Nicolas Vuichard
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View article: Uncertainties in fertilizer-induced emissions of soil nitrogen oxide and the associated impacts on ground-level ozone and methane
Uncertainties in fertilizer-induced emissions of soil nitrogen oxide and the associated impacts on ground-level ozone and methane Open
Natural and agricultural soils are important sources of nitrogen oxides (NOx), accounting for about 10 %–20 % of the global NOx emissions. The increased application of nitrogen (N) fertilizer in agriculture has strongly enhanced the N avai…
View article: Plant Hydraulic Architecture for a Mechanistic Representation of Soil‐Plant‐Atmosphere Water Transfer in the Land Surface Model ORCHIDEE (r9107)
Plant Hydraulic Architecture for a Mechanistic Representation of Soil‐Plant‐Atmosphere Water Transfer in the Land Surface Model ORCHIDEE (r9107) Open
Land surface models (LSMs) typically represent soil moisture control on stomatal conductance through an empirical sensitivity function, without considering plant hydrology. This study proposes integrating water transfer representation with…
View article: IPSL-Perm-LandN: improving the IPSL Earth System Model to represent permafrost carbon-nitrogen interactions
IPSL-Perm-LandN: improving the IPSL Earth System Model to represent permafrost carbon-nitrogen interactions Open
Permafrost soils have the potential to release large amounts of soil carbon to the atmosphere under climate change. However, in the Sixth Coupled Model Intercomparison Project (CMIP6), only two Earth System Models (ESM) represented permafr…
View article: Land Surface Model Underperformance Tied to Specific Meteorological Conditions
Land Surface Model Underperformance Tied to Specific Meteorological Conditions Open
The exchange of carbon, water, and energy fluxes between the land and the atmosphere plays a vital role in shaping our understanding of global change and how climate change will affect extreme events. Yet our understanding of the theory of…
View article: Biogeochemical versus biogeophysical temperature effects of historical land-use change in CMIP6
Biogeochemical versus biogeophysical temperature effects of historical land-use change in CMIP6 Open
Anthropogenic land-use change (LUC) substantially impacts climate dynamics, primarily through modifications in the surface biogeophysical (BGP) and biogeochemical (BGC) fluxes, which alter the exchange of energy, water, and carbon with the…
View article: Uncertainties in fertilizer-induced emissions of soil nitrogen oxide and the associated impacts on ground-level ozone and methane
Uncertainties in fertilizer-induced emissions of soil nitrogen oxide and the associated impacts on ground-level ozone and methane Open
Natural and agricultural soils are important sources of nitrogen oxides (NOx), accounting for about 10 %–20 % of the global NOx emissions. The increased application of nitrogen (N) fertilizer in agriculture has strongly enhanced the N avai…
View article: Forestation in CMIP6: wide model spread in tree cover and land carbon uptake
Forestation in CMIP6: wide model spread in tree cover and land carbon uptake Open
Forestation is expected to play an significant role as a terrestrial carbon dioxide removal technology in low-emission scenarios by storing carbon in the biosphere, thereby changing the physical properties of the land surface. To represent…
View article: Future Trends of Global Agricultural Emissions of Ammonia in a Changing Climate
Future Trends of Global Agricultural Emissions of Ammonia in a Changing Climate Open
Because of human population growth and changes in diet, global livestock and associated ammonia , emissions are projected to increase through the end of the century, with possible impacts on atmospheric chemistry and climate. In this study…
View article: Global net cooling effects of anthropogenic reactive nitrogen: the unneglectable roles of short-lived nitrogen components
Global net cooling effects of anthropogenic reactive nitrogen: the unneglectable roles of short-lived nitrogen components Open
Anthropogenic activities have substantially enhanced the loadings of reactive nitrogen (Nr) in the Earth system since pre-industrial times, contributing to widespread eutrophication and air pollution. Increased Nr can also influence global…
View article: Implications of permafrost carbon cycle feedbacks for TCRE: evidence from Earth system modeling
Implications of permafrost carbon cycle feedbacks for TCRE: evidence from Earth system modeling Open
TCRE – the linearity between global warming and cumulative anthropogenic CO2 emissions – underpins the concept of remaining carbon budgets and is critical for designing mitigation policies in line with the Paris Agreement. The …
View article: Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate
Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate Open
Agricultural practices are a major source of ammonia (NH3) in the atmosphere, which has implications for air quality, climate, and ecosystems. Due to the rising demand for food and feed production, ammonia emissions are expected to increas…
View article: On the predictability of turbulent fluxes from land: PLUMBER2 MIP experimental description and preliminary results
On the predictability of turbulent fluxes from land: PLUMBER2 MIP experimental description and preliminary results Open
Accurate representation of the turbulent exchange of carbon, water, and heat between the land surface and the atmosphere is critical for modelling global energy, water, and carbon cycles in both future climate projections and weather forec…
View article: Projected changes in land carbon store over the 21st century: what contributions from land use change and atmospheric nitrogen deposition?
