Journal cover Journal topic
Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 3.400 IF 3.400
  • IF 5-year value: 3.841 IF 5-year
    3.841
  • CiteScore value: 3.71 CiteScore
    3.71
  • SNIP value: 1.472 SNIP 1.472
  • IPP value: 3.57 IPP 3.57
  • SJR value: 1.770 SJR 1.770
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 70 Scimago H
    index 70
  • h5-index value: 49 h5-index 49
Discussion papers
https://doi.org/10.5194/amt-2019-118
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2019-118
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 05 Jun 2019

Submitted as: research article | 05 Jun 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Measurement Techniques (AMT).

An LES-based airborne Doppler lidar simulator for investigation of wind profiling in inhomogeneous flow conditions

Philipp Gasch1, Andreas Wieser1, Julie K. Lundquist2, and Norbert Kalthoff1 Philipp Gasch et al.
  • 1Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
  • 2Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, Colorado, USA

Abstract. Wind profiling by Doppler lidar is common practice and highly useful in a wide range of applications. Airborne observations can provide additional insights to ground-based systems by allowing for spatially resolved and targeted measurements. This study prepares the ground for an upcoming airborne Doppler lidar system by investigating the measurement process theoretically. To evaluate the future system characteristics and measurement accuracy, a first LES-based airborne Doppler lidar simulator (ADLS) has been developed. The accuracy of retrieved wind profiles under inhomogeneous flow conditions in the boundary layer is investigated. In general, when using reasonable system setups, wind profiling is possible with acceptable error margins. Results allow for determination of preferential system setups and wind profiling strategies. Under the conditions considered, flow inhomogeneities exert the dominant influence on wind profiling error. In comparison, both the errors caused by random radial velocity fluctuations due to laser system noise and beam pointing inaccuracy due to system vibrations are of smaller magnitude. Airborne Doppler lidar wind profiling at low wind speeds (< 5 m s−1) requires adequate system setups, retrieval strategies and quality filtering as the retrieved wind speeds can be biased otherwise. The utility of quality filtering criteria for wind profile reliability (coefficient of determination and condition number) is examined. While the filtering by the condition number is useful for all circumstances, an inadequate coefficient of determination threshold can bias the retrieved wind speeds. Even with strict quality filtering criteria applied, considerable wind profile retrieval error can exist, especially for steep scan elevation angles of more than 70° from the horizontal or short horizontal averaging distances.

Philipp Gasch et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Philipp Gasch et al.
Philipp Gasch et al.
Viewed  
Total article views: 378 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
313 64 1 378 0 0
  • HTML: 313
  • PDF: 64
  • XML: 1
  • Total: 378
  • BibTeX: 0
  • EndNote: 0
Views and downloads (calculated since 05 Jun 2019)
Cumulative views and downloads (calculated since 05 Jun 2019)
Viewed (geographical distribution)  
Total article views: 313 (including HTML, PDF, and XML) Thereof 308 with geography defined and 5 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 20 Sep 2019
Publications Copernicus
Download
Short summary
We present an airborne Doppler lidar simulator (ADLS) based on high resolution atmospheric wind fields (LES), which is used to evaluate the retrieval accuracy of airborne wind profiling under inhomogeneous wind field conditions. For the conditions considered, flow inhomogeneities exert the dominant influence on wind profiling error. In comparison, errors due to measurement system inaccuracies are smaller. The ADLS allows for determination of preferable system setups and retrieval strategies.
We present an airborne Doppler lidar simulator (ADLS) based on high resolution atmospheric wind...
Citation