| 长三角地区吸收性气溶胶时空分布特征 |
| 摘要点击 1823 全文点击 718 投稿时间：2018-11-26 修订日期：2019-04-01 |
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| 中文关键词 吸收性气溶胶 臭氧监测仪(OMI) 吸收性气溶胶光学厚度(AAOD) 时空分布 黑碳 长三角地区 |
| 英文关键词 absorptive aerosol ozone monitoring instrument (OMI) absorptive aerosol optical depth (AAOD) spatial-temporal distribution black carbon Yangtze River Delta |
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| 中文摘要 |
| 利用2008~2017年OMI/Aura OMAERUV L2气溶胶数据集，研究了近10年长三角地区吸收性气溶胶的时空分布特征.结果表明：①在时间分布上，长三角地区气溶胶光学厚度（AOD）与吸收性气溶胶光学厚度（AAOD）的年际变化趋势一致，均为先升后降，于2011年达最高值，分别为0.702和0.056.月际变化显示AAOD高值多发生在1、3和6月，11月到次年1月明显增加.②在空间分布上，长三角地区AAOD呈北高南低分布，AOD与AAOD分布相似，AAOD>0.05的高值区主要集中在安徽北部、江苏北部以及南京、杭州和金华等地区.AAOD与AOD季节空间分布均为春冬高，秋季较低，但二者不同的是，夏季AOD很大，AAOD却很小.长三角地区AAOD和AOD的年均空间分布与黑碳贡献量一致. |
| 英文摘要 |
| Based on the ozone monitoring instrument (OMI)/Aura L2 OMAERUV data from 2008 to 2017, the spatial-temporal distribution of absorptive aerosols during the past 10 years were studied. The results are as follows. ① In the temporal distribution, the inter-annual variation of absorptive aerosol optical depth (AAOD) first increased and then decreased, reaching the highest value of 0.056 in 2011; this is consistent with the aerosol optical depth (AOD) of 0.702 in the Yangtze River Delta. The inter-monthly variation shows that the high value of AAOD appeared mostly in January, March, and June and increased significantly from November to January. ② In the spatial distribution, the AAOD was higher in the north than in the south in the Yangtze River Delta, and the AOD was similar to the AAOD. High values of AAOD above 0.05 were concentrated mainly in northern Anhui and Jiangsu provinces and in Nanjing, Hangzhou, and Jinhua. The seasonal spatial distribution of AAOD and AOD was higher in spring and winter and lower in autumn, although the AOD was very high and the AAOD was low in summer. The contribution of black carbon in the Yangtze River Delta was consistent with the annual spatial distribution of the AAOD and AOD. |
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