Ewan O’Connor
YOU?
Author Swipe
View article: PALM-SLUrb v24.04: a single-layer urban canopy model for the PALM model system – model description and first evaluation
PALM-SLUrb v24.04: a single-layer urban canopy model for the PALM model system – model description and first evaluation Open
Urban areas are recognised as critical zones for climate research due to the high number of people living in these areas and their significant impacts on local and regional climates. However, understanding urban boundary layer processes re…
View article: Remote sensing measurements during PaCE 2022 campaign
Remote sensing measurements during PaCE 2022 campaign Open
Continuous ground-based remote sensing measurements were conducted during the Pallas Cloud Experiment (PaCE) 2022 campaign. Remote sensing instruments, including two ceilometers (models CL31 and CL61, Vaisala Oyj), a Doppler cloud radar (m…
View article: Validating satellite observations of clouds with the ground-based ACTRIS cloud profiling network
Validating satellite observations of clouds with the ground-based ACTRIS cloud profiling network Open
The number of ground-based cloud profiling stations incorporating a cloud radar, ceilometer and multi-channel microwave radiometer have rapidly increased in recent years, with more than 20 stations now operating within the ACTRIS cloud pro…
View article: Variations in urban boundary layer height at regional and European scales from lidar network observations
Variations in urban boundary layer height at regional and European scales from lidar network observations Open
The dynamics of the Atmospheric Boundary Layer (ABL) play a crucial role for the transport of heat, moisture, and pollutants within urban environments. In this study, we use long-term observations from ground-based remote sensing to examin…
View article: Observations of tall-building wakes using a scanning Doppler lidar
Observations of tall-building wakes using a scanning Doppler lidar Open
High-rise buildings, increasingly a feature of many large cities, impact local atmospheric flow conditions. Tall-building wakes affect air quality downstream due to turbulent mixing and require parameterisation in dispersion models. Previo…
View article: Remote sensing measurements during PaCE 2022 campaign
Remote sensing measurements during PaCE 2022 campaign Open
Continuous ground-based remote sensing measurements were conducted during the Pallas Cloud Experiment (PaCE) 2022 campaign. Remote sensing instruments, including two ceilometers (models CL31 and CL61, Vaisala Oyj), a Doppler cloud radar (m…
View article: PALM-SLUrb v24.04: A single-layer urban canopy model for the PALM model system – Model description and first evaluation
PALM-SLUrb v24.04: A single-layer urban canopy model for the PALM model system – Model description and first evaluation Open
Urban areas are recognized as critical zones for climate research due to the high number of people living in these areas and their significant impacts on local and regional climates. However, understanding urban boundary layer processes re…
View article: Accelerating research through community open source software for a standardized file format to improve process representation in numerical weather prediction models
Accelerating research through community open source software for a standardized file format to improve process representation in numerical weather prediction models Open
Improvements in process representation in numerical weather prediction (NWP) models requires informed collaboration between scientists making research-grade observations and scientist developing state-of-the-art NWP models. As a result, pr…
View article: How horizontal transport and turbulent mixing impact aerosol particle and precursor concentrations at a background site in the UAE
How horizontal transport and turbulent mixing impact aerosol particle and precursor concentrations at a background site in the UAE Open
The optical, physical, and chemical properties of aerosol particles have been previously studied in the United Arab Emirates (UAE), but there is still a gap in the knowledge of particle sources and in the horizontal and vertical transport …
View article: The Year of Polar Prediction site Model Intercomparison Project (YOPPsiteMIP) phase 1: project overview and Arctic winter forecast evaluation
The Year of Polar Prediction site Model Intercomparison Project (YOPPsiteMIP) phase 1: project overview and Arctic winter forecast evaluation Open
Although the quality of weather forecasts in the polar regions is improving, forecast skill there still lags behind lower latitudes. So far there have been relatively few efforts to evaluate processes in numerical weather prediction system…
View article: Merged Observatory Data Files (MODFs): an integrated observational data product supporting process-oriented investigations and diagnostics
Merged Observatory Data Files (MODFs): an integrated observational data product supporting process-oriented investigations and diagnostics Open
A large and ever-growing body of geophysical information is measured in campaigns and at specialized observatories as a part of scientific expeditions and experiments. These collections of observed data include many essential climate varia…
View article: Enhancing Finland's ceilometer network
Enhancing Finland's ceilometer network Open
The Finnish Meteorological Institute (FMI) ceilometer network now has about 45 ceilometer stations across Finland that report the full vertical profile of attenuated backscatter profiles, which are processed and displayed in real time on a…
View article: Relationship between Doppler wind lidar observed wind speed and Carrier-to-Noise ratio
Relationship between Doppler wind lidar observed wind speed and Carrier-to-Noise ratio Open
We investigate the relationship between the CNR and the mean horizontal wind speed estimated by a Doppler lidar. Intuitively, high values of CNR represent high concentration of particles that backscatter the light beam and therefore denote…
View article: Special Observing Period (SOP) data for the Year of Polar Prediction site Model Intercomparison Project (YOPPsiteMIP)
Special Observing Period (SOP) data for the Year of Polar Prediction site Model Intercomparison Project (YOPPsiteMIP) Open
The rapid changes occurring in the polar regions require an improved understanding of the processes that are driving these changes. At the same time, increased human activities such as marine navigation, resource exploitation, aviation, co…
View article: Aerosol, Clouds and Trace Gases Research Infrastructure (ACTRIS): The European Research Infrastructure Supporting Atmospheric Science
