Aerosols erupted from volcanoes may significantly alter climate because they can impact cloud dynamics, radiation budget, and tropospheric chemistry. The optical and physical characteristics of the Spatio-temporal variation of aerosols and gases' impact on the atmosphere during the recent La Palma eruption have been examined in the current paper from 19 September to 31 October 2021. The result shows that before the La Palma eruption, the AOD value was 0.1 showing a clear sky. However, after the eruption daily mean AOD reached the highest values of 0.7 and 0.56, showing that La Palma had high aerosol loading when the eruption occurred. The 0.4 value Aerosol index was observed. The coarse mode aerosols contributed more to the overall aerosol load than fine mode aerosols, confirming their existence above La Palma. Analysis revealed that mixed aerosols were present over La Palma. Due to the powerful ash plume's ability to scatter sunlight, the high value of Single-Scattering Albedo (~ 0.99) was detected. The maximum concentration of SO₂, HCHO, NO₂, O_3, and CO was found to be 60 mmol/m², 120 µmol/m², 70 µmol/m², 129 mmol/m², and 50 mmol/m², respectively, over the La Palma region. The ash plume's trajectory by the forward trajectory and the Hybrid Single Particle Lagrangian Integrated Trajectory dispersion model showed the plume moving in the southwest direction.

火山喷发的气溶胶可能会显着改变气候，因为它们会影响云动态、辐射预算和对流层化学。本文研究了2021年9月19日至10月31日期间拉帕尔马火山爆发期间气溶胶和气体对大气影响的时空变化的光学和物理特征。结果表明，在拉帕尔马火山爆发之前，AOD值为0.1，表示天空晴朗。然而，喷发后日平均AOD达到最高值0.7和0.56，表明拉帕尔马岛喷发时气溶胶负荷较高。观察到气溶胶指数为 0.4。粗模式气溶胶对整体气溶胶负荷的贡献大于细模式气溶胶，证实了它们在拉帕尔马岛上方的存在。分析显示拉帕尔马岛上空存在混合气溶胶。由于火山灰羽流具有强大的散射阳光的能力，检测到单散射反照率值较高（~ 0.99）。_{SO 2}、HCHO、NO ₂、O ₃和 CO的最大浓度分别为 60 mmol/m ²、120 µmol/m ²、70 µmol/m ²、129 mmol/m ²和 50 mmol/m ²分别在拉帕尔马地区上空。前向轨迹和混合单粒子拉格朗日积分轨迹弥散模型显示灰羽的运动轨迹显示灰羽向西南方向移动。