Vertical profiles of black carbon aerosols over the urban locations in South India.
Vertical profiles of black carbon aerosols over the urban locations in South India.
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DOI：
10.1016/j.scitotenv.2012.05.058
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发表时间：
2012-08
期刊：
影响因子：
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通讯作者：
P. Safai;M. Prudhvi Raju;R. Maheshkumar;J. Kulkarni;P. Rao;P. Devara
中科院分区：
文献类型：
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作者：
P. Safai;M. Prudhvi Raju;R. Maheshkumar;J. Kulkarni;P. Rao;P. Devara
黑碳 (BC) 气溶胶的垂直剖面是根据印度热带气象研究所 2009 年在印度南部班加罗尔和海得拉巴上空进行的云气溶胶相互作用和降水增强实验 (CAIPEEX) 计划下的飞机测量确定的。 BC 质量负荷近似单调下降，从表面的 103 至 104 ng/m3 降至约 7 公里高度处的约 102 ng/m3；尽管经常遇到含有异常高BC负荷的中间层，这主要归因于来自地表源的对流输送，伴随着局部边界层和大气稳定性的变化。此外，从气团返回轨迹可以看出；来自遥远来源的远距离运输导致了BC浓度的异常峰值。自由对流层云形成区域中黑碳的存在可能对该区域的云微物理和随后的降雨机制产生重要影响。除此之外，对人类健康的影响也同样重要。
Vertical profiles of black carbon (BC) aerosol were determined from aircraft measurements under the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) program conducted by the Indian Institute of Tropical Meteorology, India during 2009 over Bangalore and Hyderabad in south India. BC mass loadings decreased approximately monotonically from 103to 104ng/m3at the surface to ~102ng/m3at an altitude of about 7km; although layers at intermediate levels containing anomalously high BC loadings were frequently encountered that were attributed mainly to the convective transport from surface sources accompanied by changes in the local boundary layer and atmospheric stability. In addition, as evidenced from air mass back trajectories; long range transport from distant sources contributed to some anomalous spikes in BC concentration. The presence of BC in cloud forming regions of the free troposphere could have important implications for cloud microphysics and subsequent rainfall mechanism over this region. Apart from this, the effects on human health are equally important.