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A High Spectral Resolution Lidar At 532 Nm For Simultaneous Measurement Of Atmospheric State And Aerosol Profiles Using Iodine Vapor Filters
Download A High Spectral Resolution Lidar At 532 Nm For Simultaneous Measurement Of Atmospheric State And Aerosol Profiles Using Iodine Vapor Filters full books in PDF, epub, and Kindle. Read online A High Spectral Resolution Lidar At 532 Nm For Simultaneous Measurement Of Atmospheric State And Aerosol Profiles Using Iodine Vapor Filters ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis A High Spectral Resolution Lidar at 532 Nm for Simultaneous Measurement of Atmospheric State and Aerosol Profiles Using Iodine Vapor Filters by : Johnathan Wayne Hair
Download or read book A High Spectral Resolution Lidar at 532 Nm for Simultaneous Measurement of Atmospheric State and Aerosol Profiles Using Iodine Vapor Filters written by Johnathan Wayne Hair and published by . This book was released on 1998 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atmospheric Lidar Fundamentals by : Chiao-Yao She
Download or read book Atmospheric Lidar Fundamentals written by Chiao-Yao She and published by Cambridge University Press. This book was released on 2022-03-03 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive treatment of the essential physics of light-matter interactions and the fundamentals of atmospheric lidars.
Book Synopsis Nineteenth International Laser Radar Conference by : Upendra N. Singh
Download or read book Nineteenth International Laser Radar Conference written by Upendra N. Singh and published by . This book was released on 1998 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains extended abstracts of papers presented at the Nineteenth International Laser Radar Conference, held at Annapolis, Maryland, July 6-10, 1998; 260 papers were presented in both oral and poster sessions. The topics of the conference sessions were Aerosol Clouds, Multiple Scattering; Tropospheric Profiling, Stratospheric/Mesospheric Profiling; Wind Profiling; New Lidar Technology and Techniques; Lidar Applications, Including Altimetry and Marine; Space and Future Lidar; and Lidar Commercialization/Eye Safety. This conference reflects the breadth of research activities being conducted in the lidar field. These abstracts address subjects from lidar-based atmospheric investigations, development of new lasers and lidar system technology, and current and future space-based lidar systems.
Book Synopsis Climatic Change: Implications for the Hydrological Cycle and for Water Management by : Martin Beniston
Download or read book Climatic Change: Implications for the Hydrological Cycle and for Water Management written by Martin Beniston and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: year simulations in order to separate noise in the system from the climate change signal. Several contributing papers focused on case studies using Regional Climate Models (RCMs) linked to hydrological models, applied to the analysis of runoff under conditions of convective activity and extreme precipitation, in regions of complex topography, or stakeholder-driven investigations such as water runoff simulations in Quebec undertaken for a major utility. Thorough analyses of GCM results for the Century were reported at the Workshop, in order to illustrate the improvements in model results which have taken place in recent years, and the increasing confidence with which the models can be used for projecting climatic change in coming decades. However, there is still much room for improvement; there is also a need to address more fully the manner in which climate and impacts models (e. g. , hydrological models) can be linked, in terms of consistency and the overlap between different scales, the underlying physical assumptions, and the parameterizations used. Session 2 was devoted to the two extremes of water resources, namely floods and droughts, the focus here being to identify the climate change component in river floods. These have significant economic implications, as was shown by several scientists from Western and Central Europe. Many long time series have been studied worldwide with the aim of detection of nonstationarities, yet there is no conclusive evidence of climate-related changes in flow records, in general.
Book Synopsis A High Spectral Resolution Lidar Using an Iodine Vapor Filter at 589nm by : Loren Max Caldwell
Download or read book A High Spectral Resolution Lidar Using an Iodine Vapor Filter at 589nm written by Loren Max Caldwell and published by . This book was released on 1995 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1999 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1998 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A High-Spectral-Resolution Lidar System: The Use of Atomic Blocking Filter for Measuring Atmospheric Parameters by : Chiao-Yao She
Download or read book A High-Spectral-Resolution Lidar System: The Use of Atomic Blocking Filter for Measuring Atmospheric Parameters written by Chiao-Yao She and published by . This book was released on 1988 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project is to develop atomic-vapor absorption cells to be used as blocking filters for a high spectral resolution lidar (HSRL). Experimental assessment of the proposed new high-spectral-resolution lidar technique for backscatter ratio and atmospheric temperature measurements in the troposhere is presented. The feasibility of the proposed concept has been demonstrated by laboratory measurements using a cw tunable laser with an atomic vapor filter constructed for this purpose. The status of current laboratory experiment with pulsed system suggests that field measurement of backscatterer ratio can be made to 1% accuracy. A factor of 10 improvement in the accuracy in determining the molecular attenuation factor resulting from the atomic vapor filter is needed for field temperature measurement with a 1 K accuracy. Keywords: Lidar, High-spectral-resolution, Measurements, Aerosol/molecule backscatter ratio, and Tropospheric temperature. (RH).
