Science Keywords>SUN-EARTH INTERACTIONS>SOLAR ENERGETIC PARTICLE PROPERTIES
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Aurorae Data Entry ID: gov.noaa.ngdc.G00594 |
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Summary
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Abstract:
ABSTRACT: An aurora involves emitted electromagnetic radiation that results primarily from the interaction of energetic, extra-atmospheric particles with the neutral gases of the upper atmosphere. These emissions extend from the ultraviolet to the infrared. The portion of the emitted electromagnetic radiation that is visible to the human eye is referred to as the visual aurora. One visible aurora form, which indicates the occurrence or non-occurrence of auroras without any reference to form or brightness, is known as a visoplot. With geomagnetic latitude as ordinate and universal time as abscissa, various symbols are used to indicate whether, at a certain location, an aurora is observed or is estimated to be overhead, to the north, or to the south. This is done for each of eight 45 degree geomagnetic longitude sectors. Magnetic activity index values, KP, are given for 3-hour periods. Northern and southern hemisphere visoplots for the IGY period are contained in volume 29 of the annals of the International Geophysical Year. Another form that shows the auroral geometry and the geomagnetic latitude and longitude of a display at each hour of universal time is the synoptic auroral map on polar projection. By use of various symbols, these maps show the location of veils, patches, arcs. rays and bands. Also given is the value of KP for that particular time. These maps are available on microfilm from the National Geophysical Data Center or World Data Center A, Boulder, for certain time periods. Northern hemisphere maps are available for 1964, 1965, 1967 and 1968. Southern hemisphere maps can be obtained for the years 1964 and 1965. A similar form for displaying auroral data from the US and Canada is the North American map. This type of map is not on polar projection, but it does indicate the locations and forms of observed aurora. A large number of these maps are held at NGDC Boulder and the available time periods can be obtained upon inquiry. "Observers' reports are also available in digital form.Aurora is electromagnetic radiation emitted primarily from the interaction of energetic, extra-atmospheric particles with the neutral gases of the upper atmosphere. These emissions extend from the ultraviolet to the infrared. The portion of the emitted electromagnetic radiation that is visible to the human eye is referred to as the visual aurora. The visible aurora are due primarily to the interaction of energetic particles with the oxygen and nitrogen gases of the upper atmosphere. The important emissions in the visible region are the discrete green (5577A) and red (6300-6364A) lines of atomic oxygen and the molecular bands of ionized molecular nitrogen in the blue and neutral molecular nitrogen in the red regions of the spectrum. SUPPLEMENTAL INFORMATION: This archive includes data from:Inventory of Aurorae data -- pages from Report UAG-30 Catalogue of Data on Solar-Terrestrial PhysicsTable of Contents -- Report UAG-28 Collected Data Reports on Aug 1972 Solar-Terrestrial EventsSolar Activity, Aurorae and Climate in Central Europe in the last 1000 Years by L. Krivsky and K. Pejml (1988) and "Supplement of the Catalogue of Polar Aurorae less than 55N in the Period 1000-1900" CURRENTNESS REFERENCE: Ground Condition DATA SET CREATORS: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (comp.)WDC/STP, BOULDER > World Data Center for Solar-Terrestrial Physics, Boulder FEES: Free download $25.00 plus handling and shipping outside the USA $25.00 plus handling and shipping outside the USA Purpose: PURPOSE: To provide long-term scientific data stewardship for the Nation's geophysical data, ensuring quality, integrity, and accessibility. |
Related URL
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Link:
GET DATA
Description: Index of ftp downloadable data Link: VIEW EXTENDED METADATA Description: View Source Metadata document from the Metadata Manager and Repository (NMMR). Link: VIEW RELATED INFORMATION Description: Home page where data may be downloaded from |
Geographic Coverage
| N: 90.0 | S: -90.0 | E: 180.0 | W: -180.0 |
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Data Set Citation
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Dataset Originator/Creator:
Please See Summary
Dataset Title: Aurorae Data Dataset Release Date: 1957 Dataset Release Place: Boulder, CO Dataset Publisher: National Geophysical Data Center Version: First Other Citation Details: http://www.ngdc.noaa.gov/stp/SOLAR/ftpaurorae.html Online Resource: ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/AURORAE |
Temporal Coverage
| Start Date: 1957-01-01 |
| Stop Date: 1984-11-20 |
Location Keywords
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SPACE
> EARTH MAGNETIC FIELD
> MAGNETOSPHERE (OTHER)
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Science Keywords
| SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >AURORAE [Definition] |
| SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE PROPERTIES >ENERGY DEPOSITION [Definition] |
ISO Topic Category
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GEOSCIENTIFIC INFORMATION
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Project
| ESIP >Earth Science Information Partners Program [Information] |
Access Constraints
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ACCESS CONSTRAINTS: No Constraints 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. CUSTOM ORDER PROCESS: Contact data center for information |
Use Constraints
| None |
Keywords
| WDC/STP, BOULDER > World Data Center for Solar-Terrestrial Physics, Boulder |
| DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce |
Data Set Progress
| COMPLETE |
Data Center
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National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
[Information]
Data Center URL: http://www.ngdc.noaa.gov/ Dataset ID: ______Downloadable_Data ____
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Distribution
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Distribution_Size:
55.20
Distribution_Format: ASCII Fees: Please See Summary |
Personnel
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EDWARD
H.
ERWIN Role: TECHNICAL CONTACT Role: DIF AUTHOR Phone: (303) 497-6133 Fax: (303) 497-6513 Email: Edward.H.Erwin at noaa.gov Contact Address: NOAA/NESDIS/NGDC E/GC2 325 Broadway City: Boulder Province or State: CO Postal Code: 80303 Country: USA |
Creation and Review Dates
DIF Creation Date:
2009-06-15
Last DIF Revision Date:
2011-03-02
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