Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 2461-2480 of 5084
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Intercomparison of Nine Micrometeorological Stations during the BEAREX08 Field Campaign
(American Meteorological Society, 2011)and?atmosphere interactions play a critical role in regulating numerous meteorological, hydrological, and environmental processes. Investigating these processes often requires multiple measurement sites representing a range ... -
Significance of the Coupled Term in the Doppler Weather Radar Spectrum Width Equation
(American Meteorological Society, 2011)here is an additional zero mean random variable term that couples mean wind shear and turbulence in the Doppler radar spectrum width equation. This random variable, labeled the ?coupled term,? has been neglected heretofore ... -
Processing Turbulence Data Collected on board the Helicopter Observation Platform (HOP) with the Empirical Mode Decomposition (EMD) Method
(American Meteorological Society, 2011)he Duke University Helicopter Observation Platform (HOP) has previously been shown to be a useful instrument for the measurement of turbulent atmospheric fluxes. As with all such measurements, especially those made from ... -
Particle Habit Imaging Using Incoherent Light: A First Step toward a Novel Instrument for Cloud Microphysics
(American Meteorological Society, 2011)he imaging unit of the novel cloud particle instrument Particle Habit Imaging and Polar Scattering (PHIPS) probe has been developed to image individual ice particles produced inside a large cloud chamber. The PHIPS produces ... -
Optik-É AN-30 Aircraft Laboratory for Studies of the Atmospheric Composition
(American Meteorological Society, 2011)he scientific instrumental complex of the Optik-É AN-30 aircraft laboratory developed at the Institute of Atmospheric Optics of the Siberian Branch of the Russian Academy of Sciences is described in detail. Specifications ... -
Repeat-Sequence Coding for Improved Precision of Doppler Sonar and Sodar
(American Meteorological Society, 1992)Repeat-sequence coding is a robust method for improving the precision of velocity estimates from incoherent Doppler sounders. The method involves transmitting a number of repeats of a broadband ?subcode.? The Doppler shift ... -
ACARS Wind Measurements: An Intercomparison with Radiosonde, Cloud Motion and VAS Thermally Derived Winds
(American Meteorological Society, 1984)Statistical comparisons between winds measured by ACARS and winds obtained from radiosondes, geostationary satellite image cloud motions, and VAS are presented. Observations from three separate comparisons reveal over 60% ... -
A Small High-Sensitivity, Medium-Response Ozone Detector Suitable for Measurements from Light Aircraft
(American Meteorological Society, 1992)An instrument for tropospheric O3 measurements based on the chemiluminescent reaction between nitric oxide and ozone is described. It was designed as part of a larger instrument package for simultaneous measurements of NO, ... -
Determination of Mean Rainfall from the Special Sensor Microwave/Imager (SSM/I) Using a Mixed Lognormal Distribution
(American Meteorological Society, 1992)Global estimates of monthly, seasonal, and annual oceanic rainfall are computed for a period of 1 year using data from the Special Sensor Microwave/Imager (SSM/I). Instantaneous rainfall estimates are derived from brightness ... -
Algorithms for Determination of Rainfall Integral Parameters Using Reflectivity Factor and Mean Doppler Fall Speed at Vertical Incidence
(American Meteorological Society, 1992)Algorithms are presented that can be used to deduce rainfall integral parameters from mean Doppler velocity and reflectivity factor at vertical incidence. Simulations are performed using experimental drop-size spectra to ... -
Cloud Layers, Particle Identification, and Rain-Rate Profiles from ZRVf Measurements by Clear-Air Doppler Radars
(American Meteorological Society, 1992)Networks of radars that point almost vertically and continuously measure the vertical profile of the horizontal wind will, in the future, be operated at many locations around the world. Although such radars are designed ... -
Enclosing Shapes for Single-Doppler Radar Features
(American Meteorological Society, 1992)The primary function of the Terminal Doppler Weather Radar (TDWR) system is to issue microburst alerts when a microburst hazard endangers aircraft. The steps of the algorithm process include 1) determining that a microburst ... -
A New Thermometric Instrument for Airborne Measurements in Clouds
(American Meteorological Society, 1992)A new instrument for measuring the temperature of air in clouds from an aircraft is described. The instrument uses a very fine thermometric sensor located behind a thin rod that protects the sensor from direct contact with ... -
Automatic Estimation of Cloud Amount Using Computer Vision
(American Meteorological Society, 1992)A study was carried out to establish the feasibility of using computer vision to estimate cloud amount. Various techniques were investigated and optimum diagnostic parameters derived. These were then applied to a number ... -
Edge Detection Algorithm for SST Images
(American Meteorological Society, 1992)An algorithm to detect fronts in satellite-derived sea surface temperature fields is presented. Although edge detection is the main focus, the problem of cloud detection is also addressed since unidentified clouds can lead ... -
Quantification of Improvements in an Operational Global-Scale Ocean Thermal Analysis System
(American Meteorological Society, 1992)Global-scale analyses of ocean thermal structure produced operationally at the U.S. Navy's Fleet Numerical Oceanography Center are verified, along with an ocean thermal climatology, against unassimilated bathythermograph ... -
Effects of Instrumented Bottom Tripods on Process Measurements
(American Meteorological Society, 2011)he measurement and assessment of ocean bottom processes are important sources of information for understanding bedform evolution and sediment entrainment and for improving numerical models. Instrumented tripods have been ... -
The Wirewalker: A Vertically Profiling Instrument Carrier Powered by Ocean Waves
(American Meteorological Society, 2010)Ocean wave energy is used to drive a buoyant instrument platform down a wire suspended from a surface float. At the lower terminus of the profiling range, the cam that rectifies wave vertical motion is released and the ... -
Nonlinear Internal Wave Properties Estimated with Moored ADCP Measurements
(American Meteorological Society, 2011)method is developed to estimate nonlinear internal wave (NLIW) vertical displacement, propagation direction, and propagation speed from single moored acoustic Doppler current profiler (ADCP) velocity observations. The ... -
Cotidal Charts near Hawaii Derived from TOPEX/Poseidon Altimetry Data
(American Meteorological Society, 2010)armonic analysis of 10 yr of Ocean Topography Experiment (TOPEX)/Poseidon (T/P) along-track altimetry is performed to derive the semidiurnal and diurnal tides (M2, S2, N2, K2, K1, O1, P1, and Q1) near Hawaii. The T/P ...