Solar Features - Prominences and Filaments
Prominences and filaments are two manifestations of the same phenomenon. Both prominences
and filaments are features formed above the chromosphere by cool dense gases held
in place by solar magnetic fields. Filaments are observed on the solar disk as dark
structures as seen against the hotter chromosphere whereas prominences on the limb
appear bright against the perspective of outer space. The scale sizes for prominences
and filaments are typically many thousands kilometers. Solar observers typically view
prominences and filaments in Hydrogen alpha (656.3 nm). Filaments are sometimes referred
to as floccule (plural of flocculus). Prominences and filaments can rapidly form over
a period of a day but then typically persist for several weeks and, in some cases,
several months. At breakup the gases within these previously stable structures may
be explosively released into space in the form of a coronal mass ejection (CME). Space
weather operators have and continue to monitor the location and character of prominences
and filaments as potential precursors on near-earth geomagnetic activity. (Browse
image provided courtesy of http://www.greatdreams.com)
Cite this dataset when used as a source.
- solarFeatures [Line 99]
gov.noaa.ngdc.stp.solar:solar-features_prominences-filaments
Distribution Formats |
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Distributor | William Denig DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6323 solar.ngdc@noaa.gov |
Dataset Point of Contact | William Denig DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6323 solar.ngdc@noaa.gov |
Coverage Description | Data assembled from data provided by various solar observatories located worldwide. |
Time Period | 1955-07-01 to 2010-11-24 |
Spatial Bounding Box Coordinates |
West:-180
East:180
South:-90
North:90
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Spatial Coverage Map |
Documentation links not available. |
Publication Dates |
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Dataset Progress Status | Under development - data is currently in the process of being created |
Data Update Frequency | Annually |
Supplemental Information |
Collection consists of various lists and tables related to solar filaments
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Purpose | To provide scientific data stewardship of solar-terrestrial datasets in compliance with NOAA Administrative Order (NAO) 212-15, "Management of Environmental and Geospatial Data and Information", dated 04 Nov 10. Scientific Data Stewardship includes the Archive, Access, and Assessment (AAA) of operational and related solar and space environmental datasets. |
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Acknowledgments |
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Theme keywords | NASA/GCMD Earth Science Keywords; Olsen, L.M., G. Major, K. Shein, J. Scialdone, R.
Vogel, S. Leicester, H. Weir, S. Ritz, T. Stevens, M. Meaux, C.Solomon, R. Bilodeau,
M. Holland, T. Northcutt, R. A. Restrepo, 2007 . NASA/Global Change Master Directory
(GCMD) Earth Science Keywords. Version 6.0.0.0.0.
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Platform keywords | NASA/GCMD Platform Keywords; Olsen, L.M., G. Major, K. Shein, J. Scialdone, R. Vogel,
S. Leicester, H. Weir, S. Ritz, T. Stevens, M. Meaux, C.Solomon, R. Bilodeau, M. Holland,
T. Northcutt, R. A. Restrepo, 2007 . NASA/Global Change Master Directory (GCMD) Earth
Science Keywords. Version 6.0.0.0.0.
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Instrument keywords | NASA/GCMD Instrument Keywords; Olsen, L.M., G. Major, K. Shein, J. Scialdone, R. Vogel,
S. Leicester, H. Weir, S. Ritz, T. Stevens, M. Meaux, C.Solomon, R. Bilodeau, M. Holland,
T. Northcutt, R. A. Restrepo, 2007 . NASA/Global Change Master Directory (GCMD) Earth
Science Keywords. Version 6.0.0.0.0.
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Place keywords | NASA/GCMD Location Keywords; Olsen, L.M., G. Major, K. Shein, J. Scialdone, R. Vogel,
S. Leicester, H. Weir, S. Ritz, T. Stevens, M. Meaux, C.Solomon, R. Bilodeau, M. Holland,
T. Northcutt, R. A. Restrepo, 2007 . NASA/Global Change Master Directory (GCMD) Earth
Science Keywords. Version 6.0.0.0.0.
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Project keywords | Global Change Master Directory (GCMD) Project Keywords
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Lineage Statement | Authoritative data provided by the NOAA National Geophysical Data Center. |
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Last Modified: 2015-10-02
For questions about the information on this page, please email:solar.ngdc@noaa.gov