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| Titel |
Determining the temporal variability in atmospheric temperature profiles measured using radiosondes and assessment of correction factors for different launch schedules |
| VerfasserIn |
D. Butterfield, T. Gardiner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 1 ; Nr. 8, no. 1 (2015-01-29), S.463-470 |
| Datensatznummer |
250116067
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| Publikation (Nr.) |
 copernicus.org/amt-8-463-2015.pdf |
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| Zusammenfassung |
| Radiosondes provide one of the primary sources of upper troposphere and
stratosphere temperature data for numerical weather prediction, the
assessment of long-term trends in atmospheric temperature, study of
atmospheric processes and provide intercomparison data for other temperature
sensors, e.g. satellites. When intercomparing different temperature profiles
it is important to include the effect of temporal mismatch between the
measurements. To help quantify this uncertainty the atmospheric temperature
variation through the day needs to be assessed, so that a correction and
uncertainty for time difference can be calculated. Temperature data from an
intensive radiosonde campaign, at Manus Island in Papua New Guinea, were
analysed to calculate the hourly rate of change in temperature at different
altitudes and provide recommendations and correction factors for different
launch schedules. Using these results, three additional longer term data
sets were analysed (Lindenberg 1999 to 2008; Lindenberg 2009 to 2012; and
Southern Great Plains 2006 to 2012) to assess the diurnal variability of
temperature as a function of altitude, time of day and season of the year.
This provides the appropriate estimation of temperature differences for
given temporal separation and the uncertainty associated with them. A
general observation was that 10 or more repeat measurements would be
required to get a standard error of the mean of less than 0.1 K per hour of
temporal mismatch. |
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