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View article: Drivers and CO <sub>2</sub> flux budgets in a Sahelian Faidherbia albida agro-silvo-pastoral parkland: Insights from continuous high-frequency soil chamber measurements and Eddy Covariance
Drivers and CO <sub>2</sub> flux budgets in a Sahelian Faidherbia albida agro-silvo-pastoral parkland: Insights from continuous high-frequency soil chamber measurements and Eddy Covariance Open
Agroforestry systems — combining trees with crops and/or livestock — are increasingly promoted as sustainable and climate-resilient land-use strategies. Despite their widespread presence in the Sahel, experimental data on their potential a…
View article: Variability of greenhouse gas (CH <sub>4</sub> and CO <sub>2</sub> ) emissions in a subtropical hydroelectric reservoir: Nam Theun 2 (Laos PDR)
Variability of greenhouse gas (CH <sub>4</sub> and CO <sub>2</sub> ) emissions in a subtropical hydroelectric reservoir: Nam Theun 2 (Laos PDR) Open
Hydroelectric reservoirs, while supporting renewable energy production, contribute notably to greenhouse gas (GHG) emissions in tropical and subtropical regions. This study presents a 14-year (2009–2022) analysis of CH4 and CO4 emissions f…
View article: Impact of wet nitrogen deposition on soil nitrogen emissions in West African ecosystems
Impact of wet nitrogen deposition on soil nitrogen emissions in West African ecosystems Open
Human activities such as fertilization of agricultural lands and human-induced biomass burning strongly impact nitrogen (N) dynamics and losses, with many consequences on the environment. The quantification of N budgets (N inputs and outpu…
View article: Assessment of isoprene and near-surface ozone sensitivities to water stress over the Euro-Mediterranean region
Assessment of isoprene and near-surface ozone sensitivities to water stress over the Euro-Mediterranean region Open
Plants emit biogenic volatile organic compounds (BVOCs) in response to changes in environmental conditions (e.g. temperature, radiation, soil moisture). In the large family of BVOCs, isoprene is by far the strongest emitted compound and pl…
View article: Corrigendum: Diel, seasonal, and inter-annual variation in carbon dioxide effluxes from lakes and reservoirs (2023 Environ. Res. Lett. 18 034046)
Corrigendum: Diel, seasonal, and inter-annual variation in carbon dioxide effluxes from lakes and reservoirs (2023 Environ. Res. Lett. 18 034046) Open
International audience
View article: Diel, seasonal, and inter-annual variation in carbon dioxide effluxes from lakes and reservoirs
Diel, seasonal, and inter-annual variation in carbon dioxide effluxes from lakes and reservoirs Open
Accounting for temporal changes in carbon dioxide (CO 2 ) effluxes from freshwaters remains a challenge for global and regional carbon budgets. Here, we synthesize 171 site-months of flux measurements of CO 2 based on the eddy covariance m…
View article: Nitrogen budget and critical load determination at a Sahelian grazed grassland site
Nitrogen budget and critical load determination at a Sahelian grazed grassland site Open
Based on rare and original in situ measurements together with published data, we estimate a complete nitrogen (N) budget for a semi-arid Sahelian grazed grassland located in Dahra (Senegal) in 2014 and 2017. Nitrogen inputs include biologi…
View article: Diel to interannual variation in carbon dioxide emissions from lakes and reservoirs
Diel to interannual variation in carbon dioxide emissions from lakes and reservoirs Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Geophysical Research Letters. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn mo…
View article: Monitoring soil greenhouse gas (GHG) emissions in a Sahelian agrosilvo-pastoral parkland
Monitoring soil greenhouse gas (GHG) emissions in a Sahelian agrosilvo-pastoral parkland Open
<div> <p>Estimates of greenhouse gas (GHG) emissions from soil are essential to understand possible climate change mitigation from ecosystems. There is currently very limited and reliable information on GHG emission factors for…
View article: New insights into diel to interannual variation in carbon dioxide emissions from lakes and reservoirs
New insights into diel to interannual variation in carbon dioxide emissions from lakes and reservoirs Open
Accounting for temporal changes in carbon dioxide (CO2) emissions from freshwaters remains a challenge for global and regional carbon budgets. Here, we synthesize 171 site-months of eddy covariance flux measurements of CO2 from 13 lakes an…
View article: Understanding N2O Emissions in African Ecosystems: Assessments from a Semi-Arid Savanna Grassland in Senegal and Sub-Tropical Agricultural Fields in Kenya
Understanding N2O Emissions in African Ecosystems: Assessments from a Semi-Arid Savanna Grassland in Senegal and Sub-Tropical Agricultural Fields in Kenya Open
This study is based on the analysis of field-measured nitrous oxide (N2O) emissions from a Sahelian semi-arid grassland site in Senegal (Dahra), tropical humid agricultural plots in Kenya (Mbita region) and simulations using a 1D model des…
