QA flags in TEMPO O3 L3 data?

[chayanroyc]

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!

[ASDC - ghayescrepps]

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.

[chayanroyc]

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

[ASDC - joonsung]

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.