Joint Polar Satellite System (JPSS)
Encyclopedia
Joint Polar Satellite System (JPSS) is the latest generation of U.S. polar-orbiting, non-geosynchronous, environmental satellites. JPSS will provide the global environmental data used in numerical weather prediction
Numerical weather prediction
Numerical weather prediction uses mathematical models of the atmosphere and oceans to predict the weather based on current weather conditions. Though first attempted in the 1920s, it was not until the advent of computer simulation in the 1950s that numerical weather predictions produced realistic...

 models for forecasts, and scientific data used for climate monitoring. JPSS will aid in fulfilling the mission of the U.S. National Oceanic and Atmospheric Administration (NOAA), an agency of the Department of Commerce
United States Department of Commerce
The United States Department of Commerce is the Cabinet department of the United States government concerned with promoting economic growth. It was originally created as the United States Department of Commerce and Labor on February 14, 1903...

. Data and imagery obtained from the JPSS will increase timeliness and accuracy of public warnings and forecasts of climate and weather events, thus reducing the potential loss of human life and property and advancing the national economy. The JPSS is developed by the National Aeronautics and Space Administration (NASA)
NASA
The National Aeronautics and Space Administration is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research...

 for the National Oceanic and Atmospheric Administration (NOAA), who is responsible for operation of JPSS. Two satellites are planned for the JPSS constellation of satellites. JPSS satellites will be flown and the scientific data from JPSS will be processed by the JPSS - Common Ground System (JPSS-CGS).

History

JPSS was created by the White House in February 2010 http://npoess.noaa.gov/About/NPOESS_Decision_Fact_Sheet_20100201.pdf following the restructuring dissolution of the National Polar-orbiting Environmental Satellite System (NPOESS)
NPOESS
The National Polar-orbiting Operational Environmental Satellite System was to be the United States' next-generation satellite system that would monitor the Earth's weather, atmosphere, oceans, land and near-space environment. NPOESS satellites were to host proven technologies and operational...

 program. The original satellite orbit concept from the NPOESS program was divided between two sponsor agencies: NOAA was given responsibility for the afternoon orbit, while environmental measurements from morning orbit will be obtained from the Defense Weather Satellite System (DWSS).

Purpose

Information about our planet helps the nation plan, predict, respond, and protect lives and property. The United States government recognizes that the nation’s system of polar-orbiting environmental satellites are necessary for supporting climate research and operational weather and storm forecasting for civil, military and international partners.

JPSS will continue to address NOAA’s requirements to provide global environmental data used in numerical weather prediction models for forecasts, as well as provide space weather observations, and direct read-out and data collection products and services to users and customers. Data imagery obtained from the Joint Polar Satellite System will increase timeliness and accuracy of public warnings and forecasts of climate and weather events, thus reducing the potential loss of human life and property and advancing the national economy.

JPSS will replace the current Polar-orbiting Operational Environmental Satellites (POES), managed by NOAA and the ground processing component of both POES and the Defense Meteorological Satellite Program (DMSP)
Defense Meteorological Satellite Program
The Defense Meteorological Satellite Program monitors meteorological, oceanographic, and solar-terrestrial physics for the United States Department of Defense. The program is now run by the National Oceanic and Atmospheric Administration. The mission of the satellites was revealed in March 1973...

. Operational environmental requirements from polar-orbit will also be met by the NPOESS Preparatory Project (NPP)
NPOESS
The National Polar-orbiting Operational Environmental Satellite System was to be the United States' next-generation satellite system that would monitor the Earth's weather, atmosphere, oceans, land and near-space environment. NPOESS satellites were to host proven technologies and operational...

, which is planned for launch in 2011.

Data from the JPSS system shall be made freely available, by the United States Government, to domestic and international users, in support of U.S. commitments for the Global Earth Observing System of Systems (GEOSS).

Technical specifications

The JPSS satellites will carry a suite of sensors designed to collect meteorological, oceanographic, climatological, and solar-geophysical observations of the earth land, oceans, atmosphere, and near-earth space.

