TY - JOUR
T1 - Particle image velocimetry of a dust devil observed in a desert
AU - Ito, Junshi
AU - Niino, Hiroshi
N1 - Publisher Copyright:
© 2014, the Meteorological Society of Japan.
PY - 2014
Y1 - 2014
N2 - Dust devils are small-scale atmospheric vortices that are oftenobserved on deserts. Using a video of a dust devil that occurred in a close distance, this study attempts to apply Particle Image Velocimetry (PIV) to obtain flows in the dust devil for the first time. Images taken by two cameras enable us to connect a pixel size into actual length scale. The estimated maximum tangential wind and updraft in the dust devil are 16 m s-1 and 6 ms-1, respectively. These wind speeds are comparable to these of strong ones reported in previous observational studies.
AB - Dust devils are small-scale atmospheric vortices that are oftenobserved on deserts. Using a video of a dust devil that occurred in a close distance, this study attempts to apply Particle Image Velocimetry (PIV) to obtain flows in the dust devil for the first time. Images taken by two cameras enable us to connect a pixel size into actual length scale. The estimated maximum tangential wind and updraft in the dust devil are 16 m s-1 and 6 ms-1, respectively. These wind speeds are comparable to these of strong ones reported in previous observational studies.
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U2 - 10.2151/sola.2014-022
DO - 10.2151/sola.2014-022
M3 - Article
AN - SCOPUS:84920701004
SN - 1349-6476
VL - 10
SP - 108
EP - 111
JO - Scientific Online Letters on the Atmosphere
JF - Scientific Online Letters on the Atmosphere
IS - 1
ER -