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| 題 名 | 東亞對流層臭氧空間分布特徵與氣候因子之相關性探討=The Study of Spatial Characteristics of Tropospheric Ozone and the Relationship between Tropospheric Ozone and Its Related Climate Factors over East Asia |
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| 作 者 | 陳汎凌; 尤思喻; 柳中明; 程萬里; | 書刊名 | 大氣科學 |
| 卷 期 | 36:2 2008.06[民97.06] |
| 頁 次 | 頁127-146 |
| 分類號 | 328.2 |
| 關鍵詞 | 衛星觀測; 臭氧管柱; 滴定效應; EOF分析; Satellite data; TOR; EOF; Titration effect; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本研究選定東亞區域東經88.125度至151.875度、北緯3.5度至47.5度,以一、四、七、十等四個月份分別代表一年四季,使用衛星遙測資料,分析對流層臭氧管柱、二氧化氮管柱等因子間的相關聯性。對流層臭氧分布主要受季節氣候影響,除了一月冬季氣候型態不利於污染物累積外,其餘月份皆有臭氧累積於大陸東部。中國主要經濟活動區域臭氧之增減與日照及雲量相關,太陽輻射減弱可能是近地面臭氧降低的主要因素。相關性分析中,四月及七月於紫外線充足區域具有較高之正相關性分布;然而,十月之總臭氧和二氧化氮間則爲中度負相關,此二氧化氮增加臭氧減少的現象,可能和當季氣流穩定有利於夜間滴定效應有關。EOF選出之特徵年顯示,近地表臭氧分布受到日照強度、地形及大氣環流影響,低壓及下風處容易有高臭氧累積。 |
| 英文摘要 | This study examined the long-term trend and correlation between Tropospheric Ozone Residue (TOR), nitrogen dioxides, and other ozone related climate factors in East Asia (88.125°E-151.875°E, 3.5°N-47.5°N) by using satellite remote sensing data released by NASA TOMS. The long-term mean analysis discussed for four months, January, April, July, and October reveals that the distribution of tropospheric ozone in East Asia varies with seasons, except in January, which has high pressure cold air mass over Siberia. However in other months, tropospheric ozone is centered in east part of Mainland China. The correlation between TOR and NO2 is considerably good in the region which has high ultra-violet flux in April and July. Besides, the correlation is moderate negative in October. This phenomenon is related to the stable weather condition in autumn, which enhances the night time titration effect and eliminated the ozone produced by daytime photochemical process. By the analysis of EOF selected synoptic years in four months from 1979 to 2005, the distribution of near ground ozone is effected by the strength of solar radiation, landscape, and atmosphere circulation, ozone is easily to accumulate in downstream and low pressure area. |
本系統中英文摘要資訊取自各篇刊載內容。