Resolving Atmospheric Flow in Complex Environments: Recent Experiments in Terrain and Forest Canopies

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To contribute to a better understanding of the dynamics of the atmosphere inside and above a forest, vertical profiles are flown with a remotely-controlled multicopter in the Steinkrug forest. This area is located over a slope in the Solling natural area in Lower Saxony (Germany), composed mostly of deciduous trees about 30 m tall. Fifteen vertical flights made near sunset between summer 2019 and spring 2020 were inspected from the surface to 100 m above ground level. These measurements provide information on the vertical structures of wind and temperature within and above the canopy, including the effects of shallow slope flows near the ground. Contrasting measurements downhill outside the forest were also made. The gathered data allow estimated profiles of the turbulent fluxes of sensible heat and momentum to be obtained by computing averages and fluctuations for layers of 5 m depth. A leaf area density profile in both leafy and leafless conditions could also be produced. The presence of a slope flow is inspected at both sites, and the applicability of existing theories is explored.

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Frontiers in Earth Science

Advances in Meteorology Numerical Modeling Using Remote Sensing Observations and Artificial Intelligence Techniques
Edited by Dongmei Xu, Feifei Shen, Swadhin Kumar Behera, Yunheng Wang
Deadline
19 January 2025
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