A5076985970- Soil Carbon and Nitrogen Dynamics
- Climate change and permafrost
- Soil and Water Nutrient Dynamics
- Peatlands and Wetlands Ecology
- Cryospheric studies and observations
- Biofuel production and bioconversion
- Bioenergy crop production and management
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Plant nutrient uptake and metabolism
- Forest Biomass Utilization and Management
- Agriculture, Soil, Plant Science
- Forest Insect Ecology and Management
- Climate variability and models
- Seismology and Earthquake Studies
- Species Distribution and Climate Change
- Geological Studies and Exploration
- Methane Hydrates and Related Phenomena
- Plant Water Relations and Carbon Dynamics
Centre National de la Recherche Scientifique
2017-2020
Laboratoire des Sciences du Climat et de l'Environnement
2017-2020
Université de Versailles Saint-Quentin-en-Yvelines
2017-2020
CEA Paris-Saclay
2017-2018
Université Paris-Saclay
2017-2018
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2017-2018
Abstract. The high-latitude regions of the Northern Hemisphere are a nexus for interaction between land surface physical properties and their exchange carbon energy with atmosphere. At these latitudes, two pools planetary significance – those permanently frozen soils (permafrost), great expanse boreal forest vulnerable to destabilization in face currently observed climatic warming, speed intensity which expected increase time. Improved projections future Arctic ecosystem transformation...
Abstract. Land surface models rarely incorporate the terrestrial phosphorus cycle and its interactions with carbon cycle, despite extensive scientific debate about importance of nitrogen supply for future land uptake. We describe a representation ORCHIDEE model, evaluate it data from nutrient manipulation experiments along soil formation chronosequence in Hawaii. accounts influence nutritional state vegetation on tissue concentrations, photosynthesis, plant growth, biomass allocation,...
Abstract. Current land surface models (LSMs) typically represent soils in a very simplistic way, assuming soil organic carbon (SOC) as bulk, and thus impeding correct representation of deep dynamics. Moreover, LSMs generally neglect the production export dissolved (DOC) from to rivers, leading overestimations potential sequestration on land. This common oversimplified processing SOC is partly responsible for large uncertainty predictions response climate change. In this study, we present new...
Insect disturbances significantly impact multiple functions of forest ecosystems, yet their representation in terrestrial biosphere models remains limited. To address this gap, we developed an insect impacts module the model QUINCY (QUantifying Interactions between Nutrient CYcles and climate system model). The new represents bark-beetle defoliator by introducing standing dead biomass pools insect-mediated nutrient cycling pathways, effectively capturing key processes such as snag decay,...
Modeling of global soil organic carbon (SOC) is accompanied by large uncertainties. The heavy computational requirement limits our flexibility in disentangling uncertainty sources especially high latitudes. We build a structured sensitivity analyzing framework through reorganizing the Organizing Carbon and Hydrology Dynamic Ecosystems (ORCHIDEE)-aMeliorated Interactions between Temperature (MICT) model with vertically discretized SOC into one matrix equation, which brings comprehensive...
Abstract. Bioenergy crop cultivation for lignocellulosic biomass is increasingly important future climate mitigation, and it assumed on large scales in integrated assessment models (IAMs) that develop land use change scenarios consistent with the dual constraint of sufficient food production deep decarbonization low climate-warming targets. In most global vegetation models, there no specific representation crops producing biomass, resulting simulation biases yields other carbon outputs, turn...
Abstract. Land surface models rarely incorporate the terrestrial phosphorus cycle and its interactions with carbon cycle, despite extensive scientific debate about importance of nitrogen supply for future land uptake. We describe a representation model ORCHIDEE, evaluate it data from nutrient manipulation experiments along soil formation chronosequence in Hawaii. ORCHIDEE accounts influence nutritional state vegetation on tissue concentrations, photosynthesis, plant growth, biomass...
Abstract. The high-latitude regions of the northern hemisphere are a nexus for interaction between land surface physical properties and their exchange carbon energy with atmosphere. At these latitudes, two pools planetary significance – those permanently frozen soils (permafrost), great expanse boreal forest vulnerable to destabilization in face currently observed climatic warming, speed intensity which expected increase time. Improved projections future Arctic ecosystem transformation...
Abstract. Current Land Surface Models (LSMs) typically represent soils in a very simplistic way, assuming soil organic carbon (SOC) as bulk, thus impeding correct representation of deep dynamics. Moreover, LSMs generally neglect the production and export dissolved (DOC) from to rivers, leading overestimations potential sequestration on land. These common oversimplified processing SOC is partly responsible for large uncertainty predictions response climate change. In this study, we present...
Abstract. Bioenergy crop cultivation for lignocellulosic biomass is increasingly important future climate mitigation, and it assumed on large scales in Integrated Assessment Models (IAMs) that develop land use change scenarios consistent with the dual constraint of sufficient food production deep de-carbonization low warming targets. In most global vegetation models, there no specific representation crops producing biomass, resulting simulation biases yields other carbon outputs, turn...
ORCHIDEE-SOM: Modeling soil organic
<p>The rivers of the Arctic permafrost region discharge about 11% global volumetric river water flux into oceans, doing so an ocean (the Arctic) with 1% volume and a very high surface area: ratio, making it comparatively sensitive to influxes terrestrially derived matter. This is sourced from precipitation as either rain or snow, which, upon initial contact landscape has immediate potential interact carbon(C) in one two ways: Water running over carbonate silicate...