Igor Esau
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View article: Urban microclimate simulations guided by residents' perception maps
Urban microclimate simulations guided by residents' perception maps Open
Urban microclimate simulations require significant expert efforts and use considerable computational resources. Yet, the results might focus on areas and processes of limited interest for the urban residents. How can one eliminate this usa…
View article: Urban Heat Islands in the Arctic: Long-Term Observations in Seven North-Eurasian Cities
Urban Heat Islands in the Arctic: Long-Term Observations in Seven North-Eurasian Cities Open
In the modern era of modeling and remote sensing, in situ urban meteorological observations still remain critically important for validating urban climate models, remote sensing products, and developing data-driven ML models. To collect su…
View article: Measurement report: A complex street-level air quality observation campaign in a heavy-traffic area utilizing the multivariate adaptive regression splines method for field calibration of low-cost sensors
Measurement report: A complex street-level air quality observation campaign in a heavy-traffic area utilizing the multivariate adaptive regression splines method for field calibration of low-cost sensors Open
As part of the TURBAN project, the “Legerova campaign” investigated air quality and meteorology in a traffic-dense area of Prague, Czech Republic, from 30 May 2022 to 28 March 2023. The study deployed a network of 20 low-cost sensor (LCS) …
View article: Determining the ideal length of wind speed series for wind speed distribution and resource assessment
Determining the ideal length of wind speed series for wind speed distribution and resource assessment Open
Accurate wind resource assessment depends on wind speed data that capture local wind conditions, crucial for energy estimates and site selection. The International Electrotechnical Commission (IEC) recommends at least one year of data coll…
View article: A city-scale turbulence-resolving model as an essential element of integrated urban services
A city-scale turbulence-resolving model as an essential element of integrated urban services Open
Large-eddy simulation (LES) models, such as the PALM modeling system in this study, are actively used for urban micro-climate modeling. We consider urban LES in a broader context as a mature high-resolution model for integrated urban servi…
View article: Using clustering to understand intra-city warming in heatwaves: insights into Paris, Montreal, and Zurich
Using clustering to understand intra-city warming in heatwaves: insights into Paris, Montreal, and Zurich Open
We introduce a novel methodological advancement by clustering paired near-surface air temperature with the planetary boundary layer height to characterize intra-city clusters for analytics. To illustrate this approach, we analyze three hea…
View article: Towards seamless environmental prediction – development of Pan-Eurasian EXperiment (PEEX) modelling platform
Towards seamless environmental prediction – development of Pan-Eurasian EXperiment (PEEX) modelling platform Open
The Pan-Eurasian Experiment Modelling Platform (PEEX-MP) is one of the key blocks of the PEEX Research Programme. The PEEX MP has more than 30 models and is directed towards seamless environmental prediction. The main focus area is the Arc…
View article: The impact of time series length and temporal resolution on wind resource assessment: a comparative analysis of wind speed distributions
The impact of time series length and temporal resolution on wind resource assessment: a comparative analysis of wind speed distributions Open
In the quest for accurate wind resource assessment crucial for the expansion of wind farms, this study tackles the scientific question of how varying time series lengths and temporal resolutions impact the estimation of wind resources,…
View article: Exploring the Potential of Sentinel-1 Ocean Wind Field Product for Near-Surface Offshore Wind Assessment in the Norwegian Arctic
Exploring the Potential of Sentinel-1 Ocean Wind Field Product for Near-Surface Offshore Wind Assessment in the Norwegian Arctic Open
The exploitation of offshore wind resources is a crucial step towards a clean energy future. It requires an advanced approach for high-resolution wind resource evaluations. We explored the suitability of the Sentinel-1 Level-2 OCN ocean wi…
View article: A local climate perspective on possible development pathways for Longyearbyen, Svalbard
A local climate perspective on possible development pathways for Longyearbyen, Svalbard Open
Arctic human settlements experience formidable challenges from accelerating climate change and environmental transformations. While these towns have demonstrated adaptive resilience, the looming threat of local climate extremes raises conc…
View article: Using web <scp>GIS</scp> to promote stakeholder understanding of scientific results in sustainable urban development: A case study in Bergen, Norway
Using web <span>GIS</span> to promote stakeholder understanding of scientific results in sustainable urban development: A case study in Bergen, Norway Open
This paper highlights the importance of improving stakeholder understanding of environmental factors such as air quality and the urban heat island effect to achieve sustainable development goals. While accurate spatial and temporal environ…
View article: Using Clustering to Understand Intra-city Warming in Heatwaves: Insights into Paris, Montreal, and Zurich
Using Clustering to Understand Intra-city Warming in Heatwaves: Insights into Paris, Montreal, and Zurich Open
We introduce a novel methodological advancement by clustering paired near-surface air temperature with the planetary boundary layer height (PBLH) to characterize intra-city clusters for analytics. To illustrate this approach, we analyze th…
View article: The departure from mixed-layer similarity during the afternoon decay of turbulence in the free-convective boundary layer: results from Large-Eddy Simulations
The departure from mixed-layer similarity during the afternoon decay of turbulence in the free-convective boundary layer: results from Large-Eddy Simulations Open
