Earth Magnetic Field, Energetic Particle and Solar X-Ray Flux Levels Measured by GOES Satellites

Metadata from the NOAA Metadata Manager's Repository (NMMR)

• Identification_Information
• Data_Quality_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:National Geophysical Data Center (comp)

Publication_Date:2004

Title:

Earth Magnetic Field, Energetic Particle and Solar X-Ray Flux Levels Measured by GOES Satellites

Geospatial_Data_Presentation_Form:tabular digital data

Publication_Information:

Publication_Place:Boulder, CO

Publisher:National Geophysical Data Center

Online_Linkage:http://spidr.ngdc.noaa.gov

Description:

Abstract:

The National Geophysical Data Center maintains an active database of Earth magnetic field, energetic particle and solar X-ray flux levels measured by GOES satellites to further the understanding of Earth magnetism and the Sun-Earth environment. The data are collected by sensors on the GOES geostationary satellites (6.6RE) over the Earth's equator. Usually there are two satellites recording similar data at all possible times. One is the 'Western' satellite nominally located at 135 degrees west longitude. The other is the 'Eastern' satellite at around 75 degrees west longitude. The database contains 5-minute and 1-minute averages of the X-rays, energetic particles, and magnetic field data collected by GOES satellites since January 1986. The data are transmitted via direct telemetry to the Space Environment Center (SEC) in Boulder, Colorado where they are use in real-time alerts and space weather forecasts. At the end of each month these data are transferred to the Solar-Terrestrial Physics Division of the National Geophysical Data Center, an organization known internationally as World Data Center A for Solar-Terrestrial Physics. A twin-fluxgate spinning sensor on board teh sattelite allows Earth's magnetic field to be described by three mutually perpendicular components: Hp, He and Hn. Hp is parallel to the satellite spin axis, which is itself perpendicular to the satellite's orbital plane. He lies parallel to the satellite-Earth center line and points earthward. Hn is perpendicular to both Hp and He, and points westward for SMS-1, SMS-2, GOES-1, GOES-2, GOES-3, and GOES-4, and eastward for later spacecraft. He and Hn are deconvoluted from the transverse component Ht. Field strength changes as small as 0.2 nanoTesla can be measured. The magnetometer samples the field every 0.75 seconds. Solid-state detectors with pulse-height discrimination on board the satellite measure proton, alpha-particle, and electron fluxes. The look direction of the EPS (Energetic Particle Sensor) is perpendicular to the GOES spin axis which is approximately aligned with Earth's rotation axis. Since the satellite spin period, 0.6 seconds, is much shorter than the accumulation times, the EPS provides a spin-averaged estimate of the local high-pitch-angle particle fluxes. The integral electron channel is given in units of count/cm2 sec sr while the other channels are given in count/cm2 sec sr MeV at the average energy. Because GOES spacecraft travel in a geostationary orbit, the E1 and P1 channels are responding primarily to trapped outer-zone particles. The P2 channel may occasionally respond to trapped particles during magnetically disturbed conditions. The geomagnetic cutoff at geostationary orbit is typically of the order of a few MeV as indicated by the lack of trapped P2 response except as noted above. Therefore, the remaining proton and alpha particle channels measure fluxes originating outside the magnetosphere - from the Sun or the heart of the Galaxy. Solar X-ray flux levels, as measured on board the satellite by the space environment monitor system (SEMS), are at two wavelength bands XL: 1-8A and XS: 0.5-4A 'long and short' wavelengths, respectively. They are recorded in units of watts per square meter. These wavelengths provide extremely sensitive full disk measurements and are critical for detection of solar flares. They also are used directly for computing D-region sudden ionospheric disturbances (SID) and short-wave fadeouts (SWF). Counts are made every 3.6 seconds.

Purpose:

Provide information for research and surveyors

Supplemental_Information:

Formally FE 17, 119, 626. Entry_ID G01152

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date:19860101

Ending_Date:Present

Currentness_Reference:

Publication Date

Status:

Progress:In Work

Maintenance_and_Update_Frequency:Monthly

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate:-180.000000

East_Bounding_Coordinate:180.000000

North_Bounding_Coordinate:90.000000

South_Bounding_Coordinate:-90.000000

Keywords:

Theme:

Theme_Keyword_Thesaurus:GCMD Earth Science Services Keywords

Theme_Keyword:EARTH SCIENCE SERVICES > Data Analysis And Visualization > Visualization/Image Processing

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Archiving

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Cataloging

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Data Compression

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Data Delivery

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Data Interoperability > Data Reformatting

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Data Interoperability

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Data Mining

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Data Search And Retrieval

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Media Transfer/Data Rescue

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Subsetting/Supersetting

Theme_Keyword:EARTH SCIENCE SERVICES > Data Handling > Transformation/Conversion

Theme_Keyword:EARTH SCIENCE SERVICES > Environmental Advisories > Space Weather Advisories

Theme_Keyword:EARTH SCIENCE SERVICES > Environmental Advisories > Space Weather Advisories > Solar Flares

