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The effect of long term atmospheric trends on infrasound propagation and absorption

Streicher, Florian and Wüst, Sabine and Bittner, Michael (2014) The effect of long term atmospheric trends on infrasound propagation and absorption. EGU 2014, 27 April – 02 Mai 2014, Wien, Österreich.

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Infrasound is very low frequency sound. Its propagation through the atmosphere, as well as its absorption, amongst others is dependent on temperature. Changes in temperature, as observed within the framework of climate change, therefore cause a change in propagation and dissipation. Climate change is present in the whole atmosphere from the ground to the thermosphere. Compared to a warming in the lower atmosphere (troposphere), temperatures are cooling in the middle (strato- & mesosphere) and upper atmosphere (thermosphere). In addition, the effect generally is increasing with height, resulting in cooling rates of several tens of degrees in the upper thermosphere. The ray tracing model HARPA/DLR is used to study the effects of changing temperatures, as they are reported in literature from troposphere to thermosphere, on infrasound propagation and absorption. The results are discussed in consideration of uncertainties of atmospheric conditions.

Item URL in elib:https://elib.dlr.de/100453/
Document Type:Conference or Workshop Item (Speech)
Title:The effect of long term atmospheric trends on infrasound propagation and absorption
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Streicher, FlorianDLRUNSPECIFIED
Wüst, Sabinesabine.wuest (at) dlr.deUNSPECIFIED
Bittner, Michaelmichael.bittner (at) dlr.deUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Infrasound; Long-term atmospheric trends; Propagation Modeling
Event Title:EGU 2014
Event Location:Wien, Österreich
Event Type:international Conference
Event Dates:27 April – 02 Mai 2014
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):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Atmosphere
Deposited By: Streicher, Florian
Deposited On:07 Dec 2015 14:36
Last Modified:10 May 2016 23:37

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