Journal of Atmospheric and Oceanic Technology: Recent submissions

Now showing items 3641-3660 of 5084

    • Sun Glint Contamination in ATSR-2 Data: Comparison of Observations and Values Calculated from the Measured 1.6-μm Reflectivities 

      Závody, Albin M.; Birks, Andrew R. (American Meteorological Society, 2004)
      The effect of radiation from the sun reflected at the sea surface on the 11- and 12-?m brightness temperatures measured by the Along-Track Scanning Radiometer ATSR-2 has been investigated. An attempt was made to determine ...

    • Identification and Analysis of Climatic Fields through Dot-Density Shading 

      Lavin, Stephen J.; Cerveny, Randall S. (American Meteorological Society, 1986)
      Gridded matrices of climatic data can be mapped by computer with a variety of symbolization methods, all of which have some shortcomings. A new mapping procedure, dot-density shading, is herein proposed as an alternative ...

    • A Technique for Autocalibration of Cloud Lidar 

      O'Connor, Ewan J.; Illingworth, Anthony J.; Hogan, Robin J. (American Meteorological Society, 2004)
      In this paper a technique for autocalibration of a cloud lidar is demonstrated. It is shown that the lidar extinction-to-backscatter ratio derived from integrated backscatter for stratocumulus is, in the absence of drizzle, ...

    • Radio Acoustic Sounding with a UHF Volume Imaging Radar 

      Dekker, Paco López; Frasier, Stephen J. (American Meteorological Society, 2004)
      An implementation of a radio acoustic sounding system (RASS) using a UHF volume imaging radar is presented. The volume-imaging ability of the radar permits the study the spatial structure of the RASS echo observing both ...

    • An Automated Cloud-Edge Detection Algorithm Using Cloud Physics and Radar Data 

      Ward, Jennifer G.; Merceret, Francis J. (American Meteorological Society, 2004)
      An automated cloud-edge detection algorithm was developed and extensively tested. The algorithm uses in situ cloud physics data measured by a research aircraft coupled with ground-based weather radar measurements to determine ...

    • Doppler Lidar Measurements of Turbulent Structure Function over an Urban Area 

      Davies, F.; Collier, C. G.; Pearson, G. N.; Bozier, K. E. (American Meteorological Society, 2004)
      Analysis of radial wind velocity data from the Salford pulsed Doppler infrared lidar is used to calculate turbulent spectral statistics over the city of Salford in the United Kingdom. The results presented here, first, ...

    • Validation of Parameterized Algorithms Used to Derive TRMM–CERES Surface Radiative Fluxes 

      Gupta, Shashi K.; Kratz, David P.; Wilber, Anne C.; Nguyen, L. Cathy (American Meteorological Society, 2004)
      Parameterized shortwave and longwave algorithms developed at the Langley Research Center have been used to derive surface radiative fluxes in the processing of the Clouds and the Earth's Radiant Energy System (CERES) data ...

    • Real-Time Sky-View Factor Calculation and Approximation 

      Chapman, L.; Thornes, J. E. (American Meteorological Society, 2004)
      Previously, the acquisition of sky-view factor data for climate studies has been time consuming and dependent on postprocessing. However, advances in technology now mean that techniques using fish-eye imagery can be ...

    • Dealiasing Doppler Velocities Measured by a Bistatic Radar Network during a Downburst-Producing Thunderstorm 

      Friedrich, Katja; Caumont, Olivier (American Meteorological Society, 2004)
      The object of this paper was to develop an automated dealiasing scheme that dealiases Doppler velocities measured by a bistatic Doppler radar network. The particular network consists of the C-band polarimetric diversity ...

    • Interpolation Scheme for Standard Depth Data Applicable for Areas with a Complex Hydrographical Structure 

      Oguma, Sachiko; Suzuki, Toru; Nagata, Yutaka; Watanabe, Hidetoshi; Yamaguchi, Hatsuyo; Hanawa, Kimio (American Meteorological Society, 2004)
      Oceanographic datasets, which are arranged for standard depths, have many applications for various users. However, oceanic observations are not always conducted exactly at standard depths, especially in the case of historical ...