Book Synopsis Investigation Into High Spectral Resolution Lidar Technologies by : Martha Dawsey
Download or read book Investigation Into High Spectral Resolution Lidar Technologies written by Martha Dawsey and published by . This book was released on 2013 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) found in their 2007 report that aerosol radiative forcing contributed larger uncertainties to estimates affecting future climate change than any other radiative forcing factor. Lidar is a tool with which this uncertainty can be reduced, increasing our understanding of the impact of aerosols on climate change. Lidar, or laser radar, is a monostatic active remote sensing technique used to measure aerosols and particulates in the atmosphere, with accuracies comparable to in-situ measurements (Russell 2002). High Spectral Resolution Lidar (HSRL) systems use a narrow band filter to spectrally separate Doppler broadened aerosol and molecular back-scattered return signals, which allows for range resolved profiles of aerosol extinction and backscatter. The narrow band filter is a key component, for which two novel approaches are currently being used: NASA Langley Research Center has implemented a wide-angle Michelson interferometer in the second version of their airborne HSRL, and Montana State University is using a spherical Fabry-Perot interferometer in a ground based HSRL. In this research, a comprehensive comparative analysis of these two interferometric filters is performed, the result of which is a methodology for the design of narrow band filters for HSRL systems. The techniques presented identify the critical components and analyze the performance of each filter based on the spectral and angular properties, as well as the efficiency.
Book Synopsis A High Spectral Resolution Lidar Based on an Iodine Absorption Filter by : Päivi Piironen
Download or read book A High Spectral Resolution Lidar Based on an Iodine Absorption Filter written by Päivi Piironen and published by . This book was released on 1994 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Spectral Resolution Lidar System with Atomic Blocking Filters for Measuring Atmospheric Parameters by : H. Shimizu
Download or read book High Spectral Resolution Lidar System with Atomic Blocking Filters for Measuring Atmospheric Parameters written by H. Shimizu and published by . This book was released on 1982 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Tropospheric Temperature and Aerosol Extinction Using High Spectral Resolution Lidar by : Raul John Alvarez
Download or read book Measurement of Tropospheric Temperature and Aerosol Extinction Using High Spectral Resolution Lidar written by Raul John Alvarez and published by . This book was released on 1991 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Spectral Resolution Lidar Data by :
Download or read book High Spectral Resolution Lidar Data written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The HSRL provided calibrated vertical profiles of optical depth, backscatter cross section and depoloarization at a wavelength of 532 nm. Profiles were acquired at 2.5 second intervals with 7.5 meter resolution. Profiles extended from an altitude of 100 m to 30 km in clear air. The lidar penetrated to a maximum optical depth of ~ 4 under cloudy conditions. Our data contributed directly to the aims of the M-PACE experiment, providing calibrated optical depth and optical backscatter measurements which were not available from any other instrument.
Book Synopsis Instrument Development for Atmospheric Research and Monitoring by : Jens Bösenberg
Download or read book Instrument Development for Atmospheric Research and Monitoring written by Jens Bösenberg and published by Springer. This book was released on 2010-12-15 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jens Bosenberg Max-Planck-Institut fur Meteorologie, Bundesstr. 55, D-20146 Hamburg, Germany TESLAS, which stands for Tropospheric Environmental Studies by Laser Sounding, was formed in November 1987 as a subproject of EUROTRAC to enhance the measurement capabilities for vertical profiling of ozone in the troposphere by means of laser remote sensing. For studies of several atmospheric processes related to the formation and redistribution of photo-oxidants there was a clear need for measuring extended time series with appropriate vertical and temporal resolution. These could not be obtained by conventional in situ techniques, at least not with affordable effort, so remote sensing appeared to be the best way to obtain the required information. At the beginning of the subproject, some Differential Absorption Lidar (DIAL) systems for measuring the vertical distribution of ozone already existed, but their use was restricted to very few laboratories and very few measurement campaigns, since the instruments were highly complex, rather unreliable, and required extensive efforts for maintenance and operation by skilled scientists. In addition, the accuracy of these measurements under a variety of meteorological conditions was not really well established. The main tasks within TESLAS therefore were to develop fully the DIAL-methodology for remote sensing of tropospheric ozone, and to develop instruments which are accurate, reliable, easy to operate, and suitable for field deployment or airborne operation.
