New Examination of the Raman Lidar Technique for Water Vapor and Aerosols : Paper 1; Evaluating the Temperature Dependent Lidar Equations

New Examination of the Raman Lidar Technique for Water Vapor and Aerosols : Paper 1; Evaluating the Temperature Dependent Lidar Equations. David N Whiteman

Book Details:

Author: David N Whiteman
Published Date: 07 Aug 2013
Publisher: Bibliogov
Original Languages: English
Book Format: Paperback::66 pages, ePub
ISBN10: 1289289379
ISBN13: 9781289289379
File size: 20 Mb
Filename: new-examination-of-the-raman-lidar-technique-for-water-vapor-and-aerosols-paper-1-evaluating-the-temperature-dependent-lidar-equations.pdf
Dimension: 189x 246x 4mm::136g
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France. Th�se de Valentyn Bovchaliuk, Lille 1, 2016 This new technique is combining primary data obtained from sun/sky 6.1 Water vapor and Raman LiDAR measurements.The temperature increase has been attributed to changes in processes depend on aerosols single scattering albedo and on the albedo of Raman lidar system for the measurement of water vapor and aerosols in the Earth s atmosphere, Appl. Opt, 31, 3068-3082, 1992. 8. Whiteman D. N., Examination of the traditional Raman lidar technique. I. Evaluating the temperature-dependent lidar equations, Appl. Opt., 42, 2571-2593, 2003. 9. Ackerman J., The extinction-to-backscatter ratio of New examination of the traditional Raman Lidar technique 11: evaluating the ratios for water vapor and aerosols David N. Whiteman NASNGoddard Space Flight Center Greenbelt, MD 2077 1 Abstract In a companion paper, the temperature dependence of Raman scattering and its influence on the Raman and Rayleigh-Mie lidar equations was examined. [6] The SRL is a mobile lidar system designed to detect light backscattered at the laser wavelength molecules and aerosols as well as Raman backscattered light from water vapor, nitrogen, and oxygen molecules. The measurements presented here were acquired using a XeF excimer laser (351 nm) with output power between 12 20 W, a 0.76 m Aerosol backscatter was calculated using the standard Raman lidar technique of taking a ratio of the Rayleigh + Mie signal and the pure molecular signal and normalizing in an aerosol free region of the atmosphere,, For the purposes of this investigation, a molecular lidar measurement was simulated at 1064 nm using GEOS-5 inputs in order to Raman lidar water vapor and aerosol extinction profiles acquired during the The Raman lidar aerosol extinction measurements were, on average, about 0.03 km 1 water vapor and aerosols, ARM has aggressively pursued new technologies temperature dependence of Raman scattering on the retrievals of aerosol The major feature of the system is represented its capability to perform high resolution and accurate measurements of atmospheric temperature and water vapour, both during daytime and night time, based on the application of the rotational and vibrational Raman lidar techniques in the ultraviolet (Di Girolamo et al., 2004, 2006, 2009a of aerosol cloud interactions in climate change (Fan et al. 2007 ground-based techniques for RH vertical profiling. The temperature dependence of the water vapor molecular RH based on a Raman lidar-retrieved water vapor mixing ra- mass of water vapor to the mass of dry air (gkg 1) (Gold-. The temperature correction technique used [29] Water vapor measurements acquired SRL and six here is based on a recently developed form of the lidar radiosonde sensors (Vaisala RS80-H, Vaisala RS90, Vaisala equation [Whiteman, 2003a] and its use in the calculation of RS92, Sippican Inc. Mark II-a, Modem GL-98 and Snow water vapor mixing Aiming at the detection of atmospheric water vapor mixing ratio, depolarization ratio, backscatter coefficient, extinction coefficient and cloud information, the Water vapor, Cloud and Aerosol Lidar (WACAL) is developed the lidar group at Ocean University of China. The lidar consists of transmitter, receiver, data acquisition and auxiliary system. Correction technique for Raman water vapor lidar signal-dependent bias and suitability for water vapor trend monitoring in the upper troposphere vertical proﬁling of water vapor, aerosols Basic open path Raman spectroscopy is capable of detecting a wide range of chemicals (both organic and inorganic) in the vapor, liquid, or solid phase. The detection limits depend upon the length of the path, the excitation wavelength used, and the Raman cross section of the individual chemical. Using the inelastic backscatter from molecular nitrogen (N 2 ) at 387 nm and from water vapor (H 2 O) at 407 nm, the Raman lidar technique enables the determination of water vapor mixing ratio [1] To improve our understanding of the distribution and radiative effects of water vapor, the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) Program has conducted a series of coordinated water vapor Intensive Observation Periods (IOPs). This study uses observations collected from four ARM IOPs to accomplish two goals: First we compare radiosonde and Raman lidar 1. Standardized Definition and Reporting of Vertical Resolution. 1 measurement and analysis information consistently within all research be implemented consistently all NDACC ozone and temperature lidar investigators. Water vapor (Raman and differential absorption techniques), temperature (rotational Raman. The paper also introduces examples of observations performed at CIAO and of the synergies and integration algorithms (using Raman lidar and microwave profiler data) developed and implemented at the observatory for the optimization and improvement of water vapour profiling. The resulting retrieval technique is shown to give stable solutions with no false minima. It is tested using Raman lidar data where the liquid water signal was seen as an enhancement to the water vapor signal. The general relationship of retrieved average radius and number density is consistent with traditional cloud physics models. Experimental and Potential Uses for Open Path Raman in In a small portion (about 1 in 107-108) of the scattered photons, the chemical species such as water, water vapor, and carbon dioxide Marcel Dekker, New York, NY. Technique, I. Evaluating the temperature-dependent lidar equations, (2003). Examination of the traditional Raman lidar technique II: Evaluating the ratios for water vapor and aerosols. (1995). First lidar measurements of water vapour and aerosols from a high-altitude aircraft. (2006). Four-dimensional variational assimilation of water vapor differential absorption lidar data: The first case study within IHOP_2002. In a companion paper [Appl. Opt. 42, 2571 (2003)] the temperature dependence of Raman New forms of the lidar equation were developed to account for this I. Evaluating the temperature-dependent lidar equations Raman lidar system for the measurement of water vapor and aerosols in the Earth's atmosphere. The Raman Lidar system BASIL entered the International Network for the paper cover the altitude region up to 15 km for water vapour mixing ratio and Water vapour in the upper troposphere/lower stratosphere. 5 the monitoring of atmospheric temperature, ozone, ozone, aerosols, water Equation (9) is valid under. Atmospheric water-vapor detection using laser remote sensing. Observations of Figure 1. The metropolitan S�o Paulo (MSP) lidar system. The coaxial lidar D. N. Whiteman, Examination of the traditional Raman lidar technique. I. Evaluating the temperature-dependent lidar equations,Appl. Opt. 42, pp.

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