Justin J. Wettstein

EDUCATION
Justin J. Wettstein
Bjerknes Centre for Climate Research
Allégaten 55, 5007-Bergen, Norway
(+47) 40 28 82 93 (mobile)
justin.wettstein@bjerknes.uib.no
Ph.D. University of Washington, Atmospheric Sciences 2007
Storm Track Variability and Interaction with the Background Flow on Daily, Interannual and Climate Change Time Scales
John M. Wallace (chair), Dennis L. Hartmann, David S. Battisti, Eric J. Steig and Stephen G. Warren
M.P.A. University of Washington, Evans School of Public Affairs (Advisor: David Layton) 2007
The Effect of Incorporating Climate Variability into a Simple Economic Model to Estimate Efficient Climate Policy
M.S. University of Washington, Atmospheric Sciences (Advisor: John M. Wallace) 2003
A Physically Consistent Long-term Reconstruction of the Northern Annular Mode using Tree Rings
M.S. Stanford University, Civil and Environmental Engineering (Advisor: Paul Roberts) 1998
B.S. University of Oklahoma, Environmental Engineering (with special distinction) 1997
Research advisors: David A. Sabatini, Robert C. Knox
CORE RESEARCH SKILLS AND INTERESTS
Atmospheric circulation: theory-based studies of observations and model simulations
particular interests: wave-mean flow interactions, relationships between storm track and jet variability
Statistical methods: judicious application of diverse statistical tools in geophysics research
particular interests: objective analysis, time series approaches, multivariate and eigenvector problems
Climate dynamics: sensitivity of the physical climate system to large-scale and long-term forcing
simulated changes to the jets, storm tracks and their interaction in different climates
particular interests: oceanic and radiative forcing of moisture content; tropical, midlatitude and polar responses
physical structure of atmospheric change and variability from glacial to greenhouse climates
Climate policy: costs and benefits of climate change and variability; economically efficient climate policy
SELECT HONORS AND AWARDS
2009 Co-chair: American Geophysical Union Fall Meeting Oral Session: Atmospheric Dynamics II
2009 Successfully funded Internal Research Grant: Bjerknes Centre for Climate Research
“Testing Atmosphere and Ocean / Atmosphere Responsiveness in the Bergen Climate Model”
2006 Scholarship: American Meteorological Society Summer Policy Colloquium
2003 Student presentation awards (2): American Geophysical Union Fall Meeting
1999 Jule Charney Prize for select entering graduate students, Massachusetts Institute of Technology (declined)
1997 National Science Foundation Graduate Research Fellowship
Full cost-of-living stipend and tuition allowance
1993 National Merit Scholar: Undergraduate scholarship
Top 0.5% of college-bound students; full cost-of-living stipend and tuition waiver at the Univ. of Oklahoma

ACADEMIC RESEARCH EXPERIENCE
2008-Present Post-Doctoral Researcher: Bjerknes Centre for Climate Research (Bergen, Norway)
Supervisors: Nils Gunnar Kvamstø and Eystein Jansen
Justin J. Wettstein, page 2 of 5
• Prepare research to improve our understanding of North Atlantic climate variability
• Analyze observations and reanalyses for insight into atmospheric wave-mean flow interaction theory
• Develop and evaluate general circulation model simulations of very different climate states
• Initiate a project on the thermodynamic and dynamic role of moisture in the atmospheric circulation
• Co-supervise graduate students at the University of Bergen’s Geophysical Institute, currently:
Francesco Pausata (Ph.D. candidate) and Solbjørg Apeland and Kristen Ravnestad (M.S. candidates)
2004-2007 Research Assistant / Ph.D. candidate: Atmospheric Sciences, University of Washington (Seattle, WA)
Primary Supervisor: John M. Wallace Co-supervisors: Dennis L. Hartmann, David S. Battisti and Eric J. Steig
• Identified preferred patterns of storm track variability in both the Northern and Southern Hemispheres
• Documented via statistical and dynamical arguments that storm tracks and jets are fundamentally covariant
• Illustrated the unique seasonality of storm track variability in the North Pacific and Southern Hemisphere
• Extrapolated the influence of ice sheets, greenhouse forcing and incoming solar radiation on the structure of
the mean atmospheric jets and on the coupled storm track / jet covariability
2002-2007 M.P.A. Graduate student: Evans School of Public Affairs, University of Washington (Seattle, WA)
Primary Supervisor: David S. Layton Co-supervisor: Alison Cullen
• Evaluated a suite of simplified economic optimization models used to estimate efficient climate policy
• Incorporated alternate damage function parameterizations to account for changes in variability and extremes
• Completed graduate coursework in economics, policy analysis and organizational management
2000-2003 Research Assistant / M.S. student: Atmospheric Sciences, University of Washington (Seattle, WA)
Primary Supervisor: John M. Wallace Co-supervisors: David S. Battisti, Eric J. Steig, Stephen G. Warren
• Developed a novel physically-based reconstruction of the Northern Annular Mode using annual tree ring data
• Validated proxies, reconstruction methods and frequency signals by testing for robust indicators of skill
• Processed proxies to reduce noise and enhance signal by looking for coherent site-to-site variability
• Included ice core data in the reconstructions (post-M.S.)
