On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica
Cloud height, direction and velocity were measured by means of stereoscopic observation using two fish-eye lens cameras in the summer season of 1968 at Syowa Station, Antarctica. Although the method is somewhat uncertain in regard of observational and analytical errors, we can obtain the cloud heigh...
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National Institute of Polar Research
1976
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ftdoajarticles:oai:doaj.org/article:31534eb146404ec7b1109f9980077d0a 2023-05-15T14:03:24+02:00 On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica Katsuhiro KIKUCHI Hiroshi FUKUTANI Kimiko KASAHARA 1976-12-01T00:00:00Z https://doi.org/10.15094/00007876 https://doaj.org/article/31534eb146404ec7b1109f9980077d0a EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00007876 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007876 0085-7289 2432-079X https://doaj.org/article/31534eb146404ec7b1109f9980077d0a Antarctic Record, Iss 57, Pp 1-16 (1976) Geography (General) G1-922 article 1976 ftdoajarticles https://doi.org/10.15094/00007876 2022-12-31T15:39:23Z Cloud height, direction and velocity were measured by means of stereoscopic observation using two fish-eye lens cameras in the summer season of 1968 at Syowa Station, Antarctica. Although the method is somewhat uncertain in regard of observational and analytical errors, we can obtain the cloud height within a range of error of 10 percent if the location of the clouds for observation, is carefully selected, with the exception of the periphery and around the zenith of images of fish-eye lens photographs. The results of the analysis were as follows : In the case of Ci, Cc and Cs of high level clouds, the height was within a range of 5 to 8km in the case of Ac cloud at the middle level the height was within a range of 2 to 3km and in the Sc cloud at the low level the height was approximately 1km. These heights coincided in all cases with the cloud heights estimated from the sounding curves obtained by routine radiosonde observation. On the other hand, in comparison with the heights reported by routine naked eye observation, they coincided with the cases of Ac and Sc clouds alone, whereas, in the case of the high level clouds, the cloud heights were different from each other. The reported heights of the high level cloud by naked eye observation were in a range of 4 to 5km invariably. The calculated direction and velocity of each cloud based on the data observed by fish-eye lens cameras coincided closely with the direction and velocity at the same level estimated by the radiosonde observations. From these results the calculated cloud heights at all levels are considered reasonable, and it is concluded that the reported heights of the high level cloud by naked eye observation are comparatively lower. Cu and Cb clouds were not observed during this period. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Syowa Station |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English Japanese |
topic |
Geography (General) G1-922 |
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Geography (General) G1-922 Katsuhiro KIKUCHI Hiroshi FUKUTANI Kimiko KASAHARA On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica |
topic_facet |
Geography (General) G1-922 |
description |
Cloud height, direction and velocity were measured by means of stereoscopic observation using two fish-eye lens cameras in the summer season of 1968 at Syowa Station, Antarctica. Although the method is somewhat uncertain in regard of observational and analytical errors, we can obtain the cloud height within a range of error of 10 percent if the location of the clouds for observation, is carefully selected, with the exception of the periphery and around the zenith of images of fish-eye lens photographs. The results of the analysis were as follows : In the case of Ci, Cc and Cs of high level clouds, the height was within a range of 5 to 8km in the case of Ac cloud at the middle level the height was within a range of 2 to 3km and in the Sc cloud at the low level the height was approximately 1km. These heights coincided in all cases with the cloud heights estimated from the sounding curves obtained by routine radiosonde observation. On the other hand, in comparison with the heights reported by routine naked eye observation, they coincided with the cases of Ac and Sc clouds alone, whereas, in the case of the high level clouds, the cloud heights were different from each other. The reported heights of the high level cloud by naked eye observation were in a range of 4 to 5km invariably. The calculated direction and velocity of each cloud based on the data observed by fish-eye lens cameras coincided closely with the direction and velocity at the same level estimated by the radiosonde observations. From these results the calculated cloud heights at all levels are considered reasonable, and it is concluded that the reported heights of the high level cloud by naked eye observation are comparatively lower. Cu and Cb clouds were not observed during this period. |
format |
Article in Journal/Newspaper |
author |
Katsuhiro KIKUCHI Hiroshi FUKUTANI Kimiko KASAHARA |
author_facet |
Katsuhiro KIKUCHI Hiroshi FUKUTANI Kimiko KASAHARA |
author_sort |
Katsuhiro KIKUCHI |
title |
On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica |
title_short |
On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica |
title_full |
On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica |
title_fullStr |
On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica |
title_full_unstemmed |
On the Cloud Height by Stereoscopic Observation Using Two Fish-Eye Lens Cameras in the Summer Season at Ayowa Station, Antarctica |
title_sort |
on the cloud height by stereoscopic observation using two fish-eye lens cameras in the summer season at ayowa station, antarctica |
publisher |
National Institute of Polar Research |
publishDate |
1976 |
url |
https://doi.org/10.15094/00007876 https://doaj.org/article/31534eb146404ec7b1109f9980077d0a |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Antarctic Record, Iss 57, Pp 1-16 (1976) |
op_relation |
https://doi.org/10.15094/00007876 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007876 0085-7289 2432-079X https://doaj.org/article/31534eb146404ec7b1109f9980077d0a |
op_doi |
https://doi.org/10.15094/00007876 |
_version_ |
1766274038542368768 |