Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 3541-3560 of 5084
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Oscillatory Anemometer
(American Meteorological Society, 1986)Experiments are described on the behavior of a wind vane that is constructed in such a way that it is forced to oscillate about the wind direction. The forcing is accomplished by allowing the upwind edge of the vane's fin ... -
An Interactive System for Processing PMS Two-Dimensional Imaging Probe Data
(American Meteorological Society, 1986)A system for interactively editing Particle Measuring Systems (PMS) two-dimensional (2-D) probe data, which has been processed using automated techniques is described. The system allows for reassignment of particle habits ... -
Selected Comments on the Use of the Divergence Equation to Obtain Temperature and Geopotentials from an Observed Wind
(American Meteorological Society, 1986)Recent suggestions to use the full divergence equation and nearly continuous (in time) wind observations to retrieve the geopotential and temperature of large-scale and mesoscale (but still hydrostatic) phenomena are ... -
An Algorithm for Lidar Mapping of Aerosol Concentrations in a Varying Atmospheric Background Density
(American Meteorological Society, 1986)An algorithm for the determination of the number density profiles of a specific aerosol as a function of time and space is developed and discussed. The algorithm is applicable to atmospheric conditions in which a varying ... -
Partial Spline Models for the Inclusion of Tropopause and Frontal Boundary Information in Otherwise Smooth Two- and Three-Dimensional Objective Analysis
(American Meteorological Society, 1986)A new method, based on partial splint models, is developed for including specified discontinuities in otherwise smooth two- and three-dimensional objective analyses. The method is appropriate for including tropopause height ... -
On the Sensitivity of Weather Radars
(American Meteorological Society, 1986)This paper discusses the subject of weather radar system sensitivity from a general point of view, with emphasis an the influence of wavelength. Expressions for the echo signal-to-noise ratio are examined using a detection ... -
Retrieval of Horizontal Wind Field and Mesoscale Vertical vorticity in Stratiform Precipitation by Conical Scannings with Two Doppler Radars
(American Meteorological Society, 1986)Stratiform precipitations associated with fronts and squall lines are commonly observed by means of a single Doppler radar operating conical scannings. The data analysis is frequently the Velocity Azimuth Display?or ... -
The Altitude Coverage of the Colorado Wind Profilers at 50, 405 and 915 MHz
(American Meteorological Society, 1986)The maximum height performance of the 50, 405 nd 915 MHz Colorado wind profiles is computed from the wind profiler database. Results show that even though the 50 MHz profiler has the largest seasonal variation in the maximum ... -
The RAFOS System
(American Meteorological Society, 1986)The RAFOS float is a small neutrally buoyant subsurface order, which, like its big brother the SOFAR float, uses the deep sound (or SOFAR) channel to determine its position as a function of time. Whereas the SOFAR float ... -
The Influence of Raingage Integration Time, on Measured Rainfall-intensity Distribution Functions
(American Meteorological Society, 1986)Rainfall-rate statistics are frequently derived on the basis of raingage recordings having effective integration times of five minutes or more. The conversion of such data to equivalent statistics for an effective integration ... -
The Use of Inertial Altitude in the Determination of the Convective-Scale Pressure Field over Land
(American Meteorological Society, 1986)Pressure perturbations are measured from an aircraft by subtracting its pressure altitude from its actual altitude. The pressure perturbation is equal to the resulting ?D-value? multiplied by the acceleration of gravity ... -
The Ill-posed Nature of the Satellite Temperature Retrieval Problem and the Limits of Retrievability
(American Meteorological Society, 1986)The inverse problem of satellite temperature profile retrieval is well known to be ill-posed. Ibis means that not only is a vertical temperature profile solution not unique, but that two solutions can be very different ... -
An Operational System for the Remote Location of Lightning Flashes Using a VLF Arrival Time Difference Technique
(American Meteorological Society, 1986)An operational system for the remote location of lightning flashes at ranges of thousands of kilometers is presented. The vertical electric fields of VLF radio atmospherics (sferics), together with time data, are observed ... -
A Direct Method for Deriving Drop-Size Distribution and Vertical Air Velocities from VHF Doppler Radar Spectra
(American Meteorological Society, 1986)In precipitation environments, sensitive VHF Doppler radars have a capability to detect echoes from both refractive index irregularities and precipitation particles. The purpose of this paper is to propose a direct method ... -
An Examination of the Uncertainty in Interpolated Winds and Its Effect on the Validation and Intercomparison of Forecast Models
(American Meteorological Society, 2002)Meteorological models need to be compared to long-term, routinely collected meteorological data. Whenever numerical forecast models are validated and compared, verification winds are normally interpolated to individual ... -
XBT Fall Rate in Waters of Extreme Temperature: A Case Study in the Antarctic Ocean
(American Meteorological Society, 2002)XBT fall-rate variation in waters of extreme temperature and the resulting depth error has been addressed using controlled XBT?CTD datasets collected from two cruises in the Southern Ocean. Mean depth errors deduced from ... -
A Wavelet-Based Technique for Identifying, Labeling, and Tracking of Ocean Eddies
(American Meteorological Society, 2002)Wavelet analysis offers a new approach for viewing and analyzing various large datasets by dividing information according to scale and location. Here a new method is presented that is designed to characterize time-evolving ... -
Assessment of Acoustic Coherent Doppler and Cross-Correlation Techniques for Measuring Near-Bed Velocity and Suspended Sediment Profiles in the Marine Environment
(American Meteorological Society, 2002)The simultaneous measurement of current flow and suspended sediment concentration in the marine environment is central to the study of sediment transport processes. In view of this, two acoustic approaches for measuring ... -
Estimating Spatial Velocity Statistics with Coherent Doppler Lidar
(American Meteorological Society, 2002)The spatial statistics of a simulated turbulent velocity field are estimated using radial velocity estimates from simulated coherent Doppler lidar data. The structure functions from the radial velocity estimates are processed ... -
Polarimetric Radar Observations and Interpretation of Co-Cross-PolarCorrelation Coefficients
(American Meteorological Society, 2002)Preliminary analysis of all components of the polarimetric radar covariance matrix for precipitation measured with the NCAR S-band dual-polarization Doppler radar (S-Pol) and the Colorado State University?University of ...