format.

About the ATOC Colloquium

The Department of Atmospheric and Oceanic Sciences Colloquium will be held approximately every other Friday from 11:00 AM–Noon. Come early for coffee starting at 10:45 AM, and stay after for discussions during lunch.

Colloquia will alternate between the following two formats:

A. Full-length talk by a faculty member or invited speaker

B. Three conference-length talks by graduate students or post-docs

If you would like to nominate a speaker (including yourself), please email the Chair of the ATOC Colloquium Committee, Prof. Andrew Winters.

Upcoming Schedule

Fall 2023

Date	Format	Room	Speaker(s)	Title & Abstract	Zoom Info	Lunch Offered?
Friday 09/01/2023 11am MT	A	SEEC S228	Alexandra Jonko (LANL)	How will future climate change impact prescribed fire across the United States?	Recording: Link Passcode: aW4W!Y9s	Yes
Friday 09/15/2023 11am MT	B	SEEC S228	Ulla Heede (ATOC/CIRES) Michelle Maclennan (ATOC) Kara Hartig (Harvard)	Tropical Pacific Warming Patterns Influence Future Hydroclimate Extremes in the Americas Fieldwork on Thwaites Eastern Ice Shelf, Antarctica How Warmer Climates Prevent Continental Interiors from Dropping Below Freezing	Recording: Link Passcode: aSZVKn*9	Yes
Friday 09/29/2023 11am MT	A	SEEC S228	Pragallva Barpanda (NOAA/CIRES)	The role of subtropical Rossby waves in amplifying the divergent circulation of the Madden-Julian Oscillation (MJO)	Recording: Link Passcode: 7nKk^H49	Yes
Friday 10/13/2023 11am MT	A	SEEC S228	Isla Simpson (NCAR/CGD)	Observed humidity trends in dry regions contradict climate models	No recording available	Yes
Friday 10/27/2023 11am MT	B	SEEC S228	Emily Wein (ATOC) Giovanni Seijo (ATOC) Brandon Molina (ATOC)	Developing a Water Vapor Spectrometer for Measurements of Atmospheric Water Vapor and Future Applications of this Technology A CESM/MOM6 Regional Configuration of the Caribbean Sea Changes in the Mean State of the Tropical Pacific can Influence the Oscillatory Behavior of El Niño-Southern Oscillation (ENSO)	No recording available	Yes
Friday 11/10/2023 11am MT	A	SEEC S228	Jake Gristey (NOAA/CIRES/LASP)	Shedding Light on Solar Radiation Variability at Earth’s Surface	Recording: Link Passcode: B4%Dr5$r	Yes
Friday 12/08/2023 11am MT	A	SEEC C120	ESSS Student Poster Conference			Yes

Past colloquia

Spring 2023

Date	Format	Room	Speaker(s)	Title & Abstract	Zoom Info	Lunch Offered?
Friday 01/27/2023 11am MT	A	SEEC S228	Xinyue Wang (NCAR ASP/ACOM)	Stratosphere-Troposphere Coupling and its Role in Atmospheric Composition and Climate	Recording: Link	Yes
Friday 02/10/2023 11am MT	B	SEEC S228	Clairy Reiher (ATOC) Cole Persch (ATOC) Tessa Gorte (ATOC)	An Analysis of North American Polar-Subtropical Jet Superpositions that Coincide with High-Impact Weather Events The Impact of Orbital Precession on Carbon Flux in the Southern Ocean Antarctic Ice Sheet Discharge Drives Large Scale Southern Ocean Circulation Changes	Recording: Link	Yes
Friday 03/03/2023 11am MT	A	SEEC S228	Matthew Shupe (CIRES/NOAA PSL)	The MOSAiC Expedition for Understanding the Processes of Arctic Change	Recording: Link	Yes
Friday 03/10/2023 11am MT	A	SEEC S228	Yolanda Shea (NASA)	Using Earth-Reflected Solar Radiation to Identify and Unravel Climate Change Mysteries from Space	Recording: Link	Yes
Friday 03/24/2023 11am MT	A	SEEC S228	Melissa Moulton (NCAR/CGD)	From the Beach to the Sea and Back: How Pollutants, Nutrients, and Organisms Move in the Coastal Ocean	Recording: Link	Yes
Friday 04/14/2023 11am MT	B	SEEC S228	Vikas Hanasoge Nataraja (ATOC/LASP) Ziqi Yin (ATOC) Ethan Murray (ATOC/LASP)	Using Machine Learning to Improve Cloud Retrievals High-Resolution, Fully-Coupled Simulations of the Greenland Ice Sheet in a Future, Strong Warming Scenario Aircraft Measurements of Convective Eye and Eyewall Clouds in Tropical Cyclone Sam	No recording available	Yes
Friday 04/28/2023 11am MT	A	SEEC S228	Mike Alexander (NOAA)	Marine Heatwaves: Their Impacts, Causes, Predictability and Response to Climate Change	Recording: Link	Yes

