Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1007/s10546-021-00646-w |
| Licence |
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| Title (Primary) | A feasibility study for determining the sensible heat flux to and from small green roofs |
| Author | Wollschläger, N.; Schlink, U.; Raabe, A. |
| Journal | Boundary-Layer Meteorology |
| Year | 2021 |
| Department | SUSOZ |
| Volume | 181 |
| Issue | 1 |
| Page From | 145 |
| Page To | 166 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Keywords | Eddy-covariance method; Green roof; Flux-variance method; Sensible heat flux; Surface energy balance |
| Abstract | Eddy covariance is an established technique for registering sensible heat fluxes. However, this method is less adequate for smaller surfaces that cannot match the associated footprint. As an alternative technique, a recently constructed acoustic anemometer (Ly-ATOM) is tested, which operates horizontally at an extension of circa 1 m and a data-acquisition frequency of 1 Hz. The Ly-ATOM device reproduces both the acoustic virtual temperature and the horizontal wind components registered by a three-dimensional sonic anemometer. As this Ly-ATOM device can be applied much closer to the ground compared with a sonic anemometer, the size of the related source area is significantly reduced (by a factor of 25). Two methods are used to retrieve the sensible heat flux from variance characteristics of temperature and the horizontal wind components recorded by the Ly-ATOM device: combining the flux-variance-similarity and alternative-flux-variance methods for use in unstable and stable stratification, respectively, yields good results for the sonic measurements. Therefore, these methods can be applied to the Ly-ATOM device as well. In investigating the sensitivity to detect modified surface characteristics, specifically increased evapotranspiration and decreased surface albedo, the Ly-ATOM device proves to be superior to the sonic anemometer which is more vertically removed from the surface of interest. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24792 |
| Wollschläger, N., Schlink, U., Raabe, A. (2021): A feasibility study for determining the sensible heat flux to and from small green roofs Bound.-Layer Meteor. 181 (1), 145 - 166 |
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