Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 4021-4040 of 5084
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Measurements of Ultragiant Aerosol Particles in the Atmosphere from the Small Cumulus Microphysics Study
(American Meteorological Society, 2002)Ultragiant aerosol particles (UGA) are potentially important for warm rain formation because of their ability to initiate coalescence immediately upon entering a cloud, so it is desirable to obtain local estimates during ... -
The Modular Ocean Data Assimilation System (MODAS)
(American Meteorological Society, 2002)The Modular Ocean Data Assimilation System (MODAS) is used by the U.S. Navy for depiction of three-dimensional fields of temperature and salinity over the global ocean. MODAS includes both a static climatology and a dynamic ... -
Wave Kinematics at High Sea States
(American Meteorological Society, 2002)Measurements of currents close to the ocean surface and within the crests of large, steep waves have been acquired with an incoherent bistatic sonar mounted on the seafloor. The sonar uses a single narrow-beam transmitter/receiver ... -
The Finescale Response of Lowered ADCP Velocity Profiles
(American Meteorological Society, 2002)Lowered acoustic Doppler current profiler (LADCP) velocity profiles are compared with simultaneous higher-resolution expendable current profiler (XCP) profiles to determine the lowered ADCP's response at short wavelengths. ... -
Efficient Inverse Modeling of Barotropic Ocean Tides
(American Meteorological Society, 2002)A computationally efficient relocatable system for generalized inverse (GI) modeling of barotropic ocean tides is described. The GI penalty functional is minimized using a representer method, which requires repeated solution ... -
Numerical Filtering of Spurious Transients in a Satellite Scanning Radiometer: Application to CERES
(American Meteorological Society, 2002)The Clouds and Earth Radiant Energy System (CERES) scanning radiometer was designed to provide high accuracy measurements of the radiances from the earth. Calibration testing of the instruments showed the presence of an ... -
Objective Tropopause Height Determination Using Use-Resolution VHF Radar Observations
(American Meteorological Society, 1986)The magnitude of backscattered power observed at vertical incidence by a VHF radar is related to atmospheric stability in accordance with the Fresnel scattering model. Utilizing a modified Fresnel scattering model, we can ... -
Calibration of a Radome-Differential GPS System on a Twin Otter Research Aircraft for Turbulence Measurements
(American Meteorological Society, 2002)A five-hole radome pressure probe at the nose of a small two-engine newly instrumented research aircraft was combined with global positioning system (GPS) receivers in differential mode to obtain high frequency measurements ... -
Characteristics of the Mirror Image of Precipitation Observed by the TRMM Precipitation Radar
(American Meteorological Society, 2002)A mirror image is a virtual image of precipitation from ?below? the ocean surface when an airborne or a spaceborne radar is used to view rainfall over the ocean. It is due to a reflection of energy from the sea surface to ... -
Comparison of Methods for Estimating Nearshore Shear Wave Variance
(American Meteorological Society, 2002)Shear waves (instabilities of the breaking wave?driven mean alongshore current) and gravity waves both contribute substantial velocity fluctuations to nearshore infragravity motions (periods of a few minutes). Three existing ... -
Synchronous and Asynchronous Integrations in an Ocean General Circulation Model
(American Meteorological Society, 2002)A basinwide ocean general circulation model of the North Pacific is used to study the difference in distributions of tracers between asynchronous and synchronous integrations. An integration in which equal time steps and ... -
Performance Analysis of a Multiprocessor Coupled Ice–Ocean Model for the Baltic Sea
(American Meteorological Society, 2002)Within the Swedish Regional Climate Modelling Programme (SWECLIM) a 3D coupled ice?ocean model for the Baltic Sea has been developed to simulate physical processes on timescales of hours to decades. The model code is based ... -
Comparison of Scatterometer and Radiometer Wind Vector Measurements
(American Meteorological Society, 2002)Coincident measurements with a 37-GHz polarimetric radiometer and a 10-GHz scatterometer during the Coastal Ocean Probing Experiment (COPE) in September and October of 1995 offered a unique opportunity to compare their ... -
Lagrangian Stochastic Modeling in Coastal Oceanography
(American Meteorological Society, 2002)Lagrangian stochastic (LS) modeling is a common technique in atmospheric boundary layer modeling but is relatively new in coastal oceanography. This paper presents some fundamental aspects of LS modeling as they pertain ... -
Extension to 3D of “The Effect of Line Averaging on Scalar Flux Measurements with a Sonic Anemometer near the Surface” by Kristensen and Fitzjarrald
(American Meteorological Society, 2002)Here, the theory of Kristensen and Fitzjarrald, for the transfer function of sonic anemometers for vertical scalar fluxes, is extended from anemometers that use one vertically oriented acoustic path to measure the vertical ... -
Error Estimation of the Synthesized Two-Dimensional Horizontal Velocity in a Bistatic Doppler Radar System
(American Meteorological Society, 2002)This paper estimates the error of the magnitude of a synthesized two-dimensional horizontal velocity vector in a bistatic radar system that is composed of a single transmitter/receiver and a receiver. Two sources of error ... -
Evaluation of Some Ground Truth Designs for Satellite Estimates of Rain Rate
(American Meteorological Society, 2002)In this paper point gauge measurements are analyzed as part of a ground truth design to validate satellite retrieval algorithms at the field-of-view spatial level (typically about 20 km). Even in the ideal case the ground ... -
A Statistical Estimate of Errors in the Calculation of Radio-Occultation Bending Angles Caused by a 2D Approximation of Ray Tracing and the Assumption of Spherical Symmetry of the Atmosphere
(American Meteorological Society, 2002)Atmospheric data from National Centers for Environmental Prediction (NCEP) analyses and orbital parameters from 133 real Global Positioning System (GPS) meteorological data soundings are used to compute the ?true? bending ... -
Mixed and Dynamic Response of Hot Wires and Cold Wires and Measurements of Turbulence Statistics
(American Meteorological Society, 1986)Hot wires respond to temperature as well as to velocity, whereas cold wires respond to velocity as well as to temperature. The static and dynamic response characteristics are summarized and it is shown that the frequency ... -
Automated Retrievals of Water Vapor and Aerosol Profiles from an Operational Raman Lidar
(American Meteorological Society, 2002)Automated routines have been developed to derive water vapor mixing ratio, relative humidity, aerosol extinction and backscatter coefficient, and linear depolarization profiles, as well as total precipitable water vapor ...