Douglas Keller Jr.
Postdoctorate Researcher
Education
Doctorate of Philosophy
Ingéniere, Mécanique et Énergétique
Fall 2019 - Fall 2022
Master of Science
Mechanical Engineering
Fall 2017 - Fall 2018
Bachelor of Science
Mechanical Engineering
Fall 2014 - Fall 2018
Research Experience
XSeaO2
Energy4Climate, Palaiseau, Île-de-France, FR
Summer 2021 - Present
Researching and engineering CO
2 extraction from the ocean to produce carbon based fuel.
- Supervised a Master's intern to determine the most optimal places for the Seafuel device in the Mediterranean Sea.
- Developed a simple model to simulate the Seafuel and the oceanic carbon system.
- Presented work at the Ocean Science Meeting 2022.
Impact of the Mistral on Dense Water Formation (Doctorate of Philosophy Thesis)
Institut Polytechnique de Paris, École Polytechnique, Laboratoire de Météorologie Dynamique, Institut Pierre-Simon Laplace, Centre National de la Recherche Scientifique, Palaiseau, Île-de-France, FR
Fall 2019 - Fall 2022
Determining the spatial and temporal effects of the Mistral on the Dense Water Formation in the Gulf of Lion (Northwestern Mediterranean Sea)
- Created a database of Mistral events with duration and intensity from atmospheric regional models driven by global weather reanalysis.
- Ran multiple ocean simulations (NEMO) with different wind forcings to determine the ocean sensitivity to wind forcing.
General Fluid Planetary Modelling
Laboratoire de Météorologie Dynamique, Palaiseau, Île-de-France, FR
Summer 2021 - Present
Injecting fluid agnostic capability into DYNAMICO, the atmospheric dynamics model at LMD.
- Supervising a Master's intern to develop a Julia model capable of running thermodynamically agnostic dynamics for fluids.
Red Sea Preconditioning
Laboratoire de Météorologie Dynamique and Weizmann Institute of Science, Palaiseau, Île-de-France, FR and Rehovot, IL
Spring 2022 - Present
Investigating the deep convection behavior in the northern part of the Red Sea.
ALPACA-PBL
University of Alaska Fairbanks, Fairbanks, Alaska, USA
Summer 2022 - Present
Investigating the build up and break up of radiatively forced boundary layers in the subarctic.
Oceanic Response to Medicane Forcing
Laboratoire de Météorologie Dynamique and Hellenic Centre for Marine Research, Palaiseau, Île-de-France, FR and Athens, GR
Fall 2021 - Present
Studying the effects of Medicane tracks on the Mediterranean Sea vertical stability.
New Wavelet Detection of Multilayering in the High Latitude Atmospheric Boundary Layer
University of Alaska, Fairbanks, Fairbanks, Alaska, USA
Fall 2017 - Present
Observing the multilayered aspect of the high latitude atmospheric boundary layer in Fairbanks, Alaska with lidar backscattering profiles and wavelet transforms.
Shift in Spectral Content of the Turbulent Kinetic Energy of the Surface Layer in Fairbanks, Alaska with Northward Traveling Cyclonic Conditions
University of Alaska, Fairbanks, Fairbanks, Alaska, USA
Fall 2017 - Present
Determining the shift in spectral content of the atmospheric surface layer in Fairbanks, Alaska during a transitioning synoptic condition, with northward advection of moisture.
Seasonal Variability of Superior Mirages
University of Alaska Fairbanks, Fairbanks, Alaska, USA
Summer 2019 - Present
Determined the seasonal variability of superior mirages in the subarctic and arctic latitudes with GPS radio occultation (GPSRO)
- Developed an algorithm to detect the presence of a potential mirage in GPSRO refractivity profiles
- Spatially and temporally determined the variability of potential mirage events in the high latitudes
- Presented work at the Light and Color in Nature conference in Maine, USA
Fiber Optic Strain Sensing for Electric Motors (Master of Science Thesis)
College of Engineering and Mines, University of Alaska Fairbanks, Fairbanks, Alaska, USA
Fall 2017 - Fall 2018
Determined the effect of electromagnetic interference from electric motors on load sensing strain gauges.
