A clear day
courtesy of the
Ahead to GOES-R
is currently scheduled for launch in 2015
GOES-R is a 3-axis stabilized spacecraft with a designed on-orbit
lifetime of 15 years - 5 years of on-orbit storage and 10 years
of operational life. Additionally, the satellites may be stored
on the ground for up to five years. The GOES-R mission orbits
will be geostationary at 75°W and 135°W. The on-orbit
storage location is geostationary at 105°W. The bus will have
a fault detection and correction system enabling it to survive
the occurrence of any single bus failure. The spacecraft bus will
support the various instrument payloads, communications payloads
and other bus components. Other bus components include propulsion,
attitude determination and control, telemetry, tracking and command,
magnetometer, data handling, thermal, communications, power, mechanisms,
error detection and correction, and structure.
The primary mission instruments are the ABI and HES.
Advanced Baseline Imager (ABI)
Hyperspectral Environmental Suite (HES)
Solar Ultraviolet Imager (SUVI)
Space Environment In-Situ Suite (SEISS)
Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS)
Extreme Ultraviolet Sensor (EUVS)
X-ray Sensor (XRS)
Geostationary Lightning Mapper (GLM)
GOES Rebroadcast (GRB)
Unique Payload Services for Emergency Managers Weather Information
Low Rate Information Transmission (LRIT)
Search and Rescue (SAR)
NOAA Marine and Aviation Operations (NMAO)
Aircraft and Ship Service
Data Collection System (DCS)
Space Weather Mission
Space Weather instrumentation planned for GOES-R continues
a long history of observations from the GOES program with expanded
services to protect those adversely impacted by variable conditions
in the solar and near-Earth Space Weather Prediction. These instruments will monitor the highly-variable solar and near-Earth space environment to protect life and property of those sensitive to space weather fluctuations. The solar pointed instruments (SUVI and EXIS) and geostationary-orbit in-situ measurement instruments (SEISS and Magnetometer)
Three separate instruments are mechanically integrated on a common Sun-pointing platform: the Solar Ultraviolet Imager (SUVI), the solar X-Ray Sensor (XRS), and an Extreme Ultraviolet Sensor (EUVS). The SUVI provides broadband imaging in the soft X-ray to EUV wavelength range at a high cadence. It replaces the current GOES-M/P series Solar X-ray Imager (SXI) instrument. The EUVS is a full disk FOV (40 arc min) detector measuring integral solar EUV flux. The XRS measures the full disk integral solar X-ray flux and will monitor the duration and magnitude of X-ray flares. Together, the EUVS and XRS are referred to as the Extreme ultraviolet and X-ray Irradiance Sensor (EXIS).
The Space Environment In-Situ Suite (SEISS) is a set of energetic particle sensors that monitor the charged particle environment along the GOES orbit path. The SEISS consists of the Energetic Heavy Ion Sensor (EHIS), the Magnetospheric Electron and Proton Sensor (MPS) and the Solar and Galactic Proton Sensor (SGPS).
The energetic particle instruments, called the Space Weather Prediction In-Situ Suite (SEISS), will provide real-time measurements of the charged particle environment in geosynchronous orbit.
The SEISS will monitor geomagnetically trapped electrons and protons; electrons, protons, and heavy ions of direct
solar origin; and galactic background particles. The sensors are designated as the magnetospheric particle sensor (MPS)
the energetic heavy ion sensor (EHIS), and the solar and galactic proton sensor (SGPS). Electrons will be measured on
GOES-R over the range of 30 eV to 4 MeV as on GOES-N. Protons will be measured on GOES-R over the range 30 eV
to 500 MeV and over 500 MeV as compared to the GOES-N measurement range of 80 KeV to 700 MeV. GOES-R will
measure four solar ion mass groups: He, C-N-O, Ne-S, and Fe; by comparison, GOES-N only alpha particles.
The Magnetometer (MAG) measures the magnitude and direction of the Earth's magnetic field in three orthogonal directions. These data provide a map of the space environment that controls charged particle dynamics in the outer region of the magnetosphere.
Similarly to GOES-N, the GOES-R Magnetometer (MAG) will measure the earth’s geomagnetic field at geosynchronous orbit
in three-axes, providing information on the general level of geomagnetic activity and current systems in space. This
information facilitates the detection of magnetopause crossings and sudden magnetic storm commencements, and
detection of sub storms.
|| Areas where GOES-R
- Solar X-ray image dynamic range, resolution, and sensitivity
- EUV measurements for improved modeling of ionosphere and
- Medium energy electron radiation environment responsible for spacecraft
- Four additional energetic solar ion mass groups
Simulated SXI (Solar X-ray Imager) images: GOES R will produce
multi-band "color" images at the same rate as GOES N/P produces
single band images. (Images courtesy of SOHO EIT, a joint NASA/ESA
program; and Steve Hill/NOAA SWPC).
|| Data Processing
The GOES Program Office (GPO) will provide real-time processing of the data streams from the SEISS, SIS and magnetometer instruments and will deliver Level-0 data to CLASS and Level-1b data to SWPC and CLASS.
SWPC will utilize these data in their
real-time alerts and predictions.
|| Data Archive and Access
The ultimate repository for the SEISS, SUVI, EUVS, XRS and magnetometer data
will be NOAA's Comprehensive Large Array-data Stewardship System
(CLASS). This system does not provide real-time data services, however, and SWPC will provide user access to data during the time lag between data collection and their availability in CLASS.
|| Serving the User's
The success of the GOES-R Space Weather Mission depends strongly
on getting early input from the user community. A good way for a user to be heard is to
attend a GOES
Users' Conference. You can check on upcoming meetings at the GOES-R Program Office website. A good way for potential users to learn about GOES-R is to review the presentations from the Fifth Goes
Another way to provide input concerning the SIS and
SEISS public interface and data product availability is by contacting
NGDC directly: 303-497-6137, Daniel.C.Wilkinson@noaa.gov
Links & Documents
GOES-R Program Office: http://www.goes-r.gov
NOAA's Office of System Development: http://www.osd.noaa.gov/
NASA's GOES Program: http://goespoes.gsfc.nasa.gov/goes/spacecraft/r_spacecraft.html
Lockheed Martin works on SIS design: http://www.spaceref.com/news/viewpr.html?pid=15139
GOES-R overview, November 18, 2003: (4
SEISS Performance and Operational Requirements Document (PORD)
March 25, 2004 (312 KB pdf)
GOES-R Space Segment Overview 2006 (102 KB pdf)
CLASS Archive and Access System Requirements v2.2 May 16, 2005 (663 kb doc)
CLASS Level 1 Requirements Document and Mission Success Criteria v1.2 October 6, 2006 (337 kb doc)