### 2017

β**Ergodicity and Accuracy for Optimal Particle Filters.**

UChicago, Chicago, πΊπΈ , January. Slides.

β

**Ergodicity and Accuracy for Optimal Particle Filters.**

UoT, Toronto, π¨π¦ , January. Slides.

### 2016

β**Ergodicity and Accuracy for Optimal Particle Filters.**

McGill, Montreal, π¨π¦ , December. Slides.

β

**Ergodicity and Accuracy for Optimal Particle Filters.**

Math Colloquium, CMU, πΊπΈ , December. Slides.

β

**Ergodicity and Accuracy for Optimal Particle Filters.**

Mathsfest 2016, Canberra, π¦πΊ , November. Slides.

β

**Ergodicity in data assimilation methods.**

Probability seminar, U Delaware, πΊπΈ , July. Slides.

β

**Predicting chaotic systems with sparse data: lessons from numerical weather prediction.**

DataEngConf 2016, New Lab Brooklyn, πΊπΈ , November. Keynote (~120mb) , pdf (~1mb, but no movies).

β

**Fluctuations in the heterogeneous multiscale method.**

SIAM: Mathematics of Planet Earth, Philadelphia, πΊπΈ , October. Slides.

β

**Mini-course on data assimilation.**

EVEQ2016, Prague, π¨πΏ , July. Lectures 1, 2, 3.

β

**Fluctuations in the heterogeneous multiscale method.**

AIMS 2016, Orlando, πΊπΈ , July. Slides.

β

**Ergodicity in data assimilation methods.**

AIMS 2016, Orlando, πΊπΈ , July. Slides.

β

**Fast-slow systems with chaotic noise.**

ESI Vienna, π¦πΉ , May. Slides.

β

**Minicourse: Fast-slow systems and rough path theory.**

ESI Vienna, π¦πΉ , May. Notes to appear soon!.

β

**Ergodicity in Data assimilation.**

ETH Zurich, π¨π , April. Slides.

β

**Ergodicity in Data assimilation.**

Statistics and applied math seminar, U Chicago, πΊπΈ , April. Slides.

β

**Ergodicity in Data assimilation.**

Applied math seminar, Berkeley-LBNL, πΊπΈ , March. Slides.

β

**Fast-slow systems with chaotic noise.**

Probability seminar, CUNY, πΊπΈ , March. Slides.

β

**Data assimilation in high dimensions.**

Graduate student seminar, CIMS, NYU, πΊπΈ , February. Slides.

β

**Data assimilation in high dimensions.**

DPMMS, Cambridge, π¬π§ , January. Slides.

### 2015

β**Data assimilation for high dimensional nonlinear forecast problems.**

New challenges in PDE workshop, MSRI, Berkeley, Oct. Slides.

β

**Fast-slow systems with chaotic noise.**

Applied analysis and computation seminar, UMass, Amherst, September. Slides.

β

**A mini-course on rough path theory (6 lectures).**

SIMPA workshop. USP - Sao Carlos, Brazil, August.

β

**Stability of the ensemble Kalman filter.**

Equadiff 2015, Lyon, France, July. Slides.

β

**Fast-slow systems with chaotic noise.**

Homogenization workshop, Luminy, France, May. Slides.

β

**Fast-slow systems with chaotic noise.**

Math finance, PDE, stochastics seminar, Rutgers, April. Slides.

β

**Fast-slow systems with chaotic noise.**

Colloquium, Penn state, March. Slides.

β

**Fast-slow systems with chaotic noise.**

BU/Brown seminar, Brown, March. Slides.

β

**What do we know about EnKF?**

CAOS colloquium, Courant, March. Slides.

β

**Fast-slow systems with chaotic noise.**

Probability seminar, Columbia, February. Slides.

### 2014

β**EnKF and filter divergence.**

Math seminar, NIST, December. Slides.

β

**Fast-slow systems with chaotic noise.**

Math colloquium, U of Minn, November. Slides.

β

**Fast-slow systems with chaotic noise.**

Applied math seminar, CIMS, NYU, October. Slides.

β

**Fast-slow systems with chaotic noise.**

Applied math and PDE seminar, Drexel, October. Slides.

β

**Fast-slow systems with chaotic noise.**

Courant instructor day, CIMS, NYU, October. Slides.

β

**Stochastic PDEs summer graduate school (TA sessions).**

MSRI, Berkeley, July. Video.

β

**EnKF and catastrophic filter divergence.**

SIAM UQ 2014, Hyatt Regency, Savannah, May. Slides.

β

**EnKF and catastrophic filter divergence.**

Model-Data workshop, Newton Institute, Cambridge, March. Slides.

β

**Fast-slow systems with chaotic noise.**

Probability seminar, UniversitΓ© Paris Dauphine, Paris, March. Slides.

β

**Fast-slow systems with chaotic noise.**

Probability seminar, Warwick University, March. Slides.

β

**Fast-slow systems with chaotic noise.**

Rough paths 2014, IPAM, UCLA, January. Slides.

β

**EnKF and catastrophic filter divergence.**

MURI workshop, Courant Institute, NYU, January. Slides.

### 2013

β**Stochastic climate modelling (2 Lectures).**

Mathematics of climate (graduate lecture course) , UNC Chapel Hill, December. lecture 1, lecture 2.

β

**EnKF and catastrophic filter divergence.**

Predictability in Earth Systems Processes, Universita of Minnesota, November. Slides.

β

**EnKF and catastrophic filter divergence.**

Data assimilation day, UNC Chapel Hill, November. Slides.

β

**Homogenization for multidimensional fast-slow systems.**

Duke-UNC probability seminar, UNC Chapel Hill, October. Slides.

β

**Homogenization for multidimensional fast-slow systems.**

XVIIth Brazilian school of Probability, Rio de Janeiro, September. Slides.

β

**Tutorial's for regularity structures.**

XVIIth Brazilian school of Probability, Rio de Janeiro, September.

β

**An algebraic framework for Ito's formula.**

Algebra and combinatorics seminar, ICMAT Madrid, April. Slides.

β

**EnKF and catastrophic filter divergence**

Data assimilation workshop, University of Maryland, June. Slides.

β

**An algebraic framework for Ito's formula.**

Algebra and combinatorics seminar, ICMAT Madrid, April. Slides.

β

**Ito’s formula via rough paths.**

Oxford stochastic analysis seminar, Oxford, April. Slides.

β

**Short course on Data Assimilation.**

TIFR, Bangalore India, March.

β

**Homogenisation for multidimensional maps.**

Dynamical systems seminar, University of Sydney, January.

### 2012

β**Geometric vs non-geometric rough paths (v2).**

SSSC 2012, ICMAT Madrid, November. Slides.

β

**Geometric vs non-geometric rough paths (v1).**

Data Assimilation 2012, University of Oxford, September. Slides.

β

**Simplifying non-geometric rough paths.**

East midlands stochastic analysis seminar, University of York, July. Slides.

### 2011

β**Finding limits for multiscale SPDEs.**

Multiscale systems, University of Warwick, December. Slides.

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