Book Synopsis Shuttle Atmospheric Lidar Research Program by : United States. Atmospheric Lidar Working Group
Download or read book Shuttle Atmospheric Lidar Research Program written by United States. Atmospheric Lidar Working Group and published by . This book was released on 1979 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Shuttle Atmospheric Lidar Research Program is discussed in relation to an understanding of the processes governing the Earth's atmosphere and in the capacity to evaluate the atmospheric susceptibility to manmade and natural perturbations. Applications discussed are the determination of the global flow of water vapor and pollutants in the troposphere, improvement of chemical and transport models of the stratosphere and mesosphere, evaluation of radiative models of the atmosphere, investigation of chemistry and transport of thermospheric atomic species, and investigation of magnetospheric aspects of sun/weather relationships. The features discussed are the high spatial resolution, control of the source wavelength and intensity, and high measurement specificity.
Book Synopsis Characterizing Aerosol Distributions and Optical Properties Using the NASA Langley High Spectral Resolution Lidar by :
Download or read book Characterizing Aerosol Distributions and Optical Properties Using the NASA Langley High Spectral Resolution Lidar written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project was to provide vertically and horizontally resolved data on aerosol optical properties to assess and ultimately improve how models represent these aerosol properties and their impacts on atmospheric radiation. The approach was to deploy the NASA Langley Airborne High Spectral Resolution Lidar (HSRL) and other synergistic remote sensors on DOE Atmospheric Science Research (ASR) sponsored airborne field campaigns and synergistic field campaigns sponsored by other agencies to remotely measure aerosol backscattering, extinction, and optical thickness profiles. Synergistic sensors included a nadir-viewing digital camera for context imagery, and, later in the project, the NASA Goddard Institute for Space Studies (GISS) Research Scanning Polarimeter (RSP). The information from the remote sensing instruments was used to map the horizontal and vertical distribution of aerosol properties and type. The retrieved lidar parameters include profiles of aerosol extinction, backscatter, depolarization, and optical depth. Products produced in subsequent analyses included aerosol mixed layer height, aerosol type, and the partition of aerosol optical depth by type. The lidar products provided vertical context for in situ and remote sensing measurements from other airborne and ground-based platforms employed in the field campaigns and was used to assess the predictions of transport models. Also, the measurements provide a data base for future evaluation of techniques to combine active (lidar) and passive (polarimeter) measurements in advanced retrieval schemes to remotely characterize aerosol microphysical properties. The project was initiated as a 3-year project starting 1 January 2005. It was later awarded continuation funding for another 3 years (i.e., through 31 December 2010) followed by a 1-year no-cost extension (through 31 December 2011). This project supported logistical and flight costs of the NASA sensors on a dedicated aircraft, the subsequent analysis and archival of the data, and the presentation of results in conferences, workshops, and publications. DOE ASR field campaigns supported under this project included - MAX-Mex /MILAGRO (2006) - TexAQS 2006/GoMACCS (2006) - CHAPS (2007) - RACORO (2009) - CARE/CalNex (2010) In addition, data acquired on HSRL airborne field campaigns sponsored by other agencies were used extensively to fulfill the science objectives of this project and the data acquired have been made available to other DOE ASR investigators upon request.
Book Synopsis Confocal Fabry-Perot Interferometer Based High Spectral Resolution LIDAR by : David Swick Hoffman
Download or read book Confocal Fabry-Perot Interferometer Based High Spectral Resolution LIDAR written by David Swick Hoffman and published by . This book was released on 2012 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high spectral resolution lidar (HSRL), which has been developed at Montana State University, utilizes a confocal Fabry-Perot interferometer (CFP) to separate aerosol and molecular lidar returns for the purpose of atmospheric aerosol observation. The CFP is actively frequency locked to the laser-transmitter via a novel frequency modulation based technique. 532 nm second harmonic light from a frequency doubled Nd:YAG injectionseeded, pulsed laser is directed vertically into the atmosphere. Light backscattered by the atmosphere is collected using a commercial Schmidt-Cassegrain telescope. The secondharmonic return signal is mode matched into a tunable CFP interferometer with a free spectral range of 7.5 GHz and a finesse of 50.7 (312) at 532 nm (1064 nm) placed in the optical receiver for spectrally filtering the molecular and aerosol return signals. The light transmitted through the CFP is used to monitor the aerosol return signal while the light reflected by the CFP is used to monitor the molecular return signal. Data collected with the HSRL are presented and inversion results are compared to those from a co-located solar radiometer, demonstrating the successful operation of the instrument. The HSRL presented in this dissertation provides an important means to study atmospheric aerosols, which are the largest source of uncertainty in current global climate models. Additionally, the novel frequency locking technique allows for the future development of multi-wavelength HSRL instruments, and the robustness of the frequency locked optical filter allows for the deployment of future air and space based HSRL instruments.
