Marta Wenta

Marta Wenta
Karlsruhe Institute of Technology | KIT · Institute of Meteorology and Climate Research

Ph.D.

About

12
Publications
1,167
Reads
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47
Citations
Citations since 2016
11 Research Items
47 Citations
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Education
October 2016 - October 2021
University of Gdansk
Field of study
  • Numerical Modeling and Observations of Atmospheric Boundary Layer over Sea Ice.
October 2013 - July 2015
University of Gdansk
Field of study
  • Physical Oceanography
October 2010 - July 2013
University of Gdansk
Field of study
  • Oceanography

Publications

Publications (12)
Article
Full-text available
The floe size distribution (FSD) is an important characteristics of sea ice, influencing several physical processes that take place in the oceanic and atmospheric boundary layers under/over sea ice, as well as within sea ice itself. Through complex feedback loops involving those processes, FSD might modify the short-term and seasonal evolution of t...
Preprint
Full-text available
The floe size distribution (FSD) is an important characteristics of sea ice, influencing several physical processes that take place in the oceanic and atmospheric boundary layers under/over sea ice, as well as within sea ice itself. Through complex feedback loops involving those processes, FSD might modify the short-term and seasonal evolution of t...
Article
Full-text available
The Hailuoto Atmospheric Observations over Sea ice (HAOS) campaign took place at the western-most point of Hailuoto island (Finland) between 27 February and 2 March 2020. The aim of the campaign was to obtain atmospheric boundary layer (ABL) observations over seasonal sea ice in the Bay of Bothnia. Throughout 4 d, both fixed-wing and quad-propeller...
Article
Full-text available
Off the coast of Victoria Land, Antarctica an area of open water-the Terra Nova Bay Polynya (TNBP)-persists throughout the austral winter. The development of this coastal polynya is driven by extreme katabatic winds blowing down the slopes of Transantarctic Mountains. The surface-atmosphere coupling and ABL transformation during the katabatic wind...
Preprint
Full-text available
The Hailuoto Atmospheric Observations over Sea ice (HAOS) campaign took place at the westernmost point of Hailuoto island (Finland) between 27 February and 2 March 2020. The aim of the campaign was to obtain atmospheric boundary layer (ABL) observations over seasonal sea ice in the Bay of Bothnia. Throughout 4 days both fixed-wing and quad-propelle...
Article
Full-text available
Sea ice fragmentation results in the transformation of the surface from relatively homogeneous to highly heterogeneous. Atmospheric boundary layer (ABL) rapidly responds to those changes through a range of processes which are poorly understood and not parametrized in numerical weather prediction (NWP) models. The aim of this work is to increase our...
Article
Full-text available
The response of the atmospheric boundary layer (ABL) to subgrid-scale variations of sea ice properties and fracturing is poorly understood and not taken into account in mesoscale Numerical Weather Prediction (NWP) model parametrizations. In this paper we analyze three-dimensional air circulation within the ABL over fragmented sea ice. A series of i...
Poster
Full-text available
The response of the atmospheric boundary layer (ABL) to subgrid-scale variations of sea ice properties and fracturing is poorly understood and not taken into account in mesoscale Numerical Weather Prediction (NWP) models parametrizations. A series of idealized, high-resolution simulations with Weather Research and Forecasting Model is performed for...
Poster
Full-text available
In mesoscale numerical weather prediction (NWP) models, sea ice cover is typically represented by grid-cell-average ice concentration and thickness. The relevant variables – surface heat and moisture fluxes, roughness, albedo and so on – are calculated as a weighted average of the respective values over sea ice and open water. With typical model re...
Article
We report the results of recent field measurements of seawater thermohaline structure and transparency carried out in early summer 2014 in Puck Bay. Near-bottom, less saline waters occurred almost in the entire study area. Their occurrence in the shallow part of Puck Bay was accompanied by an increase in the seawater transparency. The most likely e...

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Projects

Projects (3)
Project
It's Ph.D. project funded by Polish National Science Center project (No. 2019/32/T/ST10/00171). The aim of the project is to expand our knowledge about sub-grid processes in the atmospheric boundary layer above the sea ice through observations, numerical modeling and validation of model results.
Project
1. To improve existing and to develop new mathematical models of sea ice{waves interactions suitable for further implementation in discrete-element bonded-particle models, i.e., consistent with basic underlying concepts and assumptions of these models. 2. To formulate, based on the theoretical results, numerical ice-waves interaction algorithms, and to implement these algorithms in the code of the DESIgn sea ice model. 3. To verify a hypothesis that: (i) wave-induced breaking tends to produce narrow floe-size distributions and polygonal floe shapes and (ii) that further "grinding" and diminution of ice floes by shearing deformation in the inner parts of the marginal ice zone is responsible for the widely observed heavy-tailed floe-size distributions and rounded floe shapes. 4. To extend the range of applicability of the DESIgn model by developing and implementing parametrization schemes for selected physical processes (e.g., pressure ridging; freezing and melting). Also, to add new functionalities that will facilitate further development of the model, including time-variability of the properties of the model components (grains and bonds). 5. To improve our understanding of processes and factors that may lead to rapid fragmentation and decomposition of the sea ice cover over large domains, similar to the dramatic break-up event that took place in the Beaufort Sea in winter 2013. 6. To use high-resolution numerical modeling to improve our understanding of the atmosphere-sea ice-ocean interactions in situations with strongly fragmented sea ice and/or close to the ice edge. In particular, to analyze the influence of the floe-size distribution on heat and momentum fluxes at the sea surface, as well as on turbulence, mixing processes and vertical stability in the tropospheric and oceanic boundary layers. Also, to verify the existing hypotheses regarding mechanisms of ice-band formation close to the ice edge. 7. To develop parameterizations of the above-mentioned effects, taking into account the floe-size distribution, suitable for future implementation in continuum sea ice models.