Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Trajectory Dependence of Atmospheric Boundary Layer Turbulence
  Sensing using Small Unmanned Vehicles   Atmospheric turbulence, especially in the near-surface boundary layer is
known to be under-sampled due to the need to capture a wide separation in
length and time-scales and limitation in the number of sensors. Over the past
decade, the use if Unmanned Aircraft Systems (UAS) technology is approaching
ubiquitous proportions for a wide variety of applications, especially with the
recent FAA relaxation of flying restrictions. From a geophysical sciences
perspective, such technology would allow for sensing of large-scale atmospheric
flows, particularly, atmospheric boundary layer (ABL) turbulence, air quality
monitoring in urban settings where multitude of small, minimally-invasive and
mobile sensors can drastically alter our ability to study such complex
phenomena. Currently available observational data of atmospheric boundary layer
physics is so sparse and infrequent which significantly limits analysis. With
the quantity and resolution of the data that can be measured using a swarm of
UAS, three-dimensional reconstruction and deduction of coherent structures in
ABL turbulence may be feasible. However, key challenges remain in the form of
identifying optimal trajectories to fly the UAS to obtain the relevant
quantifications of the turbulence, interpretation of the sensor data from
mobile sensors and understanding how representative are the sparse measurements
of the overall turbulent boundary layer. This leads to many fundamentally
interesting questions if which a few are explored in this article.

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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: cs
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