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GOES SATELLITE DATA: NGDC manages space<br />

environmental data recorded on the GOES<br />

satellites, including measurements of solar<br />

X-rays, geomagnetic fields, and electrically<br />

charged particles. The new Solar X-ray Imager<br />

(SXI) on GOES-12 gives full disk images of the<br />

Sun in hard and soft X-rays every minute (see<br />

http://sxi.ngdc.noaa.gov).<br />

<strong>NOAA</strong> POES SATELLITE DATA: Space<br />

environmental data recorded on these <strong>NOAA</strong><br />

(TIROS/POES) satellites measures the flux of<br />

electrically charged particles, important<br />

indicators for telecommunication, radio<br />

propagation and astronaut radiation safety.<br />

<strong>NOAA</strong>-OPERATED DMSP SATELLITE DATA:<br />

Space environmental data recorded on DMSP<br />

satellites are measurements of ionospheric<br />

characteristics, magnetic fields, auroral<br />

particles, and auroral imagery for monitoring<br />

the high-latitude ionosphere.<br />

SOLAR DATA: NGDC maintains long-term<br />

archives of solar variability, solar imagery, solar<br />

events, interplanetary, and cosmic rays. Total<br />

solar and solar spectral irradiance are used as<br />

input to physical models of the Earth’s climate.<br />

GEOMAGNETIC VARIATIONS: Magnetic<br />

observatories worldwide routinely provide oneminute<br />

variation recordings of the Earth’s<br />

magnetic field, used to model magnetospheric<br />

conditions.<br />

IONOSPHERIC MEASUREMENTS: Ionospheric<br />

parameters provided by international<br />

observatories facilitate telecommunications,<br />

navigation and positioning using GPS systems.<br />

ONLINE TOOLS: Several online database<br />

management tools allow users to browse,<br />

search, plot, download or “mine” data. These<br />

include the Space Physics Interactive Data<br />

Resource (SPIDR http://spidr.ngdc.noaa.gov)<br />

and the Solar-Geophysical Data (SGD) Online<br />

system which continues a publication begun in<br />

1955, detailing activity on the Sun and its<br />

effects on Earth (http://sgd.ngdc.noaa.gov).<br />

Data Availability:<br />

Many databases are available via the Internet at<br />

no charge. Very large data sets are available on<br />

digital media, including CD-ROM, magnetic<br />

tape, diskette, and high-density Exatape.<br />

Analog data are provided as paper or microfilm<br />

copies. Please visit the NGDC products page<br />

for these popular products.<br />

Where a fee is incurred, the data are available<br />

for the cost of reproduction. Fees may be<br />

waived in exchange for approved data sets.<br />

Data are accepted in almost any format, though<br />

proper documentation is required. Please<br />

contact the center for more information.<br />

The World Data Center (WDC) for Solar-<br />

Terrestrial Physics, Boulder, is collocated with<br />

NGDC. WDC for STP exchanges data with<br />

international partners and supports many<br />

international scientific projects. Visitors are<br />

welcome.

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The <strong>NOAA</strong> NGDC Space Weather Program<br />

supports the U.S. National Space Weather Program<br />

with solar and space environment data from global<br />

networks, by managing the national data archives,<br />

preparing useful products, and providing services<br />

for environmental data. NGDC researches the use<br />

of numerical models to assess and predict the<br />

space environment.<br />

GOES, POES (<strong>NOAA</strong> TIROS) and DMSP satellites<br />

observe and monitor the space environment.<br />

Ground-based programs provide solar, cosmic rays,<br />

ionospheric, and geomagnetic variations databases.<br />

Significant recent additions are GOES Solar X-Ray<br />

Images and solar radio spectral one-second burst<br />

data.<br />

Violent storms on the Sun emit large numbers of<br />

high energy particles that propagate to the Earth,<br />

affecting the local environment and disrupting<br />

operations of technology systems. Effects on the<br />

Earth’s environment include the aurora, solar<br />

proton events, geomagnetic storms, and<br />

ionospheric storms which disrupt communication<br />

and navigation systems.<br />

Geomagnetic storms and increased solar<br />

ultraviolet (UV) emissions heat the Earth’s upper<br />

atmosphere, causing it to expand and thereby<br />

increase the drag on satellites.<br />

Ionospheric data are used to drive space weather<br />

models that reduce errors in GPS positions. Space<br />

Weather “Climatology” as a gridded database gives<br />

an overview of the state of the near-Earth space<br />

environment.<br />

US Department of Commerce<br />

National Oceanic & Atmospheric Administration (<strong>NOAA</strong>)<br />

National Environmental Satellite, Data & Information Service<br />

National Geophysical Data Center<br />

David Skaggs Research Center, Boulder, Colorado, USA<br />

Mailing Address:<br />

National Geophysical Data Center<br />

325 Broadway, E/GC2<br />

Boulder, CO 80305-3328 USA<br />

Phone: 303-497-6826<br />

Fax: 303-497-6513<br />

TDD: 303-497-6958<br />

Email: ngdc.info@noaa.gov<br />

http://www.ngdc.noaa.gov/<br />

NGDC Online Store and products:<br />

http://www.ngdc.noaa.gov/products/<br />

Space Weather data ordering information:<br />

Phone: 303-497-6761<br />

Email: Craig.A.Clark@noaa.gov<br />

Space Weather technical contact:<br />

Phone: 303-497-6346<br />

Email: Eric.A.Kihn@noaa.gov<br />

http://spidr.ngdc.noaa.gov<br />

http://sgd.ngdc.noaa.gov<br />

http://sxi.ngdc.noaa.gov<br />

<strong>NOAA</strong> Satellites and Information<br />

http://www.<strong>nesdis</strong>.noaa.gov<br />

Space<br />

Weather Data<br />

available from the<br />

National Geophysical<br />

Data Center