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| Titel |
Observing desert dust devils with a pressure logger |
| VerfasserIn |
R. D. Lorenz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2193-0856
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Instrumentation, Methods and Data Systems ; 1, no. 2 ; Nr. 1, no. 2 (2012-12-04), S.209-220 |
| Datensatznummer |
250000172
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| Publikation (Nr.) |
 copernicus.org/gi-1-209-2012.pdf |
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| Zusammenfassung |
| A commercial pressure logger has been adapted for long-term field use. Its
flash memory affords the large data volume to allow months of pressure
measurements to be acquired at the rapid cadence (>1 Hz) required
to detect dust devils, small dust-laden convective vortices observed in arid
regions. The power consumption of the unit is studied and battery and
solar/battery options evaluated for long-term observations. A two-month long
field test is described, and several example dust devil encounters are
examined. In addition, a periodic (~20 min) convective
signature is observed, and some lessons in operations and correction of data
for temperature drift are reported. The unit shows promise for obtaining
good statistics on dust devil pressure drops, to permit comparison with Mars
lander measurements, and for array measurements. |
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