Download or read book A Comparison Study Using the Goes Sounder Cloud Top Pressure Product and Cloud Lidar and Radar written by James A. Hawkinson and published by . This book was released on 2003 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Basic Comparison of Lidar and Radar for Remote Sensing of Clouds written by Vernon Ellsworth Derr and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both radar and lidar have proved valuable in studying cloud microphysics and dynamics. Because of the large difference in wavelength, the two techniques have differing penetration capabilities and detection sensitivities. A "system-free" comparison of radar and lidar for several missions and many cloud types is presented to permit the optimum choice of technique for field studies of cloud formation, development, and precipitation.
Download or read book Journal of Geophysical Research written by and published by . This book was released on 2001 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Basic Comparison of Lidar and Radar for Remote Sensing of Clouds written by V. E. Derr and published by . This book was released on 1978 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of Cloud Property Retrieval Using Infrared Sounder Data written by Bruce Anthony Wielicki and published by . This book was released on 1980 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Using Radar Lidar and Radiometer Measurements to Classify Cloud Type and Study Middle Level Cloud Properties written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The project is mainly focused on the characterization of cloud macrophysical and microphysical properties, especially for mixed-phased clouds and middle level ice clouds by combining radar, lidar, and radiometer measurements available from the ACRF sites. First, an advanced mixed-phase cloud retrieval algorithm will be developed to cover all mixed-phase clouds observed at the ACRF NSA site. The algorithm will be applied to the ACRF NSA observations to generate a long-term arctic mixed-phase cloud product for model validations and arctic mixed-phase cloud processes studies. To improve the representation of arctic mixed-phase clouds in GCMs, an advanced understanding of mixed-phase cloud processes is needed. By combining retrieved mixed-phase cloud microphysical properties with in situ data and large-scale meteorological data, the project aim to better understand the generations of ice crystals in supercooled water clouds, the maintenance mechanisms of the arctic mixed-phase clouds, and their connections with large-scale dynamics. The project will try to develop a new retrieval algorithm to study more complex mixed-phase clouds observed at the ACRF SGP site. Compared with optically thin ice clouds, optically thick middle level ice clouds are less studied because of limited available tools. The project will develop a new two wavelength radar technique for optically thick ice cloud study at SGP site by combining the MMCR with the W-band radar measurements. With this new algorithm, the SGP site will have a better capability to study all ice clouds. Another area of the proposal is to generate long-term cloud type classification product for the multiple ACRF sites. The cloud type classification product will not only facilitates the generation of the integrated cloud product by applying different retrieval algorithms to different types of clouds operationally, but will also support other research to better understand cloud properties and to validate model simulations. The ultimate goal is to improve our cloud classification algorithm into a VAP.
Download or read book Report on the Radar Pirep Cloud Top Discrepancy Study written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-11 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the results of the Applied Meteorology Unit's (AMU) investigation of inconsistencies between pilot reported cloud top heights and weather radar indicated echo top heights (assumed to be cloud tops) as identified by the 45 Weather Squadron (45WS). The objective for this study is to document and understand the differences in echo top characteristics as displayed on both the WSR-88D and WSR-74C radars and cloud top heights reported by the contract weather aircraft in support of space launch operations at Cape Canaveral Air Station (CCAS), Florida. These inconsistencies are of operational concern since various Launch Commit Criteria (LCC) and Flight Rules (FR) in part describe safe and unsafe conditions as a function of cloud thickness. Some background radar information was presented. Scan strategies for the WSR-74C and WSR-88D were reviewed along with a description of normal radar beam propagation influenced by the Effective Earth Radius Model. Atmospheric conditions prior to and leading up to both launch operations were detailed. Through the analysis of rawinsonde and radar data, atmospheric refraction or bending of the radar beam was identified as the cause of the discrepancies between reported cloud top heights by the contract weather aircraft and those as identified by both radars. The atmospheric refraction caused the radar beam to be further bent toward the Earth than normal. This radar beam bending causes the radar target to be displayed erroneously, with higher cloud top heights and a very blocky or skewed appearance. Wheeler, Mark M. Kennedy Space Center NAS10-96018...
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Light Scattering by Ice Crystals written by Kuo-Nan Liou and published by Cambridge University Press. This book was released on 2016-10-06 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume outlines the fundamentals and applications of light scattering, absorption and polarization processes involving ice crystals.
