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| Titel |
Missing data and the accuracy of magnetic-observatory hour means |
| VerfasserIn |
J. J. Love |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 9 ; Nr. 27, no. 9 (2009-09-29), S.3601-3610 |
| Datensatznummer |
250016654
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| Publikation (Nr.) |
 copernicus.org/angeo-27-3601-2009.pdf |
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| Zusammenfassung |
| Analysis is made of the accuracy of magnetic-observatory hourly means
constructed from definitive minute data having missing values (gaps).
Bootstrap sampling from different data-gap distributions is used to estimate
average errors on hourly means as a function of the number of missing data.
Absolute and relative error results are calculated for horizontal-intensity,
declination, and vertical-component data collected at high, medium, and low
magnetic latitudes. For 90% complete coverage (10% missing data), average
(RMS) absolute errors on hourly means are generally less than errors
permitted by Intermagnet for minute data. As a rule of thumb, the average
relative error for hourly means with 10% missing minute data is
approximately equal to 10% of the hourly standard deviation of the source
minute data. |
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