Long-term monitoring of layering of lower atmosphere in urban environments by ceilometer

Klaus Schäfer; Stefan Emeis; Carsten Jahn; Christoph Münkel; Caroline Münsterer; Ulas Im

doi:10.1117/12.738840

25 October 2007 Long-term monitoring of layering of lower atmosphere in urban environments by ceilometer

Klaus Schäfer, Stefan Emeis, Carsten Jahn, Christoph Münkel, Caroline Münsterer, Ulas Im

Proceedings Volume 6745, Remote Sensing of Clouds and the Atmosphere XII; 67450W (2007) https://doi.org/10.1117/12.738840
Event: SPIE Remote Sensing, 2007, Florence, Italy

Abstract

Automatic monitoring of lower atmosphere layering was performed by continuous remote sensing measurements with ceilometer and sodar in Augsburg. The Vaisala ceilometers LD40 and CL31 were used which are eye-safe commercial lidar systems. Special software for these ceilometers provides routine retrievals of lower atmosphere layering from vertical profiles of laser backscatter data. A comparison was performed with parallel monitoring of the layering by acoustic remote sensing (sodar). From the acoustic and optical remote sensing data the following features are analysed. The sodar measurements provide the height of a turbulent layer characterized by high acoustic backscatter intensities due to thermal fluctuations and a high variance of the vertical velocity component. The ceilometer measurements add information about the range-dependent aerosol concentration; gradient minima within this profile mark the borders of mixed layers. Different examples of meteorological conditions will be discussed to demonstrate the possibilities of atmospheric layering retrieval.

Citation Download Citation

Klaus Schäfer, Stefan Emeis, Carsten Jahn, Christoph Münkel, Caroline Münsterer, and Ulas Im "Long-term monitoring of layering of lower atmosphere in urban environments by ceilometer", Proc. SPIE 6745, Remote Sensing of Clouds and the Atmosphere XII, 67450W (25 October 2007); https://doi.org/10.1117/12.738840

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