Download or read book Assessing the Performance of Several Modis Level 2 Cloud and Aerosol Products Against a Surface Based Polarization Cloud Lidar at Fairbanks AK written by Patrick Cobb and published by . This book was released on 2008 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Global Circulation Models (GCMs) currently suffer from inadequate cloud and aerosol parameterizations due to a shortage of information regarding how clouds and aerosols are globally distributed in space and time. Although surface and airborne instruments can offer reliable cloud and aerosol measurements, such methods are expensive, and their scope is rather limited. Satellite instruments, such as the MODerate resolution Imaging Spectroradiometer (MODIS), may provide an alternative. MODIS measures spectral radiance in thirty-six discreet spectral bands. A variety of cloud and aerosol properties are derived at the pixel scale from these measurements using algorithms developed from radiative transfer theory. A comprehensive validation campaign is underway to assess the quality of these data in hopes that it can be assimilated into the GCMs. This thesis provides one such study comparing the MODIS cloud mask, cloud top properties, cloud thermodynamic phase and aerosol type with overlapping surface data from a polarization cloud lidar at Fairbanks, AK. Most of the sample is comprised of cirrus clouds, which are difficult to detect with satellites. Results are mixed, but are generally consistent with past studies. The MODIS products are fairly dependable, but the algorithms could be improved, especially over the polar regions"--Leaf iii.
Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1996 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Evaluations of the Use of a 35 GHz Radar for Measuring Cloud Base and Cloud Top Heights written by Kumud R. Biswas and published by . This book was released on 1988 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: To determine the accuracy with which a vertically-pointing 35 GHz radar can detect cloud base and cloud top heights, radar data of this type, collected in earlier research projects, have been compared to cloud heights derived from aircraft, a 5.5 GHz scanning radar, and radiosondes. Comparisons with in situ aircraft observations provide the most reliable means for evaluating the accuracy of the 35 GHz radar. In the absence of precipitation, or in very light precipitation, the heights of cloud bases and cloud tops detected by the 35 GHz radar were within approx 100 m of the heights measured by aircraft flying over the radar. However, very thin clouds were not detected by the radar unless they contained some ice particles. In light to heavy precipitation, the 35 GHz radar underestimated cloud top heights and often could not detect cloud bases. (rh).
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Remote Sensing of Tropospheric Composition from Space written by John P. Burrows and published by Springer Science & Business Media. This book was released on 2011-01-15 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impact of anthropogenic activities on our atmospheric environment is of growing public concern and satellite-based techniques now provide an essential component of observational strategies on regional and global scales. The purpose of this book is to summarise the state of the art in the field in general, while describing both key techniques and findings in particular. It opens with an historical perspective of the field together with the basic principles of remote sensing from space. Three chapters follow on the techniques and on the solutions to the problems associated with the various spectral regions in which observations are made. The particular challenges posed by aerosols and clouds are covered in the next two chapters. Of special importance is the accuracy and reliability of remote sensing data and these issues are covered in a chapter on validation. The final section of the book is concerned with the exploitation of data, with chapters on observational aspects, which includes both individual and synergistic studies, and on the comparison of global and regional observations with chemical transport and climate models and the added value that the interaction brings to both. The book concludes with scientific needs and likely future developments in the field, and the necessary actions to be taken if we are to have the global observation system that the Earth needs in its present, deteriorating state. The appendices provide a comprehensive list of satellite instruments, global representations of some ancillary data such as fire counts and light pollution, a list of abbreviations and acronyms, and a set of colourful timelines indicating the satellite coverage of tropospheric composition in the foreseeable future. Altogether, this book will be a timely reference and overview for anyone working at the interface of environmental, atmospheric and space sciences.
Download or read book An Introduction to Atmospheric Radiation written by K. N. Liou and published by Academic Press. This book was released on 2002-04-29 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of radiation for atmospheric applications -- Solar radiation at the top of the atmosphere -- Absorption and scattering of solar radiation in the atmosphere -- Thermal infrared radiation transfer in the atmosphere -- Light scattering by atmospheric particulates -- Principles of radiative transfer in planetary atmospheres -- Application of radiative transfer principles to remote sensing -- Radiation and climate.
Download or read book IEEE International Geoscience and Remote Sensing Symposium Proceedings written by and published by . This book was released on 2002 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Aerosol and Cloud Properties Using Synergy of Lidar and Radar Measurements written by Dongxiang Wang and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dotyczy: optical properties, cloud, aerosol, atmospheric boundary layer, microwave radiometer, Lidar, właściwości optycznych, chmurowego, aerozolu, Atmosferyczna warstwa graniczna, radiometru mikrofalowego, chmurowego radar, Lidaru.
