Greg Roberts
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View article: Turbulent Aerosol Fluxes From Airborne Measurements Over the Arctic Ocean
Turbulent Aerosol Fluxes From Airborne Measurements Over the Arctic Ocean Open
Sea spray aerosol (SSA) emissions are an important source of natural aerosol particles, in particular over the remote Arctic Ocean. However, measurement data on SSA fluxes in the Arctic are sparse, such that these fluxes remain poorly cons…
View article: Characteristics of Ice Nucleating Particles From the Long‐Range Transport of Saharan Dust
Characteristics of Ice Nucleating Particles From the Long‐Range Transport of Saharan Dust Open
Transported mineral dust in a Saharan air layer (SAL) contains active ice‐nucleating particles (INPs) that may be transported across the Atlantic Ocean and subsequently seed clouds in the Caribbean and the Americas. During an aircraft camp…
View article: Investigation of urban park cooling efficiency during summer inParis with drones, sondes, and ground measurements
Investigation of urban park cooling efficiency during summer inParis with drones, sondes, and ground measurements Open
Greening cities is one solution that local authorities are using in order to reduce residents' exposure to heat, which is a major public health issue for urban populations. Urban green spaces, known to be cool spots, are an integral part o…
View article: A comprehensive in situ and remote sensing data set collected during the HALO–(𝒜 𝒞) <sup>3</sup> aircraft campaign
A comprehensive in situ and remote sensing data set collected during the HALO–(𝒜 𝒞) <sup>3</sup> aircraft campaign Open
The HALO–(𝒜𝒞)3 aircraft campaign was carried out in March and April 2022 over the Norwegian and Greenland seas, the Fram Strait, and the central Arctic Ocean. Three research aircraft – the High Altitude and Long Range Research Aircraft (HA…
View article: Overview: quasi-Lagrangian observations of Arctic air mass transformations – introduction and initial results of the HALO–(𝒜 𝒞) <sup>3</sup> aircraft campaign
Overview: quasi-Lagrangian observations of Arctic air mass transformations – introduction and initial results of the HALO–(𝒜 𝒞) <sup>3</sup> aircraft campaign Open
Global warming is amplified in the Arctic. However, numerical models struggle to represent key processes that determine Arctic weather and climate. To collect data that help to constrain the models, the HALO–(𝒜𝒞)3 aircraft campaign was con…
View article: A comprehensive in-situ and remote sensing data set collected during the HALO–(AC) <sup>3</sup> aircraft campaign
A comprehensive in-situ and remote sensing data set collected during the HALO–(AC) <sup>3</sup> aircraft campaign Open
The HALO–(AC)3 aircraft campaign was carried out in March and April 2022 over the Norwegian and Greenland Seas, the Fram Strait, and the central Arctic Ocean. Three research aircraft, the High Altitude and Long Range Research Aircraft (HAL…
View article: Investigation of urban park cooling efficiency during summer in Paris with drones, sondes, and ground measurements
Investigation of urban park cooling efficiency during summer in Paris with drones, sondes, and ground measurements Open
Urban green infrastructures can regulate microclimate and mitigate urban heat island (UHI) effects. In summer, urban parks offer cooler spots where citizens are protected from the heat of the city, more particularly in the evening and the …
View article: Experiment of Sea Breeze Convection, Aerosols, Precipitation, and Environment (ESCAPE)
Experiment of Sea Breeze Convection, Aerosols, Precipitation, and Environment (ESCAPE) Open
Convective clouds play an important role in Earth’s climate system and are a known source of extreme weather. Gaps in our understanding of convective vertical motions, microphysics, and precipitation across a full range of aerosol and mete…
View article: Comment on egusphere-2024-783
Comment on egusphere-2024-783 Open
Abstract. The global warming is amplified in the Arctic. To collect data that help to constrain weather and climate models, which often do not realistically represent the enhanced Arctic warming, the HALO-(AC)³ aircraft campaign was conduc…
View article: Overview: Quasi-Lagrangian observations of Arctic air mass transformations – Introduction and initial results of the HALO–(AC) <sup>3</sup> aircraft campaign
Overview: Quasi-Lagrangian observations of Arctic air mass transformations – Introduction and initial results of the HALO–(AC) <sup>3</sup> aircraft campaign Open
The global warming is amplified in the Arctic. To collect data that help to constrain weather and climate models, which often do not realistically represent the enhanced Arctic warming, the HALO-(AC)³ aircraft campaign was conducted in Mar…
View article: Experimental UAV Flights to Collect Data Within Cumulus Clouds
Experimental UAV Flights to Collect Data Within Cumulus Clouds Open
International audience
View article: 3D-patterned inverse-designed mid-infrared metaoptics
3D-patterned inverse-designed mid-infrared metaoptics Open
Modern imaging systems can be enhanced in efficiency, compactness, and application through the introduction of multilayer nanopatterned structures for manipulation of light based on its fundamental properties. High transmission multispectr…
View article: Important Ice Processes Are Missed by the Community Earth System Model in Southern Ocean Mixed‐Phase Clouds: Bridging SOCRATES Observations to Model Developments
Important Ice Processes Are Missed by the Community Earth System Model in Southern Ocean Mixed‐Phase Clouds: Bridging SOCRATES Observations to Model Developments Open
