Download or read book Retrieval and Validation of Cirrus Cloud Properties with the Far Infrared Sensor for Cirrus Firsc During Crystal Face written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This grant supported the principal investigator's analysis of data obtained during CRYSTAL-FACE by two submillimeter-wave radiometers: the Far-Infrared Sensor for Cirrus (FIRSC) and the Conical Scanning Submillimeter-wave Imaging Radiometer (CoSSIR). The PI led the overall FIRSC investigation, though Co-I Michael Vanek led the instrument component at NASA Langley. The overall CoSSIR investigation was led by James Wang at NASA Goddard, but the cirrus retrieval and validation was performed at the University of Colorado. The goal of this research was to demonstrate the submillimeter-wave cirrus cloud remote sensing technique, provide retrievals of ice water path (IWP) and median mass particle diameter (D(sub me)), and perform validation of the cirrus retrievals using other CRYSTAL-FACE datasets. Evans, K. Franklin Goddard Space Flight Center
Download or read book Detection and Retrieval of Cirrus Cloud Systems Using AVHRR Data Verification Based on Fire II IFO Composite Measurements written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed a detection scheme to identify single and multilayer cirrus cloud systems based on the physical properties of the AVHRR Chs, 1-2 reflectances and ratios, the brightness temperature differences between Chs. 4 and 5, and the 4 brightness temperatures. Clear pixels are first separated from cloudy pixels which are then classified into three types: cirrus, cirrus/low cloud, and low cloud. This scheme has been applied to the NOAA satellite data collected over FIRE-II-IFO area, Kansas, during nine overpasses within seven observation dates (November - December 1991). We have validated the detection results against cloudy conditions inferred from the collocated and coincident ground-based lidar and radar images, balloon-borne replicator data, and NCAR-CLASS humidity sounding a case-by-case basis. We show that the satellite detection results are considered with the cloudy conditions inferred from these independent and complementary measurements. We have also modified our retrieval scheme for the determination of cirrus optical depth and ice crystal size in multilayer cirrus cloud systems, case study using FIRE-II-IFO data is reported.
Download or read book Retrieval of Cirrus Radiative and Spatial Properties Using Independent Satellite Data Analysis Techniques written by and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cirrus is one of the most poorly quantified clouds. As a part of International Satellite Cloud Climatology Project (ISCCP), intensive observations of cirrus clouds were taken in the autumn of 1986 over Wisconsin. During this First ISCCP Regional Experiment Cirrus Intensive Field Observation (FIRE Cirrus IFO), coordinated measurements from satellite, aircraft, and ground-based platforms were made of cirrus clouds. This paper deals with the verification of cirrus cloud information, both spatial and radiative, obtained for a 1986 FIRE cloud scene using measurements from two independent sensors onboard the NOAA-9 polar orbiting satellite. In addition to the wide variability in properties common for other types of clouds, cirrus clouds have the added complexity of transmissivity t values that span the entire possible domain 0 = t= 1. Thus, uncertainties exist in thin cirrus cloud amount, altitude, thickness, and optical properties as retrieved from satellite because the measured cirrus signal is affected additionally by an unknown radiation component from below.
Download or read book Cirrus written by David K. Lynch and published by Oxford University Press, USA. This book was released on 2002 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text, devoted entirely to cirrus clouds, captures the state of knowledge of cirrus clouds and serves as a practical handbook as well.
