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zxdawn / S5P-LNO2

Core code for the TROPOMI lightning NO2 retrievals
GNU General Public License v3.0
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Pair lightning labels generated by DBSCAN with lightning mask #26

Closed zxdawn closed 2 years ago

zxdawn commented 2 years ago

The DBSCAN lightning labels have both clean and polluted lightning, while the lightning mask has distinguished them and grouped them using wind data:

https://github.com/zxdawn/S5P-LNO2/blob/a3404ca04403a71924fa91e7177e2d64783ba37d/main/s5p_lnox_functions.py#L312-L343

Because the number of lighting labels represents the lightning count, it should be updated with the lightning mask. Otherwise, we don't know how much lightning happened in each lightning mask.

zxdawn commented 2 years ago

Note that it's better to have two variables called dbscan_label and lightning_label. lightning_label is paired with the values of lightning mask, while the dbscan_label is the original clustered label by DBSCAN which can help us check the clusters.