Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 3901-3920 of 5084
-
Operational Validation of the MOPITT Instrument Optical Filters
(American Meteorological Society, 2002)Optical bandpass filters in the Measurements of Pollution in the Troposphere (MOPITT) satellite remote sensing instrument selectivity limit the throughput radiance to absorptive spectral bands associated with the ... -
Improved Tornado Detection Using Simulated and Actual WSR-88D Data with Enhanced Resolution
(American Meteorological Society, 2002)The magnitude of the Doppler velocity signature of a tornado depends on the effective width of the radar beam relative to the size of the tornado. The effective beamwidth is controlled by the antenna pattern beamwidth and ... -
Convective Boundary Layer Depth: Improved Measurement by Doppler Radar Wind Profiler Using Fuzzy Logic Methods
(American Meteorological Society, 2002)A new method for estimating the mixing depth of the atmosphere's convective boundary layer is developed for use with wind-profiling radars. This method applies ?fuzzy logic? methods to give an improved determination of the ... -
An Improvement in the Calculation of ADCP Velocities
(American Meteorological Society, 2002)Acoustic Doppler current profilers are used to measure currents in a variety of aquatic conditions. When nonzero pitch and roll angles occur, a number of complications arise in the conversion from beam velocities, which ... -
The Influence of Open versus Periodic Alongshore Boundaries on Circulation near Submarine Canyons
(American Meteorological Society, 2002)It is impractical to create gridded numerical models of coastal circulation with sufficient resolution around small topographic features, such as submarine canyons, and still have the alongshore boundaries placed beyond ... -
A Simple System for Mapping Conductivity Microstructure
(American Meteorological Society, 1986)A system for spatial mapping of the temperature variance dissipation rate ? based on conductivity micro-structure measurements from a towyo platform is described. The spatial response of the microconductivity probe is ... -
The Oceanic Remote Chemical/Optical Analyzer (ORCA)—An Autonomous Moored Profiler
(American Meteorological Society, 2002)An autonomous, moored profiler [the Oceanic Remote Chemical/Optical Analyzer (ORCA)] was developed to sense a variety of chemical and optical properties in the upper water column. It is presently used to monitor water ... -
Improving Nonparametric Estimates of the Sea State Bias in Radar Altimeter Measurements of Sea Level
(American Meteorological Society, 2002)A fully nonparametric (NP) version of the sea state bias (SSB) estimation problem in radar altimetry was first presented and solved by Gaspar and Florens (GF) using the statistical technique of kernel smoothing. This ... -
Ocean Currents from Successive Satellite Images: The Reciprocal Filtering Technique
(American Meteorological Society, 2002)Cross-correlation analyses of successive satellite images of the ocean surface can provide estimates of surface currents by tracking features of temperature or ocean color. While the technique successfully identifies many ... -
Extracting Multiyear Surface Currents from Sequential Thermal Imagery Using the Maximum Cross-Correlation Technique
(American Meteorological Society, 2002)Ocean surface circulation can be estimated by automated tracking of thermal infrared features in pairs of sequential satellite imagery. A 7-yr time series of velocity, extracted from thermal imagery of the East Australian ... -
Combining Inverted Echo Sounder and Horizontal Electric Field Recorder Measurements to Obtain Absolute Velocity Profiles
(American Meteorological Society, 2002)Profiles of absolute velocity are difficult to obtain in the ocean, especially over long periods of time at the same location. This paper presents a method of estimating full water column absolute horizontal velocity ... -
Results of One Year of Preoperational Production of Sea Surface Temperatures from GOES-8
(American Meteorological Society, 2002)Routine calculations of sea surface temperatures (SSTs) from Geostationary Operational Environmental Satellite-8 (GOES-8, also known as GOES-East) data have been made at the Centre de Météorologie Spatiale (CMS) of ... -
On the Mapping of Multivariate Geophysical Fields: Sensitivities to Size, Scales, and Dynamics
(American Meteorological Society, 2002)The effects of a priori parameters on the error subspace estimation and mapping methodology introduced by P. F. J. Lermusiaux et al. is investigated. The approach is three-dimensional, multivariate, and multiscale. The ... -
Analysis of Broadband Solar Radiation and Albedo over the Ocean Surface at COVE
(American Meteorological Society, 2002)A coupled atmosphere?ocean radiative transfer model has been applied to analyze a full year of broadband solar irradiances (up and down) measured over an ocean site 25 km east of the coast of Virginia in the Atlantic. The ... -
Wind Tunnel Tests of the Airborne PVM-100A Response to Large Droplets
(American Meteorological Society, 2002)The Gerber Scientific, Inc. Particle Volume Monitor (PVM) is widely used to measure the liquid water content (LWC) and droplet effective radius (reff) of water clouds. The LWC response of the airborne version of this ... -
Aerodynamic Effects on Wind Turbulence Measurements with Research Aircraft
(American Meteorological Society, 2002)Flow distortion is a major issue in the measurement of wind turbulence with gust probes mounted on a nose boom, at the radome, or under the wing of research aircraft. In this paper, the effects both of the propellers of a ... -
A New Technique for the Study of Cloud Microstructure
(American Meteorological Society, 1986)A technique is described by which the spacing of cloud particles can be measured using existing data from a cloud particle measurement probe. The monitor circuit used in this application is inexpensive and easy to build ... -
A Miniature Optical Particle Counter for In Situ Aircraft Aerosol Research
(American Meteorological Society, 2002)Modification of a commercial Met One 237A optical sensor to accept custom electronics consisting of a single logarithmic amplifier providing 256 size bins over the 0.3?14-?m diameter range is described. Configuration of ... -
An Automobile Platform for the Measurement of Foehn and Gap Flows
(American Meteorological Society, 2002)An instrument package to measure temperature, pressure, humidity, and position was designed to be quickly deployable on any automobile to be used for the study of gap and other orographically influenced flows. Differential ... -
A High-Precision Fast-Response Airborne CO2 Analyzer for In Situ Sampling from the Surface to the Middle Stratosphere
(American Meteorological Society, 2002)Two in situ CO2 analyzers have been developed for deployment on the NASA ER-2 aircraft and on stratospheric balloons. The ER-2 instrument has had more than 150 flights during 21 deployments from 1992 to 2000, resulting in ...