The Impact of Meteorological Factors on the Short-term Cumulative Effect of Air Particulate in Tianjin

• 作者: Liu Lili Wang Wei Wang Yan
• 来源期刊: 气象与环境研究:英文版
• 学科: 地球科学
• 关键词: AIR PARTICULATE SHORT-TERM CUMULATIVE Effect METEOROLOGICAL factor CUMULATIVE index
• 年，卷（期）: 2019,（2）
• 页码范围: 27-32
• 页数: 6页
• 分类号: X513

摘要

In order to reveal the rapid increase mechanism of particulate concentration in short time,a notion of short-term cumulative effect of air particulate is defined as the significant increase of pollutant concentration in a short time under the condition of breeze,stable weather and constant emission caused by human being’s activities. Subsequently,an index of short-term cumulative effect is established with air diffusive equation,and then the macro-scale meteorological situation and micro-scale factors of forming the short-term cumulative effect are discussed with the observation data. The macro-scale meteorological variables contain upper-level weather situations and surface weather situations. The micro-scale factors mainly include the boundary-layer height and boundary-layer stability. The analyses show that boundary-layer factors and weather variables have a significant influence on the short-term cumulative effect. The notion of short-term cumulative effect will play an important role in interpreting the severe pollution weather.