1999-2000 Visiting Scientist: Environmental & Societal Impacts Group: National Center Atmos. Research (Boulder, CO)
Supervisor: Linda O. Mearns
• Analyzed the North Atlantic Oscillation’s influence on means, variances and extremes
• Organized results for cooperative studies on the physiological response in different tree species
1994-1997 Research Assistant: Civil Engineering and Environmental Science, University of Oklahoma (Norman, OK)
Co-supervisors: Robert C. Knox and David A. Sabatini
• Performed laboratory experiments on the physics and chemistry of multiphase flow in mixed media
• Participated in local and remote field research on enhanced remediation technologies
• Supervised lab and field activities for visiting Research Experiences for Undergraduates (REU) participants

Justin J. Wettstein, page 3 of 5
PUBLICATIONS, SUBMITTED MANUSCRIPT AND MANUSCRIPTS IN FINAL PREPARATION
Wettstein, J.J. The Evolution, Persistence and Dynamical Forcing of Jet Variability Associated with Day-to-day
Storm Track Variability. In final preparation: Journal of the Atmospheric Sciences.
Wettstein, J.J. and C. Li. The Frequency Dependence of Annular Variability in the Atmosphere. In final
preparation: Science.
Wettstein, J.J., J.S. Littell, J.M. Wallace and Z. Gedalof. Coherent Climate Signals in Northern Hemisphere Tree
Ring Widths. Submitted: Journal of Climate.
Wettstein, J.J. and C. Li. Eddy-driven and Subtropically-influenced Jet Variability Structures in the Observed
Three-dimensional Zonal Wind Field. In review, Journal of Climate.
Athanasiadis, P.J., J.M. Wallace and J.J. Wettstein. Patterns of Jet Stream Wintertime Variability and their
Relation to the Storm Tracks. Journal of the Atmospheric Sciences 67: 1361-1381.
Wettstein, J.J. and J.M. Wallace. Observed Patterns of Month-to-Month Storm Track Variability and their
Relationship to the Background Flow. Journal of the Atmospheric Sciences 67: 1420-1437.
Pausata, F.S.R., C. Li, J.J. Wettstein, K.H. Nisancioglu and D.S. Battisti, 2009. Changes in Atmospheric
Variability in a Glacial Climate and the Impacts on Proxy Data: A Model Intercomparison. Climate of the Past 5:
489-502.
Wettstein, J.J., 2007. Storm Track Variability and Interaction with the Background Flow on Daily, Interannual and
Climate Change Time Scales. Ph.D. dissertation, University of Washington (advisor: J.M. Wallace).
Wettstein, J.J., 2003. A Physically Consistent Long-term Reconstruction of the Northern Annular Mode Using Tree
Rings. Master of Science thesis, University of Washington (advisor: J.M. Wallace).
Wettstein, J.J. and L.O. Mearns, 2002. The Influence of the North Atlantic--Arctic Oscillation on Mean, Variance
and Extremes of Temperature in the Northeastern United States and Canada. Journal of Climate 15: 3586-3600.
