Geomagnetic Storm Sudden Commencements
Storm Sudden Commencements (ssc) 1868 to present: STORM1 and STORM2 Lists: (Some text
here is taken from the International Association of Geomagnetism and Aeronomy (IAGA)
Bulletin 39) 1868-1967 data (STORM1.SSC) are from IAGA Bulletin 33. These data are
based on 3 observatories. Only one of them was at low latitude; the other two, with
an invariant magnetic latitude of 50 degrees, were strongly sensitive to the auroral
effect. 1968-1975 data (STORM2.SSC) are
from IAGA Bulletin 39. These data are much more reliable. The monthly reports from all observatories guarantee that very few events are omitted. With the examination of five low-latitude records, the changes of rhythm could be evaluated much better, and events were kept of rejected on a more rational basis. However, it is probable that, for statistical use, both lists will be relatively homogeneous. Indeed, Alibag was the low-latitude observatory of the 100-year list and
belongs, in the 1968-1975 list, to the group form which the amplitudes are close to the average of five observatories. 1976-1982 data are from IAGA Bulletin 32 series. These data are reduced in the same manner as the 1968-1975 data. 1983-present data are from the monthly ISGI Bulletins (DeBilt, Netherlands - 1983-1987 data; Institut de Physique du Globe, Paris, France - 1988-present data.
from IAGA Bulletin 39. These data are much more reliable. The monthly reports from all observatories guarantee that very few events are omitted. With the examination of five low-latitude records, the changes of rhythm could be evaluated much better, and events were kept of rejected on a more rational basis. However, it is probable that, for statistical use, both lists will be relatively homogeneous. Indeed, Alibag was the low-latitude observatory of the 100-year list and
belongs, in the 1968-1975 list, to the group form which the amplitudes are close to the average of five observatories. 1976-1982 data are from IAGA Bulletin 32 series. These data are reduced in the same manner as the 1968-1975 data. 1983-present data are from the monthly ISGI Bulletins (DeBilt, Netherlands - 1983-1987 data; Institut de Physique du Globe, Paris, France - 1988-present data.
Cite this dataset when used as a source.
- ID not available.
gov.noaa.ngdc.stp.geomag:G01184
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Ordering Instructions | Ordering Instructions: Download data from the ftp site Custom Order Process: Contact data center for information |
Distributor | Justin Mabie Space and Terrestrial Weather Specialist DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6135 Justin.Mabie@noaa.gov |
Dataset Point of Contact | Justin Mabie Space and Terrestrial Weather Specialist DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6135 Justin.Mabie@noaa.gov |
Time Period | 1968-01-01 to Present |
Spatial Bounding Box Coordinates |
West:-180.000000
East:180.000000
South:-90.000000
North:90.000000
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Spatial Coverage Map |
General Documentation |
Publication Dates |
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Edition | First |
Dataset Progress Status | Under development - data is currently in the process of being created |
Data Update Frequency | Monthly |
Purpose | Monitor Geomagnetic Activity Caused by Solar Wind |
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Theme keywords | NASA/GCMD Earth Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Place keywords | NASA/GCMD Location Keywords
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Project keywords | Global Change Master Directory (GCMD) Project Keywords
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Last Modified: 2015-09-18
For questions about the information on this page, please email:Justin.Mabie@noaa.gov