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| Titel |
Calibration and validation of the advanced E-Region Wind Interferometer |
| VerfasserIn |
S. K. Kristoffersen, W. E. Ward, S. Brown, J. R. Drummond |
| 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 ; 6, no. 7 ; Nr. 6, no. 7 (2013-07-23), S.1761-1776 |
| Datensatznummer |
250017925
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| Publikation (Nr.) |
 copernicus.org/amt-6-1761-2013.pdf |
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| Zusammenfassung |
| The advanced E-Region Wind Interferometer (ERWIN II) combines the imaging
capabilities of a CCD detector with the wide field associated with field-widened Michelson interferometry. This instrument is capable of simultaneous
multi-directional wind observations for three different airglow emissions
(oxygen green line (O(1S)) at a height of ~97 km, the
PQ(7) and P(7) emission lines in the O2(0–1) atmospheric
band at ~93 km and P1(3) emission line in the (6, 2)
hydroxyl Meinel band at ~87 km) on a three minute cadence. In
each direction, for 45 s measurements for typical airglow volume
emission rates, the instrument is capable of line-of-sight wind precisions of
~1 m s−1 for hydroxyl and O(1S) and ~4 m s−1
for O2. This precision is achieved using a new data analysis algorithm
which takes advantage of the imaging capabilities of the CCD detector along
with knowledge of the instrument phase variation as a function of pixel
location across the detector. This instrument is currently located in
Eureka, Nunavut as part of the Polar Environment Atmospheric Research
Laboratory (PEARL) (80°N, 86° W). The details of the physical configuration,
the data analysis algorithm, the measurement calibration and validation of
the observations from December 2008 and January 2009 are described. Field
measurements which demonstrate the capabilities of this instrument are
presented. To our knowledge, the wind determinations with this instrument
are the most accurate and have the highest observational cadence for airglow
wind observations of this region of the atmosphere and match the
capabilities of other wind-measuring techniques. |
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