The JPSS Common Ground System (CGS) converges the NOAA-NASA civil polar environmental satellite program, NPOESS Preparatory Project (NPP)
NPOESS
The National Polar-orbiting Operational Environmental Satellite System was to be the United States' next-generation satellite system that would monitor the Earth's weather, atmosphere, oceans, land and near-space environment. NPOESS satellites were to host proven technologies and operational...

, and the Air Force’s
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

 Defense Weather Satellite System (DWSS) ground systems into a single, common system that will satisfy both U.S. and partner international environmental monitoring satellite needs from polar orbit.

The JPSS-1 spacecraft is based upon the design of the NPP satellite, with a different communications design for downlinking the raw, unprocessed data back to Earth.

PSS Sensors/Instruments:
The Visible Infrared Imaging Radiometer Suite (VIIRS): takes global visible and infrared observations of land, ocean, and atmosphere parameters at high temporal resolution.
The Cross-track Infrared Sounder (CrIS): will produce high-resolution, three-dimensional temperature, pressure, and moisture profiles. These profiles will be used to enhance weather forecasting models, and will facilitate both short- and long-term weather forecasting. Over longer timescales, they will help improve understanding of climate phenomena such as El Niño and La Niña
La Niña
La Niña is a coupled ocean-atmosphere phenomenon that is the counterpart of El Niño as part of the broader El Niño-Southern Oscillation climate pattern. During a period of La Niña, the sea surface temperature across the equatorial Eastern Central Pacific Ocean will be lower than normal by 3–5 °C...

.
The Advanced Technology Microwave Sounder (ATMS): a cross-track scanner with 22 channels, provides sounding observations needed to retrieve profiles of atmospheric temperature and moisture for civilian operational weather forecasting as well as continuity of these measurements for climate monitoring purposes.
Ozone Mapper Profiler Suite (OMPS): an advanced suite of three hyperspectral instruments, extends the 25-plus year total-ozone and ozone-profile records. These records are used by ozone-assessment researchers and policy makers to track the health of the ozone layer. The improved vertical resolution of OMPS data products allows for better testing and monitoring of the complex chemistry involved in ozone destruction near the troposphere. OMPS products, when combined with cloud predictions, also help produce better ultraviolet index forecasts.
Clouds and Earth's Radiant Energy System (CERES): senses both solar-reflected and Earth-emitted radiation from the top of the atmosphere to the Earth's surface. Cloud properties are determined using simultaneous measurements by other JPSS instruments such as the VIIRS and will lead to a better understanding of the role of clouds and the energy cycle in global climate change.

The ground communications and processing system for JPSS is known as the JPSS Common Ground System (JPSS CGS), and consists of a Command, Control, and Communications Segment (C3S) and the Interface Data Processing Segment (IDPS). Both are developed by Raytheon Intelligence and Information Systems (IIS)
Raytheon Intelligence and Information Systems
Raytheon Intelligence and Information Systems is a business of Raytheon Company. It is led by Lynn Dugle and its headquarters is located in Garland, Texas, United States...

. The IDPS will process JPSS satellite data to provide environmental data products (aka, Environmental Data Records or EDRs) to NOAA and DoD
United States Department of Defense
The United States Department of Defense is the U.S...

 processing centers operated by the United States government. The IDPS will process EDRs beginning with the NPOESS Preparatory Project (NPP), slated to launch in October 2011 and continue through the lifetime of the JPSS and DWSS systems.

The C3S is responsible for managing the overall JPSS (and potentially DWSS) missions from control and status of the space and ground assets to ensuring delivery of timely, high-quality data from the Space Segments (SS) to IDPS for processing. In addition, the C3S provides the globally distributed ground assets necessary to collect and transport mission, telemetry, and command data between the satellites and the processing locations.