Projected changes in land carbon store over the 21st century: what contributions from land use change and atmospheric nitrogen deposition? Open
Earth system models (ESMs) represent the time evolution of the biophysical (energy and water cycles) and biogeochemical (carbon cycle) components of the Earth. When used for near-future projections in the context of the Coupled Model Inter…
View article: Biogeochemical versus biogeophysical temperature effects of historical land-use change in CMIP6
Biogeochemical versus biogeophysical temperature effects of historical land-use change in CMIP6 Open
Anthropogenic land-use change (LUC) substantially impacts climate dynamics, primarily through modifications in the surface biogeophysical (BGP) and biogeochemical (BGC) fluxes, which alter the exchange of energy, water, and carbon with the…
View article: Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate
Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate Open
Agricultural practices are responsible for a major source of ammonia (NH3) to the atmosphere which has implications for air quality, climate and ecosystems. Due to the intensification of food and feed production, ammonia emissions are expe…
View article: Supplementary material to "Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate"
Supplementary material to "Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate" Open
0.0 1.0 2.0 3.0 4.0 5.0 6.0 gN.m 2 .yr 1 0.0 1.0 2.0 3.0 4.0 5.0 6.0 gN.m 2 .yr 1 0.0 1.0 2.0 3.0 4.0 5.0 6.0 gS.m 2 .yr 1 Figure S1.Annual emissions of NH3 (first column), NOx (second column), SO2 (third column) (gNm -2 yr -1 , gSm -2 yr …
View article: Enhanced nitrous oxide emission factors due to climate change increase the mitigation challenge in the agricultural sector
Enhanced nitrous oxide emission factors due to climate change increase the mitigation challenge in the agricultural sector Open
Effective nitrogen fertilizer management is crucial for reducing nitrous oxide (N 2 O) emissions while ensuring food security within planetary boundaries. However, climate change might also interact with management practices to alter N 2 O…
View article: Global net climate effects of anthropogenic reactive nitrogen
Global net climate effects of anthropogenic reactive nitrogen Open
Anthropogenic activities have substantially enhanced the loadings of reactive nitrogen (Nr) in the Earth system since pre-industrial times 1,2 , contributing to widespread eutrophication and air pollution 3–6 . Increased Nr can also influe…
View article: The Modeled Seasonal Cycles of Surface N <sub>2</sub> O Fluxes and Atmospheric N <sub>2</sub> O
The Modeled Seasonal Cycles of Surface N <sub>2</sub> O Fluxes and Atmospheric N <sub>2</sub> O Open
Nitrous oxide (N 2 O) is a greenhouse gas and stratospheric ozone‐depleting substance with large and growing anthropogenic emissions. Previous studies identified the influx of N 2 O‐depleted air from the stratosphere to partly cause the se…
View article: Uneven consequences of global climate mitigation pathways on regional water quality in the 21st century
Uneven consequences of global climate mitigation pathways on regional water quality in the 21st century Open
Future socioeconomic climate pathways have regional water-quality consequences whose severity and equity have not yet been fully understood across geographic and economic spectra. We use a process-based, terrestrial-freshwater ecosystem mo…
View article: Global nitrous oxide budget (1980–2020)
Global nitrous oxide budget (1980–2020) Open
Nitrous oxide (N2O) is a long-lived potent greenhouse gas and stratospheric ozone-depleting substance that has been accumulating in the atmosphere since the preindustrial period. The mole fraction of atmospheric N2O has increased by nearly…
View article: First steps towards modelling the intra-canopy microclimate in the ORCHIDEE Land Surface Model
First steps towards modelling the intra-canopy microclimate in the ORCHIDEE Land Surface Model Open
Intra-canopy microclimate and regional climate are two highly related components of the Earth system. On one side, intra-canopy microclimate influences strongly the ecosystem itself by regulating the vegetation/atmosphere exchanges which f…
View article: Revisiting vegetation carbon and water flux representation during drought events in the ORCHIDEE land surface model
Revisiting vegetation carbon and water flux representation during drought events in the ORCHIDEE land surface model Open
Climate change is projected to increase the frequency and intensity of droughts, inducing further water stress on vegetation. These water stress conditions impact both vegetation carbon and water exchanges that are regulated through stomat…
View article: Reply on RC1
Reply on RC1 Open
Abstract. Earth System Models (ESM) represent the time evolution of the biophysical (energy, water cycles) and biogeochemical (carbon cycle) components of the Earth. When used for near-future projections in the context of the Coupled Model…
View article: Using Free Air CO <sub>2</sub> Enrichment data to constrain land surface model projections of the terrestrial carbon cycle
Using Free Air CO <sub>2</sub> Enrichment data to constrain land surface model projections of the terrestrial carbon cycle Open
Predicting the responses of terrestrial ecosystem carbon to future global change strongly relies on our ability to model accurately the underlying processes at a global scale. However, terrestrial biosphere models representing the carbon a…