Earthdata Forum

Hi,
I have been looking at some subsetted versions (using Harmony) of the L3 O3 total column data from data, and after looking inside the groups, I do not see a quality flag variable in the product group. I only see these,

group /product:
dimensions(sizes):
variables(dimensions):
float32 column_amount_o3(time, latitude, longitude),
float32 radiative_cloud_frac(time, latitude, longitude),
float32 o3_below_cloud(time, latitude, longitude),
float32 fc(time, latitude, longitude),
float32 uv_aerosol_index(time, latitude, longitude),
float32 so2_index(time, latitude, longitude

The User Guide does not mention much about L3 : https://asdc.larc.nasa.gov/documents/tempo/guide/TEMPO_Level-2-3_O3TOT_user_guide_V1.0.pdf

Thanks for the help!

Hello,

Thank you for your question. The TEMPO V03 L3 O3Tot does not contain a quality flag variable (the TEMPO V03 L2 O3Tot does contain a quality flag). However, the TEMPO Science Team is considering adding the quality flag from L2 to L3 for future versions.

Thanks. So if we use L3 in the meantime, is it based on all pixels from L2 or QA'ed pixels? Thanks again.

Hello,
Thank you for contacting us regarding the TEMPO O3TOT product.
If you use L3 now, it is based on all pixels from the L2 product without QA/QC.