Polar-orbiting satellite retires

April 10, 2013

After nearly 11 years of helping the National Oceanic and Atmospheric Administration (NOAA) predict weather and climate patterns and save lives in search and rescue operations, NOAA announced today it has turned off the NOAA-17 Polar-Orbiting Environmental Satellite (POES). It was one of NOAA's longest operating spacecraft, which have a typical lifespan of three years.This Image is from the last operational morning orbit of NOAA-17 on May 26, 2007.
Download here. (Credit: NOAA)

After nearly 11 years of helping the National Oceanic and Atmospheric Administration (NOAA) predict weather and climate patterns and save lives in search and rescue operations, NOAA announced today it has turned off the NOAA-17 Polar-Orbiting Environmental Satellite (POES). It was one of NOAA's longest operating spacecraft, which have a typical lifespan of three years. The shutdown will result in no data gap, as NOAA-17 was being used as a back-up satellite and was removed from service after several key systems on board became inoperable.

NOAA will continue operating several POES spacecraft – NOAA-15, NOAA-16, NOAA-18 and NOAA-19 – in addition to the nation’s newest polar-orbiting satellite, Suomi NPP, launched October 28, 2011. NOAA’s POES spacecraft fly a lower, pole to pole orbit capturing atmospheric data from space that feed NOAA’s weather and climate prediction models.

NOAA began the deactivation process of NOAA-17 on February 18, with the final shut down occurring today. Launched in June 2002, NOAA-17 made 55,000 orbits of the globe, traveling more than 1.5 billion miles while collecting huge amounts of valuable temperature, moisture and image data.

“NOAA-17 helped our forecasters see the early development of severe weather from tornadoes and snow storms to hurricanes, including the busiest hurricane season on record - 2005. It also tracked subtle changes in the environment that signaled the onset of drought and wildfire conditions,” said Mary Kicza, assistant administrator of NOAA’s Satellite and Information Service. “NOAA-17’s long life is a credit to the engineers who built and operated it and the technology that sustained it. Although we say farewell to NOAA-17, we still operate a dependable fleet of satellites that continue to provide crucial data.”

NOAA-17 was part of the international Search and Rescue Satellite-Aided Tracking (SARSAT) network of satellites. SARSAT, which began in 1982, has rescued more than 33,000 people worldwide, including more than 7,000 in the United States and its surrounding waters by detecting distress signals from emergency beacons.

Deactivating NOAA-17 also heralds a significant change for polar-orbiting satellite operations worldwide with NOAA now exclusively flying afternoon orbit spacecraft while its key international partner, the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), flies mid-morning orbit spacecraft. This results in significant savings for U.S. taxpayers, because sharing data helps produce more accurate and uniform data for forecasters. Through the Initial Joint Polar System agreement, NOAA and EUMETSAT established a shared satellite system by exchanging instruments and coordinating the operations of their polar-orbiting satellites to provide operational meteorological and environmental forecasting and global climate monitoring services worldwide. 

NOAA and its partners at the National Aeronautics and Space Administration (NASA) are continuing to build the next generation of polar-orbiting satellites, the Joint Polar Satellite System (JPSS), which is scheduled to launch the JPSS-1 satellite in 2017.

NOAA’s JPSS represents significant technological and scientific advances for more accurate weather forecasting, helping build a Weather Ready Nation — saving lives and property, while promoting economic prosperity. JPSS provides continuity for critical observations of our vast atmosphere, oceans, land, and cryosphere — the frozen areas of the above planet. NOAA, working in partnership with NASA, ensures an unbroken series of global data for monitoring and forecasting environmental phenomena and understanding our Earth.

NOAA’s mission is to understand and predict changes in the Earth's environment, from the depths of the ocean to the surface of the sun, and to conserve and manage our coastal and marine resources. Join us on Facebook, Twitter and our other social media channels.

View the original article here

After 10 years of service, GOES-12 satellite retires

August 19, 2013

GOES-12 captured this visible image of Hurricane Katrina on August 28, 2005, at 11:45 a.m. (EDT). At that time, the storm was at Category 5 strength and projected to impact New Orleans.

High resolution (Credit: NOAA)

GOES-12 has seen it all, from Hurricane Katrina that hit the Gulf Coast in 2005, to the Christmas blizzard that crippled the Central United States in 2009. It even traveled south of the equator to provide coverage for South America starting in 2010. Now, after more than 10 years of stellar service, NOAA’s Geostationary Operational Environmental Satellite (GOES)-12 spacecraft is being retired.

Launched on July 23, 2001, the satellite lasted well beyond its original operational design life of two years for on-orbit storage and five years of actual operations to support forecasters and scientists in NOAA’s National Weather Service.

“GOES-12 gave the Western Hemisphere many years of reliable data as the operational eastern GOES for accurate forecasts, from small storms to those of historic proportions,” said Mary Kicza, assistant administrator for NOAA’s Satellite and Information Service.

Built by Space Systems/Loral, GOES-12 became operational April 1, 2003 as the GOES-East satellite, monitoring weather across the U.S. East Coast and part of the Atlantic Ocean. On May 10, 2010, when GOES-12 was no longer able to be maintained to meet the requirements of the National Weather Service, it was shifted to a new position, where it provided coverage of weather conditions affecting South America, including volcanic ash clouds, wildfires, and drought.

When NOAA decommissions a geostationary satellite like GOES-12, it is boosted further into orbit, the remaining fuel is expended, the battery is disabled and the transmitters are turned off. These maneuvers reduce the chances the satellite will collide with other operational spacecraft. Additionally, decommissioning lowers the risk of orbital debris and stops the satellite from transmitting any signals that could interfere with any current or future spacecraft.

NOAA continues to operate GOES-13, which serves as the GOES East satellite for the United States and GOES-15, which is the GOES West satellite - both hovering 22,300 miles above the equator. NOAA also has an orbital backup geostationary satellite, GOES-14, which can be activated if any of the operational satellites experience trouble.

Kicza added: “The NOAA-NASA partnership is making steady progress toward developing and launching the more advanced GOES-R satellite series to position us into the future.”

GOES-R is expected to more than double the clarity of today’s GOES imagery and provide more atmospheric observations than current capabilities with more frequent images.

On January 29, 2010, GOES-12 captured a powerful storm developing in the U.S. mid-west. In the coming days, two blizzards hit the East Coast resulting in historic snowfall totals.

High resolution (Credit: NOAA)

Data from the GOES-R instruments will be used to create many different products that will help NOAA meteorologists and other users monitor the atmosphere, land, ocean and the sun. GOES-R will also carry a new Geostationary Lightning Mapper that will provide for the first time a continuous surveillance of total lightning activity throughout the Americas and adjacent oceans.

In addition to GOES, NOAA also operates the polar operational environmental satellite (POES) program satellites, the Defense Meteorological Satellites Program series satellites and the Suomi NPP spacecraft.

NOAA’s mission is to understand and predict changes in the Earth's environment, from the depths of the ocean to the surface of the sun, and to conserve and manage our coastal and marine resources. Join us on Facebook, Twitter and our other social media channels.

View the original article here