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2000年至2023年全球主要来源地区的黑碳:时空变化,垂直分布和极端病例分析

Yurong Zhang¹, Yong Han¹, Yan Liu¹

¹Advanced Science & Technology of Space and Atmospheric Physics Group (ASAG), School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519082, China.

Environmental pollution (Barking, Essex : 1987)

|February 27, 2025

概括

来自人类活动和生物质燃烧的黑碳 (BC) 排放对全球空气质量和气候产生重大影响. 这项研究揭示了BC源和垂直分布的区域差异,为大气研究提供了洞察力.

科学领域:

大气科学大气科学
环境科学环境科学
气候科学气候科学

背景情况:

来自中国东部,印度次大陆,撒哈拉以南非洲和中南美洲等地区的黑碳 (BC) 排放显著影响全球空气质量,气候变化和人类健康.
强烈的人类活动和广泛的生物质燃烧是这些排放的主要原因.

研究的目的:

量化大气BC和人类排放的长期时空变化和垂直分布,从2000年到2023年.
在代表性城市探索极端BC事件的形成机制.
为区域和全球大气环境研究和管理提供科学见解.

主要方法:

用于研究和应用的现代时代回顾分析,版本2 (MERRA-2) 重新分析数据.
分析了各种人为产生的行业的排放清单.
研究了BC的时空变化,垂直形状和季节性模式.

主要成果:

在BC表面质量度和柱体质量密度中观察到的一致的年度趋势.
BC主要来自中国东部和印度次大陆的人为来源;生物质燃烧在撒哈拉以南非洲和中南美洲占主导地位.
人为BC排放的区域差异很大,在撒哈拉以南非洲的所有行业都有明显的增长趋势.
季节性BC模式受到当地气象,人为排放和生物质燃烧的影响.
公元前的垂直分布因地区而异,中国东部/印度次大陆的海拔高度迅速下降,在撒哈拉以南非洲/中南美洲的较低大气层下降速度较慢.
与当地排放,恶劣气象条件和大气循环相关的高度BC事件.

结论:

从多个角度对全球主要来源地区的量化长期BC特征.
在BC来源,趋势和垂直分布方面突出显著的区域差异.
强调了排放,气象和循环在极端BC事件中的复杂相互作用.
为大气环境研究和管理策略提供了宝贵的科学见解.

关键词:

碳黑是一种碳黑.高度事件是指高度事件.部门排放趋势时间空间的变化.垂直分布垂直分布的垂直分布

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