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Lidar temperature measurements during a rare mid-latitude noctilucent cloud event

Kaifler, Natalie and Kaifler, Bernd and Wilms, Henrike and Rapp, Markus and Stober, G. and Jacobi, Christoph (2017) Lidar temperature measurements during a rare mid-latitude noctilucent cloud event. 13th International Workshop on Layered Phenomena in the Mesopause Region (LPMR), 28.-22. Sep. 2017, Kühlungsborn, Germany. (Unpublished)

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Official URL: https://www.iap-kborn.de/fileadmin/user_upload/Current_issue/Workshops/LPMR2017/data/abstracts/abstract_49.html

Abstract

We present lidar soundings of the only noctilucent cloud event recorded above GERES station in the Bavarian Forest (48.8 N, 13.7 E) during the 2016 season. A single thin NLC layer was observed for several hours at a low mean altitude of 81.1 km. Due to darkness and the high power of the CORAL lidar, Rayleigh temperatures could be obtained between 30 and 86 km altitude, reaching well above the NLC layer. By density interpolation, we estimate temperatures also within the NLC layer. Interestingly, we find high temperatures directly above the NLC layer which is embedded in a cold region extending well below the layer. Using meteor radar data, we argue that the NLC did not nucleate at the site of observation but was meridionally transported from higher latitudes during a 2-day planetary wave event. The NLC was unusally bright given the latitude and during observation, the layer was subject to variations with periods ranging from 11 min to 60 min. We bring small scale variations in NLC centroid altitude and brightness in relation with gravity wave structures inferred from temperature measurements. The lidar measurements reveals that the NLC layer resides in the cold phases of gravity waves passing through the mesosphere, lower thermosphere region.

Item URL in elib:https://elib.dlr.de/114377/
Document Type:Conference or Workshop Item (Speech)
Title:Lidar temperature measurements during a rare mid-latitude noctilucent cloud event
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kaifler, NatalieDLR, IPAhttps://orcid.org/0000-0002-3118-6480
Kaifler, BerndDLR, IPAUNSPECIFIED
Wilms, HenrikeDLR, IPAUNSPECIFIED
Rapp, MarkusDLR, IPAUNSPECIFIED
Stober, G.IAP, KühlungsbornUNSPECIFIED
Jacobi, ChristophIfM, Universität LeipzigUNSPECIFIED
Date:19 September 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:noctilucent clouds, polar mesospheric clouds, mid-latitude, lidar, mesospheric temperature
Event Title:13th International Workshop on Layered Phenomena in the Mesopause Region (LPMR)
Event Location:Kühlungsborn, Germany
Event Type:Workshop
Event Dates:28.-22. Sep. 2017
Organizer:Leibniz-Institut für Atmosphärenphysik, Kühlungsborn
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):Vorhaben Mittlere Atmosphäre
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Kaifler, Dr. Natalie
Deposited On:25 Sep 2017 12:15
Last Modified:31 Jul 2019 20:11

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