Ingrid T. Luijkx
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View article: Increasing diurnal and seasonal amplitude of atmospheric methane mole fraction in Central Siberia between 2010–2021
Increasing diurnal and seasonal amplitude of atmospheric methane mole fraction in Central Siberia between 2010–2021 Open
Siberia's vast wetlands, permafrost, and boreal forests are significant, but their sources of methane (CH4) are poorly quantified. Using vertical CH4 profiles and meteorological data from the ZOtino Tall Tower Observatory (ZOTTO; 60°48′ N,…
View article: Global Carbon Budget 2025
Global Carbon Budget 2025 Open
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to better understand the global carbon cycle, support the…
View article: Technical note: New insights into stomatal oxygen transport viewed as a multicomponent diffusion process
Technical note: New insights into stomatal oxygen transport viewed as a multicomponent diffusion process Open
We investigate oxygen (O2) transport through stomata, focusing on its interaction with water vapour (H2O) flux. The dominant H2O flux exerts a drag force on other gases, a well-studied effect in the ternary air–water vapor–carbon dioxide (…
View article: Tracing Diurnal Variations of Atmospheric CO <sub>2</sub> , O <sub>2</sub> , and δ13 ${\boldsymbol{\delta }}^{\mathbf{13}}$CO <sub>2</sub> Over a Tropical and a Temperate Forest
Tracing Diurnal Variations of Atmospheric CO <sub>2</sub> , O <sub>2</sub> , and δ13 ${\boldsymbol{\delta }}^{\mathbf{13}}$CO <sub>2</sub> Over a Tropical and a Temperate Forest Open
We analyze the diurnal variability of atmospheric , , and CO 2 above the canopies of two contrasting ecosystems: the Amazon tropical forest and the Loobos temperate forest. Using a coupled forest‐atmosphere model constrained by tower‐based…
View article: The Atmospheric Potential Oxygen forward Model Intercomparison Project (APO-MIP1): evaluating simulated atmospheric transport of air-sea gas exchange tracers and APO flux products
The Atmospheric Potential Oxygen forward Model Intercomparison Project (APO-MIP1): evaluating simulated atmospheric transport of air-sea gas exchange tracers and APO flux products Open
Atmospheric Potential Oxygen (APO, defined as O2 + 1.1 × CO2) is primarily a tracer of ocean biogeochemistry and fossil fuel burning. APO exhibits strong seasonal variability at mid-to-high latitudes, driven mainly by seasonal air-sea O2 e…
View article: Increasing Diurnal and Seasonal Amplitude of Atmospheric Methane Mole Fraction in Central Siberia between 2010–2021
Increasing Diurnal and Seasonal Amplitude of Atmospheric Methane Mole Fraction in Central Siberia between 2010–2021 Open
Siberia's vast wetlands, permafrost, and boreal forests are significant, but their sources of methane (CH4) are poorly quantified. Using vertical CH4 profiles and meteorological data from the ZOtino Tall Tower Observatory (ZOTTO; 60°48′ N,…
View article: A top-down view of global and regional carbon budgets from an ensemble of atmospheric inversions
A top-down view of global and regional carbon budgets from an ensemble of atmospheric inversions Open
International audience
View article: Technical note: New insights into stomatal oxygen transport viewed as a multicomponent diffusion process
Technical note: New insights into stomatal oxygen transport viewed as a multicomponent diffusion process Open
We investigate oxygen (O2) transport through stomata, focusing on its interaction with water vapour (H2O) flux. The dominant H2O flux exerts a drag force on other gases, a well-studied effect in the ternary air–water vapour–carbon dioxide …
View article: Combined CO <sub>2</sub> measurement record indicates Amazon forest carbon uptake is offset by savanna carbon release
Combined CO <sub>2</sub> measurement record indicates Amazon forest carbon uptake is offset by savanna carbon release Open
In tropical South America there has been substantial progress in atmospheric monitoring capacity, but the region still has a limited number of continental atmospheric stations relative to its large area, hindering net carbon flux estimates…
View article: The Atmospheric Potential Oxygen forward Model Intercomparison Project (APO-MIP1): Evaluating simulated atmospheric transport of air-sea gas exchange tracers and APO flux products
The Atmospheric Potential Oxygen forward Model Intercomparison Project (APO-MIP1): Evaluating simulated atmospheric transport of air-sea gas exchange tracers and APO flux products Open
Atmospheric Potential Oxygen (APO, defined as O2 + 1.1 × CO2 ) is a tracer of air-sea O2 exchange, exhibiting strong seasonal variability over mid-to-high latitudes. We present results from the first version of Atmospheric Potential Oxygen…
