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Ionospheric Database

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

Identification_Information:
Citation:
Citation_Information:
Originator:National Geophysical Data Center (comp)
Publication_Date:2004
Title:
Ionospheric Database
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 ionosphere is that part of the upper atmosphere where free electrons occur in sufficient density to have an appreciable influence on the propagation of radio frequency electromagnetic waves. This ionization depends primarily on the Sun and its activity. Ionospheric structures and peak densities in the ionosphere vary greatly with time (sunspot cycle, seasonally, and diurnally), with geographical location (polar, auroral zones, mid-latitudes, and equatorial regions), and with certain solar-related ionospheric disturbances. The major part of the ionization is produced by solar X-ray andultraviolet radiation and by corpuscular radiation from the Sun. The most noticeable effect is seen as the Earth rotates with respect to the Sun; ionization increases in the sunlit atmosphere and decreases on the shadowed side. Although the Sun is the largest contributor toward the ionization, cosmic rays make a small contribution. Any atmospheric disturbance effects the distribution of the ionization. The ionosphere is a dynamic system controlled by many parameters including acoustic motions of the atmosphere, electromagnetic emissions, and variations in the geomagnetic field. Because of its extreme sensitivity to atmospheric changes, the ionosphere is a very sensitive monitor of atmospheric events. In some circles it is thought that there is persuasive evidence of an ionospheric precursor to large earthquakes that can be used a predictor. Besides the obvious acoustic waves generated before and during an earthquake, a part of the preparation process of large earthquakes is the generation of electromagnetic emissions (EMEs). These EMEs have been detected in the ionosphere up to six days prior to a large earthquake, such as with the May 1960, Chilean 8.3 earthquake. The most accurate way of measuring the ionosphere is with a ground-based ionosonde, which records data as ionograms. Usually Ionograms are recorded with 15 min or 1 hr time step. The first ionograms in our database are dated by Jan, 1942.
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:19420101
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 > Aurora Forecasts
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_Keyword:
Theme:
Theme_Keyword_Thesaurus:GCMD Science Keywords
Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Aurorae
Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Particle Composition
Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Particle Density
Theme_Keyword:EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles > Particle Temperature
Theme:
Theme_Keyword_Thesaurus:GCMD Platform Keywords
Theme_Keyword:OBSERVATORIES
Theme:
Theme_Keyword_Thesaurus:GCMD Instrument Keywords
Theme_Keyword:IONOSONDE
Theme:
Theme_Keyword_Thesaurus:Uncontrolled Keywords
Theme_Keyword:Ionogram
Theme_Keyword:F1 layer
Theme_Keyword:F2 layer
Theme_Keyword:E layer
Theme_Keyword:Es layer
Place:
Place_Keyword_Thesaurus:GCMD Location Keywords
Place_Keyword:Global
Place:
Place_Keyword_Thesaurus:GCMD Location Keywords
Place_Keyword:Ionosphere
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: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) 497-6137
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
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Data_Quality_Information:
Logical_Consistency_Report:
Completeness_Report:
Lineage:
Process_Step:
Process_Description:
Process_Date:
Back to Top
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:SOLAR-TERRESTRIAL PHYSICS
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
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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
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Metadata stylesheets are provided courtesy of ESRI. Copyright (c) 2000-2002, Environmental Systems Research Institute, Inc. All rights reserved.

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