OTHER MANUSCRIPTS IN PREPARATION
Li, C. and Wettstein, J.J. Teleconnections as a Result of Changed Storm Tracks and Jets in a Variety of Simulated
Climates. In preparation: Journal of Climate.
Wettstein, J.J., F. Codron and C. Li. The Seasonality of Observed Storm-Jet Interactions in the North Pacific and
Southern Hemisphere. In preparation: Journal of Climate.

SIGNIFICANT PRESENTATIONS
Justin J. Wettstein, page 4 of 5
May 5, 2010 Eddy-driven and Subtropically-influenced Jet Variability Structures in the Observed 3-D Zonal Wind Field
Wettstein, J.J. and Li, C. EGU General Assembly 2010: Vienna, Austria (oral presentation)
Mar. 23, 2010 Invited talk: Climate Modeling and Atmospheric Processes Important for the Surface Ocean
Wettstein, J.J. European Coastal Sea Operational Observing and Forecasting System Final Meeting (Istambul, Turkey)
Jan. 11, 2010 Invited talk: Altered Atmospheric Variability in Different Climates--Causes and Effects
Wettstein, J.J. Simon Fraser University, Department of Geography (Vancouver, Canada)
Dec. 18, 2009 The Evolution and Persistence of Anomalies in Atmospheric Jets Associated with Baroclinic Wave Forcing
Wettstein, J.J. AGU Fall Meeting: San Francisco, USA (oral presentation)
Dec. 14, 2009 Extratropical Atmospheric Teleconnections in a Range of Climates
Li, C. and Wettstein, J.J. AGU Fall Meeting: San Francisco, USA (oral presentation)
Dec. 14, 2009 Patterns of Jet Stream Wintertime Variability and their Relation to the Storm Tracks
Athanasiadis, P.J., Wallace, J.M. and Wettstein, J.J. AGU Fall Meeting: San Francisco, USA (poster presentation)
Oct. 19, 2009 Subtropical vs. Eddy-driven Jet Fluctuations: Interpreting Familiar Patterns of Atmospheric Variability
Wettstein, J.J. and Li, C. Bjerknes Centre / Geophysics Institute Colloquium: Bergen, Norway (oral presentation)
Aug 28, 2009 Atmospheric Wave-Mean Flow Interactions and the 3-dimensional Structure of Jet Variability
Wettstein, J.J. Seminar, Geophysical Fluid Dynamics Laboratory: Princeton, USA (oral presentation)
June 27, 2009 Are We Missing a Positive (Dynamic?) Feedback in our Climate Models?
Wettstein, J.J. and Kvamstø, N.G. Observing the Arctic: Windows to Climate Change: Longyearbyen, Norway (poster)
Feb. 9, 2009 “Theory” Versus a Model: Exploring Atmospheric Circulation Changes from Warm to Cold Climates
Wettstein, J.J. and Li, C. Bjerknes Centre / Geophysics Institute Colloquium: Bergen, Norway (oral presentation)
Jan. 9, 2009 Storm Track Variability and its Interaction with the Background Flow on Daily to Climate Time Scales
Wettstein, J.J. Reducing the Uncertainty in the Prediction of Global Warming: Jerusalem, Israel (poster presentation)
Dec. 18, 2008 Storm Tracks and Large-Scale Flow Variability from Warm to Cold Climates
Li, C. and Wettstein, J.J. AGU Fall Meeting: San Francisco, USA (poster presentation)
Dec. 18, 2008 Modes of Storm Track Variability and Their Interaction with the Dominant Modes of Flow Variability
Wettstein, J.J. and Wallace, J.M. AGU Fall Meeting: San Francisco, USA (poster presentation)
Nov. 18, 2008 Observed Modes of Storm Track Variability and their Relationship to (Moderation of?) Teleconnections
Wettstein, J.J. Teleconnections Workshop, International Center for Theoretical Physics: Trieste, Italy (oral presentation)
Sept. 25, 2008 Storm Track Variability and its Relationship to (Forcing of?) the Dominant Climate Variability Patterns
Wettstein, J.J. Dynamics Seminar, Univ. of Washington Atmospheric Sciences: Seattle, USA (oral presentation)
Sept. 4, 2008 Fundamental Modes of Storm Track Variability and their Interaction with the Background Flow
Wettstein, J.J. National Center for Climate Research Summer School: Monte Verita, Switzerland (poster presentation)
Feb. 26, 2008 Storms and the NAM (NAO), PNA and SAM: A dance between coherent climate modes or alphabet soup?