Global climate models (GCMs) are challenged by difficulties in simulating cloud phase and cloud radiative effect over the Southern Ocean (SO). Some of the new‐generation GCMs predict too much liquid and too little ice in mixed‐phase clouds…
View article: Quantifying the mixing of trade‐wind cumulus during the NEPHELAE‐EUREC4A field campaign with remotely piloted aircraft
Quantifying the mixing of trade‐wind cumulus during the NEPHELAE‐EUREC4A field campaign with remotely piloted aircraft Open
During the Network for studying Entrainment and microPHysics of cLouds using Adaptive Exploration (NEPHELAE)–ElUcidating the RolE of Cloud–Circulation Coupling in ClimAte (EUREC4A) field campaign in January and February 2020 in Barbados, r…
View article: Multi-dimensional wavefront sensing using volumetric meta-optics
Multi-dimensional wavefront sensing using volumetric meta-optics Open
The ideal imaging system would efficiently capture information about all fundamental properties light: intensity, direction, wavelength, and polarization. Most common imaging systems only map the spatial degrees of freedom of light onto a …
View article: 3D-Patterned Inverse-Designed Mid-Infrared Metaoptics
3D-Patterned Inverse-Designed Mid-Infrared Metaoptics Open
Modern imaging systems can be enhanced in efficiency, compactness, and application through introduction of multilayer nanopatterned structures for manipulation of light based on its fundamental properties. High transmission efficiency mult…
View article: Use of large-eddy simulations to design an adaptive sampling strategy to assess cumulus cloud heterogeneities by remotely piloted aircraft
Use of large-eddy simulations to design an adaptive sampling strategy to assess cumulus cloud heterogeneities by remotely piloted aircraft Open
Trade wind cumulus clouds have a significant impact on the Earth's radiative balance due to their ubiquitous presence and significant coverage in subtropical regions. Many numerical studies and field campaigns have focused on better unders…
View article: Field report: Deployment of a fleet of drones for cloud exploration
Field report: Deployment of a fleet of drones for cloud exploration Open
Drones are commonly used for civil applications and are accessible to those with limited piloting skills in several scenarios. However, the deployment of a fleet in the context of scientific research can lead to complex situations that req…
View article: EUREC <sup>4</sup> A
EUREC <sup>4</sup> A Open
The science guiding the EUREC4A campaign and its measurements is presented. EUREC4A comprised roughly 5 weeks of measurements in the downstream winter trades of the North Atlantic – eastward and southeastward of Barbados. Through its abili…
View article: Constraining continuous topology optimizations to discrete solutions for photonic applications
Constraining continuous topology optimizations to discrete solutions for photonic applications Open
Photonic topology optimization is a technique used to find the electric permittivity distribution of a device that optimizes an electromagnetic figure-of-merit. Two common techniques are used: continuous density-based optimizations that op…
View article: The Status and Future of Small Uncrewed Aircraft Systems (UAS) in Operational Meteorology
The Status and Future of Small Uncrewed Aircraft Systems (UAS) in Operational Meteorology Open
The boundary layer plays a critical role in regulating energy and moisture exchange between the surface and the free atmosphere. However, the boundary layer and lower atmosphere (including shallow flow features and horizontal gradients tha…
View article: Impact of Tropical Cyclones on Inhabited Areas of the SWIO Basin at Present and Future Horizons. Part 2: Modeling Component of the Research Program RENOVRISK-CYCLONE
Impact of Tropical Cyclones on Inhabited Areas of the SWIO Basin at Present and Future Horizons. Part 2: Modeling Component of the Research Program RENOVRISK-CYCLONE Open
The ReNovRisk-Cyclone program aimed at developing an observation network in the south-west Indian ocean (SWIO) in close synergy with the implementation of numerical tools to model and analyze the impacts of tropical cyclones (TC) in the pr…
View article: Hospital admission as a deprescribing triage point for patients discharged to Residential Aged Care Facilities
Hospital admission as a deprescribing triage point for patients discharged to Residential Aged Care Facilities Open
Background Deprescribing may benefit older frail patients experiencing polypharmacy. We investigated the scope for deprescribing in acutely hospitalised patients and the long-term implications of continuation of medications that could pote…
View article: Impact of Tropical Cyclones on Inhabited Areas of the SWIO Basin at Present and Future Horizons. Part 1: Overview and Observing Component of the Research Project RENOVRISK-CYCLONE
Impact of Tropical Cyclones on Inhabited Areas of the SWIO Basin at Present and Future Horizons. Part 1: Overview and Observing Component of the Research Project RENOVRISK-CYCLONE Open
The international research program “ReNovRisk-CYCLONE” (RNR-CYC, 2017–2021) directly involves 20 partners from 5 countries of the south-west Indian-Ocean. It aims at improving the observation and modelling of tropical cyclones in the south…
View article: Comment on amt-2021-20
Comment on amt-2021-20 Open
Abstract. Trade wind cumulus clouds have a significant impact on the Earth's radiative balance due to their ubiquitous presence and significant coverage in subtropical regions. Many numerical studies and field campaigns have focused on bet…