Local Noon imagery near the Equinox

September 19th, 2021 |
Multi-satellite True-Color imagery at local noon, 19 September 2021 (Click to enlarge)

SSEC/CIMSS scientists (notably Rick Kohrs) create daily imagery that blends vertical strips of true-color imagery at local Noon, starting near the dateline and proceeding westward. A year-long animation of this product is available here, and was discussed on this blog previously here (and here). Recent images are available at this website — the imagery there, like that above, has a size of 1440×720 pixels. Full-size imagery (9200×4600 pixels) are available for purchase at the website.

The image above, from shortly before the (Northern Hemisphere) Autumnal Equinox shows illumination at both Poles. Careful inspection of the imagery does reveal difference between imagery created from Himawari-8 Imagery over eastern Asia and imagery created from Meteosat imagery over central Asia. There is a more subtle difference between Meteosat imagery and GOES-16 imagery, chiefly because that seam is over the eastern Atlantic Ocean. Such differences arise from spectral differences between the satellites.

This web page with web apps allows anyone to investigate how solar energy varies with the season.

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