We investigate the departure from mixed-layer similarity during the afternoon decay of turbulence. More specifically, we aim to characterize the time-development of the departure of the velocity-variances profiles from their mixed-layer si…
View article: Understanding Cold Climate Cities: Implications for Urban Sustainability
Understanding Cold Climate Cities: Implications for Urban Sustainability Open
Studying urban climate in cold climate cities is essential for understanding the implications for urban sustainability. Recent research has found that urban areas in high northern latitudes experience intense and persistent positive temper…
View article: The Departure from Mixed-Layer Similarity During the Afternoon Decay of Turbulence in the Free-Convective Boundary Layer: Results from Large-Eddy Simulations
The Departure from Mixed-Layer Similarity During the Afternoon Decay of Turbulence in the Free-Convective Boundary Layer: Results from Large-Eddy Simulations Open
This study analyses the departure of the velocity-variances profiles from their quasi-steady state described by the mixed-layer similarity, using large-eddy simulations with different prescribed shapes and time scales of the surface kinema…
View article: Knowledge Gaps and Impact of Future Satellite Missions to Facilitate Monitoring of Changes in the Arctic Ocean
Knowledge Gaps and Impact of Future Satellite Missions to Facilitate Monitoring of Changes in the Arctic Ocean Open
Polar-orbiting satellite observations are of fundamental importance to explore the main scientific challenges in the Arctic Ocean, as they provide information on bio-geo-physical variables with a denser spatial and temporal coverage than i…
View article: The Arctic Amplification and Its Impact: A Synthesis through Satellite Observations
The Arctic Amplification and Its Impact: A Synthesis through Satellite Observations Open
Arctic climate change has already resulted in amplified and accelerated regional warming, or the Arctic amplification. Satellite observations have captured this climate phenomenon in its development and in sufficient spatial details. As su…
View article: The urban climate of the largest cities of the European Arctic
The urban climate of the largest cities of the European Arctic Open
Recent studies have found intense and persistent positive temperature anomalies associated with urban areas in high northern latitudes. However, understanding the intensity and variability of urban heat islands (UHI) in these regions remai…
View article: Observations of the urban boundary layer in a cold climate city
Observations of the urban boundary layer in a cold climate city Open
Cold environment supports a large diversity of local climates. Among them, urban climates in northern cities stand out for their pronounced warm temperature anomaly known as the Urban Heat Island (UHI). UHI in northern cities has been alre…
View article: Surface air temperature bias in meteorological models due to misrepresentation of the atmospheric boundary layer thickness
Surface air temperature bias in meteorological models due to misrepresentation of the atmospheric boundary layer thickness Open
<p>Meteorological models are still imperfect. They often reveal a certain bias in the prediction of atmospheric variables near the surface. Among them, the surface air temperature bias is well known. Model developers usually relate t…
View article: Overview: Recent advances in the understanding of the northern Eurasian environments and of the urban air quality in China – a Pan-Eurasian Experiment (PEEX) programme perspective
Overview: Recent advances in the understanding of the northern Eurasian environments and of the urban air quality in China – a Pan-Eurasian Experiment (PEEX) programme perspective Open
The Pan-Eurasian Experiment (PEEX) Science Plan, released in 2015, addressed a need for a holistic system understanding and outlined the most urgent research needs for the rapidly changing Arctic-boreal region. Air quality in China, togeth…
View article: XXI-st century: a shift of paradigm in the planetary boundary layer theory
XXI-st century: a shift of paradigm in the planetary boundary layer theory Open
At the beginning of 21 st century, Sergej Sergeevich Zilitinkevich initiated a shift of the fundamental paradigm in the planetary boundary layer theory, and wider, in statistical hydromechanics of stratified flows. He held the position of …
View article: Dispersion of particulate matter (PM <sub>2.5</sub> ) from wood combustion for residential heating: optimization of mitigation actions based on large-eddy simulations
Dispersion of particulate matter (PM <sub>2.5</sub> ) from wood combustion for residential heating: optimization of mitigation actions based on large-eddy simulations Open
Many cities in the world experience significant air pollution from residential wood combustion. Such an advection–diffusion problem as applied to geographically distributed small-scale pollution sources presently does not have a satisfacto…
View article: Zooming in on Arctic urban nature: green and blue space in Nadym, Siberia
Zooming in on Arctic urban nature: green and blue space in Nadym, Siberia Open
Urban landscape combines built-up areas with strongly altered natural (green and blue) and other open spaces. Voluminous literature examines urban socio-environmental interactions in tropical and temperate cities, whereas high-latitude cit…
View article: completed Reply on RC1
completed Reply on RC1 Open
Abstract. Many cities in the world experience significant air pollution from residential wood combustion. Such an advectionâdiffusion problem as applied to geographically distributed small-scale pollution sources presently does not have …
View article: Comment on acp-2021-341
Comment on acp-2021-341 Open
Abstract. The Pan-Eurasian Experiment (PEEX) Science Plan, released in 2015, addressed a need for a holistic system understanding and outlined the most urgent research needs for the rapidly changing Arctic-boreal region. Air quality in Chi…
View article: Reply on AC1
Reply on AC1 Open
Abstract. Many cities in the world experience significant air pollution from residential wood combustion. Such an advectionâdiffusion problem as applied to geographically distributed small-scale pollution sources presently does not have …