Fall 2022

Date	Format	Room	Speaker(s)	Title & Abstract	Zoom Info	Lunch Offered?
Friday 09/02/2022 11am MT	A	SEEC S228	Kris Karnauskas (ATOC/CIRES)	Upwelling and Equatorial Islands: Old Theories and the Ocean Data Revolution	Recording: Link Passcode: G$UWBHW2	Yes
Friday 09/16/2022 11am MT	B	SEEC S228	Lucas Howard (ATOC) Jonah Shaw (ATOC/CIRES) Margaret Duffy (NCAR/ASP)	A Hybrid Data Assimilation Method Using a Convolutional Neural Network and the Ensemble Kalman Filter Emerging Changes in Arctic Outgoing Longwave Radiation The Influences of Atmospheric Parameters and SST Warming Pattern on Radiative Feedbacks in CAM6	Recording: Link Passcode: x8B5%8eQ	Yes
Friday 09/30/2022 11am MT	A	SEEC S228	Hansi Singh (Univ. of Victoria)	Modeling Hierarchies and Data-Driven Methods in Coupled Climate Dynamics: Understanding Regional Sensitivity, Global Teleconnections, and their Interplay	Recording: Link Passcode: Er.5nZXV	Yes
Friday 10/14/2022 11am MT	B	SEEC S228	Rebecca Baiman (ATOC) Hristo Chipilski (NCAR/ASP) Carlos Martinez (NCAR/ASP)	A Circumpolar View of Synoptic Drivers of Atmospheric Rivers Reaching Antarctica Invertible Neural Networks for Nonlinear Ensemble Filtering An Evaluation of the Seasonal Hydroclimate of the Caribbean within CESM and other CMIP6 Models	Recording: Link Passcode: i!r%W.U3	Yes
Friday 10/28/2022 11am MT	A	SEEC S228	Alia Khan (Western Washington Univ.)	From Field Sites to Satellites: Exploring the Role of Black Carbon and Algae on Snow Albedo and Melt in a Changing Climate	Zoom recording not available.	Yes
Friday 11/11/2022 11am MT	B	SEEC S228	Timothy Higgins (ATOC) Erin Guderian (ATOC) Monica Morrison (NCAR/ASP)	An Improved Understanding of the Impacts of Anthropogenic Forcing on Extreme Atmospheric Rivers on the US West Coast Investigating the Relative Forcing of Tropical Ocean SST on Asian Monsoon Precipitation using LIM The Logic of Actionable Science: Earth System Model Inadequacies and Epistemic Risk	Recording: Link Passcode: U.+m83mU	Yes
Friday 12/09/2022 10am MT	A	SEEC C120	ESSS Student Poster Conference			Yes

