Showing papers on "Atmospheric lidar published in 1983"

Solar-Blind Raman Lidar.

Abstract: : This document describes the progress of the NADC Atmospheric Lidar Program funded by the Naval Environmental Prediction Research Facility, Monterey, California, under Program Element 62759N, Project F52553 The objective of this effort is to theoretically determine and experimentally verify the ability of a solar-blind lidar system to remotely measure profiles of atmospheric properties critical to naval operations The properties chosen for investigation are water vapor concentration, temperature and transmission; with the acquisition of water vapor profiles as the primary goal The theoretical feasibility studies have been thoroughly documented via publication in a professional journal, a technical report and a text on atmospheric water vapor In addition, experimental results using a KrF excimer laser were presented at the winter 1983 topical meeting of the Optical Society of America These results are presented in this document

LIDAR remote sensing techniques for regulatory compliance of plume opacity

Abstract: Atmospheric LIDAR (LIght Detection And Ranging) techniques have been used to measure the opacity of visible particulate emissions from stationary industrial sources. Approved by the U.S. Environmental Protection Agency (EPA) as Alternate Method 1 to Reference Method 9 under authority of the Clean Air Act, lidar provides an alternative to the use of visual emissions observers. Under Reference Method 9, trained observers visually determine the opacity of emissions from stationary sources. Lidar works on the principle of monitoring the intensity of laser energy returns after their interaction with an air mass of interest. The considerations that supported development and approval of the LIDAR method as an alternate to the visual observer include the following: independence from ambient lighting conditions which allows opacity measurement during day and nighttime hours; objective measurement of a physical property (opacity) which is calibrated and correlated with the reference method; remote operation which neither interferes with nor disrupts facility operations; and application of statistical techniques to assure high confidence levels in the data used for compliance determination.