Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106
<p>From 25 May to 21 July 2017, the research vessel <i>Polarstern</i> performed the cruise PS106 to the high Arctic in the region north and northeast of Svalbard. The mobile remote-sensing platform OCEANET was deployed aboard <i>Polarstern</i>. Within a single container...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-10-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/13/5335/2020/amt-13-5335-2020.pdf |
| _version_ | 1819001835842699264 |
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| author | H. J. Griesche P. Seifert A. Ansmann H. Baars C. Barrientos Velasco J. Bühl R. Engelmann M. Radenz Y. Zhenping Y. Zhenping Y. Zhenping A. Macke |
| author_facet | H. J. Griesche P. Seifert A. Ansmann H. Baars C. Barrientos Velasco J. Bühl R. Engelmann M. Radenz Y. Zhenping Y. Zhenping Y. Zhenping A. Macke |
| author_sort | H. J. Griesche |
| collection | DOAJ |
| description | <p>From 25 May to 21 July 2017, the research vessel <i>Polarstern</i> performed the cruise PS106 to the high Arctic in the region north and northeast of Svalbard. The mobile remote-sensing platform OCEANET was deployed aboard <i>Polarstern</i>. Within a single container, OCEANET houses state-of-the-art remote-sensing equipment, including a multiwavelength Raman polarization lidar Polly<span class="inline-formula"><sup>XT</sup></span> and a 14-channel microwave radiometer HATPRO (Humidity And Temperature PROfiler). For the cruise PS106, the measurements were supplemented by a motion-stabilized 35 GHz cloud radar Mira-35. This paper describes the treatment of technical challenges which were immanent during the deployment of OCEANET in the high Arctic. This includes the description of the motion stabilization of the cloud radar Mira-35 to ensure vertical-pointing observations aboard the moving <i>Polarstern</i> as well as the applied correction of the vessels heave rate to provide valid Doppler velocities. The correction ensured a leveling accuracy of <span class="inline-formula">±0.5</span><span class="inline-formula"><sup>∘</sup></span> during transits through the ice and an ice floe camp. The applied heave correction reduced the signal induced by the vertical movement of the cloud radar in the PSD of the Doppler velocity by a factor of 15. Low-level clouds, in addition, frequently prevented a continuous analysis of cloud conditions from synergies of lidar and radar within Cloudnet, because the technically determined lowest detection height of Mira-35 was 165 m above sea level. To overcome this obstacle, an approach for identification of the cloud presence solely based on data from the near-field receiver of Polly<span class="inline-formula"><sup>XT</sup></span> at heights from 50 m and 165 m above sea level is presented. We found low-level stratus clouds, which were below the lowest detection range of most automatic ground-based remote-sensing instruments during 25 % of the observation time.</p>
<p>We present case studies of aerosol and cloud studies to introduce the capabilities of the data set. In addition, new approaches for ice crystal effective radius and eddy dissipation rates from cloud radar measurements and the retrieval of aerosol optical and microphysical properties from the observations of Polly<span class="inline-formula"><sup>XT</sup></span> are introduced.</p> |
| first_indexed | 2024-12-20T22:55:32Z |
| format | Article |
| id | doaj.art-6d4a30c7b36f472390b6edf8be69b166 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-20T22:55:32Z |
| publishDate | 2020-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-6d4a30c7b36f472390b6edf8be69b1662022-12-21T19:24:08ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482020-10-01135335535810.5194/amt-13-5335-2020Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106H. J. Griesche0P. Seifert1A. Ansmann2H. Baars3C. Barrientos Velasco4J. Bühl5R. Engelmann6M. Radenz7Y. Zhenping8Y. Zhenping9Y. Zhenping10A. Macke11Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanySchool of Electronic Information, Wuhan University, Wuhan, ChinaKey Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan, ChinaLeibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germany<p>From 25 May to 21 July 2017, the research vessel <i>Polarstern</i> performed the cruise PS106 to the high Arctic in the region north and northeast of Svalbard. The mobile remote-sensing platform OCEANET was deployed aboard <i>Polarstern</i>. Within a single container, OCEANET houses state-of-the-art remote-sensing equipment, including a multiwavelength Raman polarization lidar Polly<span class="inline-formula"><sup>XT</sup></span> and a 14-channel microwave radiometer HATPRO (Humidity And Temperature PROfiler). For the cruise PS106, the measurements were supplemented by a motion-stabilized 35 GHz cloud radar Mira-35. This paper describes the treatment of technical challenges which were immanent during the deployment of OCEANET in the high Arctic. This includes the description of the motion stabilization of the cloud radar Mira-35 to ensure vertical-pointing observations aboard the moving <i>Polarstern</i> as well as the applied correction of the vessels heave rate to provide valid Doppler velocities. The correction ensured a leveling accuracy of <span class="inline-formula">±0.5</span><span class="inline-formula"><sup>∘</sup></span> during transits through the ice and an ice floe camp. The applied heave correction reduced the signal induced by the vertical movement of the cloud radar in the PSD of the Doppler velocity by a factor of 15. Low-level clouds, in addition, frequently prevented a continuous analysis of cloud conditions from synergies of lidar and radar within Cloudnet, because the technically determined lowest detection height of Mira-35 was 165 m above sea level. To overcome this obstacle, an approach for identification of the cloud presence solely based on data from the near-field receiver of Polly<span class="inline-formula"><sup>XT</sup></span> at heights from 50 m and 165 m above sea level is presented. We found low-level stratus clouds, which were below the lowest detection range of most automatic ground-based remote-sensing instruments during 25 % of the observation time.</p> <p>We present case studies of aerosol and cloud studies to introduce the capabilities of the data set. In addition, new approaches for ice crystal effective radius and eddy dissipation rates from cloud radar measurements and the retrieval of aerosol optical and microphysical properties from the observations of Polly<span class="inline-formula"><sup>XT</sup></span> are introduced.</p>https://amt.copernicus.org/articles/13/5335/2020/amt-13-5335-2020.pdf |
| spellingShingle | H. J. Griesche P. Seifert A. Ansmann H. Baars C. Barrientos Velasco J. Bühl R. Engelmann M. Radenz Y. Zhenping Y. Zhenping Y. Zhenping A. Macke Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106 Atmospheric Measurement Techniques |
| title | Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106 |
| title_full | Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106 |
| title_fullStr | Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106 |
| title_full_unstemmed | Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106 |
| title_short | Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during <i>Polarstern</i> cruise PS106 |
| title_sort | application of the shipborne remote sensing supersite oceanet for profiling of arctic aerosols and clouds during i polarstern i cruise ps106 |
| url | https://amt.copernicus.org/articles/13/5335/2020/amt-13-5335-2020.pdf |
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