Spring 2022

Date	Format	Room	Speaker(s)	Title & Abstract	Zoom Info	Lunch Offered?
Friday 01/21/2022 11am MT	A	Zoom Only	Sebastian Schmidt (ATOC)	Clouds, Photons, and New Missions to Earth – a Glimpse into Atmospheric Radiation Science at ATOC and LASP	Recording: Link Passcode: +*hO6xX6	No
Friday 02/04/2022 11am MT	B	SEEC S228	Mikell Warms (ATOC) Megan Thompson-Munson (ATOC) Chris Wyburn-Powell (ATOC/INSTAAR)	Distribution of Snowfall in the Payette Mountains based on a High-Resolution Model: Implications for Cloud Seeding Observed and Modeled Firn Properties on the Greenland Ice Sheet Understanding Simulated and Observed Internal Variability in Arctic Sea Ice	Recording: Link Passcode: R7#zbh.f	Yes
Friday 02/18/2022 11am MT	A	SEEC S372A/B	Melissa Breeden (CIRES/NOAA/PSD/CSD)	Exploring Seasonal Changes in 2-meter Temperature Forecasts of Opportunity over North America	Zoom: Link Passcode: 4UA3?Wad	Yes
Friday 03/04/2022 11am MT	B	SEEC S228	Jeremy Klavans (ATOC) Devon Dunmire (ATOC)	Is the Pacific Decadal Oscillation Externally Forced? The Juneau Icefield Research Program Experience	Zoom: Link Passcode: *6irfw5N	Yes
Friday 03/11/2022 11am MT	A	SEEC S228	Nicola Bodini (NREL)	How Can We Leverage Machine Learning in the Wind Energy Sector?	Zoom: Link Passcode: 1g++xwf@	Yes
Friday 04/08/2022 11am MT	A	SEEC S228	Yassir Eddebbar (Scripps)	Ocean Oxygen Dynamics and Variability Across Scales: Insights from an Earth System Model	Recording Unavailable per Speaker Request	Grad Students Only
Friday 04/22/2022 11am MT	B	SEEC S228	Mckenzie Dice (ATOC) Sam Mogen (ATOC) Andrew Buggee (ATOC)	Assessing Physical Relationships Between Atmospheric State, Fluxes, and Boundary Layer Stability at McMurdo Station, Antarctica Ocean biogeochemical signatures of the North Pacific Blob Estimating Vertical Profiles of Cloud Microphysical Properties from Space	Zoom: Link Passcode: 4ExY7c&5	Yes

Fall 2021

Date	Format	Room	Speaker(s)	Title & Abstract	Zoom Info	Lunch Offered?
Friday 09/03/2021 11am MT	JESS-ATOC	SEEC S228	Maria Molina (NCAR)	Robustness of Deep Learning in a Changing Climate	Recording: Link Passcode: $emV1Lg#	Yes
Friday 09/17/2021 11am MT	B	SEEC N128	Yiming Guo (NC State) Lei Zhang (ATOC) Jed Lenetsky (ATOC/INSTAAR)	Mesoscale Air-Sea Interaction and Eddy Potential Energy Budget: Is it Important? Indian Ocean Dipole Leads to Atlantic Niño The Bering Strait and Seasonal Sea Ice Prediction	Recording: Link Passcode: z06Q?8aK	Yes
Friday 10/01/2021 11am MT	A	SEEC S228	Benét Duncan (CIRES)	Science for What? Developing Usable Climate Science for Decision Makers	Recording: Link Passcode: sr.?4@TK	Yes
Monday 10/04/2021 12pm MT	JESS-INSTAAR	Zoom	Aradhna Tripati (UCLA)	Carbonate Clumped Isotope Geochemistry as an Applied Tool in Paleoclimate, within an Inclusive Science Framework	N/A	N/A
Friday 10/15/2021 11am MT	B	SEEC S228	Eric Keenan (ATOC) Nicola Maher (ATOC/CIRES) Danni Du (ATOC)	Detailed snow modeling reveals dynamic drivers of Antarctic mass loss Modulation of ENSO teleconnections over North America by Pacific decadal variability Examination of the impact of ocean subsurface data assimilation on MJO forecasts over the Maritime Continent	Recordng: Link Passcode: uZXhKj0^	Yes
Friday 10/29/2021 11am MT	A	SEEC S228	Gustavo Marques (NCAR)	Improving the representation of oceanic processes in NCAR's next-generation climate model	Zoom: Link Passcode: w5Q8G#dN	Yes
Friday 11/05/2021 3:30pm MT	JESS-GEOG	GUGG 205	Karen Bailey (CU/ENVS)	Climate Change, Social Capital and Sustainable Livelihoods in Conservation Landscapes	Zoom: Link	N/A
Friday 11/12/2021 11am MT	A	SEEC S228	Sara Sanchez (ATOC)	Pacific-Paleo Climate Variability	Recording Not Publicly Available	Yes
Friday 12/03/2021 11am MT	A	C120	ATOC Student Poster Conference	TBA	TBA	Yes

