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The transport of trace gases through the stratosphere impacts surface climate. Small changes in stratospheric water vapor, on the order of one part per million, can impact surface temperature by as much as a tenth of a degree. A sudden drop in stratospheric water vapor of this magnitude – a response to internal variability of the atmosphere – was observed in 2000. Chemistry climate model simulations of stratospheric ozone also depend critically on the transport of ozone and ozone depleting substances, and biases in transport are a leading source of uncertainty in the recovery of stratospheric ozone. Volcanic aerosols (and the possibility of injecting sulfur into the stratosphere for climate intervention) provides another example of the importance of stratospheric tracer transport for the climate at the surface.

Downward migration of the zonal-mean circulation in the tropical atmosphere

Published: December 11, 2019

The annular modes of the extratropical atmosphere have received much attention for quantifying and predicting variability of the jet streams and storm tracks, despite the limited zonal coherence of midlatitude variability. In the tropics, annular Huctuations of the circulation have not been investigated, despite the comparative dominance of zonal-mean variations in this region, associated with weak temperature gradients at low latitudes.

Downward Migration in the Zonal Mean Circulation of the Tropical Atmosphere

Published: January 31, 2020

This is my first ever virtual colloquium visit. From the comforts of my own office, I’ll present my talk over the internet, coupled with a day of virtual meetings with students, postdocs, and faculty. The goal is to reduce our CO2 footprint – something our field should mindful of more than any other – but it will also help reduce the “family footprint”, i.e. the impact on spouses left to deal with kids who tend to get sick this time of year. Ugh. Only catch is that the seminar is 3:30 pm on a Friday, Pacific time!

Downward Migration in the Zonal Mean Circulation of the Tropical Atmosphere

Published: April 06, 2020

Postponed due to COVID-19.

Downward Migration in the Zonal Mean Circulation of the Tropical Atmosphere

Published: October 08, 2020

A virtual visit to Korea, giving me the chance to speak into the future. My talk will be Thursday 8 October at 9 am for the audience, 8 pm on Wednesday for me!

Downward Migration of the Zonal Mean Circulation in the Tropical Atmosphere

Published: December 10, 2020

A virtual visit to Israel…

Abrupt changes in the extratropical circulation of the atmosphere: Dynamic vs. Thermodynamic Regimes

Published: December 14, 2020

A virtual presentation this year. A pre-recorded talk plus 4 minutes of discussion at 11:30 pm, EST. O brave new world, with such meetings in it!

Downward Migration of the Zonal Mean Circulation in the Tropical Atmosphere

Published: February 09, 2021

A virtual visit to London…

Atmospheric model hierarchies: A bridge from theory to climate prediction

Published: March 05, 2021

This virtual conference was organized by the newly minted Institute for Mathematical and Statistical Innovation.

Trace gas transport in the stratosphere: Opportunities and challenges

Published: September 24, 2021

I finally made it to Harvard, in spirit if not in person. A virtual visit, but quite productive!

Everything You Always Wanted to Know About Climate Modeling*

Published: October 28, 2021

An outreach seminar directed at NYU undergraduates interested in applied mathematics and climate science.

Generalization and Calibration: A 1-D QBO model testbed for data-driven gravity wave parameterization

Published: July 15, 2022

I attended this meeting virtually, actually tuning in from three different locations. In a classic, left hand doesn’t know what the right is doing, I managed to schedule our moving date to Berlin to coincide with my talk! It only worked out in the end because our sessions were in the late afternoon in Pittsburgh, so I could join our sessions at 10 pm. It started on the last day of our vacation in Tuscany, then I was in Bayreuth for the second day, as we paused on our drive across Europe, reaching Berlin for the final day of the symposium when I gave my talk!

A model hierarchy for data-driven gravity wave parameterization

Published: September 19, 2022

My first in person meeting since AGU 2019! The Mathematisches Forschungsinstitut Oberwolfach is a wonderful mathematics retreat center, library, and research institute tucked away in the Schwarzwald (Black Forest).

A 1-D QBO model testbed for data-driven gravity wave parameterization: Generalization and calibration

Published: November 14, 2022

Here’s the poster.