- Placed NASA's Fiber Optic Sensing System (FOSS) and conventional strain gauge systems in high electromagnetic interference environments found in aviation
- Developed a load cell designed around the FOSS to measure thrust from an electric motor coupled with a 3-blade propeller to develop future electric propulsion systems
- Analyzed and compared data retrieved using the FOSS and conventional strain gauges
- Determined the effect of electromagnetic interference on the thrust loading measurements
- Determined the effect of mechanical interference/vibration with both systems in the same test application
Alaska Space Grant Undergraduate Research Fellowship
Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska, USA
Fall 2017 - Summer 2018
Studied the atmospheric boundary layer (ABL) with NASA's network of micro-pulse lidars (MPLNET)
- Used the MPLNET and radiosonde data to determine the intraday variability of the high latitude atmospheric boundary layer
- Developed algorithms to determine atmospheric boundary layer structural parameters from the MPLNET profiles
- Compared and contrasted collocated lidar and radiosonde retrievals of ABL parameters
- Produced statistical estimates of ABL parameters and computed diurnal and seasonal variations
- Analyzed the high latitude ABL with the MPLNET, radiosonde data, and global positioning system radio occultation (GPSRO)
Raman Spectroscopy Lidar
Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska, USA
Fall 2016
Assisted with the setup of a Raman spectroscopy lidar and developed mechanical fixtures for application.
- Gained experience in optomechanical design for Lidar development
- Developed simulation of Lidar signals to condition instrument design for 532 nm, N2, and H2O Raman vibrational bands
- Implemented multichannel Lidar receiver
Vocational Experience
Postdoctorate Researcher
Energy4Climate, Laboratoire de Chimie Moléculaire, Laboratoire de Météorologie Dynamique, École Polytechnique, Palaiseau, Île-de-France, FR
Developing and manufacturing a prototype demonstrator that extracts CO
2 from the ocean and produces synthetic fuel with it.
Moniteur (Teaching Assistant)
Département de Mécanique, École Polytechnique, Palaiseau, Île-de-France, FR
Fall 2020 - Present
Teaching and leading students through master and bachelor level coursework.
- Taught petite class for Master students in MEC559, Introduction to Wind Energy. Topics included: Wind turbine design, Airfoils, Atmospheric dynamics and resources, Bending beam vibrations
- Monitored Bachelor students enrolled in the Phys103, Physics Lab.
Doctorate Researcher
Laboratoire de Météorologie Dynamique, École Polytechnique, Palaiseau, Île-de-France, FR
Determining the spatial and temporal effects of the Mistral on the Dense Water Formation in the Gulf of Lion (Northwestern Mediterranean Sea)
Research Technician
Alaska Center for Energy and Power, University of Alaska Fairbanks, Fairbanks, Alaska, USA
Summer 2019 - Fall 2019
Performing data analytics and large data organization for Alaska Center for Energy and Power's (ACEP) fuel meter project.
- Developed large data analysis methods for the ACEP fuel meter project
- Created data visualization methods for different temporal representations
Spring 2019 - Summer 2019
Rewriting the Alaska Center for Energy and Power's (ACEP) Energy Technology Facility's (ETF) safety manual.
- Determining the job hazards and required training to safely perform experiments in the ETF
- Adjusting the emergency action plan of ETF to more effectively transfer ETF's emergency systems
Teaching Assistant
College of Engineering and Mines, University of Alaska Fairbanks, Fairbanks, Alaska, USA
Spring 2017 - Fall 2018
Graded homework and exams, and assisted students with studies in engineering.
- Graded homework and exams for the courses on Mechanics of Materials, Instrumentation and Measurement, and Heat Transfer
- Recorded lectures for Astrodynamics and Mechanical Vibration
Mechanical Engineering Intern
NASA Armstrong Flight Research Center, Edwards, California, USA
Summer 2017
Tested thermodynamics and heat transfer of the initial Fiber Optic Sensing System (FOSS) enclosure concept for the Quiet Supersonic Technology (QueSST) X-Plane (now the X-59).