Theme_Keyword:EARTH SCIENCE SERVICES > Environmental Advisories > Space Weather Advisories > Solar Radiation Storms

Theme_Keyword:EARTH SCIENCE SERVICES > Environmental Advisories > Space Weather Advisories > Radio Blackouts

Theme_Keyword:EARTH SCIENCE SERVICES > Environmental Advisories > Space Weather Advisories > Geomagnetic Storm

Theme_Keyword:EARTH SCIENCE SERVICES > Metadata Handling > Data Discovery

Theme_Keyword:EARTH SCIENCE SERVICES > Metadata Handling > Metadata Transformation/Conversion

Theme_Keyword:EARTH SCIENCE SERVICES > Metadata Handling > Service Discovery

Theme:

Theme_Keyword_Thesaurus:GCMD Science Keywords

Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Energetic Particles

Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Particle Flux

Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Alpha Particles

Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Electron Flux

Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Proton Flux

Theme_Keyword:EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Field

Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Solar Activity > Solar X-rays

Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Solar Activity > Solar Flares

Theme:

Theme_Keyword_Thesaurus:GCMD Platform Keywords

Theme_Keyword:GOES > NOAA Geostationary Operational Environmental Satellites

Theme_Keyword:GOES-5 > Geostationary Operational Environmental Satellite 5

Theme_Keyword:GOES-6 > Geostationary Operational Environmental Satellite 6

Theme_Keyword:GOES-7 > Geostationary Operational Environmental Satellite 7

Theme_Keyword:GOES-8 > Geostationary Operational Environmental Satellite 8

Theme_Keyword:GOES-9 > Geostationary Operational Environmental Satellite 9

Theme_Keyword:GOES-10 > Geostationary Operational Environmental Satellite 10

Theme_Keyword:GOES-11 > Geostationary Operational Environmental Satellite 11

Theme_Keyword:GOES-12 > Geostationary Operational Environmental Satellite 12

Theme:

Theme_Keyword_Thesaurus:GCMD Instrument Keywords

Theme_Keyword:SEM > Space Environment Monitor

Theme:

Theme_Keyword_Thesaurus:Uncontrolled Keywords

Theme_Keyword:Short-wave fadeouts

Theme_Keyword:SWF

Theme_Keyword:Sudden ionospheric disturbances

Theme_Keyword:SID

Place:

Place_Keyword_Thesaurus:GCMD Location Keywords

Place_Keyword:Global

Access_Constraints:No Constraints

Use_Constraints:

None

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce

Contact_Person:Daniel C. Wilkinson

Contact_Address:

Address_Type:Mailing and Physical Address

Address:

NOAA/NESDIS/NGDC E/GC1 325 Broadway

City:Boulder

State_or_Province:CO

Postal_Code:80305-3328

Country:USA

Contact_Voice_Telephone:(303) 497-6137

Contact_Facsimile_Telephone:(303) 497-6513

Contact_Electronic_Mail_Address:Daniel.A.Wilkinson@noaa.gov

Hours_of_Service:7:30 - 5:00 Mountain

Contact Instructions:

Contact Data Center

Data_Quality_Information:

Logical_Consistency_Report:

Completeness_Report:

Lineage:

Process_Step:

Process_Description:

Process_Date:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce

Contact_Person:Eric A. Kihn

Contact_Address:

Address_Type:Mailing and Physical Address

Address:

NOAA/NESDIS/NGDC E/GC1 325 Broadway

City:Boulder

State_or_Province:CO

Postal_Code:80305-3328

Country:USA

Contact_Voice_Telephone:(303) 497-6349

Contact_Facsimile_Telephone:(303) 497-6513

Contact_Electronic_Mail_Address:Eric.A.Kihn@noaa.gov

Hours_of_Service:7:30 - 5:00 Mountain

Contact Instructions:

Contact Data Center

Resource_Description:GEOMAGNETICS

Distribution_Liability:

While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name:ASCII

File_Decompression_Technique:ZIP archive

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:http://spidr.ngdc.noaa.gov

Network_Resource_Name:http://clust1.wdcb.ru/spidr

Fees:Free of charge

Custom_Order_Process:

Contact Data Center

Technical_Prerequisites:

Contact Data Center

Metadata_Reference_Information:

Metadata_Date:20040610

Metadata_Review_Date:20040610

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce

Contact_Person:Eric A. Kihn

Contact_Address:

Address_Type:Mailing and Physical Address

Address:

NOAA/NESDIS/NGDC E/GC1 325 Broadway

City:Boulder

State_or_Province:CO

Postal_Code:80305-3328

Country:USA

Contact_Voice_Telephone:(303) 497-6349

Contact_Facsimile_Telephone:(303) 497-6513

Contact_Electronic_Mail_Address:EricA.Kihn@noaa.gov

Hours_of_Service:7:30 - 5:00 Mountain

Contact Instructions:

Contact Data Center

Metadata_Standard_Name:Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version:FGDC-STD-001-1998