Global mean values of ABI Bands
CIMSS scientists have created a website that extracts from the Level 1b ABI files information on the global mean radiance (and maximum, and minimum radiances) for each of the 16 channels at this link. The figure above tracks the global mean temperature of the GOES-16 Band 8 (Upper Level Water Vapor, 6.19 µm) from June 2021 (the earliest date yet available) through the present. Some rare data dropouts are obvious (and have not been filtered out). There are interesting time scales within this time series; for example, there is a 2-week oscillation starting near the end of 2022. That’s more apparent, starting after 15 December 2022, in the blown-up image shown below, from 1 November through 2 February. You can also see daily changes in the Brightness Temperature in the time series below, likely related to solar forcing.
The toggle below compares the Global Mean 6.19 µm brightness temperature on 1 January and 1 February 2023. Note the peak near solar noon at 75.2oW, the GOES-16 sub-satellite point. This might also be influenced by high topography that is sensed by Band 8 (that is: the Andes Mountains).
A similar site for monitoring cloud products (Cloud-top Height, Cloud-top Pressure, etc.) is here.