View article: Modelling land–atmosphere daily exchanges of NO, NH <sub>3</sub> , and CO <sub>2</sub> in a semi-arid grazed ecosystem in Senegal
Modelling land–atmosphere daily exchanges of NO, NH <sub>3</sub> , and CO <sub>2</sub> in a semi-arid grazed ecosystem in Senegal Open
Three different models (STEP–GENDEC–NOflux, Zhang2010, and Surfatm) are used to simulate NO, CO2, and NH3 fluxes at the daily scale for 2 years (2012–2013) in a semi-arid grazed ecosystem at Dahra (15∘24′10′′ N, 15∘25′56′′ W, Senegal, Sahe…
View article: First Assessment of Inorganic Nitrogen Deposition Budget Following the Impoundment of a Subtropical Hydroelectric Reservoir (Nam Theun 2, Lao PDR)
First Assessment of Inorganic Nitrogen Deposition Budget Following the Impoundment of a Subtropical Hydroelectric Reservoir (Nam Theun 2, Lao PDR) Open
With around 490 km 2 at full level of operation, the Nam Theun 2 Reservoir (NT2R) is one of the largest hydroreservoir in Southeast Asia. This study presents a first estimation of the atmospheric inorganic nitrogen deposition into the NT2R…
View article: Modelling land atmosphere daily exchanges of NO, NH <sub>3</sub> , and CO <sub>2</sub> ina semi-arid grazed ecosystem in Senegal
Modelling land atmosphere daily exchanges of NO, NH <sub>3</sub> , and CO <sub>2</sub> ina semi-arid grazed ecosystem in Senegal Open
Three different models (STEP-GENDEC-NOflux, Zhang2010 and Surfatm) are used to simulate NO, CO2, and NH3 fluxes at the daily scale during two years (2012–2013) in a semi-arid grazed ecosystem at Dahra (15°24′10′′ N, 15°25′56′′ W, Senegal, …
View article: Carbon dioxide emissions from the flat bottom and shallow Nam Theun 2 Reservoir: drawdown area as a neglected pathway to the atmosphere
Carbon dioxide emissions from the flat bottom and shallow Nam Theun 2 Reservoir: drawdown area as a neglected pathway to the atmosphere Open
Freshwater reservoirs are a significant source of CO2 to the atmosphere. CO2 is known to be emitted at the reservoir surface by diffusion at the air–water interface and downstream of dams or powerhouses by degassing and along the river cou…
View article: Identification of spikes associated with local sources in continuous time series of atmospheric CO, CO <sub>2</sub> and CH <sub>4</sub>
Identification of spikes associated with local sources in continuous time series of atmospheric CO, CO <sub>2</sub> and CH <sub>4</sub> Open
This study deals with the problem of identifying atmospheric data influenced by local emissions that can result in spikes in time series of greenhouse gases and long-lived tracer measurements. We considered three spike detection methods kn…
View article: Carbon dioxide emissions from the flat bottom and shallow Nam Theun 2 Reservoir: drawdown area as a neglected pathway to the atmosphere
Carbon dioxide emissions from the flat bottom and shallow Nam Theun 2 Reservoir: drawdown area as a neglected pathway to the atmosphere Open
Freshwater reservoirs are a significant source of CO2 to the atmosphere. CO2 is known to be emitted at the reservoir surface by diffusion at the air-water interface and downstream of dams or powerhouses by degassing and along the river cou…
View article: Identification of spikes associated with local sources in continuous time series of atmospheric CO, CO <sub>2</sub> and CH <sub>4</sub>
Identification of spikes associated with local sources in continuous time series of atmospheric CO, CO <sub>2</sub> and CH <sub>4</sub> Open
This study deals with the problem of identifying atmospheric data that are influenced by local emissions which cause spikes in time series of greenhouse gases and long-lived tracer measurements. We considered three spike detection methods …
View article: Supplementary material to "Identification of spikes associated with local sources in continuous time series of atmospheric CO, CO <sub>2</sub> and CH <sub>4</sub> "
Supplementary material to "Identification of spikes associated with local sources in continuous time series of atmospheric CO, CO <sub>2</sub> and CH <sub>4</sub> " Open
Figure S1: Comparison between manual and automatic flagging (SD method), at Finokalia station.
View article: Effect of sporadic destratification, seasonal overturn, and artificial mixing on CH <sub>4</sub> emissions from a subtropical hydroelectric reservoir
Effect of sporadic destratification, seasonal overturn, and artificial mixing on CH <sub>4</sub> emissions from a subtropical hydroelectric reservoir Open
Inland waters in general and freshwater reservoirs specifically are recognized as a source of CH4 into the atmosphere. Although the diffusion at the air–water interface is the most studied pathway, its spatial and temporal variations are p…
View article: Low methane (CH <sub>4</sub> ) emissions downstream of a monomictic subtropical hydroelectric reservoir (Nam Theun 2, Lao PDR)
Low methane (CH <sub>4</sub> ) emissions downstream of a monomictic subtropical hydroelectric reservoir (Nam Theun 2, Lao PDR) Open
Methane (CH4) emissions from hydroelectric reservoirs could represent a significant fraction of global CH4 emissions from inland waters and wetlands. Although CH4 emissions downstream of hydroelectric reservoirs are known to be potentially…