SatFC-G: Visible and Near-IR Bands

About the Lesson

This lesson introduces you to the two visible imaging bands and one of the near-infrared bands on the GOES R-U ABI (Advanced Baseline Imager), focusing on their spectral characteristics and how they affect what each band observes. The near-infrared band at 0.86 micrometers is included because of it's close spectral proximity to the visible bands and complementary observing capabilities. Also included is a brief discussion of the customization of visible enhancements as an important consideration for improving the depiction of various features of interest.

On completing the lesson, you should be able to:

  • Identify the ABI's two visible spectral bands, the "blue" and "red" bands, and various phenomena that can be detected in the spectral regions they cover
  • Identify one of the ABI's four near-IR spectral bands, also known as the "veggie" band, and describe how it contrasts to the two visible spectral bands
  • Identify sun glint in visible and near-IR imagery
  • Identify favored times for viewing haze, dust and smoke, and which of the visible and near-IR bands is generally more sensitive to atmospheric aerosol detection
  • Briefly state the advantage of adjusting enhancement tables in visible imagery for feature identification