著者

TANI T Wada Naoya

出版者

富山大学

雑誌

FES Far Eastern Studies (ISSN:13477250)

巻号頁・発行日

no.5, pp.45-55, 2006-05

被引用文献数

1

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Summer night temperatures are increasing across most of the globe. In this study, we attempted to detect variability in recent increasing trends in summer night temperatures in Japan. Hourly night temperatures higher than 25°C and 30°C measured by the Automated Meteorological Data Acquisition System (AMeDAS) of the Japan Meteorological Agency were accumulated for each night during each of six approximately 10 day periods during July and August from 1979 to 2002. These two parameters, called ANT25 and ANT30,were used for our analyses. Although increasing trends in night temperature were conspicuous in large cities such as Tokyo, Osaka, and Nagoya, they were also observed widely throughout Japan, including small cities and rural areas. The highest rates of increase in ANT25 were found in early August from Kanto and Hokuriku districts and to the west along the coast. The effects of night warming on rice production in Japan are discussed

著者

WADA N Liu Qi-Jing Kawada Kunio

出版者

富山大学

雑誌

FES Far Eastern Studies (ISSN:13477250)

巻号頁・発行日

no.5, pp.35-43, 2006-05

被引用文献数

2

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We examined the synchronization of soil temperatures on an alpine tundra community between Mt. Changbai in northeastern China, and Mt. Tateyama in central Japan. The soil temperatures were measured at one-hour intervals for a total of 7526 recordings at both study sites, where a glacial relict plant Dryas octopetala var. asiatica was predominant. The hourly mean soil temperatures had high synchronization between the two mountains (r2= 0.87). After comparing soil temperatures by dividing the climate into two seasons, we found that synchronization of temperatures between the two mountains was higher in winter (r2= 0.75) than in summer (r2= 0.44). The Arctic Oscillation index, which is related to atmospheric circulation in the Northern Hemisphere, was significantly correlated with air temperature near each study site in the coldest month. Despite the difference in geographical location, a high similarity of seasonal variations in soil temperature in winter suggests that the thermal condition on the two mountains is controlled by the same air masses from higher latitudes. Keywords: Alpine tundra, Arctic Oscillation, Circumpolar plants, Glacial relict, Temperature innovation activities have a high potential to maintainable growth, this strategy alone is inadequate; entrepreneurship that involves a riskier style of management is required. Third, innovation alone carried out by venture enterprises in Japan can not contribute directly to employment creation. Rather, by combining innovation activities with market-in characteristics, enterprises are more likely to realize a surplus quickly, then achieve maintainable growth, thus indirectly contributing to employment creation.