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Inference Of Cirrus Cloud Properties From Satellite Observed Visible And Infrared Radiances
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Book Synopsis Inference of Cirrus Cloud Properties from Satellite-observed Visible and Infrared Radiances by : Patrick Minnis
Download or read book Inference of Cirrus Cloud Properties from Satellite-observed Visible and Infrared Radiances written by Patrick Minnis and published by . This book was released on 1991 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cirrus written by David K. Lynch and published by Oxford University Press. This book was released on 2002-01-24 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cirrus clouds are high, thin, tropospheric clouds composed predominately of ice. In the last ten years, considerable work has shown that cirrus is widespread--more common than previously believed--and has a significant impact on climate and global change. As the next generation weather satellites are being designed, the impact of cirrus on remote sensing and the global energy budget must be recognized and accommodated. This book, the first to be devoted entirely to cirrus clouds, captures the state of knowledge of cirrus and serves as a practical handbook as well. Each chapter is based on an invited review talk presented at Cirrus, a meeting hosted by the Optical Society of America and co-sponsored by the American Geophysical Union and the American Meteorological Society. All aspects of cirrus clouds are covered, an approach that reaches into diverse fields. Topics include: the definition of cirrus, cirrus climatologies, nucleation, evolution and dissipation, mixed-phase thermodynamics, crystallinity, orientation mechanisms, dynamics, scattering, radiative transfer, in situ sampling, processes that produce or influence cirrus (and vice versa), contrails, and the influence of cirrus on climate.
Book Synopsis Study of Cloud Properties from Single-scattering, Radiative Forcing, and Retrieval Perspectives by : Yong-Keun Lee
Download or read book Study of Cloud Properties from Single-scattering, Radiative Forcing, and Retrieval Perspectives written by Yong-Keun Lee and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation reports on three different yet related topics in light scattering computation, radiative transfer simulation, and remote sensing implementation, regarding the cloud properties and the retrieval of cloud properties from satellite-based infrared radiometric measurements. First, the errors associated with the use of circular cylinders as surrogates for hexagonal columns in computing the optical properties of pristine ice crystals at infrared (8-12 [micron]) wavelengths are investigated. It is found that the differences between the results for circular cylinders and hexagonal columns are on the order of a few percent at infrared wavelengths. Second, investigated in this dissertation are the outgoing broadband longwave and window channel radiances at the top-of-atmosphere under clear-sky conditions on the basis of the data acquired by the Cloud and the Earth's Radiant Energy System (CERES) instrument onboard the NASA Terra satellite platform. Based on the comparison of the observed broadband radiances with those obtained from rigorous radiative transfer simulations, it is found that the theoretical results tend to be larger than their measured counterparts. Extensive sensitivity studies regarding the uncertainties of various parameters were carried out. Within the considered uncertainties of various factors, the computed radiances are still larger than the observed radiances if thin cirrus clouds are excluded. Thus, a potential cause for the differences could be associated with the presence of thin cirrus clouds whose visible optical thickness is smaller than approximately 0.3. Third, presented in this dissertation is an illustration of the application of hyperspectral infrared channel observations to the retrieval of the cloud properties. Specifically, the hyperspectral measurements acquired from the Atmospheric Infrared Sounder (AIRS) aboard the NASA Aqua platform are used to infer cloud top pressure, effective cloud amount, cloud thermodynamic phase, cloud optical thickness, and the effective size of cloud particles. The AIRS-based retrievals are compared with the counterparts of the operational cloud products derived from the Moderate Resolution Imaging Spectroradiometer (MODIS). The two retrievals agree reasonably well except for the retrieved cloud effective particle size. Furthermore, the diurnal and seasonal contrasts of cloud properties are also investigated on the basis of the cloud properties retrieved from the AIRS data.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Cloud Properties from Satellite Infrared and Visible Measurements by :
Download or read book Cloud Properties from Satellite Infrared and Visible Measurements written by and published by . This book was released on 1976 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposed materials on high speed vehicles such as supersonic aircraft and rockets can be substantially eroded by the water or ice particles of clouds. Engineering tests of various materials suggest that the mass density of hydrometeors is the most significant meteorological parameter related to erosion. Cloud mass density however is not measured routinely, and it is difficult to model the radiative properties observed by satellites for ice particles with varying shape, size and number concentration. Therefore, radiation data from satellites have been compared to simultaneous cloud measurements by aircraft underflights. A variety of cloud conditions including nimbostratus, stratocumulus and cirrus have been sampled over mid-latitudes of the USA during winter and spring months and analyzed with the infrared (IR) and visible measurements from NOAA satellites. Radiances at 12-15 micrometers measured by Vertical Temperature Profile Radiometer (VTPR) instruments are combined with known temperature profiles in order to estimate cloud altitude and infrared (IR) transmissivity. Broadband visible and IR window measurements taken by the Scanning Radiometers on board the same satellites are empirically related to total cloud thickness and mass.
