Ronny Petrik
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View article: Strategies for Statistical‐Dynamical Downscaling to Urban Climate Using Global Data
Strategies for Statistical‐Dynamical Downscaling to Urban Climate Using Global Data Open
Statistical‐dynamical downscaling is one method to model urban climate using global and regional climate model (GCM and RCM) results. In this study, different strategies for statistical‐dynamical downscaling are derived and evaluated. For …
View article: Future Ship Emission Scenarios with a Focus on Ammonia Fuel
Future Ship Emission Scenarios with a Focus on Ammonia Fuel Open
Current efforts by the International Maritime Organization (IMO) to decarbonize the shipping sector have gained momentum, although the exact path to achieve this goal is currently unclear. However, it can be safely assumed that alternative…
View article: Towards transient aerosols in ICON-CLM - Impact of different aerosol climatologies
Towards transient aerosols in ICON-CLM - Impact of different aerosol climatologies Open
<p><span>Within the framework of the project NUKLEUS (Actionable local climate information for Germany) first long-term simulations with COSMO 6.0 and ICON-CLM based on the latest release ICON NWP 2.6.4 have been performed. The…
View article: The COPAT2 initiative of the CLM-Community: towards a recommended configuration of COSMO-CLM and ICON-CLM new model versions
The COPAT2 initiative of the CLM-Community: towards a recommended configuration of COSMO-CLM and ICON-CLM new model versions Open
<p>The structural uncertainty of a climate model is defined as the range of outcomes that can be obtained through different representations of physical processes of the climate system, the selection of different unconstrained paramet…
View article: Model study on the influence of aerosol-cloud interaction processes on precipitation in urban areas
Model study on the influence of aerosol-cloud interaction processes on precipitation in urban areas Open
<p>Urban influence on cloud and precipitation processes can appear via two mechanisms: (I) roughness and thermal effects induced by the urban morphology influence dynamical processes and (II) high urban particle emissions effect clou…
View article: Comparison of the Impact of Ship Emissions in Northern Europe and Eastern China
Comparison of the Impact of Ship Emissions in Northern Europe and Eastern China Open
It is well known that ship emissions contribute significantly to atmospheric pollution. However, the impact on air quality can regionally vary, as influenced by parameters such as the composition of the regional shipping fleet, state of ba…
View article: The underestimation of Cov19 lockdown effects in modeling urban population exposure to air pollution
The underestimation of Cov19 lockdown effects in modeling urban population exposure to air pollution Open
<p><strong>Summary</strong></p><p>This study aims to quantify the combined effect of changing emissions and population activity in the estimation of urban population during the first COVID19-lockdown measures …
View article: A ship emission modeling system with scenario capabilities
A ship emission modeling system with scenario capabilities Open
A bottom-up modular ship emission modeling system (MoSES) is presented that calculates highly spatiotemporally resolved ship exhaust emissions, based on ship position data recorded from the automatic identification system. MoSES is built i…
View article: The role of emission reductions and the meteorological situation for air quality improvements during the COVID-19 lockdown period in central Europe
The role of emission reductions and the meteorological situation for air quality improvements during the COVID-19 lockdown period in central Europe Open
The lockdown measures taken to prevent a rapid spreading of the coronavirus in Europe in spring 2020 led to large emission reductions, particularly in road traffic and aviation. Atmospheric concentrations of NO2 and PM2.5 were mostly reduc…
View article: Comment on acp-2021-372
Comment on acp-2021-372 Open
Abstract. The lockdown measures taken to prevent a rapid spreading of the coronavirus in Europe in spring 2020 led to large emission reductions, particularly in road traffic and aviation. Atmospheric concentrations of NO2 and PM2.5 were mo…
View article: Referee Comment on acp-2021-372
Referee Comment on acp-2021-372 Open
Abstract. The lockdown measures taken to prevent a rapid spreading of the coronavirus in Europe in spring 2020 led to large emission reductions, particularly in road traffic and aviation. Atmospheric concentrations of NO2 and PM2.5 were mo…
View article: The role of emission reductions and the meteorological situation for air quality improvements during the COVID-19 lockdown period in Central Europe
