著者

Rikie Suzuki

出版者

The Association of Japanese Geographers

雑誌

Geographical review of Japan, Series B (ISSN:02896001)

巻号頁・発行日

vol.69, no.2, pp.185-193, 1996-12-01 (Released:2008-12-25)

参考文献数

63

被引用文献数

1

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Mesoscale climatological studies by Japanese scientists in the recent decade are reviewed. The spatially dense network of the Automated Meteorological Data Acquisition System (AMeDAS) has provided hourly meteorological information since 1976. This review paper focuses on studies, that utilized AMeDAS data on land/sea breeze, extended sea breeze, regional wind distribution, boundary layer climate, local front, and precipitation. In addition to this theme, studies on the winter monsoon are introduced.

著者

Shin NAGAI Shinpei YOSHITAKE Tomoharu INOUE Rikie SUZUKI Hiroyuki MURAOKA Kenlo Nishida NASAHARA Taku M SAITOH

出版者

日本農業気象学会

雑誌

農業気象 (ISSN:00218588)

巻号頁・発行日

vol.70, no.3, pp.163-170, 2014 (Released:2014-09-10)

参考文献数

26

被引用文献数

6 10

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Long-term continuous phenological observation of cherry tree blooming is an important and challenging task in the evaluation of year-to-year weather and climate changes in spring in Japan. Here, (1) we performed daily field observations with a time-lapse digital camera in a deciduous broad-leaved forest in Japan from January 2004 to December 2013; and (2) we detected year-to-year variations in the blooming phenology of Prunus sargentii by visual inspection of the images and by image analysis. We found that (1) the red digital numbers (i.e., the digital intensity values of the red pixels; DNR) extracted from the time-lapse digital camera images tended to peak in full bloom; and (2) the green excess index (GEI) (based on the red, green, and blue digital numbers) tended to be lowest in full bloom. These results indicate that DNR and GEI are useful for detecting the timing of full bloom in P. sargentii.