Download or read book Advances in Geophysics written by and published by Academic Press. This book was released on 1996-02-29 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the Foreword:"This series has provided workers in many fields with invaluable reference material and criticism."--Science Progress"Should be on the bookshelf of every geophysicist."--Physics Today"The entire series should be in the library of every group working in geophysics."--American Scientist
Book Synopsis Cirrus Cloud Optical and Morphological Variations Within a Mesoscale Volume by : Walter W. Wolf
Download or read book Cirrus Cloud Optical and Morphological Variations Within a Mesoscale Volume written by Walter W. Wolf and published by . This book was released on 1993 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Clouds, Chemistry and Climate by : Paul J. Crutzen
Download or read book Clouds, Chemistry and Climate written by Paul J. Crutzen and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this NATO Advanced Research Workshop was to discuss our current understanding of the role of clouds in climate and chemistry. The range of topics dis cussed during the workshop included: modeling of clouds in GCMs; observations of the cloud micro physical properties; the water vapor cycle; troposphere-stratosphere exchange; role of in-cloud transport in tropospheric ozone; regulation of current and paleo climate by clouds; and anthropogenic sulfate aerosols and modification of cloud properties. The essence of the discussions is captured in the accompanying summary by the rapporteurs and the chapters by some of the speakers. The underlying message is that significant progress has been made, resulting in exciting new developments in our perception of the role of clouds in the global system . .. The tropical convective-cirrus cloud systems emerge as a major influence on the climate system. Micro physical processes, such as the rate of precipitation and re evaporation of ice particles, seem to regulate the large scale vertical distribution of water vapor which is the dominant greenhouse gas. Water vapor data collected during the Central Equatorial Pacific Experiment (CEPEX), document the large moistening effect of deep convection on scales of thousands of kilometers. A major chemical finding in the same region was the observation of extremely low ozone 8 volume mixing ratios of less than 10- in the entire troposphere of the central equatorial Pacific extending over a distance of about 2000 km. This finding establishes the Pacific as a major chemical sink region for tropospheric ozone.
Book Synopsis FIRE Cirrus Science Results 1993 by : David S. McDougal
Download or read book FIRE Cirrus Science Results 1993 written by David S. McDougal and published by . This book was released on 1993 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tunable Laser Applications by : Frank Duarte
Download or read book Tunable Laser Applications written by Frank Duarte and published by CRC Press. This book was released on 1995-08-18 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work details tunable laser applications of broad interest, historical significance and potential future value. Atomic and molecular spectroscopy, interferometry, lightening triggering, imaging, laser radar, lidar and gyroscopes are discussed. The work focuses on various sources of coherent radiation such as optical parametric oscillators, external cavity semiconductors lasers, and dye, gas, C02, ultrashort-pulse and free-electron lasers.
Book Synopsis Investigation of Thin Cirrus Cloud Optical and Microphysical Properties on the Basis of Satellite Observations and Fast Radiative Transfer Models by : Chenxi Wang
Download or read book Investigation of Thin Cirrus Cloud Optical and Microphysical Properties on the Basis of Satellite Observations and Fast Radiative Transfer Models written by Chenxi Wang and published by . This book was released on 2013 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on the global investigation of optically thin cirrus cloud optical thickness [tau] and microphysical properties, such as, effective particle size (D_(eff)) and ice crystal habits (shapes), based on the global satellite observations and fast radiative transfer models (RTMs). In the first part, we develop two computationally efficient RTMs simulating satellite observations under cloudy-sky conditions in the visible/shortwave infrared (VIS/SWIR) and thermal inferred (IR) spectral regions, respectively. To mitigate the computational burden associated with absorption, thermal emission and multiple scattering, we generate pre-computed lookup tables (LUTs) using two rigorous models, i.e., the line-by-line radiative transfer model (LBLRTM) and the discrete ordinates radiative transfer model (DISORT). The second part introduces two methods (i.e., VIS/SWIR- and IR-based methods) to retrieve [tau] and D_(eff) from satellite observations in corresponding spectral regions of the two RTMs. We discuss the advantages and weakness of the two methods by estimating the impacts from different error sources on the retrievals through sensitivity studies. Finally, we develop a new method to infer the scattering phase functions of optically thin cirrus clouds in a water vapor absorption channel (1.38-[mu]m). We estimate the ice crystal habits and surface structures by comparing the inferred scattering phase functions and numerically simulated phase functions calculated using idealized habits. We find two critical features of the two retrieval methods: (1) the IR-based method is more sensitive to optically thin cirrus cloud, and (2) the VIS/SWIR-based method is more sensitive to the pre-assumed ice cloud microphysical parameterization schemes. We derive the optically thin cirrus cloud phase functions based on the two methods. We find that small column-like particles (e.g., solid columns and column-aggregates) and droxtals with rough surfaces are likely to reside in optically thin cirrus clouds. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151213
Download or read book Monthly Weather Review written by and published by . This book was released on 1999 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ... International Symposium on Remote Sensing of Environment by :
Download or read book Proceedings of the ... International Symposium on Remote Sensing of Environment written by and published by . This book was released on 2003 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Alexander A. Kokhanovsky Publisher :Springer Science & Business Media ISBN 13 :3540376720 Total Pages :509 pages Book Rating :4.5/5 (43 download)
Book Synopsis Light Scattering Reviews by : Alexander A. Kokhanovsky
Download or read book Light Scattering Reviews written by Alexander A. Kokhanovsky and published by Springer Science & Business Media. This book was released on 2006-09-03 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an account of recent developments in light scattering media optics. Leading researchers focus on both the theoretical and experimental results in the area. In particular, light scattering by ice crystals, soil particles and biological particles is considered. This volume first discusses single light scattering, followed by multiple light scattering and finally examines possible applications in combustion and marine research.
Book Synopsis The Detection and Characterization of Cirrus Cloud Properties from Simulated and Observed High-spectral-resolution Infrared Radiances by : Brian Hannon Kahn
Download or read book The Detection and Characterization of Cirrus Cloud Properties from Simulated and Observed High-spectral-resolution Infrared Radiances written by Brian Hannon Kahn and published by . This book was released on 2004 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the American Meteorological Society by : American Meteorological Society
Download or read book Bulletin of the American Meteorological Society written by American Meteorological Society and published by . This book was released on 1999 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in v. 1, 8.
Book Synopsis Light Scattering by Ice Crystals by : Kuo-Nan Liou
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.