Cloud distribution in the Antarctic from AVHRR data and radiation measurements at the surface
作者:
TAKASHI YAMANOUCHI,
SADAO KAWAGUCHI,
期刊:
International Journal of Remote Sensing
(Taylor Available online 1992)
卷期:
Volume 13,
issue 1
页码: 111-127
ISSN:0143-1161
年代: 1992
DOI:10.1080/01431169208904029
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Cloud distributions were analysed from the AVHRR data of the NOAA satellite received at Syowa Station (69°S, 39°35' E) in Antarctica. Algorithms to derive cloud amount using the brightness temperature difference of infrared channels 3 and 4, or 4 and 5, were assessed by comparing the satellite cloud amount to the manual cloud amount and the downward longwave radiation at the ground surface. Cloud amounts obtained by the brightness temperature difference of channels 3 and 4 in summer agreed with the manual cloud amounts at the surface, and was highly correlated to the downward longwave fluxes. Cloud amounts from channels 4 and 5 showed a rough agreement with the surface cloud amounts. Distributions of cloud derived from the pilot datasets were examined.
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