Wettstein, J.J. Bjerknes Centre / Geophysics Institute Colloquium: Bergen, Norway (oral presentation)
Dec. 14, 2005 Climate Variability and Atmospheric Circulation in the LGM: Model Results & Ice Core Interpretations
Wettstein, J.J. et. al. AGU Fall Meeting: San Francisco, USA (poster presentation)
Dec. 15, 2004 A Detailed and Comprehensive Reconstruction of the Northern Annular Mode Using Tree Rings
Wettstein, J.J. and J.M. Wallace AGU Fall Meeting: San Francisco, USA (poster presentation)

TEACHING EXPERIENCE / INVITED LECTURES
Justin J. Wettstein, page 5 of 5
Current Co-supervisor: Active co-supervision of three graduate students; Geophysical Institute, University of Bergen
Francesco S.R. Pausata (Ph.D.), Kristen Ravnestad (M.S.) and Solbjørg Apeland (M.S.)
June, 2010 Invited lecturer: Summer school--Monsoon Variability, Teleconnections and Glacier Impacts (Austria)
Modes of Climate Variability I / II (Tropical / Extratropical); Lectures for Climate Dynamics Summer School
Jan. 11, 2010 Invited lecturer: Simon Fraser University (Vancouver, Canada), Department of Geography
Scales of Motion in the Atmospheric Circulation; Lecture for a course on weather and climate
Dec. 2009 Invited lecturer: Universitat de Barcelona (Spain), Departament d’ Astronomia i Meteorologia
Atmospheric Dynamics and Waves in the General Circulation I / II; Lectures in atmospheric dynamics course
Nov. 2009 Invited lecturer: University of Bergen (Norway), Geophysical Institute
Atmospheric Influences on the Surface Ocean I / II; Lectures in physical and biological oceanography course
Fall 2005 Teaching Assistant (Gerard Roe / Stephen Riser): Program on Climate Change 587--Climate Dynamics
• Lectured on statistical methods and atmospheric dynamics, codeveloped curriculum and evaluated students
Fall 2002 Teaching Assistant (David Battisti / Nathan Mantua): Honors 220A--Pacific Northwest Climate Variability
• Lectured on climate dynamics and statistical methods, codeveloped curriculum and evaluated students
SERVICE
• Reviewer: Journal of Climate, Geophysical Research Letters, Monthly Weather Review,
National Oceanic and Atmospheric Administration
• Initiated a new Bjerknes Centre Colloquium and served one year as co-organizer
• Participated as an outreach volunteer, University of Washington Atmospheric Sciences (2 years)
• Performed Lead Teaching Assistant duties (organized lab and evaluation materials and critiqued lectures),
University of Washington, Department of Atmospheric Sciences
• Volunteered with and led a team (4 years) with Seattle Inner City Outings (outdoor experiences for urban youth) and
volunteered (2 years) with Rebuilding Together Seattle (repair of dilapidated homes for disabled / disadvantaged owners)
• Assisted in a nitrogen isotope study in air, snow and ice cores (Summit, Greenland)
CLIMATE POLICY EXPERIENCE
2001-2003 Intern / Planner II: King County Government (Seattle, WA)
Supervisor: Dr. Don Theiler
• Co-developed a greenhouse gas and air quality program for King County
• Completed an inventory for King County that has led to internal targets, energy investments and savings
1998-1999 Program Specialist: U.S. Global Change Research Program (Washington, D.C.)
Supervisor: Dr. Michael MacCracken
• Coordinated climate impact studies on coastal areas, forests, water resources, agriculture and human health
• Provided technical expertise on climate and socioeconomic scenarios