Spring 2021

Date	Format	Room	Speaker(s)	Title & Abstract	Zoom Info
Friday 01/15/2021 *1pm MT*	JESS –ATOC	Zoom	Solomon Bililign (NCAT)	Optical Properties and Emission Factors of Biomass Burning Aerosols from Sub-Saharan Africa Biomass Fuels	Recording: link Passcode: &Bsgb6Q+
Friday 02/05/2021 12pm MT	JESS – GEOG	Zoom	Reza Khatami (U. Florida)	Characterizing Land Cover and Vegetation Dynamics using Earth Observation Systems	Recording: link
Friday 02/19/2021 11am MT	A	Zoom	Sara Sanchez (ATOC)	Reconstructing the ENSO Response to the Mystery and Tambora Eruptions with Coral Based Data Assimilation	Recording: Link Passcode: aq#.1Mc?
Friday 03/05/2021 11am MT	A	Zoom	Gerald Meehl (NCAR)	Initialized Earth System Prediction from Subseasonal to Decadal Timescales	Recording: Link Passcode: ^t6BG=KG
Monday 03/15/2021 12pm MT	JESS – INSTAAR	Zoom	Aisha Morris (NSF)	Creating a Culture of Inclusion for Building a Strong Geoscience Community	Canceled due to Snow Day
Friday 03/19/2021 11am MT	B	Zoom	ATOC Student "Poster" Conference	Program	Recording: Link Passcode: MSm6$&xA
Friday 04/02/2021 11am MT	A	Zoom	Nicole Schlegel (JPL)	Models and Data: A Critical Relationship for Constraining Uncertainty in Ice-Sheet Model Projections	Recording: Link Passcode: G@6xicrQ
Wednesday 04/14/2021 4pm MT	JESS – GEOL	Zoom	Paula Welander (Stanford)	Synthesis of Sponge Sterol Lipid Fossils: Who Makes What and Why Does it Matter?	Zoom: https://cuboulder.zoom.us/j/7420931141 Passcode: geotalk

