There is an update coming for MIGHTI 2.3 temperatures, bringing the product up to version 4. The change primarily affects nighttime temperature retrievals. Details are available in the history attribute in the NetCDF, and also in the online documentation, given in the link below. An update to the FTP site organization is also reported below. - UPDATED New FTP links below

Two weeks ago, ICON passed a major review at NASA Headquarters, putting it on schedule to launch in ten months. It's a big milestone. ICON was approved to proceed with observatory integration at Orbital ATK in Virginia, meaning that the payload with all the attached instruments was mated to the spacecraft bus, a significant step in the journey to becoming a real science observatory.

Earth’s ionosphere is chemically and dynamically complex—energized and stirred up by the aurora at the poles, concentrated and unstable at the equator. ICON focuses on this region because it is the place where coupling between our atmosphere and our space environment really occurs.  Our understanding of this relationship has come from almost a century of measurements, first from the ground and later from space.