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 Analysis of Cloud Microphysical Property Retrievals in a Vertically Stratified Cirrus Cloud written by Erik R. Olson and published by . This book was released on 2000 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Case Study of Cirrus Cloud Radiative Properties in the Mid and Far Infrared written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Airborne Remote Sounding of Cirrus Cloud Parameters Using ARES Channel Data written by Phillips Laboratory and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of the phase function, single scattering albedos, and extinction coefficients for three representative cirrus cloud ice crystal size distributions are presented for the Airborne Remote Earth Sensing (ARES) System 2-6.4 microns wavelengths. The ice crystal sizes range from 5 to 800 microns with shapes spanning from bullet rosettes, hollow and solid columns, plates, to aggregates. The computations are carried out on the basis of a unified theory for light scattering by ice crystals recently developed by our research group. Effects of incorporating small ice crystals on the scattering and absorption calculations are assessed. An airborne retrieval algorithm to infer cirrus cloud temperature, optical depth, and mean effective sizes is subsequently presented using the ARES 5.1-5.3 and 3.7 microns channels data. This scheme has been applied to the ARES data collected on September 16, 1995, over the Hanscom AFB area. Validation of the retrieved cloud temperature, optical depth, and mean effective size is carried out using the collocated and coincident ground-based 8.6-mm radar data and in-situ size distributions from the 2D probe on board HARP.
Download or read book Airborne Remote Sounding of Cirrus Cloud Parameters Using ARES Channel Data written by S. C. Ou and published by . This book was released on 1997 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of the phase function, single scattering albedos, and extinction coefficients for three representative cirrus cloud ice crystal size distributions are presented for the Airborne Remote Earth Sensing (ARES) System 2-6.4 microns wavelengths. The ice crystal sizes range from 5 to 800 microns with shapes spanning from bullet rosettes, hollow and solid columns, plates, to aggregates. The computations are carried out on the basis of a unified theory for light scattering by ice crystals recently developed by our research group. Effects of incorporating small ice crystals on the scattering and absorption calculations are assessed. An airborne retrieval algorithm to infer cirrus cloud temperature, optical depth, and mean effective sizes is subsequently presented using the ARES 5.1-5.3 and 3.7 microns channels data. This scheme has been applied to the ARES data collected on September 16, 1995, over the Hanscom AFB area. Validation of the retrieved cloud temperature, optical depth, and mean effective size is carried out using the collocated and coincident ground-based 8.6-mm radar data and in-situ size distributions from the 2D probe on board HARP.
Download or read book Tropical Cirrus Cloud Property Retrievals Using Misr and Modis written by Sarah M. Thomas and published by . This book was released on 2002 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Visible and Infrared Cirrus Cloud Optical Properties Using High Spectral Resolution Remote Sensing written by Daniel H. DeSlover and published by . This book was released on 1996 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Retrieval of Cirrus Radiative and Spatial Properties Using Coincident Multispectral Imager and Sounder Satellite Data written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In addition to the wide variability in properties common for the other types of clouds, cirrus clouds have trausmissivity values to that span the entire possible domain 0
Download or read book Cirrus Cloud Radiative Properties in the Thermal Infrared written by Richard John Bantges and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cirrus Particle Distribution Study written by Donald J. Varley and published by . This book was released on 1978 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cirrus particle distribution data are presented for a flight that was made by the AFGL instrumented MC-130E aircraft near Denver, Colorado on 29 October 1977. The data were gathered in support of an Air Force Weapons Laboratory project. The report briefly describes some previous cirrus research and also outlines the basic cloud physics instrumentation aboard the aircraft, particularly the PMS 1-D and 2-D spectrometer equipment. Data averages are given for consecutive 30-sec periods during a 27-min flight through varying thicknesses of cirrus clouds. Besides tabular data, graphs are presented that show the temporal variations of liquid water content and particle concentration as a function of size. The 2-D data indicated most of the cirrus particles were not recognizable according to any standard classification system, although many were bullet rosettes. (Author).
Download or read book Detection and Retrieval of Cirrus Cloud Systems Using AVHHR Data written by S. C. Ou and published by . This book was released on 1997 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DETECTION AND RETRIEVAL OF CIRRUS CLOUD SYSTEMS USING A VHRR DATA VERIFICATION BASED ON FIRE II IFO COMPOSITE MEASUREMENTS written by Phillips Laboratory and published by . This book was released on 1996 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
