A5084383768- Atmospheric and Environmental Gas Dynamics
- Plant Water Relations and Carbon Dynamics
- Soil Carbon and Nitrogen Dynamics
- Plant responses to elevated CO2
- Cryospheric studies and observations
- Climate variability and models
- Climate change and permafrost
- Peatlands and Wetlands Ecology
- Atmospheric aerosols and clouds
- Arctic and Antarctic ice dynamics
- Forest Management and Policy
- Spectroscopy and Laser Applications
- Soil and Water Nutrient Dynamics
- Meteorological Phenomena and Simulations
- Carbon Dioxide Capture Technologies
- Calibration and Measurement Techniques
- Aeolian processes and effects
- Crop Yield and Soil Fertility
- Market Dynamics and Volatility
- Odor and Emission Control Technologies
- Ecology, Conservation, and Geographical Studies
- Radioactive contamination and transfer
- Advanced Combustion Engine Technologies
- Soil and Unsaturated Flow
- Soil erosion and sediment transport
Territoires, Environnement, Télédétection et Information Spatiale
2019-2020
Territoires
2019-2020
GFZ Helmholtz Centre for Geosciences
2016-2018
Swedish University of Agricultural Sciences
2017-2018
Écologie Fonctionnelle et Écotoxicologie des Agroécosystèmes
2015
AgroParisTech
2007-2011
Institut National de la Recherche Agronomique
2007
Abstract. The response of crops to changing climate and atmospheric CO2 concentration ([CO2]) could have large effects on food production, impact carbon, water, energy fluxes, causing feedbacks the climate. To simulate temperate [CO2], which accounts for specific phenology mediated by management practice, we describe here development a process-oriented terrestrial biogeochemical model named ORCHIDEE-CROP (v0), integrates generic crop harvest module, very simple parameterization nitrogen...
Abstract. Drained peatlands often act as carbon dioxide (CO2) hotspots. Raising the groundwater table is expected to reduce their CO2 contribution atmosphere and revitalise function (C) sink in long term. Without strict water management rewetting results partial flooding formation of spatially heterogeneous, nutrient-rich shallow lakes. Uncertainties remain when intended effect achieved, this specific ecosystem type has hardly been investigated terms greenhouse gas (GHG) exchange. In most...
The present paper deals with a boundary layer budgeting method which makes use of observations from various in situ and remote sensing instruments to infer regional average net ecosystem exchange (NEE) CO 2 . Measurements within above the atmospheric (ABL) by sensors, conjunction precise knowledge change ABL height lidar radiosoundings, enable diurnal seasonal NEE variations. Near‐ground measurements are used discriminate natural anthropogenic contributions variations ABL. yields mean that...
Abstract We conducted eddy covariance measurements from April to August 2014 on a Siberian thermokarst lake. The study site is located in the Lena River Delta and characterized as floating ice Heat fluxes differed magnitudes, directions temporal patterns depending lake surface conditions (“frozen” cover, cover melt, open water). Significant heat release during frozen highlighted importance of lakes for landscape budget water balance. energy balance was nearly closed period impact melting its...
Abstract. To investigate if the LI-COR humidity sensor can be used as a replacement of Lyman-alpha for airborne applications, measurement data and several sensors are analysed in direct intercomparison flights on different platforms. One vibration isolated closed-path two non-isolated open-path were installed Dornier 128 twin engine turbo-prop aircraft. The provided absolute values fluctuations water vapour mixing ratio good agreement with Lyman-alpha. signals showed considerable...
Abstract. The responses of crop functioning to changing climate and atmospheric CO2 concentration ([CO2]) could have large effects on food production, impact carbon, water energy fluxes, causing feedbacks climate. To simulate the temperate crops [CO2], accounting for specific phenology mediated by management practice, we present here development a process-oriented terrestrial biogeochemical model named ORCHIDEE-CROP (v0), which integrates generic harvest module very simple parameterization...
Abstract. Lidar scan angle can affect estimation of lidar-derived forest metrics used in area-based approaches (ABAs). As commonly first-order and various user-developed are computed the form a grid or raster, their response to angles needs be investigated similarly. The objective this study was highlight impact on 11 (9 height-based 2 other metrics) at level grid-cell. area divided into cell size 30 m. In every grid-cell, flight lines that sampled least 90% grid-cell were identified....
Abstract. Nitrous oxide, carbon dioxide and methane are the main biogenic greenhouse gases (GHG) contributing to global warming potential (GWP) of agro-ecosystems. Evaluating impact agriculture on climate thus requires a capacity predict net exchanges these in an integrated manner, as related environmental conditions crop management. Here, we used two year-round data sets from intensively-monitored cropping systems northern France test ability biophysical model CERES-EGC simulate GHG at...
Abstract. The properties of fast hygrometers, the Lyman-Alpha and different LICOR humidity sensors, are analysed in direct intercomparison flights on airborne platforms. One vibration isolated closed-path two non-isolated open path sensors were installed twin engine turbo-prop aircraft Dornier 128. sensor provided absolute values fluctuations water vapour mixing ratio good agreement with Lyman-Alpha. signals open-path showed considerable high frequency noise, value was observed to drift time...