Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 2081-2100 of 5084
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Retrieving Cloud Characteristics from Ground-Based Daytime Color All-Sky Images
(American Meteorological Society, 2006)A discussion is presented of daytime sky imaging and techniques that may be applied to the analysis of full-color sky images to infer cloud macrophysical properties. Descriptions of two different types of sky-imaging systems ... -
Assimilation of Ice Concentration in an Ice–Ocean Model
(American Meteorological Society, 2006)Ice concentration is a critical parameter of the polar marine environment because of the large effect sea ice has on the surface albedo and heat exchange between the atmosphere and the ocean. Simulations of the energy ... -
Comparison of Collocated Automated (NCECONet) and Manual (COOP) Climate Observations in North Carolina
(American Meteorological Society, 2006)The National Weather Service's Cooperative Observer Program (COOP) is a valuable climate data resource that provides manually observed information on temperature and precipitation across the nation. These data are part of ... -
Forward-in-Time-/Backward-in-Time-Trajectory (FITT/BITT) Modeling of Particles and Organisms in the Coastal Ocean
(American Meteorological Society, 2006)Lagrangian particle-tracking models (LPTMs) were used to identify sources, destinations, and transport pathways of particles (plankton). The LPTM simulations were forced using stored fields from the Spectral Element Ocean ... -
Calibration Technique for Polarization-Sensitive Lidars
(American Meteorological Society, 2006)Polarization-sensitive lidars have proven to be highly effective in discriminating between spherical and nonspherical particles in the atmosphere. These lidars use a linearly polarized laser and are equipped with a receiver ... -
Characterization and Evaluation of Hybrid Polarization Observation of Precipitation
(American Meteorological Society, 2006)Transmitting an arbitrary state of polarization while receiving horizontal?vertical polarization states is termed the hybrid polarization mode of operation. A theoretical model is developed for hybrid mode dual-polarization ... -
IAC ETH Goniospectrometer: A Tool for Hyperspectral HDRF Measurements
(American Meteorological Society, 2006)This work presents a new field goniospectrometer developed at the Institute for Atmospheric and Climate Science (IAC) of the Swiss Federal Institute of Technology (ETH; Switzerland). The goniospectrometer was built to study ... -
A Lightweight Observation System for Atmospheric Carbon Dioxide Concentration Using a Small Unmanned Aerial Vehicle
(American Meteorological Society, 2006)To make the investigation of the temporal and spatial variations of atmospheric CO2 in and above the planetary boundary layer more flexible and economical, a lightweight observation system using a small unmanned aerial ... -
Calibrating the Spatial Response of Bio-Optical Sensors
(American Meteorological Society, 2006)This article describes an experimental method used to establish the spatial wavenumber response of in situ fluorometers. The method is applied to a fluorometer developed to measure the structure of the fluorescence field ... -
Low-Frequency Sea Level Variability and the Inverted Barometer Effect
(American Meteorological Society, 2006)For a dynamical interpretation of sea level records, estimates are needed of the isostatic, or so-called inverted barometer, signals (?ib) associated with the ocean response to atmospheric loading. Seasonal and longer-period ... -
The Promise of Load Balancing the Parameterization of Moist Convection Using a Model Data Load Index
(American Meteorological Society, 2006)The parameterization of physical processes in atmospheric general circulation models contributes to load imbalances among individual processors of message-passing distributed-multiprocessor systems. Load imbalances increase ... -
Phased-Array Design for Biological Clutter Rejection: Simulation and Experimental Validation
(American Meteorological Society, 2006)This paper highlights recent results obtained with the Turbulent Eddy Profiler (TEP), which was developed by the University of Massachusetts. This unique 915-MHz radar has up to 64 spatially separated receiving elements, ... -
Continuous Humidity Monitoring in a Tropical Region with the Equatorial Atmosphere Radar
(American Meteorological Society, 2006)A radar remote sensing technique that estimates humidity profiles using a wind profiler is applied to the equatorial atmosphere radar (EAR) to monitor detailed humidity variations in tropical regions. Turbulence echo power ... -
Quantifying the Airflow Distortion over Merchant Ships. Part I: Validation of a CFD Model
(American Meteorological Society, 2006)The effects of flow distortion created by the ship?s hull and superstructure bias wind speed measurements made from anemometers located on ships. Flow distortion must be taken into account if accurate air?sea flux measurements ... -
Development and Tests of a New Distributed-Memory MM5 Adjoint
(American Meteorological Society, 2006)Updated versions of the Tangent Linear Model (TLM) and adjoint of the fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model (MM5) have been developed and are now available ... -
Quantifying the Airflow Distortion over Merchant Ships. Part II: Application of the Model Results
(American Meteorological Society, 2006)Wind speed measurements obtained from ship-mounted anemometers are biased by the presence of the ship, which distorts the airflow to the anemometer. Previous studies have simulated the flow over detailed models of individual ... -
In Situ Atmospheric Turbulence Measurement Using the Terrestrial Magnetic Field—A Compass for a Radiosonde
(American Meteorological Society, 2006)A method for in situ detection of atmospheric turbulence has been developed using an inexpensive sensor carried within a conventional meteorological radiosonde. The sensor?a Hall effect magnetometer?was used to monitor the ... -
Assimilation of Directional Wave Spectra in the Wave Model WAM: An Impact Study from Synthetic Observations in Preparation for the SWIMSAT Satellite Mission
(American Meteorological Society, 2006)Within the framework of the Surface Waves Investigation and Monitoring from Satellite mission (SWIMSAT) proposed to the European Space Agency, an assimilation scheme has been implemented in the Wave Model (WAM) in order ... -
Correlation Coefficients between Horizontally and Vertically Polarized Returns from Ground Clutter
(American Meteorological Society, 2006)Characteristics of the magnitude and phase of correlation coefficients between horizontally and vertically polarized returns from ground clutter echoes are quantified by analyzing histograms obtained with an 11-cm wavelength ... -
Effective Radius of Ice Cloud Particle Populations Derived from Aircraft Probes
(American Meteorological Society, 2006)The effective radius (re) is a crucial variable in representing the radiative properties of cloud layers in general circulation models. This parameter is proportional to the condensed water content (CWC) divided by the ...