Suomi NPP Day Night Band imagery from the NASA Worldview site, had a large increase in luminance over southwest Iceland on 19 December, to the southwest of the Capitol of Reykjavik. That is shown below in the toggle of 18 December and 19 December 2023 imagery. (Click here for a map of... Read More
The Solar Ultraviolet Imager (SUVI) on GOES satellites revealed an equatorial coronal hole directed towards Earth on the 11th and 12th of December. Coronal holes appear as dark areas in the extreme ultraviolet, or the 195 Angstroms band on SUVI. They appear dark because they are cooler and less dense regions... Read More
Polar2Grid is a powerful software package that enables a user to take Sensor Data Record (SDR) files from JPSS satellites (Suomi-NPP, NOAA-20, NOAA-21) and create high-quality georeferenced imagery that can be color-enhanced. (Polar2Grid also works with data from other polar orbiting satellites!) This blog post details how to scale an... Read More
The presence of three JPSS satellites — Suomi NPP, NOAA-20 and NOAA-21 — allows for animations at high resolution (I01 imagery on VIIRS has 375-m resolution) at even low latitudes. The animation over the island of Guam (at 13.4oN) shows the evolution of clouds between 0246 and 0358 UTC on... Read More
