@article{SiegmundFunkSommeretal.2022,
  author    = {Siegmund, Nicole and Funk, Roger and Sommer, Michael and Avecilla, Fernando and Esteban Panebianco, Juan and Iturri, Laura Antonela and Buschiazzo, Daniel},
  title     = {Horizontal and vertical fluxes of particulate matter during wind erosion on arable land in the province La Pampa, Argentina},
  series = {International journal of sediment research},
  volume    = {37},
  journal   = {International journal of sediment research},
  number    = {5},
  publisher = {IRTCES},
  address   = {Beijing},
  issn      = {1001-6279},
  doi       = {10.1016/j.ijsrc.2022.01.004},
  pages     = {539 -- 552},
  year      = {2022},
  abstract  = {A detailed analysis of horizontal and vertical particulate matter (PM) fluxes during wind erosion has been done, based on measurements of PM smaller than 10, 2.5, and 1.0 mu mm, at windward and leeward positions on a measuring field. The three fractions of PM measurement are differently influenced by the increasing wind and shear velocities of the wind. The measured concentrations of the coarser fractions of the fine dust, PM10, and PM2.5, increase with wind and shear velocity, whereas the PM1.0 concentrations show no clear correlation to the shear velocity. The share of PM2.5 on PM10 depends on the measurement height and wind speed and varies between 4 and 12 m/s at the 1 m height ranging from 25\% to 7\% (average 10\%), and at the 4 m height from 39\% to 23\% (average 30\%). Although general relationships between wind speed, PM concentration, and horizontal and vertical fluxes could be found, the contribution of the measuring field was very low, as balances of incoming and outgoing fluxes show. Consequently, the measured PM concentrations are determined from a variety of sources, such as traffic on unpaved roads, cattle drives, tillage operations, and wind erosion, and thus, represent all components of land use and landscape structure in the near and far surroundings of the measuring field. The current results may reflect factors from the landscape scale rather than the influence of field-related variables. The measuring devices used to monitor PM concentrations showed differences of up to 20\%, which led to considerable deviations when determining total balances. Differences up to 67\% between the calculated fluxes prove the necessity of a previous calibration of the devices used. (c) 2022 International Research and Training Centre on Erosion and Sedimentation/the World Association for Sedimentation and Erosion Research.},
  language  = {en}
}
@phdthesis{Siegmund2022,
  author    = {Siegmund, Nicole},
  title     = {Wind driven soil particle uptake Quantifying drivers of wind erosion across the particle size spectrum},
  doi       = {10.25932/publishup-57489},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-574897},
  school      = {Universit{\"a}t Potsdam},
  pages     = {ix, 56},
  year      = {2022},
  abstract  = {Among the multitude of geomorphological processes, aeolian shaping processes are of special character, Pedogenic dust is one of the most important sources of atmospheric aerosols and therefore regarded as a key player for atmospheric processes. Soil dust emissions, being complex in composition and properties, influence atmospheric processes and air quality and has impacts on other ecosystems. In this because even though their immediate impact can be considered low (exceptions exist), their constant and large-scale force makes them a powerful player in the earth system. dissertation, we unravel a novel scientific understanding of this complex system based on a holistic dataset acquired during a series of field experiments on arable land in La Pampa, Argentina. The field experiments as well as the generated data provide information about topography, various soil parameters, the atmospheric dynamics in the very lower atmosphere (4m height) as well as measurements regarding aeolian particle movement across a wide range of particle size classes between 0.2μm up to the coarse sand. The investigations focus on three topics: (a) the effects of low-scale landscape structures on aeolian transport processes of the coarse particle fraction, (b) the horizontal and vertical fluxes of the very fine particles and (c) the impact of wind gusts on particle emissions. Among other considerations presented in this thesis, it could in particular be shown, that even though the small-scale topology does have a clear impact on erosion and deposition patterns, also physical soil parameters need to be taken into account for a robust statistical modelling of the latter. Furthermore, specifically the vertical fluxes of particulate matter have different characteristics for the particle size classes. Finally, a novel statistical measure was introduced to quantify the impact of wind gusts on the particle uptake and its application on the provided data set. The aforementioned measure shows significantly increased particle concentrations during points in time defined as gust event. With its holistic approach, this thesis further contributes to the fundamental understanding of how atmosphere and pedosphere are intertwined and affect each other.},
  language  = {en}
}