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Wind speed from actively heated fiber optic cables


Authors: Justus van Ramshorst
Owners: CTEMPs OSU-UNR
Resource type:Composite Resource
Created:Jan 02, 2019 at 11:14 p.m.
Last updated: Jan 03, 2019 at 12:17 a.m. by CTEMPs OSU-UNR

Abstract

Near-surface wind speed is typically only measured by point observations. The so-called Actively Heated Fiber-Optic (AHFO) technique, however, has the potential to provide high-resolution distributed observations, allowing for better understanding of different processes. However, before it can be widely used, its performance needs to be tested in a range of settings. Therefore, in this work, experimental results on this novel observational wind-probing technique are presented. We utilized a controlled wind-tunnel setup to assess both the accuracy and the precision of AHFO as well as its potential for outdoor atmospheric operation. The technique allows for wind speed characterization with a spatial resolution of 0.3 m on a 1 s time scale. The flow in the wind tunnel is varied in a controlled manner, such that the mean wind, ranges between 1 and 17 m/s. Comparison of the AHFO measurements with observations from a sonic anemometer shows a high overall correlation, ranging from 0.94-0.99. Also, both precision and accuracy are greater than 95 %. As such, it is concluded that the AHFO has potential to be employed as an outdoor observational technique in addition to existing techniques. In particular, it allows for characterization of spatial varying fields of mean wind in complex terrain, such as in canopy flows or in sloping terrain. In the future the technique could be combined with regular Distributed Temperature Sensing (DTS) for turbulent heat flux estimation in micrometeorological/hydrological applications.

Raw DTS project data will be available in 2020 by contacting ctemps@unr.edu.

Subject Keywords

DTS,wind speed,AHFO

How to cite

Ramshorst, J. v. (2019). Wind speed from actively heated fiber optic cables, HydroShare, http://www.hydroshare.org/resource/a43fa2ca10c44088bc599907ae6cbfb9

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

Sharing status:

  • Public Resource  Public
  • Sharable Resource  Shareable

Coverage

Spatial:

 Coordinate System/Geographic Projection:  WGS 84 EPSG:4326
 Coordinate Units:  Decimal degrees
Place/Area Name: OSU Wind Tunnel

Longitude
-123.2856°
Latitude
44.5588°

Temporal:

 Start Date:
 End Date:

Content

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Authors

The people or organizations that created the intellectual content of the resource.

Name Organization Address Phone Author Identifiers
Justus van Ramshorst

Contributors

People or organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
CTEMPs OSU-UNR CTEMPs Nevada, US

Credits

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation Collaborative Research: Facility Support: Center for Transformative Environmental Monitoring Programs (CTEMPs) 1440506

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