Aerosol, Clouds and Trace Gases Research Infrastructure (ACTRIS): The European Research Infrastructure Supporting Atmospheric Science Open
The Aerosol, Clouds and Trace Gases Research Infrastructure (ACTRIS) officially became the 33rd European Research Infrastructure Consortium (ERIC) on 25 April 2023 with the support of 17 founding member and observer countries. As a pan-Eur…
View article: Comment on egusphere-2024-937
Comment on egusphere-2024-937 Open
Abstract. High-rise buildings, increasingly a feature of many large cities, impact local atmospheric flow conditions. Tall building wakes affect air quality downstream due to turbulent mixing and require parametrization in…
View article: Observations of Tall-Building Wakes Using a Scanning Doppler Lidar
Observations of Tall-Building Wakes Using a Scanning Doppler Lidar Open
High-rise buildings, increasingly a feature of many large cities, impact local atmospheric flow conditions. Tall building wakes affect air quality downstream due to turbulent mixing and require parametrization in dispersion models. Previou…
View article: Cloudnet – an ACTRIS data repository for cloud remote sensing observations
Cloudnet – an ACTRIS data repository for cloud remote sensing observations Open
Clouds strongly regulate the Earth’s water cycle and the planetary radiation balance. Clouds are one of the largest contributors to the overall uncertainty in climate feedbacks, propagating into global temperature projections (Arias …
View article: Long-term aerosol particle depolarization ratio measurements with HALO Photonics Doppler lidar
Long-term aerosol particle depolarization ratio measurements with HALO Photonics Doppler lidar Open
It has been demonstrated that HALO Photonics Doppler lidars (denoted HALO Doppler lidar hereafter) have the capability for retrieving the aerosol particle depolarization ratio at a wavelength of 1565 nm. For these lidars operating at such …
View article: Comment on egusphere-2023-1951
Comment on egusphere-2023-1951 Open
Abstract. Although the quality of weather forecasts in the polar regions is improving, forecast skill there still lags the lower latitudes. So far there have been relatively few efforts to evaluate processes in Numerical W…
View article: Special Observing Period (SOP) Data for the Year of Polar Prediction site Model Intercomparison Project (YOPPsiteMIP)
Special Observing Period (SOP) Data for the Year of Polar Prediction site Model Intercomparison Project (YOPPsiteMIP) Open
The rapid changes occurring in the polar regions require an improved understanding of the processes that are driving the changes. At the same time increased human activities, such as marine navigation, resource exploitation, aviation, comm…
View article: The YOPP site Model Intercomparison Project (YOPPsiteMIP) phase 1: project overview and Arctic winter forecast evaluation
The YOPP site Model Intercomparison Project (YOPPsiteMIP) phase 1: project overview and Arctic winter forecast evaluation Open
Although the quality of weather forecasts in the polar regions is improving, forecast skill there still lags the lower latitudes. So far there have been relatively few efforts to evaluate processes in Numerical Weather Prediction systems u…
View article: Merged Observatory Data Files (MODFs): An Integrated Observational Data Product Supporting Process-Oriented Investigations and Diagnostics
Merged Observatory Data Files (MODFs): An Integrated Observational Data Product Supporting Process-Oriented Investigations and Diagnostics Open
A large and ever-growing body of geophysical information is measured on campaigns and at specialized observatories as a part of scientific expeditions/experiments. These collections of observed data include many essential climate variables…
View article: Spectral dependence of birch and pine pollen optical properties using a synergy of lidar instruments
Spectral dependence of birch and pine pollen optical properties using a synergy of lidar instruments Open
Active remote sensors equipped with the capability to detect polarization, a shape-relevant parameter, are essential to aerosol particle identification in the vertical domain. Most commonly, the linear particle depolarization ratio has bee…
View article: ENVRI-FAIR D8.13: Atmospheric subdomain FAIRness assessment report
ENVRI-FAIR D8.13: Atmospheric subdomain FAIRness assessment report Open
This report presents the implementation of the FAIR principles across the atmospheric subdomain over the ENVRI-FAIR project period. The report starts with the introduction and background for the baseline for the FAIR implementation of the …
View article: Utö Observatory for Analysing Atmospheric Ducting Events over Baltic Coastal and Marine Waters
Utö Observatory for Analysing Atmospheric Ducting Events over Baltic Coastal and Marine Waters Open
Maritime safety relies on navigation, detection, and radio communication technologies that function through electromagnetic radiation. Propagation of electromagnetic radiation can be impacted by a disruptive phenomenon known as ducting. Ou…
View article: Comment on amt-2023-37
Comment on amt-2023-37 Open
Abstract. It has been demonstrated that Halo Doppler lidars have the capability for retrieving the aerosol particle linear depolarization ratio at a wavelength of 1565 nm. However, the retrieval depends on an accurate repr…
View article: Evaluating Arctic clouds modelled with the Unified Model and Integrated Forecasting System
Evaluating Arctic clouds modelled with the Unified Model and Integrated Forecasting System Open
By synthesising remote-sensing measurements made in the central Arctic into a model-gridded Cloudnet cloud product, we evaluate how well the Met Office Unified Model (UM) and the European Centre for Medium-Range Weather Forecasting (ECMWF)…
View article: Evaluating wind profiles in a numerical weather prediction model with Doppler lidar
Evaluating wind profiles in a numerical weather prediction model with Doppler lidar Open
We use Doppler lidar wind profiles from six locations around the globe to evaluate the wind profile forecasts in the boundary layer generated by the operational global Integrated Forecast System (IFS) from the European Centre for Medium-ra…
View article: Comment on egusphere-2023-507 'Spectral dependence of birch and pine pollen optical properties using a synergy of lidar instruments'
Comment on egusphere-2023-507 'Spectral dependence of birch and pine pollen optical properties using a synergy of lidar instruments' Open
Abstract. Active remote sensors equipped with the capability to detect polarization, a shape relevant parameter, are essential to aerosol particle identification in the vertical domain. Most commonly, the linear particle d…