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

Journal metrics

IF value: 3.668
IF3.668
IF 5-year value: 3.707
IF 5-year
3.707
CiteScore value: 6.3
CiteScore
6.3
SNIP value: 1.383
SNIP1.383
IPP value: 3.75
IPP3.75
SJR value: 1.525
SJR1.525
Scimago H <br class='widget-line-break'>index value: 77
Scimago H
index
77
h5-index value: 49
h5-index49
Preprints
https://doi.org/10.5194/amt-2020-198
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2020-198
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  25 May 2020

25 May 2020

Review status
A revised version of this preprint was accepted for the journal AMT and is expected to appear here in due course.

Validation of Aeolus wind products above the Atlantic Ocean

Holger Baars1, Alina Herzog1,2,3, Birgit Heese1, Kevin Ohneiser1,2, Karsten Hanbuch1, Julian Hofer1, Zhenping Yin1,4,5, Ronny Engelmann1, and Ulla Wandinger1 Holger Baars et al.
  • 1Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germany
  • 2Institute for Meteorology, Universität Leipzig, Leipzig, Germany
  • 3now at: LEM-Software, Ingenieurbüro für Last- und Energiemanagement, Leipzig, Germany
  • 4School of Electronic Information, Wuhan University, Wuhan, China
  • 5Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan, China

Abstract. In August 2018, the first Doppler wind lidar in space called ALADIN was launched on-board the satellite Aeolus by the European Space Agency ESA. Aeolus measures horizontal wind profiles in the troposphere and lower stratosphere on a global basis. Furthermore, profiles of aerosol and cloud properties can be retrieved via the high-spectral-resolution lidar (HSRL) technique. The Aeolus mission is supposed to improve the quality of weather forecasts and the understanding of atmospheric processes.

We used the chance of opportunity to perform a unique validation of the wind products of Aeolus by utilizing the RV Polarstern cruise PS116 from Bremerhaven to Cape Town in November/December 2018. Due to concerted course modifications, six direct intersections with the Aeolus ground track could be achieved on the Atlantic Ocean, west of the African continent. For the validation of the Aeolus wind products, we launched additional radiosondes and used the EARLINET/ACTRIS lidar PollyXT for atmospheric scene analysis. The six analyzed cases proof the concept of Aeolus to be able to measure horizontal wind speeds in the nearly West-East direction. Good agreements with the radiosonde observation could be achieved for both Aeolus wind products – the winds observed in clean atmospheric regions called Rayleigh winds and the winds obtained in cloud layers called Mie winds according to the responsible scattering regime. Systematic and statistical errors of the Rayleigh winds were less than 1.5 m/s and 3.3 m/s, respectively, when comparing to radiosonde values averaged to the Aeolus vertical resolution. For the Mie winds, a systematic and random error of about 1 m/s was obtained from the six comparisons in different climate zones. However, it is also shown that the coarse vertical resolution of 2 km in the upper troposphere which was set in this early mission phase two months after launch led to an underestimation of the maximum wind speed in the jet stream regions. Summarizing, promising first results of the first wind lidar space mission are shown and proof the concept of Aeolus for global wind observations.

Holger Baars et al.

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Holger Baars et al.

Holger Baars et al.

Viewed

Total article views: 367 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
264 94 9 367 7 5
  • HTML: 264
  • PDF: 94
  • XML: 9
  • Total: 367
  • BibTeX: 7
  • EndNote: 5
Views and downloads (calculated since 25 May 2020)
Cumulative views and downloads (calculated since 25 May 2020)

Viewed (geographical distribution)

Total article views: 304 (including HTML, PDF, and XML) Thereof 304 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 20 Sep 2020
Publications Copernicus
Download
Short summary
We present validation measurements for the European Satellite Aeolus which was launched in August 2018. Aeolus measures horizontal wind profiles around the globe. We utilized radiosonde launches onboard the German research vessel Polarstern to validate the Aeolus observations on the Atlantic Ocean – a region were almost no other validation measurements are available. It is shown, that Aeolus is able to measure accurately atmospheric winds and thus may significantly improve weather forecast.
We present validation measurements for the European Satellite Aeolus which was launched in...
Citation