View article: The North American Greenhouse Gas Budget: Emissions, Removals, and Integration for CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O (2010–2019): Results From the Second REgional Carbon Cycle Assessment and Processes Study (RECCAP2)
The North American Greenhouse Gas Budget: Emissions, Removals, and Integration for CO<sub>2</sub>, CH<sub>4</sub>, and N<sub>2</sub>O (2010–2019): Results From the Second REgional Carbon Cycle Assessment and Processes Study (RECCAP2) Open
Accurate accounting of greenhouse‐gas (GHG) emissions and removals is central to tracking progress toward climate mitigation and for monitoring potential climate‐change feedbacks. GHG budgeting and reporting can follow either the Intergove…
View article: Global greenhouse gas reconciliation 2022
Global greenhouse gas reconciliation 2022 Open
In this study, we provide an update on the methodology and data used by Deng et al. (2022) to compare the national greenhouse gas inventories (NGHGIs) and atmospheric inversion model ensembles contributed by international research teams co…
View article: Global Carbon Budget 2024
Global Carbon Budget 2024 Open
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to better understand the global carbon cycle, support the…
View article: Global Carbon Budget 2024
Global Carbon Budget 2024 Open
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to better understand the global carbon cycle, support the…
View article: Permafrost Region Greenhouse Gas Budgets Suggest a Weak CO<sub>2</sub> Sink and CH<sub>4</sub> and N<sub>2</sub>O Sources, But Magnitudes Differ Between Top‐Down and Bottom‐Up Methods
Permafrost Region Greenhouse Gas Budgets Suggest a Weak CO<sub>2</sub> Sink and CH<sub>4</sub> and N<sub>2</sub>O Sources, But Magnitudes Differ Between Top‐Down and Bottom‐Up Methods Open
Large stocks of soil carbon (C) and nitrogen (N) in northern permafrost soils are vulnerable to remobilization under climate change. However, there are large uncertainties in present‐day greenhouse gas (GHG) budgets. We compare bottom‐up (…
View article: Global covariation of forest age transitions with the net carbon balance
Global covariation of forest age transitions with the net carbon balance Open
Understanding the impact of forest age transitions on the global net carbon balance is critical for advancing forest management and climate change mitigation strategies. We analysed changes in the global forest age (2010-2020) using the Gl…
View article: Carbon and Greenhouse Gas Budgets of Europe: Trends, Interannual and Spatial Variability, and Their Drivers
Carbon and Greenhouse Gas Budgets of Europe: Trends, Interannual and Spatial Variability, and Their Drivers Open
In the framework of the RECCAP2 initiative, we present the greenhouse gas (GHG) and carbon (C) budget of Europe. For the decade of the 2010s, we present a bottom‐up (BU) estimate of GHG net‐emissions of 3.9 Pg CO 2 ‐eq. yr −1 (using a glob…
View article: Combined CO <sub>2</sub> measurement record indicates decreased Amazon forest carbon uptake, offset by Savannah carbon release
Combined CO <sub>2</sub> measurement record indicates decreased Amazon forest carbon uptake, offset by Savannah carbon release Open
In tropical South America there has been substantial progress on atmospheric monitoring capacity, but the region still has a limited number of continental atmospheric stations relative to its large area, hindering net carbon flux estimates…
View article: Global Greenhouse Gas Reconciliation 2022
Global Greenhouse Gas Reconciliation 2022 Open
In this study, we provide an update of the methodology and data used by Deng et al. (2022) to compare the national greenhouse gas inventories (NGHGIs) and atmospheric inversion model ensembles contributed by international research teams co…
View article: Separating above-canopy CO <sub>2</sub> and O <sub>2</sub> measurements into their atmospheric and biospheric signatures
Separating above-canopy CO <sub>2</sub> and O <sub>2</sub> measurements into their atmospheric and biospheric signatures Open
Atmospheric tracers are often used to interpret the local CO2 budget, where measurements at a single height are assumed to represent local flux signatures. Alternatively, these signatures can be derived from direct flux measurements or by …
View article: Carbon and greenhouse gas budgets of Europe: trends, interannual and spatial variability, and their drivers
Carbon and greenhouse gas budgets of Europe: trends, interannual and spatial variability, and their drivers Open
In the framework of the RECCAP2 initiative, we present the greenhouse gas (GHG) and carbon (C) budget of Europe. For the decade of the 2010s, we present a bottom-up (BU) estimate of GHG net-emissions of 3.9 Pg CO2-eq. yr-1 (global warming …