Journal of Atmospheric and Oceanic Technology: Recent submissions

Now showing items 4181-4200 of 5084

    • The Merger of Mesoscale Datasets into a Common Cartesian Format for Efficient and Systematic Analyses 

      Mohr, Carl G.; Jay Miller, L.; Vaughan, Robin L.; Frank, Harold W. (American Meteorological Society, 1986)
      During the 1981 summer season within a 70 000 km2 area surrounding Miles City, Montana, researchers from approximately twenty institutions participated in the Cooperative Convective Precipitation Experiment (CCOPE). The ...

    • High-Resolution Doppler Lidar for Boundary Layer and Cloud Research 

      Grund, Christian J.; Banta, Robert M.; George, Joanne L.; Howell, James N.; Post, Madison J.; Richter, Ronald A.; Weickmann, Ann M. (American Meteorological Society, 2001)
      The high-resolution Doppler lidar (HRDL) was developed to provide higher spatial, temporal, and velocity resolution and more reliable performance than was previously obtainable with CO2-laser-based technology. The improved ...

    • An Evaluation of Radar Rainfall Estimates from Specific Differential Phase 

      Brandes, Edward A.; Ryzhkov, Alexander V.; Zrnić, Dus̆an S. (American Meteorological Society, 2001)
      Specific differential propagation phase (KDP) is examined for estimating convective rainfall in Colorado and Kansas. Estimates are made at S band with KDP alone and in combination with radar reflectivity (ZH). Results are ...

    • 3D Wind Field Retrieval Applied to Snow Events Using Doppler Radar 

      Nissen, Robert; Hudak, David; Laroche, Stéphane; de Elía, Ramón; Zawadzki, Isztar; Asuma, Yoshio (American Meteorological Society, 2001)
      The variational analysis method of Laroche and Zawadzki for the retrieval of the 3D wind field from single?Doppler radar data is adapted to analyze stratiform snow events. Modifications include prefiltering of noisy radial ...

    • Retrieval of Atmospheric Temperature Profiles from AMSU-A Measurement Using a Neural Network Approach 

      Shi, Lei (American Meteorological Society, 2001)
      Backpropagation neural networks are applied to retrieve atmospheric temperature profiles and tropopause variables from the NOAA-15 Advanced Microwave Sounding Unit-A (AMSU-A) measurement based on two different data sources. ...

    • Airflow Characteristics of Commonly Used Temperature Radiation Shields 

      Lin, X.; Hubbard, Kenneth G.; Meyer, George E. (American Meteorological Society, 2001)
      The air temperature radiation shield is a key component in air temperature measurement in weather station networks; however, it is widely recognized that significant errors in the measured air temperature exist due to ...

    • Interpretation of Polarimetric Radar Covariance Matrix for Meteorological Scatterers: Theoretical Analysis 

      Ryzhkov, Alexander V. (American Meteorological Society, 2001)
      A simple model of the radar scattering by atmospheric particles is used to interpret all elements of the covariance scattering matrix. The components of the covariance scattering matrix and corresponding polarimetric ...

    • Measurement of Broadband Diffuse Solar Irradiance Using Current Commercial Instrumentation with a Correction for Thermal Offset Errors 

      Dutton, Ellsworth G.; Michalsky, Joseph J.; Stoffel, Thomas; Forgan, Bruce W.; Hickey, John; Nelson, Donald W.; Alberta, Timothy L.; Reda, Ibrahim (American Meteorological Society, 2001)
      Diffuse-sky solar irradiance is an important quantity for radiation budget research, particularly as it relates to climate. Diffuse irradiance is one component of the total downwelling solar irradiance and contains information ...

    • Automated Analysis of Ocean Surface Directional Wave Spectra 

      Hanson, Jeffrey L.; Phillips, Owen M. (American Meteorological Society, 2001)
      To facilitate investigations of surface wave processes in the open ocean, a wave spectral partitioning method with automated swell tracking and storm source identification capabilities has been developed. These tools ...

    • An Entropy Approach to Tuning Weights and Smoothing in the Generalized Inversion 

      Kivman, Gennady A.; Kurapov, Alexandre L.; Guessen, Alina V. (American Meteorological Society, 2001)
      Weak constraint data assimilation involves a certain number of weighting and smoothing parameters. The authors present an approach to estimate them based on maximizing the entropy. Because application of this rigorous ...

