Solar Ultraviolet Imager (SUVI): New satellite sensor will analyze and predict severe space weather

Lockheed Martin engineers in Denver install the Solar Ultraviolet Imager (SUVI) on the GOES-R Sun Pointing Platform. 

SUVI was built at the Lockheed Martin Advanced Technology Center in Palo Alto, Calif.

Credit: Lockheed Martin

Lockheed Martin has delivered a new solar analysis payload that will help scientists measure and forecast space weather, which can damage satellites, electrical grids and communications systems on Earth.

The Solar Ultraviolet Imager (SUVI) instrument was integrated with the first flight vehicle of the National Oceanic and Atmospheric Administration's (NOAA) next-generation Geostationary Operational Environmental Satellite, known as GOES-R.

The GOES-R Series spacecraft are designed and built by Lockheed Martin in Denver, Colo.

"It is enormously satisfying to see the first GOES-R satellite and its instruments coming together, and it is great to see SUVI in flight configuration on the satellite's Sun-Pointing Platform," said Jeff Vanden Beukel, Lockheed Martin SUVI program director at the Advanced Technology Center in Palo Alto, where the instrument was built.

"We look forward to continuing our collaboration with NASA and NOAA to produce state-of-the-art scientific instruments that increase safety and improve quality of life."

SUVI will provide the required solar observational capabilities that enable NOAA's Space Weather Prediction Center in Boulder, Colo.,;

• to monitor solar activity and to issue accurate, real-time alerts; when space weather could affect the performance and reliability of technological systems in space and on the ground, 
• through the enhanced detection of coronal holes, solar flares and coronal mass ejections, 
• as well as improved geomagnetic storm and power blackout forecasts.

Extreme Space weather is known to disrupt satellite operations, communications, navigation, and the distribution of electricity through power grids.

Timely forecasts of severe space weather events would help satellite operators and electrical grid technicians mitigate potential damage to such systems.

Lockheed Martin is under contract to build the first four next-generation GOES satellites (R, S, T, and U).

Four of the six instruments for the GOES-R satellite have been delivered to the Denver facility and are being integrated with the spacecraft.

Once the instrument complement is completely integrated, a full suite of environmental tests will be conducted. Launch of the GOES-R satellite is scheduled for the first quarter of 2016.

NASA-NOAA Suomi NPP VIIRS satellite sensor: More precise hurricane forecasts

Tropical Storm Flossie imagery in July 2013 from Suomi NPP’s VIIRS Day-Night band revealing that the storm shifted more to the north, sparing the big island of Hawaii from a direct hit, but bringing the islands of Oahu, Molokai and Maui into a tropical storm warning area. 

Credit: NOAA

The ability to use satellites to locate a storm that could evolve into a severe storm or hurricane will likely become more accurate for this year's Atlantic hurricane season beginning June 1.

By then, the National Oceanic and Atmospheric Administration's (NOAA), weather forecasters will be able to further improve the use of sensors aboard the NASA-NOAA Suomi National Polar-orbiting Partnership satellite (Suomi NPP).

U.S. Polar Environmental satellites such as Suomi NPP provide complete global coverage twice daily, while NOAA/NASA Geostationary Operational Environmental Satellites offer imagery over a fixed area.

To improve the ability to better find and track hurricanes, NOAA scientists are finding ways to incorporate data from Suomi NPP's Visible Infrared Imaging Radiometer Suite, VIIRS sensor, that allows observations of Earth's atmosphere and surface during nighttime hours and offers enhanced capability to see through clouds.

VIIRS provides many advances over previous operational imagers and advances compared to its research predecessor, the Moderate Resolution Imaging Spectroradiometers (MODIS) currently operating on NASA's Aqua and Terra satellites.

It is these advances in polar imagery that will give forecasters a new tool to improve their predictions.

Similarly, the radar on board the NASA/Japan Aerospace Exploration Agency Tropical Rainfall Measuring Mission (TRMM) satellite has the capability to see through and distinguish between precipitating cumulus and the cirrus clouds which TRMM's infrared sensor also detects.

The next-generation of these sensors is set to launch from Japan next month aboard the Global Precipitation Measurement (GPM) satellite.

The information to track storms comes from satellites surface stations, weather balloons, radar and aircraft.

Most current satellites provide important information during day and night, although observations in the visible part of the spectrum are limited at night.

That is where VIIRS has an advantage. The VIIRS day-night band is sensitive enough to provide storm information even under limited moonlight conditions, a major advancement for storm analysis.

The Advanced Technology Microwave Sounder (ATMS) sensor aboard Suomi NPP also provides temperature and water vapour measurements with greater accuracy than similar microwave instruments onboard earlier satellites.

In relatively clear areas away from the storm center and in the eye of intense storms, the Cross-track Infrared Sensor (CrIS), also on Suomi NPP, enhances ATMS temperature and moisture information by providing measurements with even greater vertical and horizontal resolution.

Installation of the CrIS instrument. Credit: Ball Aerospace