NPP launch

The NPOESS Preparatory Project (NPP), originally proposed as a proof-of-concept satellite, will now support NOAA and DoD operations. NPP was launched from Vandenberg Air Force Base
Vandenberg Air Force Base
Vandenberg Air Force Base is a United States Air Force Base, located approximately northwest of Lompoc, California. It is under the jurisdiction of the 30th Space Wing, Air Force Space Command ....

 in California on 28 October 2011 at 09:48 GMT. It will be the first in-flight use of the JPSS ground system and key sensors to be subsequently flown on the JPSS satellites and serve as both a risk-reduction and early-flight opportunity for the JPSS program.

Ball Aerospace

Ball Aerospace & Technologies Corp. (BATC) of Boulder, CO is the spacecraft contractor for both the JPSS-1 satellite and the Ozone instrument (OMPS) on the JPSS program and NPP.

Raytheon Company

Raytheon Intelligence and Information Systems (IIS)
Raytheon Intelligence and Information Systems
Raytheon Intelligence and Information Systems is a business of Raytheon Company. It is led by Lynn Dugle and its headquarters is located in Garland, Texas, United States...

 of Aurora, CO is the prime contractor for the JPSS Common Ground System (CGS), whose major components necessary for operation of the NPP spacecraft have been delivered. Interface Data Processing Systems (IDPS) have been installed at two U.S. government processing facilities, known as weather centrals.

Additionally, Raytheon is constructing and operating receive-only Earth stations, located on all seven continents, to receive the satellite’s raw, unprocessed sensor data in a timely manner for forwarding to the weather centrals. These Earth stations, known as the Distributed Receptor Network (DRN), enhance the data latency of the JPSS system significantly.

Raytheon Space and Airborne Systems (SAS)
Raytheon Space and Airborne Systems
Raytheon Space and Airborne Systems is a major business segment of Raytheon. Headquartered in El Segundo, California, SAS has a total employment of 12,000 and 2010 sales of US$ 4.8 billion. Rick Yuse is the segment's President...

 of El Segundo, CA is the developer and builder for the Visible Infrared Imaging Radiometer Suite (VIIRS) for the NPP, JPSS and DWSS programs.

ITT Corporation

ITT Corporation
ITT Corporation
ITT Corporation is a global diversified manufacturing company based in the United States. ITT participates in global markets including water and fluids management, defense and security, and motion and flow control...

http://www.itt.com/ of Fort Wayne, Indiana, is the developer and builder for the Cross-track Infrared Sounder (CrIS) instrument planned for flight on the first Joint Polar Satellite System (JPSS-1).

Northrop Grumman

Northrop Grumman Electronic Systems(NGES)
Northrop Grumman Electronic Systems
' was created by Northrop Grumman's acquisition of Westinghouse Electronic Systems Group in 1996. The Electronic Systems sector is a leading designer, developer, and manufacturer of a wide variety of advanced defense electronics and systems. The division has 120 locations worldwide, including 72...

, of Azusa, CA is the developer and builder for the Advanced Technology Microwave Sounder (ATMS), a legacy instrument previously flown on the mission.

Northrop Grumman Aerospace Systems(NGAS) http://www.as.northropgrumman.com/ of Redondo Beach, CA is the developer and builder for the Clouds and Earth's Radiant Energy System (CERES), a legacy instrument previously flown on the NASA Earth Observation System (EOS) satellites.

Further reading

  1. http://npoess.noaa.gov/About/NPOESS_Decision_Fact_Sheet_20100201.pdf
  2. http://jointmission.gsfc.nasa.gov/launch.html
  3. http://www.nesdis.noaa.gov/pdf/jpss.pdf
  4. http://ams.confex.com/ams/91Annual/webprogram/Paper187172.html
  5. http://www.ll.mit.edu/publications/journal/pdf/vol18_no2/18_2_4_Fischer.pdf
  6. http://www.spacenews.com/civil/100202-white-house-dissolves-npoess-satellite-partnership.html
  7. http://www.oso.noaa.gov/history/future-polar.htm

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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