    • A Fast and Accurate Thermistor String 

      van Haren, H.; Groenewegen, R.; Laan, M.; Koster, B. (American Meteorological Society, 2001)
      A ?fast thermistor string? has been built to accommodate the scientific need to accurately monitor internal wave activity in shelf seas and above sloping bottoms in the ocean. The performance of the thermistors and their ...

    • The Reduction of Errors Caused by Bright Bands in Quantitative Rainfall Measurements Made Using Radar 

      Smith, Catherine J. (American Meteorological Society, 1986)
      The presence of melting snow in a radar beam produces a highly enhanced return which can lead to large errors in estimates of areal surface rainfall made with radar. This paper describes an algorithm for use in real time ...

    • Laboratory–Numerical Model Comparisons of Flow over a Coastal Canyon 

      Pérenne, Nicolas; Haidvogel, Dale B.; Boyer, Don L. (American Meteorological Society, 2001)
      Different modeling approaches are applied to the same geophysical flow in order to assess the ability of laboratory models to provide useful benchmarks in the development of oceanic numerical models. The test case considered ...

    • Coastal Oceanography Using a Small AUV 

      An, Edgar; Dhanak, Manhar R.; Shay, Lynn K.; Smith, Samuel; Van Leer, John (American Meteorological Society, 2001)
      Bathymetry, current, temperature, and depth (CTD) measurements using a small, mobile, autonomous underwater vehicle (AUV) platform are described. Autonomous surveys of a shallow water column off the east coast of Florida ...

    • Design, Operation, and Calibration of a Shipboard Fast-Rotating Shadowband Spectral Radiometer 

      Reynolds, R. Michael; Miller, Mark A.; Bartholomew, Mary J. (American Meteorological Society, 2001)
      This paper describes the design, calibration, and deployment of a fast-rotating shadowband radiometer (FRSR) that accurately decomposes downward shortwave (solar) irradiance into direct-beam and diffuse components from a ...

    • TOA Lightning Location Retrieval on Spherical and Oblate Spheroidal Earth Geometries 

      Koshak, W. J.; Solakiewicz, R. J. (American Meteorological Society, 2001)
      A simple linear algebraic solution is introduced for retrieving the location and time-of-occurrence of lightning ground strikes on a spherical earth from a network of four or more time-of-arrival sensors. Since the solution ...

    • AVHRR Pixel Level Clear-Sky Classification Using Dynamic Thresholds (CLAVR-3) 

      Vemury, S.; Stowe, L. L.; Anne, V. R. (American Meteorological Society, 2001)
      Clear-sky classifications from the Clouds from the Advanced Very High Resolution Radiometer (AVHRR)-Phase 1 (CLAVR-1) program are used to create an 8-day rotating clear-sky radiation dataset. This dataset is used to create ...

    • Estimation of Total Atmospheric Ozone from GOES Sounder Radiances with High Temporal Resolution 

      Li, Jun; Schmidt, Christopher C.; Nelson, James P.; Schmit, Timothy J.; Menzel, W. Paul (American Meteorological Society, 2001)
      The potential for using Geostationary Operational Environmental Satellite (GOES) Sounder radiance measurements to monitor total atmospheric ozone is examined. A statistical regression using GOES Sounder spectral bands 1?15 ...

    • Characterization and Correction of Relative Humidity Measurements from Vaisala RS80-A Radiosondes at Cold Temperatures 

      Miloshevich, Larry M.; Vömel, Holger; Paukkunen, Ari; Heymsfield, Andrew J.; Oltmans, Samuel J. (American Meteorological Society, 2001)
      Radiosonde relative humidity (RH) measurements are known to be unreliable at cold temperatures. This study characterizes radiosonde RH measurements from Vaisala RS80-A thin-film capacitive sensors in the temperature range ...

    • Two New Types of Ultrafast Aircraft Thermometer 

      Haman, Krzysztof E.; Malinowski, Szymon P.; Struś, Bożena D.; Busen, Reinhold; Stefko, Andrzej (American Meteorological Society, 2001)
      A new version of an ultrafast aircraft resistance thermometer (UFT-F) with a time constant of the order 10?4 s,for use in both cloudy and cloudless air, is described. It evolved from an earlier version (UFT-S). Its sensing ...