Dr. George Matheou
|Address:||United Technologies Building, Room 384.|
Department of Mechanical Engineering, Storrs, CT 06269
This is the group of Dr. Georgios “George” Matheou in the Department of Mechanical Engineering. Our mission is to provide world-class education, engage and inform the general public, and solve significant problems using computational science to make a positive impact on society and the environment.
Open Postdoc Position!
We invite applications for a Postdoctoral Research Associate position in Large-Eddy Simulation. The postdoctoral research associate will support the activities of multidisciplinary team in the development and validation of a unified convection scheme in the Community Earth System Model (CESM). More details here.
We were thrilled to join friends and colleagues in Boulder, CO for the CESM workshop. Many thanks to NCAR CGD and everyone else who organized the workshop. In the picture is Oumaima and Obaidullah with their poster.
…and a few more papers published since our last update:
Lamaakel, O., R. Venters, J. Teixeira, and G. Matheou, 2023: Computational domain size effects on large-eddy simulations of precipitating shallow cumulus convection, Atmosphere 14 (7), 1186
Chinita, M. J., M. Witte, M. J. Kurowski, J. Teixeira, K. Suselj, G. Matheou, P. Bogenschutz, 2023: Improving the representation of shallow cumulus convection with the Simplified Higher-Order Closure Mass-Flux (SHOC+ MF v1. 0) approach, Geoscientific Model Development, 16 (7), 1909–1924.
Matheou, G., 2022: Large-eddy simulation of cumulus clouds, Physical Review Fluids, 7, 110507.
June 21: A Wave of New Papers
Four new papers were published or accepted recently. The papers are published in the Journal of Atmospheric Sciences, Monthly Weather Review, and the Quarterly Journal of the Royal Meteorological Society.
Lamaakel, O. and G. Matheou, 2022: Organization development in precipitating shallow cumulus convection: Evolution turbulence characteristics, Journal of the Atmospheric Sciences, 79, 2419–2433.
Witte, M. K., A. Herrington, J. Teixeira, M. J. Kurowski, M. J. Chinita, R. L. Storer, K. Suselj, G. Matheou, and J. Bacmeister, 2022: Augmenting the double-Gaussian representation of atmospheric turbulence and convection via a coupled stochastic multi-plume mass flux scheme, Monthly Weather Review, 150, 2339–2355
Chinita, M. J., G. Matheou, and P. Miranda, 2022: Large-eddy simulation of very stable boundary layers. Part I: Modeling methodology, Quarterly Journal of the Royal Meteorological Society, 148, 1805–1823.
Chinita, M. J., G. Matheou, and P. Miranda, 2022: Large-eddy simulation of very stable boundary layers. Part II: Anisotropic turbulence structure, Quarterly Journal of the Royal Meteorological Society, 148, 1824–1839.
December 10: APS/DFD Gallery of Fluid Motion Award
Our video entry in the Gallery of Fluid Motion of the 2021 APS DFD has won the Gallery of Fluid Motion Award.
The video is available here:
The video shows a simulation of a cumulus-topped trade wind atmospheric boundary layer observed during the Barbados Oceanographic and Meteorological Experiment (BOMEX). The video demonstrates the fidelity of modern computational methods for the simulation of clouds and atmospheric turbulence. These simulations help address important questions in environmental fluid dynamics and atmospheric science, and help improve weather forecasts and climate projections.
December 8: New Paper!
Methane is a nasty greenhouse gas! An Artificial Intelligence-based method is developed to quantify methane leaks. The method combines large-eddy simulations, a convolutional neural network model, and airborne observations to find methane leaks. Many thanks to our collaborators at Caltech and JPL and Siraput for all his hard work!
Jongaramrungruang, S., A. K. Thorpe, G. Matheou and C. Frankenberg, 2022: MethaNet – An AI-driven approach to quantifying methane point-source emission from high-resolution 2-D plume imagery, Remote Sensing of Environment, 269, 112809
December 1: 74th Annual Meeting of the American Physical Society, Division of Fluid Dynamics
Ravon and Oumaima presented their research at the 2021 APS DFD meeting.
October 29: Upcoming Conferences
We are presenting papers in the upcoming APS DFD and AGU Fall meetings.
74th Annual Meeting of the APS Division of Fluid Dynamics:
Lamaakel., O. and G. Matheou, Large-scale organization development in precipitating shallow cumulus convection, APS DFD 2021, M02.00007
Venters, R. and G. Matheou, Wall-pressure fluctuations in a turbulent boundary layer: a comparison of two LES models, APS DFD 2021, M08.00003
AGU Fall Meeting 2021:
Herrington, A., M. Witte, J. Teixeira, J. Bacmeister, M. Kurowski, M. Chinita, R. Storer, K. Suselj and G. Matheou, Improving on the representation of subtropical clouds in the Community Atmosphere Model using CLUBB+MF, AGU Fall Meeting, OS45E-1188
Matheou, G. and O. Lamaakel, Growth rates of turbulence length scales in precipitating shallow cumulus convection, A24F-06.
