During the dry season of 2014, the formation of a mesoscale convective system (MCS) caused intense precipitation and strong winds in the central Amazon region. In this period, cases of MCS that occurred during the days when there were higher concentrations of CO were analyzed. Through this criterion, a case of MCS occurred on August 16th, 2014 was selected. We used the chemical-atmospheric model WRF-Chem to assess the influence of biomass burning aerosol on the intensity of precipitation, winds, vertical and horizontal transport associated with this convective system. We show that biomass burning aerosol reduces the strength of the mesoscale convective system, with less vertical and horizontal transport of carbon monoxide and ozone. In the absence of biomass burning aerosol downdrafts and precipitation rate are more intense, and cloud development up to 5 km is more developed, making the horizontal flow and vertical transport of ozone more intense, however, much more efficient in reducing the concentrations of other gases.

2014年旱季，中尺度对流系统（MCS）的形成导致亚马逊中部地区出现强降水和强风。在此期间，分析了在 CO 浓度较高的日子里发生的 MCS 病例。通过该标准，选择了2014年8月16日发生的MCS病例。我们使用化学大气模型 WRF-Chem 来评估生物质燃烧气溶胶对与该对流系统相关的降水强度、风、垂直和水平传输的影响。我们表明，生物质燃烧气溶胶降低了中尺度对流系统的强度，减少了一氧化碳和臭氧的垂直和水平传输。在没有生物质燃烧的情况下，气溶胶下沉气流和降水速率都比较强烈，