 |
| Titel |
Temperature lidar measurements from 1 to 105 km altitude using resonance, Rayleigh, and Rotational Raman scattering |
| VerfasserIn |
M. Alpers, R. Eixmann, C. Fricke-Begemann, M. Gerding, J. Höffner |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 4, no. 3 ; Nr. 4, no. 3 (2004-05-24), S.793-800 |
| Datensatznummer |
250001717
|
| Publikation (Nr.) |
 copernicus.org/acp-4-793-2004.pdf |
|
|
|
|
|
| Zusammenfassung |
| For the first time, three different temperature lidar methods are
combined to obtain time-resolved complete temperature profiles
with high altitude resolution over an altitude range from the
planetary boundary layer up to the lower thermosphere (about
1–105 km). The Leibniz-Institute of Atmospheric Physics (IAP) at
Kühlungsborn, Germany (54° N, 12° E)
operates two lidar instruments, using three different temperature
measurement methods, optimized for three altitude ranges:
(1) Probing the spectral Doppler broadening of the potassium
D1 resonance lines with a tunable narrow-band laser allows
atmospheric temperature profiles to be determined at metal layer
altitudes (80–105 km). (2) Between about 20 and 90 km,
temperatures were calculated from Rayleigh backscattering by air
molecules, where the upper start values for the calculation
algorithm were taken from the potassium lidar results. Correction
methods have been applied to account for, e.g. Rayleigh
extinction or Mie scattering of aerosols below about 32 km. (3) At
altitudes below about 25 km, backscattering in the Rotational
Raman lines is strong enough to obtain temperatures by measuring
the temperature dependent spectral shape of the Rotational Raman
spectrum. This method works well down to about 1 km. The
instrumental configurations of the IAP lidars were optimized for a
3–6 km overlap of the temperature profiles at the method
transition altitudes. We present two night-long measurements with
clear wave structures propagating from the lower stratosphere up
to the lower thermosphere. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|