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| Titel |
Measurement of solid precipitation with an optical disdrometer |
| VerfasserIn |
G. E. Lempio, K. Bumke, A. Macke |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Observation, Prediction and Verification of Precipitation (EGU Session 2006) ; Nr. 10 (2007-04-26), S.91-97 |
| Datensatznummer |
250007858
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| Publikation (Nr.) |
 copernicus.org/adgeo-10-91-2007.pdf |
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| Zusammenfassung |
A study about measurements of solid precipitation using an optical disdrometer is presented.
The optical disdrometer is an improved version of the ODM 470 disdrometer.
It allows to measure hydrometeors within a size range of 0.4 to 22 mm in diameter.
The main advantage of this instrument is its ability to estimate accurately precipitation
even under strong wind conditions (Großklaus, 1996). To measure solid precipitation a geometrical model was developed to determine the mean cross-sectional area of
snow crystals for different predefined shapes and sizes.
It serves to develop an algorithm, which relates the mean cross sectional area of
snow crystals to their maximum dimension, liquid water content, and terminal velocity.
The algorithm was applied to disdrometer measurements during winter 1999/2000 in
Uppsala/Sweden. Resulting precipitation was compared to independent measurements of a Geonor
gauge and to manual measurements. In terms of daily precipitation the disdrometer shows a reliable
performance. |
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