Influences of El Niño Modoki event 1994/95 onaerosol concentrations over southern China
Influences of El Niño Modoki event 1994/95 onaerosol concentrations over southern China
复制标题
1994/95年厄尔尼诺Modoki事件对华南地区气溶胶浓度的影响
DOI：
10.1002/2015jd023659
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Hong Liao
中科院分区：
文献类型：
--
作者：
Juan Feng;Jianping Li;Jianlei Zhu;Hong Liao
利用1986 ~ 2006年气象资料，利用GEOS - Chem模式研究了El Niño Modoki事件1994/1995年对中国南方对流层气溶胶浓度的潜在影响。结果表明，1994/1995年El Niño Modoki事件在成熟期（北方冬季）气溶胶浓度增加，在衰减期（北方春、夏、秋）气溶胶浓度减少。发现气溶胶浓度异常是由于与El Niño Modoki有关的环流变化，由此气溶胶质量通量的水平和垂直输送决定了与该事件有关的气溶胶浓度格局。相比之下，湿沉积的作用似乎有限。此外，这些结果表明，与1994/1995年Niño Modoki事件相关的气溶胶浓度异常幅度有可能达到气候平均值的30%左右，这表明Niño Modoki对中国南方气溶胶浓度的影响起着重要作用。
The potential influence of El Niño Modoki event 1994/1995 on tropospheric aerosol concentrations was investigated for southern China using the GEOS‐Chem model with meteorological data collected from 1986 to 2006. The results suggest that aerosol concentrations increase during mature phases of El Niño Modoki event 1994/1995 (boreal winter) and decrease during decay phases (boreal spring, summer, and autumn). Aerosol concentrations anomalies were found to be due to circulation changes associated with El Niño Modoki, whereby both the horizontal and vertical transport of aerosol mass fluxes determined the pattern of aerosol concentrations associated with the event. In contrast, the role of wet deposition appeared to be limited. Furthermore, these results suggest that the amplitude of anomalous aerosol concentrations associated with El Niño Modoki event 1994/1995 have the potential to reach approximately 30% of the climatological mean, indicating that El Niño Modoki plays an important role in influencing aerosol concentrations over southern China.