Erick Fredj
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View article: Attractive Lagrangian Features in the Mid‐Atlantic Bight: Using Lagrangian Coherent Structures to Describe Seasonal and Interannual Changes in Circulation
Attractive Lagrangian Features in the Mid‐Atlantic Bight: Using Lagrangian Coherent Structures to Describe Seasonal and Interannual Changes in Circulation Open
Coastal ocean dynamics are complex with influences from freshwater input, alongshore flows, offshore slope water intrusions, and overlapping mixing and stratification processes. This complexity makes it difficult to elucidate patterns in o…
View article: The effect of meteorological conditions during drought on BVOC mixing ratios over an Eastern Mediterranean Forest
The effect of meteorological conditions during drought on BVOC mixing ratios over an Eastern Mediterranean Forest Open
Biogenic volatile organic compounds (BVOCs) influence photochemical air pollution and climate change, with emissions strongly affected by meteorological conditions. However, the impact of drought on BVOC emissions remains poorly characteri…
View article: Ozone dry deposition and chemical removal in the urban environment of Beijing: I. Chemical and meteorological controlling parameters
Ozone dry deposition and chemical removal in the urban environment of Beijing: I. Chemical and meteorological controlling parameters Open
Tropospheric ozone (O3) is a major air pollutant that negatively affects human health and vegetation, and plays a central role in climate change and atmospheric chemistry. Current simulations of tropospheric O3 concentrations in climate an…
View article: Ozone dry deposition through plant stomata: multi-model comparison with flux observations and the role of water stress as part of AQMEII4 Activity 2
Ozone dry deposition through plant stomata: multi-model comparison with flux observations and the role of water stress as part of AQMEII4 Activity 2 Open
A substantial portion of tropospheric O3 dry deposition occurs after diffusion of O3 through plant stomata. Simulating stomatal uptake of O3 in 3D atmospheric chemistry models is important in the face of increasing drought-induced declines…
View article: Ozone Formation and Dry Deposition in Urban Environments: Insights from WRF-Chem Modeling and Eddy Covariance Flux Measurements in Beijing
Ozone Formation and Dry Deposition in Urban Environments: Insights from WRF-Chem Modeling and Eddy Covariance Flux Measurements in Beijing Open
Tropospheric ozone (O3) is a major air pollutant that negatively affects human health and vegetation, while also playing a central role in atmospheric chemistry and climate change. Dry deposition, a process by which gases are deposited on …
View article: Lagrangian coherent structures influence the spatial structure of marine food webs
Lagrangian coherent structures influence the spatial structure of marine food webs Open
The patchy distribution of prey in marine environments has a large effect on upper trophic level foraging strategies and distributions. While currents can disperse or concentrate low-motility plankton into patches that reflect the dynamic …
View article: Ozone dry deposition through plant stomata: Multi-model comparison with flux observations and the role of water stress as part of AQMEII4 Activity 2
Ozone dry deposition through plant stomata: Multi-model comparison with flux observations and the role of water stress as part of AQMEII4 Activity 2 Open
A substantial portion of tropospheric O3 dry deposition occurs after diffusion of O3 through plant stomata. Simulating stomatal uptake of O3 in 3D atmospheric chemistry models is important in the face of increasing drought induced declines…
View article: Comment on egusphere-2024-717
Comment on egusphere-2024-717 Open
Abstract. Biogenic volatile organic compounds (BVOCs) exert a significant influence on photochemical air pollution and climate change, with their emissions strongly affected by meteorological conditions. However, the effect of drought on B…
View article: Proposed network of Marine Protected Areas supports larval dispersal and connectivity in the Eastern Mediterranean
Proposed network of Marine Protected Areas supports larval dispersal and connectivity in the Eastern Mediterranean Open
The marine environment of the Eastern Mediterranean is under growing threat due to natural and anthropogenic stressors. Networks of Marine Protected Areas (MPAs) are effective tools in protecting marine environments and conserving their bi…
View article: Instantaneous intraday changes in key meteorological parameters as a proxy for the mixing ratio of BVOCs over vegetation under drought conditions
Instantaneous intraday changes in key meteorological parameters as a proxy for the mixing ratio of BVOCs over vegetation under drought conditions Open
Biogenic volatile organic compounds (BVOCs) exert a significant influence on photochemical air pollution and climate change, with their emissions strongly affected by meteorological conditions. However, the effect of drought on BVOC emissi…
View article: Quantifying the role of submesoscale Lagrangian transport features in the concentration of phytoplankton in a coastal system
Quantifying the role of submesoscale Lagrangian transport features in the concentration of phytoplankton in a coastal system Open
Food resources in the ocean are often found in low densities, and need to be concentrated for efficient consumption. This is done in part by oceanographic features transporting and locally concentrating plankton, creating a highly patchy r…
View article: A single-point modeling approach for the intercomparison and evaluation of ozone dry deposition across chemical transport models (Activity 2 of AQMEII4)
A single-point modeling approach for the intercomparison and evaluation of ozone dry deposition across chemical transport models (Activity 2 of AQMEII4) Open
A primary sink of air pollutants and their precursors is dry deposition. Dry deposition estimates differ across chemical transport models, yet an understanding of the model spread is incomplete. Here, we introduce Activity 2 of the Air Qua…