Data driven parameterization of unresolved gravity wave momentum transport: A 1-D Quasi Biennial Oscillation model testbed

Published: November 15, 2022

My first in-person seminar since April 2019!

Data driven parameterization of unresolved gravity wave momentum transport: A 1-D Quasi Biennial Oscillation model testbed

Published: November 21, 2022

The first stop on my 2022-3 tour of Germany.

Data driven parameterization of unresolved gravity wave momentum transport: A 1-D Quasi Biennial Oscillation model testbed

Published: December 08, 2022

A seminar and visit to meet with collaborators in Frankfurt.

Data driven parameterization of unresolved gravity wave momentum transport: A 1-D Quasi Biennial Oscillation model testbed

Published: December 14, 2022

A talk down south while I’m meeting with colleagues at LMU and DLR.

Data driven parameterization of unresolved gravity wave momentum transport: A 1-D Quasi Biennial Oscillation model testbed

Published: February 07, 2023

A talk and opportunity to meet with more collaborators on our DataWave project.

Data driven parameterization of unresolved gravity wave momentum transport: A 1-D Quasi Biennial Oscillation model testbed

Published: February 08, 2023

Another talk while in town, and opportunity to meet with collaborators on the Isca Modeling Hierarchy, and see my PhD advisor.

Revealing the statistics of extreme sudden stratospheric warming events hidden in short weather forecast data

Published: April 25, 2023

A ‘solicited’ talk at the 2023 EGU Meeting at a session on the middle atmosphere. Hmm, sounds a bit sketchy in American English, where solicited usually comes up in a legal context! I’m taking it as an opportunity to show Justin Finkel’s methods to extract climatological statistics from S2S data. This is joint work with Dorian S. Abbot and Jonathon Weare.

The Dynamics and Structure of the Baroclinic Annular Mode

Published: April 28, 2023

A contributed talk at the 2023 EGU Meeting at a session on dynamics and predictability on subseasonal-to-seasonal (S2S) time scales. I’m presenting work led by my former postdoc, Madeleine Youngs, in collaboration with my colleague Olivier Pauluis.

Revealing the statistics of extreme events hidden in short weather forecast data: A case study of Sudden Stratospheric Warmings

Published: May 09, 2023

A short tour of Schweiz, beginning at the Eidgenössische Technische Hochschule Zürich!

Revealing the statistics of extreme events hidden in short weather forecast data: A case study of Sudden Stratospheric Warmings

Published: May 10, 2023

The colloquium in Climatology, Climate Impact and Remote Sensing at the Universität Bern is another opportunity to show Justin Finkel’s methods to extract climatological statistics from S2S data. This is joint work with Dorian S. Abbot and Jonathon Weare.

Data driven parameterization of unresolved gravity wave momentum transport: A 1-D Quasi Biennial Oscillation model testbed

Published: May 11, 2023

The third and final stop on my tour of Suisse, catching a bit of the French speaking part!

Revealing the statistics of extreme events hidden in short weather forecast data: A case study of Sudden Stratospheric Warmings

Published: June 08, 2023

I’ll be presenting Justin Finkel’s methods to extract climatological statistics from S2S data at the KlimaCampus Colloquium, a joint seminar series between the Max Planck Institute for Meteorology and the University of Hamburg. This is joint work with Dorian S. Abbot and Jonathon Weare.

Revealing the statistics of extreme events hidden in short weather forecast data: A case study of Sudden Stratospheric Warmings

Published: June 20, 2023

I’ll be presenting Justin Finkel’s methods to extract climatological statistics from S2S data at the physics department colloquium, rounding out my series of visits to LMU and DLR over my sabbatical. This is joint work with Dorian S. Abbot and Jonathon Weare.

Revealing the statistics of extreme sudden stratospheric warming events hidden in short weather forecast data

Published: July 12, 2023

To round out my sabbatical, an invited talk at the 2023 International Union of Geodosy and Geophysics General Assembly. Fitting that the meeting is in Berlin! As in Vienna, I’m taking it as an opportunity to show Justin Finkel’s methods to extract climatological statistics from S2S data to an audience of atmospheric scientists. This is joint work with Dorian S. Abbot and Jonathon Weare.

Ed Gerber

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