Fall 2020

Date	Format	Room	Speaker(s)	Title & Abstract	Zoom Info
Friday 09/04/2020 11am MT	JESS –ATOC	Zoom	Curtis Walker (NCAR)	Surface Transportation Meteorology: Weather Decision Support	https://cuboulder.zoom.us/j/96781229960 Meeting ID: 967 8122 9960 Passcode: weather
Friday 09/18/2020 11am MT	A	Zoom	Gina Jozef (ATOC) and Jonathan Hamilton (Aerospace Engineering)	Unmanned Aircraft Operations and Day-to-Day Life on MOSAiC: Legs 3 and 4	https://cuboulder.zoom.us/j/94802889201 Meeting ID: 948 0288 9201 passcode: mosaic
Monday 10/05/2020 12pm MT	JESS – INSTAAR	Zoom	Raymond Najjar (Penn State)	Regional and Global Views of Carbon Cycling in Coastal Waters	https://cuboulder.zoom.us/j/91413222798 Meeting ID: 914 1322 2798 Password: #INSTAAR#
Friday 10/16/2020 11am MT	B	Zoom	Hannah Zanowski (ATOC/INSTAAR) Dillon Amaya (ATOC/CIRES) Jen Kay (ATOC/CIRES)	Arctic Freshwater Storage and Export in CMIP6 Models Are Long-Term Changes in Mixed Layer Depth Influencing North Pacific Marine Heatwaves? Quantifying the Influence of Cloud Radiative Feedbacks on Arctic Surface Warming using Cloud Locking in an Earth System Model	Recording: Link
Friday 10/30/2020 11am MT	A	Zoom	Peter Pilewskie (ATOC)	Libera: Continuity of Earth's Radiation Budget Climate Data Record	https://cuboulder.zoom.us/j/99802151033 Meeting ID: 998 0215 1033 Passcode: radiation
Wednesday 11/04/2020 4:10pm MT	JESS – GEOL	Zoom	Jabrane Labidi (IPGP)	Hydrothermal¹⁵N¹⁵N Abundances: Deception and Clarity on the Origins of Planetary Nitrogen	https://cuboulder.zoom.us/j/7420931141 Meeting ID: 742 093 1141 Passcode: geotalk
Friday 11/13/2020 11am MT	n/a	Zoom	ATOC Fest		https://cuboulder.zoom.us/j/91532184467 Meeting ID: 915 3218 4467 Passcode: FEST
Friday 12/04/2020 12pm MT	JESS – GEOG	Zoom	Lani Tsinnajinnie (U. New Mexico)	Collaborative Hydrologic Research on the Navajo Nation: Investigating the Role of Mountainous Springs in Watershed Resilience	https://youtu.be/6Q25zjV5tpk

Spring 2020

Date	Format	Room	Speaker(s)	Title & Abstract
01/24/2020	A	SEEC S228	James Brasseur (ASEN/CU)	The surprising transition in atmospheric boundary layer turbulence structure from neutral stability to the development of large-scale atmospheric rolls
02/07/2020	B	SEEC S228	Connor Nelson Nander Wever Cenlin He (NCAR)	Observations of environments supporting moist convective initiation during RELAMPAGO-CACTI Snow modelling in polar regions Enhanced snow absorption and albedo reduction by dust-snow internal mixing: modeling and parameterization
02/28/2020	A	SEEC S228	Marika Holland (NCAR)	Perspectives on predicting Arctic sea ice from seasons to centuries
03/06/2020	A	SEEC S228	Rochelle Worsnop (NOAA)	Use of statistical post-processing to improve extended-range fire-weather forecasts
03/20/2020	B	SEEC S228	Canceled	Canceled
04/10/2020	A	SEEC S228	Canceled	Canceled
04/24/2020	B	SEEC S228	Canceled	Canceled

Fall 2019

Date	Format	Room	Speaker(s)	Title & Abstract
09/06/2019	A	SEEL 303	Jeffrey Weiss (CU Boulder)	Climate oscillations and non-equilibrium physics
09/20/2019	B	SEEC S372A/A	Matt Cann Matt Gentry Elina Valkonen	The Role of Moisture Pathways on Snowfall Amount and Distribution in the Southwest Central Mountains of Idaho Considering the Influence of Clouds on Ocean Carbon Uptake A Novel Intensity Metric for Arctic Cyclones – A Comparison with the more Traditional Metrics
10/04/2019	A	SEEL 303	Cathy Smith (NOAA)	NOAA/ESRL PSD Web-Based Weather and Climate Analysis Tools
10/18/2019	B	SEEL 303	Nick Luchetti Tessa Gorte Abigail Smith	Evaluating Gust Front Characteristics Near Complex Terrain Scoring Antarctic Surface Mass Balance in Climate Models to Refine Future Projections Seasonal Transitions of Arctic Sea Ice over the Satellite Era
11/01/2019	A	SEEL 303	Brooke Anderson (CSU)	Hurricanes and Health: The Association between Cardiorespiratory Medicare Hospitalizations and Tropical Cyclone Exposure
11/15/2019	B	SEEL 303	Kristen Aponte / Carolyn Brinkworth (UCAR)	Diversity, Equity, and Inclusion Efforts at the University Corporation for Atmospheric Research (UCAR)
12/06/2019	-	SEEC C120	ESSS Poster Conference