View article: Comment on egusphere-2023-465
Comment on egusphere-2023-465 Open
Abstract. A primary sink of air pollutants and their precursors is dry deposition. Dry deposition estimates differ across chemical transport models yet an understanding of the model spread is incomplete. Here we introduce Activity 2 of the…
View article: Inter‐Annual Variability in Phytoplankton and Nutrients in the Gulf of Elat/Aqaba
Inter‐Annual Variability in Phytoplankton and Nutrients in the Gulf of Elat/Aqaba Open
The Gulf of Elat/Aqaba exhibits high inter‐annual variability in mixed layer depth. Observations from the northern Gulf show differences of hundreds of meters in winter mixing depth, which ranges between 300 m in years with shallow mixing …
View article: accelerating wrf i/o performance with adios2 and network-based streaming
accelerating wrf i/o performance with adios2 and network-based streaming Open
With the approach of Exascale computing power for large-scale High Performance Computing (HPC) clusters, the gap between compute capabilities and storage systems is growing larger. This is particularly problematic for the Weather Research …
View article: A single-point modeling approach for the intercomparison and evaluation of ozone dry deposition across chemical transport models (Activity 2 of AQMEII4)
A single-point modeling approach for the intercomparison and evaluation of ozone dry deposition across chemical transport models (Activity 2 of AQMEII4) Open
A primary sink of air pollutants and their precursors is dry deposition. Dry deposition estimates differ across chemical transport models yet an understanding of the model spread is incomplete. Here we introduce Activity 2 of the Air Quali…
View article: The 50- and 100-year Exceedance Probabilities as New and Convenient Statistics for a Frequency Analysis of Extreme Events: An Example of Extreme Precipitation in Israel
The 50- and 100-year Exceedance Probabilities as New and Convenient Statistics for a Frequency Analysis of Extreme Events: An Example of Extreme Precipitation in Israel Open
The misinterpreted statistics of extreme events’ probability in drainage design codes can lead to an insufficient capacity of drainage systems. This is one of the main factors of frequent floods, especially in coastal cities. Heavy rainfal…
View article: Inter-annual variability in phytoplankton and nutrients in the Gulf of Elat/Aqaba
Inter-annual variability in phytoplankton and nutrients in the Gulf of Elat/Aqaba Open
The Gulf of Elat/Aqaba exhibits high inter-annual variability in mixed layer depth. Observations from the northern Gulf show differences of hundreds of meters in winter mixing depth, which ranges between 300 m in years with shallow mixing …
View article: Sediment Resuspension as a Major Contributor to Sinking Particles in the Northwestern South China Sea: Evidence From Observations and Modeling
Sediment Resuspension as a Major Contributor to Sinking Particles in the Northwestern South China Sea: Evidence From Observations and Modeling Open
The lateral advection of sinking particles is a well-known phenomenon in the South China Sea (SCS) and has a significant impact on the estimation of the efficiency of the biological carbon pump. However, little is known about the sources a…
View article: High Performance Parallel I/O and In-Situ Analysis in the WRF Model with ADIOS2
High Performance Parallel I/O and In-Situ Analysis in the WRF Model with ADIOS2 Open
As the computing power of large-scale HPC clusters approaches the Exascale, the gap between compute capabilities and storage systems is ever widening. In particular, the popular High Performance Computing (HPC) application, the Weather Res…
View article: Improved Gridded Precipitation Data Derived from Microwave Link Attenuation
Improved Gridded Precipitation Data Derived from Microwave Link Attenuation Open
The motivation for improving gridded precipitation data lies in weather now-casting and flood forecasting. Therefore, over the past decade, Commercial Microwave Link (CML) attenuation data have been used to determine rain rates between mic…
View article: Impact of mesoscale eddies on the source funnel of sediment trap measurements in the South China Sea
Impact of mesoscale eddies on the source funnel of sediment trap measurements in the South China Sea Open
The mooring tethered time-series sediment traps (TS-traps) collect sinking particles in the ocean, enabling the estimation of biological pump (BP) efficiency based on the assumption of vertical settling. However, the advection of sea water…
View article: Emission of biogenic volatile organic compounds from warm and oligotrophic seawater in the Eastern Mediterranean
Emission of biogenic volatile organic compounds from warm and oligotrophic seawater in the Eastern Mediterranean Open
Biogenic volatile organic compounds (BVOCs) from terrestrial vegetation and marine organisms contribute to photochemical pollution and affect the radiation budget, cloud properties and precipitation via secondary organic aerosol formation.…
View article: 3D reconstruction of ocean velocity from high-frequency radar and acoustic Doppler current profiler: a model-based assessment study
3D reconstruction of ocean velocity from high-frequency radar and acoustic Doppler current profiler: a model-based assessment study Open
The effective monitoring and understanding of the dynamics of coastal currents is crucial for the development of environmentally sustainable coastal activities in order to preserve marine ecosystems as well as to support marine and navigat…
View article: Is oxidation of atmospheric mercury controlled by different mechanisms in the polluted continental boundary layer vs. remote marine boundary layer?
Is oxidation of atmospheric mercury controlled by different mechanisms in the polluted continental boundary layer vs. remote marine boundary layer? Open
Deposition of atmospheric mercury is of global concern, primarily due to health effects associated with efficient bioaccumulation of mercury in marine food webs. Although oxidation of gaseous elementary mercury (GEM), the major fraction of…