- Researched heat transfer technologies for FOSS enclosure flight testing application such as heat pipes and thermoelectric coolers
- Analyzed heat transfer methods for FOSS enclosure application including foam insulation
- Designed prototype enclosure for FOSS components, utilizing analyzed methods features foam insulation and heat pipes for improved high temperature environment survivability
Engineering Intern
Alaska Department of Transportation, Fairbanks, Alaska, USA
Summer 2015
Determined the compliance of pedestrian facilities in the Fairbanks Borough with the American Disability Act (ADA).
- Measured state maintained pedestrian facilities such as sidewalks and ramps
- Determined pedestrian facility requirements for ADA compliance including required slope accommodation for disabled pedestrians
- Compiled measurement data from multiple interns for coordinator review
Engineering Intern
Project Aisle, Spokane, Washington, USA
Summer 2016
Golf Swing Replicator Prototype: designed and built a golf swing replicating rig.
- Designed the golf swing replicator prototype in SolidWorks 2014 with adjustable stand, ball holder, and swinging mechanism
- Fabricated the golf swing replicator prototype, utilizing the mill, lathe, and MIG welder
- Tested and analyzed golf swing replicator prototype
Athletic Experience
Krav Maga Instructor
Alaska Krav Maga & Fitness, Fairbanks, Alaska, USA
Winter 2017 -- Winter 2018
Taught Krav Maga, Muay Thai, and fitness classes to students at varying skill levels. Also trained in Brazilian Jiu Jitsu.
Junior A Tier III Hockey Player
Great Falls Americans, Great Falls, Montana, USA
Fall 2012 - Winter 2013
Played junior hockey in the American Western Hockey League; played as winger and typically killed penalties.
Junior A Tier III Hockey
Yellowstone Quake, Cody, Wyoming, USA
Winter 2013 - Spring 2014
Played junior hockey in the American Western Hockey League; played as winger and typically killed penalties.
Skills
Languages
- English (Native)
- French (A2)
- German (A2)
Programming Languages
- Python
- C/C++
- Julia
- Fortran
- MATLAB
- CUDA
- OpenCL
Platforms
- Linux
- Windows
- Arduino
- Raspberry Pi
Software
Publications
Peer Reviewed
- D. Keller, V. Somanna, P. Drobinski, C. Tard (2022) "Offshore CO2 Capture and Utilization Using Floating Wind/PV Systems: Site Assessment and Efficiency Analysis in the Mediterranean," Energies
- D. Keller, Y. Givon, R. Pennel, S. Raveh-Rubin, P. Drobinski (2022) "Untangling the mistral and seasonal atmospheric forcing driving deep convection in the Gulf of Lion: 2012-2013," Ocean Science
- D. Keller, D. R. Eagan, G. J. Fochesatto, R. Peterson, H. M. Chan, A. R. Parker (2019) "Advantages of Fiber Bragg Gratings for Measuring Electric Motor Loadings in Aerospace Application," Review of Scientific Instruments
Conference Proceedings
- G. J. Fochesatto, O. Galvz, P. Ristori, D. Keller, and E. L. Fochesatto (2017) "Lidar to Determine the Fraction of Ice, Liquid, and Water Vapor in Polar Tropospheric Clouds," Proceedings of the 28th International Laser Radar Conference, Bucharest, Romania, June 25-30, 2017
Presentations
- G. J. Fochesatto, D. Keller, E. Dieudonné, N. Brett, K. Law, S. Bekki, D. Atkinson, E. Wellton, E. Peterson (2023) "The Effects of the Large Scale Synoptic fields in the High Latitude PBL states," EGU General Assembly 2023, Vienna, Austria, April 23-28, 2023
- D. Keller, Y. Givon, F. Sevault, S. Somot, R. Pennel, S. Raveh-Rubin, P. Drobinski (2023) "Evolution of the Drivers of Stratification of the Gulf of Lion in a Changing Climate," EGU General Assembly 2023, Vienna, Austria, April 23-28, 2023
