| 多云天气异戊二烯排放通量的计算 |
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| 引用本文： | 白建辉. 多云天气异戊二烯排放通量的计算[J]. 环境科学研究, 2006, 19(1): 99-103 |
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| 作者姓名： | 白建辉 |
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| 作者单位： | 中国科学院,大气物理研究所,中层大气与全球环境探测开放实验室,北京,100029 |
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| 摘 要： | 根据2002和2003年夏季内蒙古草原的实测资料,发现多云天气下,云通过可见光辐射对异戊二烯排放带来明显影响.研究和提高云量较大条件下异戊二烯排放通量计算的准确性是非常必要和重要的,它将有助于全面了解和准确估算不同天气、所有时段异戊二烯的排放通量.研究表明,对于云量≥6的时段,可以将经验公式中的大气质量(m)取为1,并使用原计算系数来计算异戊二烯的排放通量,其计算值与观测值相对偏差的平均值可降为72%,该方法可以明显降低多云天气下排放通量计算值的不确定性.
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| 关 键 词： | 云 太阳辐射 异戊二烯 排放通量 不确定性 |
| 文章编号： | 1001-6929（2006）01-0099-05 |
| 收稿时间： | 2005-01-03 |
| 修稿时间： | 2005-01-03 |
The Calculation of Isoprene Emission Flux under Cloudy Sky Conditions |
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| BAI Jian-hui. The Calculation of Isoprene Emission Flux under Cloudy Sky Conditions[J]. Research of Environmental Sciences, 2006, 19(1): 99-103 |
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| Authors: | BAI Jian-hui |
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| Affiliation: | Laboratory for Middle Atmosphere Layer and Globe Environment Observation,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China |
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| Abstract: | It is found that isoprene emission was obviously influenced by clouds through solar radiation,based on the observational data in the Inner Mongolia grassland during the summer seasons of 2002 and 2003.It is important and essential to study and improve the accuracy of calculating isoprene emission flux under the condition of larger cloudiness,which will help us to understand and accurately estimate the isoprene emission flux at different period of time under different sky conditions.The results showed that under the conditions of cloudiness ≥6,when all the coefficients keep the same as before and let the atmospheric mass is equal to 1 in the empirical algorithm,the average of relative bias between calculated and observed isoprene emission fluxes was reduced to 72%.The uncertainties of estimated emission flux of isoprene were reduced evidently by this method for cloudy sky conditions |
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| Keywords: | cloud solar radiation isoprene emission flux uncertainty |
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