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Monitoring Global Energy Flow to Primary Production 

作成者 Dye, Dennis G.
日本十進分類法 (NDC) 450
内容 研究概要:Global satellite estimates of annual incident and terrestrial vegetation-absorbed photosynthetically active radiation (PAR, 400-700 nm) are evaluated for the 11 years from 1979 to 1989. The data sets were derived from Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) and NOAA Advanced Very High Resolution Radiometer (AVHRR) observations. The mean annual total PAR incident at the Earth's surface between 60°N and 60°S latitudes is estimated to be 1.26×10^6 EJ, of which 9.17×10^5 EJ (73%) is incident on ocean surfaces and 3.42×10^5 EJ (27%) is incident on terrestrial surfaces. A 1.7% reduction in northern hemisphere (60°N-0°) incident PAR in 1982 is attributed to changes in cloud amount and distribution associated with El Nino-Southern Oscillation conditions and possibly aerosols from the 1982 El Chichon volcanic eruption. The estimated annual total PAR absorbed by terrestrial vegetation (APAR) between 60°N and 60°S is 1.10×10^5 EJ, or 8.8% of total incident PAR (11-year means). The observed patterns of distribution and variability account for the primary flow of energy to global primary production.
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
ハンドルURL http://mitizane.ll.chiba-u.jp/meta-bin/mt-pdetail.cgi?cd=00022411
掲載誌情報 Proceedings of the international symposium on Vegetation Monitoring page.79-86 (1995)
フルテキストへのリンク http://mitizane.ll.chiba-u.jp/metadb/up/assist1/C-24_12.pdf
言語 英語


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