A. C. HADDON
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Oceanic DMS strongly affects aerosols and clouds in the Arctic Open
Arctic aerosol, cloud, and surface radiation budgets are highly sensitive to how dimethylsulfide (DMS) is represented in atmospheric models. We investigate the impact of (1) the gas-phase DMS oxidation mechanism (simple versus complex), (2…
The importance of oceanic emissions for modelling Arctic aerosols and clouds Open
Emissions of primary aerosols and aerosol precursors from the ocean are key for the Arctic climate. Among those, secondary aerosols from oceanic dimethylsulfide (DMS) are a key species for aerosol-radiation and aerosol-cloud interactions. …
Simulated increases of future Arctic dimethylsulfide ocean concentrations, emissions and high-flux events Open
Simulations from a regional ocean and sea ice model are presented to analyze the potential impacts of climate change on dimethylsulfide (DMS) ocean concentrations and emissions in the Arctic Ocean during the 21st century for a scenario of …
View article: Mapping Potential Timing of Ice Algal Blooms From Satellite
Mapping Potential Timing of Ice Algal Blooms From Satellite Open
As Arctic sea ice and its overlying snow cover thin, more light penetrates into the ice and upper ocean, shifting the phenology of algal growth within the bottom of sea ice, with cascading impacts on higher trophic levels of the Arctic mar…
Environmental controls and phenology of sea ice algal growth in a future Arctic Open
The future of Arctic sea ice algae is examined using a regional ocean and sea ice biogeochemical model, with a simulation from 1980 to 2085, considering a future scenario with strong warming. To analyze the impacts of climate change, we co…
Contribution of modeling and control for improving nutrient recycling via reuse Open
This paper presents a systemic viewpoint making use of modeling and control tools to promote the flexibility of a water reuse chain and dynamically adapt the quality of treated waters to plant needs, notably using output feedbacks. The pro…
Multi-objective Dynamic Optimization of Crops Irrigated with Reused Treated Wastewater Open
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Optimal Control of Irrigation and Fertigation for Wastewater Reuse with a Double Modelling Method Open
We study an optimal control problem of crop irrigation and fertigation with treated wastewater that contains vital crop nutrients, with the objectives of maximizing crop production and minimizing environmental and farming costs. A double m…
Optimal release of mosquitoes to control dengue transmission Open
\nIn order to prevent the propagation of human diseases transmitted by mosquitoes (as dengue or zika), a solution is to release mosquitoes infected by Wolbachia. In this study, we model the release and the propagation over time and space o…
Simulation of spatially distributed intensive biological systems Open
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Optimal release of mosquitoes to control dengue transmission Open
In order to prevent the propagation of human diseases transmitted by mosquitoes (as dengue or zika), a solution is to release mosquitoes infected by Wolbachia . In this study, we model the release and the propagation over time and space of…
Mathematical Modeling and Optimization for Biogas Production Open
Anaerobic digestion is a biological process in which organic compounds are degraded by different microbial populations into biogas (carbon dioxyde and methane), which can be used as a renewable energy source. This thesis works towards deve…
Optimal and Sub-optimal Feedback Controls for Biogas Production Open
We revisit the optimal control problem of maximizing biogas production in continuous bio-processes in two directions: 1. over an infinite horizon, 2. with sub-optimal controllers independent of the time horizon. For the first point, we ide…
First results of optimal control of average biogas production for the chemostat over an infinite horizon Open
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Guaranteed value strategy for the optimal control of biogas production in continuous bio-reactors Open
In this work, we revisit a problem of optimal control for the maximisation of biogas production in a continuous bioreactor, for which the analytical determination of the optimal synthesis is an open problem. We consider two kinds of growth…