A5078531460- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Atmospheric chemistry and aerosols
- Meteorological Phenomena and Simulations
- Advanced Chemical Physics Studies
- Ocean Waves and Remote Sensing
- Atmospheric Ozone and Climate
- Spectroscopy and Quantum Chemical Studies
- Air Quality and Health Impacts
- Microplastics and Plastic Pollution
- Quantum, superfluid, helium dynamics
- Marine and fisheries research
- Flood Risk Assessment and Management
- Atmospheric aerosols and clouds
- Recycling and Waste Management Techniques
- Vehicle emissions and performance
- Hydrology and Watershed Management Studies
- Precipitation Measurement and Analysis
- Mercury impact and mitigation studies
- Hydrology and Drought Analysis
- Tropical and Extratropical Cyclones Research
- Oil Spill Detection and Mitigation
- Geology and Paleoclimatology Research
- Coral and Marine Ecosystems Studies
- Marine and coastal plant biology
Jerusalem College of Technology
2015-2024
Hebrew University of Jerusalem
1996-2019
Ben-Gurion University of the Negev
2019
Rutgers, The State University of New Jersey
2016
Weizmann Institute of Science
2014-2016
University of California, Irvine
1997-2005
Visual ship transect surveys provide crucial information about the density, and spatial distribution of floating anthropogenic litter in a basin. However, such observations 'snapshot' local conditions at given time cannot be used to deduce provenance or predict its fate, for management mitigation policies. Particle tracking techniques have seen extensive use these roles, however, most previous studies simplistic initial based on bulk average inputs debris system. Here, macro Adriatic Sea are...
Abstract. The effects of absorbing aerosols on the atmospheric radiation budget and dynamics over eastern Mediterranean region are studied using satellites ground-based observations, radiative transfer model calculations, under summer conditions. Climatology aerosol optical depth (AOD), single scattering albedo (SSA) size parameters were analyzed multi-year (1999–2012) observations from Moderate Resolution Imaging Spectroradiometer (MODIS), Multi-angle SpectroRadiometer (MISR) AErosol...
Abstract In Part I of this work a 3‐D cloud tracking algorithm and phase space center gravity altitude versus liquid water mass (CvM space) were introduced described in detail. We showed how new physical insight can be gained by following trajectories the CvM space. Here approach is used to investigate aerosol effects on fields warm cumuli. show clear effect loading shape size clusters. also find fundamental differences between simulations using bin bulk microphysical schemes, with scheme...
Tropospheric ozone (O3) is a major air pollutant that negatively affects human health and vegetation, while also playing central role in atmospheric chemistry climate change. Dry deposition, process by which gases are deposited on surface turbulence gravity, accounts for about 20–25% of tropospheric O3 removal. However, the mechanisms controlling O₃ dry-deposition velocity (Vd,O₃) urban areas poorly understood, largely due to scarcity measurements such...
Abstract Ocean submesoscale (∼2–20 km) mixing processes play a major role in ocean dynamics, physical–biological interactions (e.g., the dispersion of larvae), and pollutants. In this paper, horizontal on scale few kilometers is investigated, from observations surface currents, using highly resolved (300 m) high-frequency radar. These results show complexity scales existence temporary barriers to that can affect biological materials are narrow [O(100 m)] survive for days. The these supported...
Abstract We study the evolution of warm convective cloud fields using large eddy simulations continental and trade cumulus. Individual clouds are tracked a posteriori from formation to dissipation 3‐D cloud‐tracking algorithm, results presented in phase space center gravity altitude versus liquid water mass (CvM space). The CvM is shown contain rich information on field characteristics, morphology, common development pathways, together facilitating comprehensive understanding field. In this...
Abstract High-frequency radar (HFR) surface current data are an increasingly utilized tool for capturing complex dynamics of coastal ocean systems worldwide. The is uniquely capable sampling relevant temporal and spatial scales nearshore processes that impact event response activities basic research. HFR a shore-based remote sensing system therefore subject to gaps, which predominately due environmental effects, like increased external noise or low signal conditions. Many applications these...
Abstract. Understanding and estimating the distribution transport of microplastics in marine environments has been recognized as a major global research issue. Most existing on modelling focused low-density particles floating surface waters, using 2-D Lagrangian approach ignoring vertical displacement particles. In this work, we evaluate to what extent movement within waters by mixing processes may affect horizontal fate microplastics. The aim is determine whether sufficient for accurate...
Lagrangian particle tracking and coherent structures (LCS) analysis tools aid in the studies of fluid flow are especially helpful understanding role transport marine ecosystems. However, most existing operate conjunction with a specific model and/or require execution multiple programming languages. The Particle Tracking Analysis TOolbox (PaTATO) for Matlab aims to increase availability techniques wider audience. PaTATO is compatible many different types velocity data can compute forward...
Abstract. A primary sink of air pollutants and their precursors is dry deposition. Dry deposition estimates differ across chemical transport models, yet an understanding the model spread incomplete. Here, we introduce Activity 2 Air Quality Model Evaluation International Initiative Phase 4 (AQMEII4). We examine 18 schemes from regional global models as well standalone used for impact assessments or process understanding. configure single-point at eight Northern Hemisphere locations with...
Abstract. Understanding the role of ocean currents in recruitment commercially and ecologically important fish is an step toward developing sustainable resource management guidelines. To this end, we attempt to elucidate surface transport supplying recruits European sardine (Sardina pilchardus) Gulf Manfredonia, a known area Adriatic Sea. Sardine early life history stages (ELHSs) were collected during two cruises provide observational estimates their age–size relationship passive pelagic...
Abstract Discovering the predictors of foraging locations can be challenging, and is often critical missing piece for interpreting ecological significance observed movement patterns predators. This especially true in dynamic coastal marine systems, where planktonic food resources are diffuse must either physically or biologically concentrated to support upper trophic levels. In Western Antarctic Peninsula, recent climate change has created new sympatry between Adélie ( Pygoscelis adeliae )...
Abstract Sea breezes occur nearly daily in the U.S. Mid‐Atlantic summer during high electricity demand periods, and thus have important implications for burgeoning offshore wind energy industry. The sea breeze's component is poorly understood ill defined relative to its onshore counterpart. Here a new Lagrangian method not yet readily used study breeze, dispersion, was validated applied Weather Research Forecasting model Mid‐Atlantic. This characterize convergent divergent breeze extents...
Palmer Deep canyon along the central West Antarctic Peninsula is known to have higher phytoplankton biomass than surrounding non-canyon regions, but circulation mechanisms that transport and locally concentrate krill, potentially increasing prey availability upper-trophic-level predators such as penguins cetaceans, are currently unknown. We deployed a three-site high-frequency radar network provided hourly surface maps over hotspot. A series of particle release experiments were used estimate...
A new kind of Lagrangian diagnostic family is proposed and a specific form it suggested for characterizing mixing: the maximal extent trajectory (MET). It enables detection coherent structures their dynamics in two- (and potentially three-) dimensional unsteady flows both bounded open domains. Its computation much easier than all other diagnostics known to us provides insights regarding mixing properties on short long time scales spatial plots distribution diagrams. We demonstrate its...
Quantum calculations are reported for vibrational states and energy levels of several peptide peptide−water complexes, to provide insight into the spectroscopic properties such systems their dependency on presently available anharmonic force fields. A blocked di-l-serine−H2O complex trialanine in an antiparallel β sheet configuration main treated. The variants Amber field use self-consistent (VSCF) method, which includes effects anharmonicity as well interactions between modes. findings...