- D. Keller, Y. Givon, F. Sevault, S. Somot, R. Pennel, S. Raveh-Rubin, P. Drobinski (2023) "Evolution of the Drivers of Stratification of the Gulf of Lion in a Changing Climate," SiMed 2023, Toulouse, France, March 21-22, 2023
- D. Keller, Y. Givon, R. Pennel, P. Drobinski, and S. Raveh-Rubin (2022) "Impact and Variability of the Mistral and Atmospheric Forcing on Deep Convection in the Gulf of Lion," MedCLIVAR 2022 Conference, Marrakesh, Morocco, Oct. 4-8, 2022
- D. Keller, Y. Givon, R. Pennel, P. Drobinski, and S. Raveh-Rubin (2022) "Untangling the Mistral and Seasonal Effects of Atmospheric Forcing on Deep Convection in the Gulf of Lion," 1st MedCyclones Workshop and Training School, Athens, Greece, June 27 - July 2, 2022
- Y. Givon, D. Keller, V. Silverman, R. Pennel, P. Drobinski, and S. Raveh-Rubin (2022) "The mistral wind from a Rossby-wave perspective: a climatological classification of RWB," EGU General Assembly 2022, Vienna, Austria, May 23-27, 2022
- D. Keller, Y. Givon, R. Pennel, S. Raveh-Rubin, and P. Drobinski, (2022) "Variability of the Mistral and Seasonal Atmospheric Forcing on Deep Convection in the Gulf of Lion," EGU General Assembly 2022, Vienna, Austria, May 23-27, 2022
- D. Keller, Y. Givon, R. Pennel, P. Drobinski, and S. Raveh-Rubin (2022) "Mistral Dynamics and Impact on the Gulf of Lion Deep Convection," CNRS/WIS Workshop, Virtual, Israel, Apr. 13, 2022
- D. Keller (2021) "Effects of the Mistral on deep convection in the Gulf of Lion," SiMed 2021, Toulouse, France, Nov. 29-30, 2021
- D. Keller, G. J. Fochesatto, E. J. Welton, and J. Campbell (2021) "Spectral Changes in the Surface Turbulent Fluxes during Arctic Warmings: Combining MPLNET Lidar and Surface Turbulence Observations," 101st Annual American Meteorological Society Meeting, Virtual, USA, Jan. 9-16, 2021
- D. Keller, G. J. Fochesatto, E. J. Welton, and J. R. Campbell (2020) "The Spectral Signature of Surface Turbulent Fluxes during Arctic Warmings: Combining MPLNET Lidar and Surface Turbulence Observations," 100th Annual American Meteorological Society Meeting, Boston, USA, Jan. 12-16, 2020
- D. Keller, G. J. Fochesatto (2019) "Identifying the Conditions for the Occurrence of High Latitude Superior Mirages," Light and Color in Nature, Bar Harbor, Maine, USA, July 15, 2019
Posters
- Y. Givon, D. Keller, R. Pennel, P. Drobinski, S. Raveh-Rubin (2023) "Decomposing the role of dry intrusions for evaporation in the Gulf of Lion during Mistral," 2nd MedCyclones and 9th European Storm Workshop, Toulouse, France, June 28-30, 2023
- D. Keller, Y. Givon, R. Pennel, S. Raveh-Rubin, P. Drobinski (2023) "Effects of the Mistral on the Overturning Circulation of the Northwestern Mediterranean Sea," 2nd MedCyclones and 9th European Storm Workshop, Toulouse, France, June 28-30, 2023
- D. Keller, P. Drobinski, C. Tard (2023) "Offshore CO2 capture and utilization using floating wind/PV systems: Site assessment and efficiency analysis in the Mediterranean," 9th International Conference on Meteorology and Climatology of the Mediterranean, Genoa, Italy, May 22-24, 2023
- D. Keller, G. J. Fochesatto, E. Dieudonné, N. Brett, K. Law, S. Bekki, D. E. Atkinson, E. J. Welton, and E. Peterson (2023) "Breakup of Surface Based Temperature Inversion Layers by Direct Radiative Forcing: Study Cases during ALPACA-PBL," 103rd Annual American Meteorological Society Meeting, Denver, Colorado, USA, Jan. 8-12, 2023
