Stability and height dependant variations of the structure function parameters in the lower atmospheric boundary layer investigated from measurements of the long-term experiment VERTURM (vertical turbulence measurements)

Detlev Sprung; Peter Grossmann; Erik Sucher; Karin Weiss-Wrana; Karin Stein

doi:10.1117/12.897720

10 October 2011 Stability and height dependant variations of the structure function parameters in the lower atmospheric boundary layer investigated from measurements of the long-term experiment VERTURM (vertical turbulence measurements)

Detlev Sprung, Peter Grossmann, Erik Sucher, Karin Weiss-Wrana, Karin Stein

Author Affiliations +

Proceedings Volume 8178, Optics in Atmospheric Propagation and Adaptive Systems XIV; 817809 (2011) https://doi.org/10.1117/12.897720
Event: SPIE Remote Sensing, 2011, Prague, Czech Republic

Abstract

Operation and design of electro-optical systems are affected by atmospheric optical turbulence quantified by the refractive index parameter C_n². Regarding wave propagation in the visible and infrared (IR), C_n² is a function of height, dependant on temperature, pressure, and the structure temperature function parameter C_n². The long-term experiment VerTurM (vertical turbulence measurements) was designed to characterize the vertical variations of optical turbulence up to 250 m in the lower atmospheric boundary layer for a moderate typical central European climate. Since May 2009 three independent measurement systems have been operated in a flat pasture site in north-western Germany. In the atmospheric surface layer at a tall tower sonic anemometer measurements are performed on four discrete heights between 4 and 64 m providing information about atmospheric stability and turbulence. C_n² is derived. From 30 to 250 m a SODAR-RASS system (Sound Detection and Ranging - Radio acoustic sounding system) yields every half an hour profiles of C_n². Additional direct measurements of C_n² have been performed near the ground using a scintillometer. First results of the three measurement systems are presented. Vertical profiles and stability dependence are analysed in respect of Monin- Obukhov-similarity theory (MOST). Differences in the measurement systems and the expected height variations are discussed.

Citation Download Citation

Detlev Sprung, Peter Grossmann, Erik Sucher, Karin Weiss-Wrana, and Karin Stein "Stability and height dependant variations of the structure function parameters in the lower atmospheric boundary layer investigated from measurements of the long-term experiment VERTURM (vertical turbulence measurements)", Proc. SPIE 8178, Optics in Atmospheric Propagation and Adaptive Systems XIV, 817809 (10 October 2011); https://doi.org/10.1117/12.897720

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available