Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 921-940 of 5084
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Analysis and Prediction of Ocean Swell Using Instrumented Buoys
(American Meteorological Society, 1994)During the period 20?23 September 1990, the remnants of Supertyphoon Flo moved into the central North Pacific Ocean with sustained wind speeds of 28 m s?1. The strong wind and large fetch area associated with this storm ... -
Wavenumber Spectrum of Very Short Wind Waves: An Application of Two-Dimensional Slepian Windows to Spectral Estimation
(American Meteorological Society, 1994)A multitaper 2D spectral estimation method is developed for increasing the degree of freedom of the estimation. The core of this method is 2D Slepian eigen windows that are optimum in the sense of minimizing the spectral ... -
Frequency Response of a Thermistor Temperature Probe in Air
(American Meteorological Society, 1994)An analytical study was conducted of the thermal frequency response of an atmospheric temperature probe consisting of a thermistor bead with two lead wires soldered to thin support posts. Such probes are used in aircraft ... -
Time and Frequency Response of a Resistance-Wire Aircraft Atmospheric Temperature Sensor
(American Meteorological Society, 1994)The heat transfer characteristics of an aircraft-mounted resistance-wire atmospheric temperature sensor are modeled to determine the time and frequency responses. The sensor element (Rosemount 102E4AL) consists of a ... -
An Infrared Hygrometer for Atmospheric Research and Routine Monitoring
(American Meteorological Society, 1994)The development and testing of a field durable, infrared differential absorption hygrometer is described. This noncontact hygrometer offers reliable operation in harsh environments while maintaining subsecond response ... -
Objective Estimates of Airborne Snow Properties
(American Meteorological Society, 1994)A mensuration and description method is proposed that allows objective and simultaneous expression of the physical properties of snow crystals, rime drops, and aerosol particles. It is based on the statistics of Hatch and ... -
An Evaluation of the Accuracy of Some Radar Wind Profiling Techniques
(American Meteorological Society, 1984)Advances in clear air Doppler radar measurement have made practical the monitoring of radial velocities in the troposphere and lower stratosphere and even the vector wind, under some assumptions. Because the objective of ... -
Compressed Air Sample Technology for Isotopic Analysis of Atmospheric Carbon Monoxide
(American Meteorological Society, 1994)A methodology for the collection of large (1000 L) air samples for isotopic analysis of atmospheric carbon monoxide is presented. A low-background, high-pressure, high-flow sampling system with a residual background of ... -
Filtering, Sampling, and Information Content within Satellite-Derived Multispectral or Mixed-Resolution Imagery
(American Meteorological Society, 1994)The importance of an ?alias-free imaging? approach to multidimensional ?sounder? instrumentation is highlighted, together with its potential for improving noise-equivalent differential temperature and spatial resolution ... -
A Simple Method for Testing Brightness Temperatures from Satellite Microwave Radiometers
(American Meteorological Society, 1994)A method is proposed for testing microwave measurements from spaceborne sensors by computing collocated simulated brightness temperatures from the ECMWF numerical weather meteorological model using an atmospheric radiative ... -
Flow Distortion Calculations and Their Application in HEXMAX
(American Meteorological Society, 1994)Several methods are examined for correction of turbulence and eddy fluxes in the atmospheric boundary layer, two of them based on a potential-flow approach initiated by Wyngaard. If the distorting object is cylindrical or ... -
Validation of a Technique for Estimating Outgoing Longwave Radiation from HIRS Radiance Observations
(American Meteorological Society, 1994)Simultaneous observations by the Earth Radiation Budget Experiment (ERBE) scanning radiometer and the High-Resolution Infrared Sounder (HIRS) on board the NOAA-9 spacecraft have been used to validate a multispectral technique ... -
Velocity Track Display—A Technique to Extract Real-Time Tropical Cyclone Circulations Using a Single Airborne Doppler Radar
(American Meteorological Society, 1994)The concept and formulation of a real-time airborne Doppler radar wind field analysis technique, velocity track display (VTD), is presented. The VTD algorithm is a harmonic analysis method similar to the velocity?azimuth ... -
Analysis and Interpretation of Dual-Polarized Radar Measurements at +45° and −45° Linear Polarization States
(American Meteorological Society, 1994)Equations are derived for transforming radar data obtained with ±45° linear polarization states to conventional radar parameters measured at horizontal and vertical polarization states. The derivation is based on the ... -
A New Approach to Estimating Rainwater Content by Radar Using Propagation Differential Phase Shift
(American Meteorological Society, 1994)As microwaves propagate through rain, the rate of phase change with increasing distance is different depending upon whether the transmissions are polarized horizontally or vertically. This rate of change is the so-called ... -
Measuring Rainwater Content by Radar Using Propagation Differential Phase Shift
(American Meteorological Society, 1994)While radars measure several quantities closely coupled to the rainfall rate, for frequencies less than 15 GHZ, estimates of the rainwater content W are traditionally computed from the radar reflectivity factor Z or the ... -
Simple Adjoint Methods for Single-Doppler Wind Analysis with a Strong Constraint of Mass Conservation
(American Meteorological Society, 1994)Three schemes are developed to incorporate a strong constraint of (incompressible) mass conservation into the basic scheme (scheme B) of the simple adjoint method of Qiu and Xu for retrieving the time-mean wind field from ... -
Adjoint-Method Retrievals of Low-Altitude Wind Fields from Single-Doppler Reflectivity Measured during Phoenix II
(American Meteorological Society, 1994)The simple adjoint method of Qiu and Xu is upgraded and tested with the Phoenix II data for retrieving the low-altitude winds from the movements of reflectivity patterns measured by a single-Doppler radar. The upgraded ... -
Pulse-to-Pulse Coherent Doppler Sonar Signal Processing Techniques
(American Meteorological Society, 1984)In this paper we present and discuss techniques for the computation of the mean and spectral variance of a pulse-to-pulse coherent sonar signal, leading to the measurement of mean water velocity and turbulence. The use of ... -
Comparisons of Horizontal Winds Measured by Opposing Beams with the Flatland ST Radar and between Flatland Measurements and NMC Analyses
(American Meteorological Society, 1994)This study examines the consistency between VHF horizontal wind measurements and those interpolated from routine objective analyses. First, the agreement between the two U components and between the two V components measured ...