Science & Nature

Earth looks stunning in this 1st full view from the NOAA-21 satellite (photos)

Earth looks stunning in this 1st full view from the NOAA-21 satellite (photos) thumbnail

This global mosaic, captured by the VIIRS instrument on the recently launched NOAA-21 satellite, is a composite image created from these swaths over a period of 24 hours between Dec. 5 and Dec. 6, 2022.

This global mosaic is the first full view of Earth captured by the VIIRS instrument on NOAA’s new NOAA-21 imaging satellite, which launched in November 2022. It shows Earth between Dec. 5 and 6, 2022. (Image credit: NOAA STAR VIIRS Imagery Team)

What can you spot in this latest global picture of Earth? There are crisp turquoise seas around Cuba, an agricultural fire in Northern India and, of course, the rest of our planet as seen in the first full view from NOAA’s latest Earth-observing satellite NOAA-21.

The Earth images that make up this mosaic, and a few closeups, were taken on Dec. 5 and Dec. 6 by an instrument called the Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the satellite, which launched on Nov. 10 from the Vandenberg Space Force Base on Nov. 10. (The spacecraft was previously known as JPSS-2.) VIIRS collects images in both the visible and infrared light spectra, allowing scientists to see details of Earth’s surface.

Related: Powerful new Earth-satellite to study weather’s ‘butterfly effect’

he image above captured by NOAA-21’s VIIRS instrument shows ocean color around the Southern tip of Florida and the Caribbean.

This image from NOAA-21’s VIIRS instrument shows ocean color around the southern tip of Florida and Caribbean as seen between Dec. 5 and Dec. 6, 2022. (Image credit: NOAA STAR VIIRS Imagery Team)

VIIRS provides vital information to scientists about Earth’s oceans, atmosphere and land. It can detect differences in the ocean’s color, telling scientists where phytoplankton are, or whether dangerous algal blooms have formed along human-settled coasts. The instrument’s atmospheric data can help scientists forecast and monitor storm movement.

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NOAA-21 is the second operational satellite in a series called the Joint Polar Satellite System, which provides global, pole-to-pole images. The last JPSS satellite, now known as NOAA-20, launched in November 2017. Before that, the NOAA-NASA Suomi National Polar-Orbiting Partnership (Suomi-NPP), which provided a blueprint for the JPSS, launched in 2011. 

The satellites orbit pole-to-pole, observing the entirety of Earth’s surface twice per day. It cruises 512 miles (824 kilometers) above Earth at 17,000 mph (27,360 kph) and crosses the equator 14 times per day. And they all carry a VIIRS instrument. 

The third JPSS satellite is slated to launch (opens in new tab) in 2027, and the fourth doesn’t yet (opens in new tab) have a launch date.

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