    • Reconstructing Synthetic Profiles from Surface Data 

      Nardelli, Bruno Buongiorno; Santoleri, Rosalia (American Meteorological Society, 2004)
      A method for the extrapolation of vertical profiles of temperature (and/or steric heights) from measurements of sea surface elevation and sea surface temperature has been developed and is described here. The technique, ...

    • Autonomous Measurements of Sea Surface Temperature Using In Situ Thermal Infrared Data 

      Niclòs, Raquel; Caselles, Vicente; Coll, César; Valor, Enric; Rubio, Eva (American Meteorological Society, 2004)
      In situ and autonomous measurements of sea surface temperature (SST) have been performed with a thermal infrared radiometer mounted on a fixed oil rig. The accuracy limit was established at ±0.3 K for these SST measurements ...

    • The Replication of Ice Crystals Using Formvar: Techniques and Precautions 

      Griggs, D. J.; Jayaratne, E. R. (American Meteorological Society, 1986)
      A number of precautions which should be taken during the replication of ice crystals using a Formvar solution have been identified. Several different forms of inaccurate and poor quality replicas are illustrated. Their ...

    • Monitoring Volume Transport through Measurement of Cable Voltage across the Korea Strait 

      Kim, Kuh; Lyu, Sang Jin; Kim, Young-Gyu; Choi, Byung Ho; Taira, Keisuke; Perkins, Henry T.; Teague, William J.; Book, Jeffrey W. (American Meteorological Society, 2004)
      Voltage induced by the Tsushima Current on an abandoned submarine telephone cable between Pusan, Korea, and Hamada, Japan, has been measured since March 1998 in order to monitor the volume transport through the Korea Strait. ...

    • Deriving Mixed-Phase Cloud Properties from Doppler Radar Spectra 

      Shupe, Matthew D.; Kollias, Pavlos; Matrosov, Sergey Y.; Schneider, Timothy L. (American Meteorological Society, 2004)
      In certain circumstances, millimeter-wavelength Doppler radar velocity spectra can be used to estimate the microphysical composition of both phases of mixed-phase clouds. This distinction is possible when the cloud properties ...

    • A Computer-Controlled Continuous Air Drying and Flask Sampling System 

      Neubert, R. E. M.; Spijkervet, L. L.; Schut, J. K.; Been, H. A.; Meijer, H. A. J. (American Meteorological Society, 2004)
      A computer-controlled continuous air drying and flask sampling system has been developed and is discussed here. This system is set up for taking air samples automatically at remote places. Twenty glass flasks can be connected ...

    • A Portable Eddy Covariance System for the Measurement of Ecosystem–Atmosphere Exchange of CO2, Water Vapor, and Energy 

      Billesbach, D. P.; Fischer, M. L.; Torn, M. S.; Berry, J. A. (American Meteorological Society, 2004)
      To facilitate the study of flux heterogeneity within a region, the authors have designed and field-tested a portable eddy covariance system to measure exchange of CO2, water vapor, and energy between the land surface and ...

    • The Effects of Rainfall Inhomogeneity on Climate Variability of Rainfall Estimated from Passive Microwave Sensors 

      Kummerow, Christian; Poyner, Philip; Berg, Wesley; Thomas-Stahle, Jody (American Meteorological Society, 2004)
      Passive microwave rainfall estimates that exploit the emission signal of raindrops in the atmosphere are sensitive to the inhomogeneity of rainfall within the satellite field of view (FOV). In particular, the concave nature ...

    • Evaluation of a New Polarimetrically Based Z–R Relation 

      Bringi, V. N.; Tang, Taiwen; Chandrasekar, V. (American Meteorological Society, 2004)
      A new polarimetrically based (or, pol-based) Z?R relation of the form Z = aR1.5 is described and evaluated where the multiplicative coefficient a is continuously adjusted as the drop size distribution evolves in space and ...

    • The Application of Hilbert–Huang Transforms to Meteorological Datasets 

      Duffy, Dean G. (American Meteorological Society, 2004)
      Recently a new spectral technique has been developed for the analysis of aperiodic signals from nonlinear systems?the Hilbert?Huang transform. It is shown how this transform can be used to discover synoptic and climatic ...