Polarization lidar for detecting dust orientation: first measurements
- 1IAASARS, National Observatory of Athens, Athens, Greece (atsekeri@noa.gr)
- 2Fakultät für Physik, Meteorologisches Institut, Ludwig-Maximilians-Universität, Munich, Germany
- 3Raymetrics S.A., Athens, Greece
- 4Faculty of Physics, University of Vienna, Vienna, Austria
- 5National Institute of R&D for Optoelectronics, Magurele, Romania
The new polarization lidar nicknamed “WALL-E” is designed to monitor dust orientation. Dust orientation has not been extensively investigated for the Earth’s atmosphere, where dust is considered to be randomly-oriented. For monitoring dust orientation, the new polarization lidar emits linearly- and elliptically-polarized light at 1064 nm and detects the linear and circular polarization of the backscattered light. This is done with two lasers emitting in an interleaved fashion, and two telescopes collecting the backscattered light from both lasers. The measurements are performed at variable viewing angles and provide direct flags of dust orientation, along with more detailed information on particle microphysics. The first measurements for dust in Athens are presented.
Acknowledgements. The work is supported by the European Research Council under the European Community’s Horizon 2020 research and
innovation framework program/ERC grant agreement 725698 (D-TECT). We acknowledge PRACE for awarding us access to MareNostrum
at Barcelona Supercomputing Center (BSC), Spain. The work was supported by computational time granted from the Greek Research &
Technology Network (GRNET) in the National HPC facility - ARIS - under project ID pa170906-ADDAPAS, pr005038-REMOD and pr009019-EXEED.
How to cite: Tsekeri, A., Freudenthaler, V., Amiridis, V., Doxastakis, G., Louridas, A., Georgoussis, G., Metallinos, S., Gasteiger, J., Siomos, N., Paschou, P., Georgiou, T., Tsaknakis, G., Evangelatos, C., and Binietoglou, I.: Polarization lidar for detecting dust orientation: first measurements, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-13039, https://doi.org/10.5194/egusphere-egu21-13039, 2021.
