Wednesday, June 4, 2025

Anomalous Cloud-Top Divergence in Absence of Visible Convection

 The top panels show IR and VIS imagery, while the bottom panels display Octane CTD, and GREMLIN reflectivities. GREMLIN agrees well with the other fields/products, though I did not verify it against real radar data (as today is a no-radar day).

One feature that stood out was the Octane CTD product. I marked a blue rectangle highlighting high CTD values (between 2 and 4) in an area where no convection appears in the satellite imagery. I do not know if this is caused by the cloud motion around this area, but it appears to be an artifact caused by the algorithm.

- Iceman

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