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Observed Effect of Mesoscale Vertical Vorticity on Rotation Sense of Dust Devil-Like Vortices in an Urban Area
| Title: | Observed Effect of Mesoscale Vertical Vorticity on Rotation Sense of Dust Devil-Like Vortices in an Urban Area |
| Authors: | Fujiwara, Chusei Browse this author | | Yamashita, Kazuya Browse this author | | Fujiyoshi, Yasushi Browse this author →KAKEN DB |
| Issue Date: | 1-Apr-2012 |
| Publisher: | Meteorological Society of Japan |
| Journal Title: | SOLA |
| Volume: | 8 |
| Start Page: | 25 |
| End Page: | 28 |
| Publisher DOI: | 10.2151/sola.2012-007 |
| Abstract: | Dust devil-like vortices were detected by a three-dimensional scanning coherent Doppler lidar (3D-CDL) in an urban area of Sapporo, Japan, from April 2005 to July 2007. A total of 57 strong, dust devil-like vortices with vertical vorticity exceeding 0.1 s^[-1] were detected in 8 days of the observation period and were associated with a convective cell (fish net) pattern of wind fields detected by the 3D-CDL. The observed vortices had both rotation senses for 7 days. However, all of 7 dust devil-like vortices were cyclonic on 4 October 2006 when cyclonic mesoscale circulation with 4.5 x 10^[-4] s^[-1] in vertical vorticity existed over the 3D-CDL observation area. This result is the observed evidence that mesoscale circulation affects rotation sense of vortices. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/49502 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 藤吉 康志
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