Spring 2019

Date	Format	Room	Speaker(s)	Title & Abstract
01/24/2019	A	SEEC S228 (Sievers)	Elizabeth Barnes (CSU)	Causal pathways driving sub-seasonal jet-stream variability
02/07/2019	B	SEEC S228 (Sievers)	Nicola Bodini, Devon Dunmire, Jessica Tomaszewski	Towards a better understanding of turbulence dissipation rate (Bodini) In situ and remote observations of a subsurface lake collapse in East Antarctica (Dunmire) Quantifying wake impacts on downwind wind farms using the WRF Wind Farm Parameterization (Tomaszewski)
02/22/2019	A	SEEC 372 A/B	George Kiladis (NOAA)	Skill and Impact of Tropical Variability in Two Operational Weather Prediction Models
03/08/2019	A	SEEC S228 (Sievers)	Tristan L'Ecuyer (UW-Madison)	PREFIRE: Filling a Startling Gap in Polar Climate Observation
03/22/2019	A	SEEC S228 (Sievers)	Karen Kosiba (CSWR)	43°N to 34°S: 77 degrees of weather
04/12/2019	B	SEEC S228 (Sievers)	Ren Smith, Kang Yang, Ryan Harp	The Role of Radiation in Tropical Cyclogenesis (Smith) Northern Hemisphere Upper Troposphere “Dust Belt” from Improved CALIPSO Lidar Observations (Wang) Projecting Future Temperature-Driven Changes in Crime (Harp)
04/26/2019	A	SEEC S228 (Sievers)	Brian O'Neill (University of Denver)	Does half a degree of global warming matter? Results from the BRACE1.5 study

Fall 2018

Date	Format	Speaker(s)	Title
09/07/2018	A*	Cora Randall & Brian Toon (CU Boulder)	Clouds on the Edge of Space: Insight from the NASA Aeronomy of Ice in the Mesosphere (AIM) Mission (Randall) The environmental impacts of nuclear war are far more damaging than the explosions and could kill 90% of the Earth's population (Toon)
09/21/2018	B	Ariel Morrison, Jason West, Steffen Mauceri	Observed and Simulated Cloud Response to Arctic Sea Ice Loss from CALIPSO and CESM1 (Morrison) The Role of Oceanic Processes in the Initiation of Indian Summer Monsoon Intraseasonal Oscillations over the Indian Ocean (West) Aerosol Retrieval from Hyperspectral Imagery over India (Mauceri)
10/05/2018	A	Nikki Lovenduski (CU Boulder)	A Change in the Forecast: Ocean Biogeochemistry over the Next Decade
10/19/2018	B	Vineel Yettella, Bobby Wallace, Lynn Montgomery	An ensemble covariance framework for quantifying forced climate variability and its time of emergence (Yetella) Hidden Water: Investigating a firn aquifer in Southeast Greenland (Montgomery) Deep Hail Accumulations: How can we identify storms that produce the largest threat? (Wallace)
11/02/2018	A	Dan McGrath (CSU)	How much is really out there? Forays into measuring snow accumulation on glaciers and implications for glacier mass balance
11/16/2018 (Room change: SEEL303)	B	Riley Brady, Guo Lin, Maaike Izeboud	On the role of climate modes in modulating the air-sea CO2 fluxes in Eastern Boundary Upwelling Systems (Brady) Interactions Between a Nocturnal MCS and the Stable Boundary Layer, as Observed by an Airborne Compact Raman Lidar During PECAN (Lin) Response of Greenland Ice Sheet firn to cloud radiative forcing (Izeboud)
11/30/2018		ESSS Poster Conference	TBD

* The inaugural colloquium was given by two faculty members.

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ATOC Colloquium

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