The direct effects of black carbon aerosols from different source sectors in East Asia in summer
The direct effects of black carbon aerosols from different source sectors in East Asia in summer
复制标题
东亚夏季不同来源部门黑碳气溶胶的直接影响
DOI：
10.1007/s00382-019-04863-5
复制
发表时间：
2019-11
期刊：
影响因子：
4.6
通讯作者：
Zhao M
中科院分区：
文献类型：
--
作者：
Zhuang B L;Chen H M;Li S;Wang T J;Liu J;Zhang L J;Liu H N;Xie M;Chen P L;Li M M;Zhao M
黑碳气溶胶是一种重要的、短暂的气候强迫因子。为了进一步了解BCs对区域气候的影响，利用区域气候模式RegCM 4研究了夏季亚洲地区居民、工业、电力和交通排放的BCs对区域气候的增暖效应。这四个部门的BC排放量有着非常不同的比率和变化。住宅和工业BC约占BC总排放量的85%，而在亚洲地区，夏季电力BC仅占约0.19%。研究表明，BC气溶胶光学厚度（AOD）和直接辐射强迫（DRF）都高度依赖于排放，而气候效应显示出实质上的非线性排放。夏季东亚地区（100-130°E，20-50°N）大气总BCs、AOD和晴空顶DRF平均值分别为0.02和+1.34W/m ~ 2。每个部门的BC排放可能导致该地区的变暖效应，导致夏季季风环流增强，随后导致局部减少（例如，中国东北）或增加（例如，中国及其周边地区的降雨量。近地面气温升高0.2 K，降水量减少约0.01 mm/d。区域对BC变暖效应的响应与排放量呈高度非线性关系，这可能与大气环流扰动和气候反馈的影响有关。BC排放的空间分布的不均匀性也可能对气候响应产生重要影响，特别是在中国东部和南部。本研究的结果可以帮助我们更好地了解不同排放条件下的BC效应，并为亚洲地区制定更好的BC减排策略提供科学参考。
Black carbon (BC) aerosol is a significant, short-lived climate forcing agent. To further understand the effects of BCs on the regional climate, the warming effects of BCs from residential, industrial, power and transportation emissions are investigated in Asian regions during summer using the state-of-the-art regional climate model RegCM4. BC emissions from these four sectors have very different rates and variations. Residential and industrial BCs account for approximately 85% of total BC emissions, while power BCs account for only approximately 0.19% in Asian regions during summer. An investigation suggests that both the BC aerosol optical depth (AOD) and direct radiative forcing (DRF) are highly dependent on emissions, while the climate effects show substantial nonlinearity to emissions. The total BCs AOD and clear-sky top of the atmosphere DRF averaged over East Asia (100–130°E, 20–50°N) are 0.02 and + 1.34 W/m2, respectively, during summer. Each sector’s BC emissions may result in a warming effect over the region, leading to an enhanced summer monsoon circulation and a subsequent local decrease (e.g., northeast China) or increase (e.g., south China) in rainfall in China and its surrounding regions. The near surface air temperature increased by 0.2 K, and the precipitation decreased by approximately 0.01 mm/day in east China due to the total BC emissions. The regional responses to the BC warming effects are highly nonlinear to the emissions, which may be linked to the influences of the perturbed atmospheric circulations and climate feedback. The nonuniformity of the spatial distribution of BC emissions may also have significant influences on climate responses, especially in south and east China. The results of this study could aid us in better understanding BC effects under different emission conditions and provide a scientific reference for developing a better BC reduction strategy over Asian regions.
登录
查看更多内容
影响因子：
3.4
作者：
B. Zhuang;F. Jiang;Tijian Wang;Shu Li;B. Zhu
通讯作者：
B. Zhuang;F. Jiang;Tijian Wang;Shu Li;B. Zhu
影响因子：
--
作者：
Wu Jian
通讯作者：
Wu Jian
影响因子：
4.9
作者：
Bollasina, Massimo;Nigam, Sumant;Lau, K. -M.
通讯作者：
Lau, K. -M.
影响因子：
3.1
作者：
J. Coakley;P. Chylek
通讯作者：
J. Coakley;P. Chylek
影响因子：
5.2
作者：
Lau, K. -M.;Kim, K. -M.
通讯作者：
Kim, K. -M.