Journal ArticleDOI
Differential Absorption Lidar Measurements of Atmospheric Temperature Profiles: Theory and Experiment
Felix A. Theopold,Jens Bösenberg +1 more
TLDR
In this article, the influence of Doppler broadening on the Rayleigh-backscattered signal is evaluated, and a correction method for this effect is presented, which requires an accurate estimate of the molecular and particle backscatter contributions, which is hardly achievable by usual lidar inversion techniques.Abstract:
The method of measuring atmospheric temperature profiles with differential absorption lidar (DIAL), based on the temperature dependence of oxygen absorption lines in the near infrared, is investigated in some detail. Particularly the influence of Doppler broadening on the Rayleigh-backscattered signal is evaluated, and a correction method for this effect is presented. This correction, however, requires an accurate estimate of the molecular- and particle backscatter contributions, which is hardly achievable by usual lidar inversion techniques. Under realistic conditions, resulting errors may be as high as 10 K. First range-resolved measurements using this technique are presented, using a slightly modified DIAL system originally constructed for water vapor measurements. Temperature profiles in the planetary boundary layer are obtained with a resolution of 82 m vertical and 30 min in time, showing an absolute accuracy of 4 K and an error in the temperature gradient of 0.5 K (100 m)−1. While much bet...read more
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Journal ArticleDOI
A review of the remote sensing of lower-tropospheric thermodynamic profiles and its indispensable role for the understanding and the simulation of water and energy cycles
Volker Wulfmeyer,R. Michael Hardesty,David D. Turner,Andreas Behrendt,Maria P. Cadeddu,Paolo Di Girolamo,Peter Schlüssel,Joël Van Baelen,Florian Zus +8 more
TL;DR: In this article, a review of remote sensing technology for lower-tropospheric thermodynamic profiling is presented with focus on high accuracy and high temporal-vertical resolution, and the contributions of these instruments to the understanding of the Earth system are assessed with respect to radiative transfer, land-surface-atmosphere feedback, convection initiation, and data assimilation.
Journal ArticleDOI
Ground-Based Differential Absorption Lidar for Water-Vapor and Temperature Profiling: Methodology
TL;DR: A modification of the DIAL technique, high-spectral-resolution DIAL avoids errors that are due to Doppler-broadened Rayleigh backscatter and permits simultaneous water-vapor and wind measurements with the same system.
Journal ArticleDOI
Relative-humidity profiling in the troposphere with a Raman lidar
Ina Mattis,Albert Ansmann,Dietrich Althausen,Volker Jaenisch,Ulla Wandinger,Detlef Müller,Y. Arshinov,Sergej M Bobrovnikov,Ilya Serikov +8 more
TL;DR: This approach enabled us to acquire, for the first time to the authors' knowledge, vertical profiles of relative humidity through the entire troposphere exclusively from Raman-lidar data.
Journal ArticleDOI
Ground-based remote profiling in atmospheric studies: an overview
TL;DR: In this paper, the authors describe the current status of techniques for vertical profiling of mean wind speeds, temperature, and humidity, and discuss options for combining them and discuss how to combine them.
Book ChapterDOI
Temperature Measurements with Lidar
TL;DR: In this paper, the atmospheric temperature profiles of a model atmosphere or the results of radiosonde soundings (in the free troposphere and lower stratosphere) have usually been taken for this purpose.
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Atmospheric temperature profiling in the presence of clouds with a pure rotational Raman lidar by use of an interference-filter-based polychromator
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