- D. Keller, G. J. Fochesatto, E. Dieudonné, N. Brett, K. Law, S. Bekki, D. E. Atkinson, and E. Peterson (2023) "Buildup of the Surface Based Temperature Inversions during ALPACA-PBL," 103rd Annual American Meteorological Society Meeting, Denver, Colorado, USA, Jan. 8-12, 2023
- D. E. Atkinson, G. J. Fochesatto, N. Brett, R. Pohorsky, A. Baccarini, D. Keller, S. Bekki, E. Peterson, J. Maillard, K. Law, F. Ravetta, J.-C. Raut, J. Schmale, and Y. Harazono (2023) "Energy Balance Evolution and Forcing across the ALPACA-PBL domain," 103rd Annual American Meteorological Society Meeting, Denver, Colorado, USA, Jan. 8-12, 2023
- G. J. Fochesatto, E. Dieudonné, J. Maillard, N. Brett, G. Pappaccogli, K. Law, D. Keller, F. Ravetta, J.-C. Raut, E. Peterson, A. Donateo, and S. Decesari (2023) "The Effects of Shallow Cold Flows in the PBL State. Analysis of Experimental Datasets during Alpaca-PBL Winter Field Experiment," 103rd Annual American Meteorological Society Meeting, Denver, Colorado, USA, Jan. 8-12, 2023
- G. J. Fochesatto, N. Brett, K. Law, R. Pohorsky, A. Baccarini, B. Barret, G. Pappaccogli, F. Scoto, M. Busetto, E. Dieudonné, S. Albertin, S. Bekki, J. Maillard, M. C. Maloney, J.-C. Raut, F. Ravetta, D. E. Atkinson, D. Keller, T. Roberts, J. Schmale, S. Decesari, A. Donateo, K. Doulgeris, D. Brus, S. Arnold, J. Mao, and W. Simpson (2023) "Overview of the ALPACA-PBL Winter Field Experiment," 103rd Annual American Meteorological Society Meeting, Denver, Colorado, USA, Jan. 8-12, 2023
- D. Keller, V. Somanna, C. Tard, and P. Drobinski (2022) "METMED: Mapping Potential Methanol Production through Carbon Dioxide Removal in the Mediterranean Sea," Ocean Science Meeting 2022, Virtual, USA, Feb. 24 - Mar. 4, 2022
- D. Keller, R. Pennel, Y. Givon, S. Raveh-Rubin, and P. Drobinski (2021) "Untangling the Mistral and Seasonal Effects of Atmospheric Forcing on Deep Convection in the Gulf of Lion," 101st Annual American Meteorological Society Meeting, Virtual, USA, Jan. 9-16, 2021
- D. Keller, R. Pennel, Y. Givon, S. Raveh-Rubin, and P. Drobinski (2020) "Untangling the Mistral and Seasonal Effects of Atmospheric Forcing on Deep Convection in the Gulf of Lion," Med2020 - Méditerranée : L'Expertise Scientifique pour les Décideurs, Virtual, France, Nov. 16-18, 2020
- D. Keller, G. J. Fochesatto (2020) "Representation of Microscale Surface Turbulent Fluxes in the Planetary Boundary Layer: The Case of the Complex Heterogeneous Terrain of the Arctic Tundra," 100th Annual American Meteorological Society Meeting, Boston, Massachusetts, USA, Jan. 12-16, 2020
- D. Keller, G. J. Fochesatto (2019) "New Wavelet to Determine the Planetary Boundary Layer Height," 99th Annual American Meteorological Society Meeting, Pheonix, Arizona, USA, Jan. 6-10, 2019
- D. Keller, G. J. Fochesatto (2018) "RAOBs and Micro Pulse Lidar Determination of the Atmospheric Boundary Layer," Alaska Space Grant Program Annual Symposium, Anchorage, Alaska, USA, April 20, 2018
- D. Keller, D. Eagan (2018) "FOSS Load Cell," Undergraduate Research and Scholarly Activity Research Day, Fairbanks, Alaska, USA, April 10, 2018
In Progress
- D. Keller, Y. Givon, R. Pennel, S. Raveh-Rubin, and P. Drobinski (2022) "Untangling the Mistral and Seasonal Atmospheric Forcing Driving Deep Convection in the Gulf of Lion: Seasonal Variability," JGR Oceans
- D. Keller, G. J. Fochesatto (2022) "Seasonal Variation of Superior Mirages,"
- D. Keller, V. Somanna, P. Drobinski, and C. Tard (2022) "pyseafuel: A Python package to simulate methanol production from seawater," JOSS