Chinita, M., M. Witte, M. Kurowski, J. Teixeira, K. Suselj and G. Matheou, Improving shallow convection in the simple cloud-resolving E3SM atmosphere model with the stochastic multi-plume mass-flux parameterization, A43D-04
Witte, M., A. Herrington, J. Teixeira, M. Kurowski, M. Chinita, R. Storer, K. Suselj, G. Matheou and J. Bacmeister, Augmenting the double-Gaussian representation of atmospheric turbulence and convection via a coupled stochastic multi-plume mass flux scheme, A25N-1864
October 7: Research Connections
Come meet us and learn about research at Research Connections on Friday, October 15, 2–4 pm at the Werth Residence Tower. Research Connections is a networking event intended to expose first and second year students to undergraduate research through engaging in meaningful interactions with faculty, staff, graduate students, and peers. Research Connections is organized by the Office of First Year Programs & Learning Communities (FYP&LC), the Office of Undergraduate Research for organizing the even!
September 30: Art & Teaching
We participated in “Teaching Is A Work Of HeArt” at the William Benton Museum of Art at TA/GA meet and greet across disciplines. Cosponsored by UConn’s Center for Excellence in Teaching and Learning and the William Benton Museum of Art.
July 13: GABLS4 LES Model Intercomparison Paper
The paper documenting the GABLS4 LES Model Intercomparison study has been published Boundary Layer Meteorology! Our LES model is one of ten models that contributed simulations to model a very stable Antarctic boundary layer. “GABLS4” is an interesting acronym: it is the Fourth GEWEX Atmospheric Boundary Layer Study, and GEWEX is the Global Energy and Water Exchanges project, which is as part of the World Climate Research Programme (WCRP). So, we contributed our LES to GABLS4, which is part of GEWEX under WCRP.
December 16: AGU Fall Meeting 2019
We participated in the AGU Fall Meeting with several presentations:
Monday, December 9
Residual Cross-Grid Flow Numerical Error in Large-Eddy Simulations of Cumulus-Topped Boundary Layers (A13N-3131)
Oumaima Lamaakel and Georgios Matheou
Infrared Instrument Radiance Modeling from Large Eddy Simulations to Access Sensitivity to Marine Planetary Boundary Layer Processes (A11T-2827)
Evan Fishbein, Bjorn Lambrigtsen, Matthew D. Lebsock, Georgios Matheou, Vivienne Payne, Mathias M. Schreier, Joao Teixeira, and Robert C Wilson
Inherent Properties of Clouds in the PBL Derived from Multi-angle Spectro-Polarimetric Imaging at the “Edge of Space:” New Capabilities of JPL’s AirMSPI Sensor on NASA’s Airborne ER-2 Platform (A11T-2828 )
Anthony B. Davis, Feng Xu, Gerard van Harten, David J. Diner, Aviad Levis, Yoav Y. Schechner, and Georgios Matheou
Wednesday, December 11
Boundary Layer Clouds and Climate: From LES to Simple Models (A32E-01)
Joao Teixeira, Georgios Matheou, Daniel Chung, and Peter Kalmus
Thursday, December 12
The spiderweb structure of stratocumulus clouds (A41Q-2873)
Georgios Matheou, Anthony B. Davis, and Joao Teixeira
December 6: An Art and Science Collaboration
Jonathan Goodrich and Liam McNeece two creative and talented students in Digital Media and Design created an informative and engaging animation to describe the dynamics of stratocumulus clouds. The animation was created in the Scientific Visualization class taught by Prof. Anna Lindemann. The animation seamlessly integrates Jonathan’s and Liam’s illustrations/animations with a movie from a high-resolution simulation of a stratocumulus cloud with our group’s large-eddy simulation model.
November 18: Weather and Art!
We visited Ms Govoni’s 7th Grade Art Class at Parish Hill High School and discussed clouds and weather. Inspired by our conversation, images and movies, students created marble art. Marble art has a striking resemblance to the Earths’s atmospheric motions: behaves like a two dimensional fluid with very little horizontal mixing. (more pictures coming soon!)
Our group participated in Research Connections 2019, a networking event at UConn intended to expose first and second year students to undergraduate research through engaging in meaningful interactions with faculty, staff, graduate students, and peers. Below, Oumaima Lamaakel, a graduate student in our group, is discussing her high resolution simulations of clouds and atmospheric dispersion. Many thanks to the Office of First Year Programs & Learning Communities (FYP&LC), the Office of Undergraduate Research for organizing the even!
Art and Science!
As part of the Fluid Dynamics I course, the Fluid Dynamics in Art and Nature exhibition (August 23 – October 13, 2019) at the Benton Museum of Art explores the intersection of art and science by bringing together works of art from the Benton Museum’s collection with computer simulations of natural phenomena. The exhibition aims to promote creativity, critical thinking, and self-learning. Fluid Dynamics in Art and Nature is curated by Dr. Matheou, and Dr. Amanda Douberley, Assistant Curator/Academic Liaison, Willian Benton Museum of Art.
Benton Museum Workshop: Thursday, October 10 at noon