Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 3341-3360 of 5084
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A Real-Time Implementation of Staggered PRT Velocity Unfolding
(American Meteorological Society, 1989)tract -
The Visualization of Cloud Droplet Spectra
(American Meteorological Society, 1989)This paper draws attention to the use of readily available, wire cage graphics for inspecting cloud droplet spectra measured using a Forward Light-Scattering Spectrometer Probe. The high resolution cloud droplet spectra ... -
Efficient Processing of Alternately Polarized Radar Signals
(American Meteorological Society, 1989)Processing of simultaneous measurements of differential polarization parameters (differential reflectivity, ZDR, and differential phase shift, ?DP) and Doppler spectral moments is discussed. It is shown how ZDR and ?DP ... -
On In Situ “Calibration” of Shipboard ADCPs
(American Meteorological Society, 1989)Methods for in situ calibration of acoustic-Doppler current profiles (ADCPs) are considered for measurement of absolute current profiles from a moving ship. Errors are of two types: sensitivity and alignment. Least square ... -
Microcomputer Numerical Ocean Surface Wave Model
(American Meteorological Society, 1989)A numerical wean surface wave model has been developed specifically to operate on desktop super micro-computers. The model uses one or more local and moving grids within which waves of importance at a location of interest ... -
Accuracy Assessment of Widely Used Orbit Error Approximations in Satellite Altimetry
(American Meteorological Society, 1989)Orbit error simulations have shown that the orbit error can be assumed to be a slowly varying sine wave with a predominant wavelength comparable to the earth's circumference. Thus, one can derive analytically the error ... -
The Dynamic Response of a Wind Measuring System
(American Meteorological Society, 1989)The response of a simple wind measuring system to a step increase in wind speed is examined. The commercially available system consists of a cup anemometer and related signal conditioning electronics. It is shown that for ... -
Test of a Calibration Device for Airborne Lyman-α Hygrometers
(American Meteorological Society, 1989)A calibration device was designed to fit over the Lyman-α (LA) probes on the NCAR King Air aircraft to allow the introduction of pure nitrogen, oxygen, and carbon dioxide gases into the probe's radiation path. With these ... -
Errors in the Determination of the Solar Constant by the Langley Method Due to the Presence of Volcanic Aerosol
(American Meteorological Society, 1989)The accuracy in the determination or the solar constant by means of the Langley method is strongly influenced by the spatial inhomogeneities of the atmospheric aerosol. Volcanos frequently inject aerosol into the upper ... -
Radiometric Observations during the Canadian Atlantic Storms Program
(American Meteorological Society, 1989)Radiometrically determined temperature profiles were compared with radiosonde observations during the Canadian Atlantic Storms Program (CASP). A total of 108 profiles were available for the comparison, taken during diverse ... -
Stereoradar Meteorology: A Promising Technique for observation of Precipitation from a Mobile Platform
(American Meteorological Society, 1989)This paper presents a new concept in the measurement of precipitation by radar. The principle consists of stereoscopic observations: the same precipitation cell is observed by two radars operating at the same attenuated ... -
Theoretical Analysis and Meteorological Interpretation of the Role of Raindrop Shape on Microwave Attenuation and Propagation Phase Shifts: Implication for the Radar Measurement of Rain
(American Meteorological Society, 1989)In rain radars can measure various powers of the drop diameter averaged over the drop size distribution. These averages can then be used to infer rain water content (W) or the rainfall rate in still air (R0). Besides being ... -
A Normalization Procedure for METEOSAT Visible Channel Data
(American Meteorological Society, 1989)An efficient normalization scheme for satellite visible channel data is presented. The method is based on the percentile hypothesis. It is applicable to all weather scenes without any need for scene classification and ... -
Computing the Seawater Expansion Coefficients Directly from the 1980 Equation of State
(American Meteorological Society, 1989)The polynomial structure of the 1980 equation of state for seawater lends itself to analytic differentiation with respect to pressure, temperature, and salinity. This enables one to compute the compressibility, thermal ... -
Atmospheric Velocity Spectral Width Measurements Using the Statistical Distribution of Pulsed CO2 Lidar Return Signal Intensities
(American Meteorological Society, 1989)A pulsed CO2 lidar with coherent detection has been used to measure the correlation time of the backscatter of an ensemble of atmospheric aerosol particles which are illuminated by the pulsed radiation. The correlation ... -
The Limiting Accuracy of Long Wavelength Lightning Flash Location
(American Meteorological Society, 1989)Many recently developed systems for lightning flash location use frequencies of hundreds of kHz or higher to achieve enhanced precision, although this reduces potential range. However, for coherent systems operating at ... -
Influence of Meteorological Balloons on Temperature Measurements with Radiosondes: Nighttime Cooling and Daylight Heating
(American Meteorological Society, 1989)Temperatures measured by radiosondes ascending on free-flying balloons within middle latitudes above the troposphere differ significantly from measurements made with the same radiosondes descending on parachutes after the ... -
Estimation by Doppler Radar of Curvature, Diffluence, and Shear in Cyclonic Flow
(American Meteorological Society, 1989)The potential for single-Doppler radar determination of wind field characteristics in cyclonic flow is examined. The influence of the four independent first-order derivatives of a wind field, namely curvature, diffluence, ... -
The IFF: The Isopycnal Float Fluorometer
(American Meteorological Society, 1989)An isopycnal float has been developed which provides a description of water parcel motion and simultaneous measurements of chlorophyll a fluorescence, pressure and temperature along a chosen isopycnal surface. The device ... -
An Efficient Algorithm for Computing the Crossovers in Satellite Altimetry
(American Meteorological Society, 1989)An efficient algorithm has been devised to compute the crossovers in satellite altimetry. The significance of the crossovers is twofold. First they are needed to perform the crossover adjustment to remove the orbit error. ...