CALIOP polluted continental/elevated smoke and height
Posted: Tue Jun 29, 2021 4:40 pm America/New_York
Hello again,
I have a question regarding some of my observations using the L3 CALIOP tropospheric profile all-sky dataset, V4.20/21. In reading about the V4 scene classification algorithm (https://amt.copernicus.org/articles/11/ ... 7-2018.pdf) it seems like it should be impossible for the SCA to type an aerosol as "elevated smoke" if it occurs below 2.5 km, and impossible for a layer to be typed as "polluted continental" if it occurs above 2.5 km. However, when plotting vertical profiles of the extinction coefficients for different aerosol types, I see that in some areas (e.g., Eastern China) there can be extinction coefficients as high as ~.03 km^-1 for elevated smoke that occur below the 2.5 km threshold.
I am not sure if there are more recent updates to the SCA than were mentioned in the 2018 Kim et al paper, but I was wondering if someone could help reconcile this observation with what I'm reading about the SCA.
Thanks in advance for any insight you can provide!
I have a question regarding some of my observations using the L3 CALIOP tropospheric profile all-sky dataset, V4.20/21. In reading about the V4 scene classification algorithm (https://amt.copernicus.org/articles/11/ ... 7-2018.pdf) it seems like it should be impossible for the SCA to type an aerosol as "elevated smoke" if it occurs below 2.5 km, and impossible for a layer to be typed as "polluted continental" if it occurs above 2.5 km. However, when plotting vertical profiles of the extinction coefficients for different aerosol types, I see that in some areas (e.g., Eastern China) there can be extinction coefficients as high as ~.03 km^-1 for elevated smoke that occur below the 2.5 km threshold.
I am not sure if there are more recent updates to the SCA than were mentioned in the 2018 Kim et al paper, but I was wondering if someone could help reconcile this observation with what I'm reading about the SCA.
Thanks in advance for any insight you can provide!