The role of emission reductions and the meteorological situation for air quality improvements during the COVID-19 lockdown period in Central Europe Open
The lockdown measures taken to prevent a rapid spreading of the Corona virus in Europe in spring 2020 led to large emission reductions, particularly in road traffic and aviation. Atmospheric concentrations of NO2 and PM2.5 were mostly redu…
View article: Air quality improvements caused by COVID-19 lockdown measures in Central Europe &#8211; contributions of emission sectors and the meteorological situation
Air quality improvements caused by COVID-19 lockdown measures in Central Europe – contributions of emission sectors and the meteorological situation Open
<p>Corona lockdown measures caused unprecedented emission reductions in many parts of world. However, this does not linearly translate into improved air quality, since weather phenomena like precipitation, wind and solar radiation al…
View article: The contribution of shipping to air pollution in the Mediterranean region &#8211; a model evaluation study&#160;
The contribution of shipping to air pollution in the Mediterranean region – a model evaluation study  Open
<p>Shipping has major contribution to emissions of air pollutants like NOx and SO2 and the global maritime transport volumes are projected to increase significantly. The Mediterranean Sea is a region with dense ship traffic. Air qual…
View article: On the diurnal cycle and variability of winds in the lower planetary boundary layer: evaluation of regional reanalyses and hindcasts
On the diurnal cycle and variability of winds in the lower planetary boundary layer: evaluation of regional reanalyses and hindcasts Open
To accurately calculate the impact of renewables on power production in complex electric power grids, high-resolution and ideally seamless data within the planetary boundary layer are required. Therefore, the quality of different regional …
View article: The impact of ship emission and future greener technologies on the region of the North Sea and Western Baltic Sea
The impact of ship emission and future greener technologies on the region of the North Sea and Western Baltic Sea Open
<p>International ship traffic is steadily increasing since many years. The associated emission of pollutants like sulphur and nitrogen compounds has strong effects on the coastal air quality and the environment. For instance, investi…
View article: Integrating Model Evaluation and Observations into a Production-Release Pipeline
Integrating Model Evaluation and Observations into a Production-Release Pipeline Open
<p>The complexity of Earth System and Regional Climate Models represents a considerable challenge for developers. Tuning but also improving one aspect of a model can unexpectedly decrease the performance of others and introduces hidd…
View article: Intercomparison of ship emission data models for the North and Baltic Sea region
Intercomparison of ship emission data models for the North and Baltic Sea region Open
<p>International ship traffic is steadily increasing since many years. The associated emission of pollutants like sulphur and nitrogen compounds has strong effects on the coastal air quality and the environment. For instance, investi…
View article: Internal Model Variability of the Regional Coupled System Model GCOAST-AHOI
Internal Model Variability of the Regional Coupled System Model GCOAST-AHOI Open
Simulations of a Regional Climate Model (RCM) driven by identical lateral boundary conditions but initialized at different times exhibit the phenomenon of so-called internal model variability (or in short, Internal Variability—IV), which i…
View article: Review of the paper 'Impact Analysis ....' - a major revision needed to prevent rejection
Review of the paper 'Impact Analysis ....' - a major revision needed to prevent rejection Open
The paper reviewed is about a very severe cyclonic storm in the Arabian Sea.In the framework of a downscaling experiment, the author investigates the impact of model resolution and convective parameterization on the results.The English lan…
View article: coastDat3 COSMO-CLM MERRA2
coastDat3 COSMO-CLM MERRA2 Open
Project: open feed-in time series based on a Renewable Energy Database - The dataset was produced in the framework of the project openFRED. The data are dedicated to force energy system models, i.e. relevant parameters for wind energy (gus…
View article: Modelling tidal influence on sea breezes with models of different complexity
Modelling tidal influence on sea breezes with models of different complexity Open
Tides influence both the formation and development of sea breezes. The aim of this study is to investigate the tidal influence to decide which model complexity is needed to reproduce the main influence of tides in a numerical model of coas…