Abstract. Seasonal maps of dual view retrieved mid-visible AOD and AODf for four selected years (1998, 2008, 2019, 2020) are introduced and assessed in comparisons to MODIS retrievals and general data of an aerosol climatology. Due to different sensor capabilities (ATSR-2, AATSR and SLSTR) there are still unresolved inconsistencies so that decadal regional trends are not as detectable as with MODIS retrievals. SLSTR retrieval, however, agree with MODIS retrievals that 2020 Covid impacts on AOD values (via comparisons to the pre-COVID 2019 reference) are at best minor and secondary to natural anomalies by wildfires and dust. In radiative transfer applications the dual view AOD data for the four years are processed in the MAC climatology environment to determine aerosol associated radiative effects for total aerosol and for anthropogenic aerosol. Even though the calculated radiative effects are affected by retrieval AOD retrieval tendencies, climate relevant TOA net-flux changes are consistent to result with AOD data from other satellite sensors and a general climatology: −0.9 W/m2 for total aerosol with a significant greenhouse effect and −0.8 and −0.2 W/m2 for anthropogenic aerosol with and without indirect effects, respectively. Aside from global averages, seasonal maps highlight the diversity of regional and seasonal radiative effects.

中文翻译：

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双视图 AOD 反演的气溶胶辐射效应

摘要。引入并评估了选定年份（1998、2008、2019、2020 年）的双视图检索的中可见 AOD 和 AODf 的季节性地图，并与 MODIS 检索和气溶胶气候学的一般数据进行比较。由于传感器能力不同（ATSR-2、AATSR 和 SLSTR），仍然存在未解决的不一致问题，因此十年区域趋势不像 MODIS 反演那样可检测。但是，SLSTR 检索与 MODIS 检索一致，即 2020 年 Covid 对 AOD 值的影响（通过与 COVID 2019 之前的参考进行比较）至多是次要的，次要于野火和灰尘引起的自然异常。在辐射传输应用中，四年的双视图 AOD 数据在 MAC 气候学环境中进行处理，以确定与气溶胶相关的总气溶胶和人为气溶胶的辐射效应。即使计算出的辐射效应受反演 AOD 反演趋势的影响，气候相关的 TOA 净通量变化与来自其他卫星传感器的 AOD 数据和一般气候学的结果一致：-0.9 W/m2 总气溶胶具有显着的温室效应-0.8 和 -0.2 W/m2 分别用于有和没有间接影响的人为气溶胶。除了全球平均值之外，季节性地图还突出了区域和季节性辐射效应的多样性。2 W/m2 分别为有和没有间接影响的人为气溶胶。除了全球平均值之外，季节性地图还突出了区域和季节性辐射效应的多样性。2 W/m2 分别为有和没有间接影响的人为气溶胶。除了全球平均值之外，季节性地图还突出了区域和季节性辐射效应的多样性。