Variability of the Brunt–Väisälä frequency at the OH* layer height
In and near the Alpine region, the most dense subnetwork of identical NDMC (Network for the Detection of Mesospheric Change, <a href="https://www.wdc.dlr.de/ndmc/" target="_blank">https://www.wdc.dlr.de/ndmc/</a>) instruments can be found: five stations are equipped...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2017-12-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://www.atmos-meas-tech.net/10/4895/2017/amt-10-4895-2017.pdf |
| Summary: | In and near the Alpine region, the most dense subnetwork of
identical NDMC (Network for the Detection of Mesospheric Change,
<a href="https://www.wdc.dlr.de/ndmc/" target="_blank">https://www.wdc.dlr.de/ndmc/</a>) instruments can be found: five stations are equipped
with OH* spectrometers which deliver a time series of mesopause temperature
for each cloudless or only partially cloudy night. These measurements are
suitable for the derivation of the density of gravity wave potential energy,
provided that the Brunt–Väisälä frequency is known.
<br><br>
However, OH* spectrometers do not deliver vertically resolved temperature
information, which is necessary for the calculation of the
Brunt–Väisälä frequency. Co-located measurements or
climatological values are needed.
<br><br>
We use 14 years of satellite-based temperature data (TIMED-SABER,
2002–2015) to investigate the inter- and intra-annual variability of the
Brunt–Väisälä frequency at the OH* layer height between
43.93–48.09° N and 5.71–12.95° E and provide a
climatology.</p> |
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| ISSN: | 1867-1381 1867-8548 |