Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 1941-1960 of 5084
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Examination of the μ–Λ Relation Suggested for Drop Size Distribution Parameters
(American Meteorological Society, 2007)Raindrop size distributions are often assumed to follow a three-parameter gamma distribution. Since rain intensity retrieval from radar observations is an underdetermined problem, there is great interest in finding physical ... -
Measuring Global Ocean Wave Skewness by Retracking RA-2 Envisat Waveforms
(American Meteorological Society, 2007)For early satellite altimeters, the retrieval of geophysical information (e.g., range, significant wave height) from altimeter ocean waveforms was performed on board the satellite, but this was restricted by computational ... -
Comparison of Plotting Methods for Solar Radiometer Calibration
(American Meteorological Society, 2007)An alternative formulation of the Langley plot relating observed solar irradiance, extraterrestrial solar irradiance, and air mass has been suggested to potentially improve radiometer calibration accuracy. In this study, ... -
Analyzing Monthly Extreme Sea Levels with a Time-Dependent GEV Model
(American Meteorological Society, 2007)A statistical model to analyze different time scales of the variability of extreme high sea levels is presented. This model uses a time-dependent generalized extreme value (GEV) distribution to fit monthly maxima series ... -
Comparison of Pyranometric and Pyrheliometric Methods for the Determination of Sunshine Duration
(American Meteorological Society, 2007)Two pyranometric methods for the determination of sunshine duration (SD) from global irradiance measurements are evaluated by means of summated sunshine seconds derived from pyrheliometric measurements in combination with ... -
STRAT: An Automated Algorithm to Retrieve the Vertical Structure of the Atmosphere from Single-Channel Lidar Data
(American Meteorological Society, 2007)Today several lidar networks around the world provide large datasets that are extremely valuable for aerosol and cloud research. Retrieval of atmospheric constituent properties from lidar profiles requires detailed analysis ... -
Calibration of Sun Radiometer–Based Atmospheric Water Vapor Retrievals Using GPS Meteorology
(American Meteorological Society, 2007)A study of the validation and calibration process for integrated water vapor (IWV) measurements derived from sun radiometry at the 940-nm solar absorption channel employed in the Aerosol Robotic Network (AERONET) Aerosol ... -
Spaced-Antenna Interferometry to Measure Crossbeam Wind, Shear, and Turbulence: Theory and Formulation
(American Meteorological Society, 2007)The theory of measuring crossbeam wind, shear, and turbulence within the radar?s resolution volume V6 is described. Spaced-antenna weather radar interferometry is formulated for such measurements using phased-array weather ... -
On the Equivalence of Dual-Wavelength and Dual-Polarization Equations for Estimation of the Raindrop Size Distribution
(American Meteorological Society, 2007)For air- and spaceborne weather radars, which typically operate at frequencies of 10 GHz and above, attenuation correction is usually an essential part of any rain estimation procedure. For ground-based radars, where the ... -
Advancements in Techniques for Calibration and Characterization of In Situ Optical Particle Measuring Probes, and Applications to the FSSP-100 Probe
(American Meteorological Society, 2007)Advancements in techniques for the operational calibration and characterization of instrument performance of the Particle Measuring Systems, Inc. (PMS), forward scattering spectrometer probe (FSSP) and optical array probes ... -
Intercomparisons of Stratospheric Water Vapor Sensors: FLASH-B and NOAA/CMDL Frost-Point Hygrometer
(American Meteorological Society, 2007)Studies of global climate rely critically on accurate water vapor measurements. In this paper, a comparison of the NOAA/Climate Monitoring and Diagnostics Laboratory (CMDL) frost-point hygrometer and the Fluorescent Advanced ... -
Performance of Quality Assurance Procedures on Daily Precipitation
(American Meteorological Society, 2007)The search for precipitation quality control (QC) methods has proven difficult. The high spatial and temporal variability associated with precipitation data causes high uncertainty and edge creep when regression-based ... -
Four-Dimensional Dynamic Radar Mosaic
(American Meteorological Society, 2007)Communities and many industries are affected by severe weather and have a need for real-time accurate Weather Surveillance Radar-1988 Doppler (WSR-88D) data spanning several regions. To fulfill this need the National Severe ... -
The Impact of Beam Broadening on the Quality of Radar Polarimetric Data
(American Meteorological Society, 2007)The impact of beam broadening on the quality of radar polarimetric data in the presence of nonuniform beam filling (NBF) is examined both theoretically and experimentally. Cross-beam gradients of radar reflectivity Z, ... -
An Approach for Retrieving Marine Boundary Layer Refractivity from GPS Occultation Data in the Presence of Superrefraction
(American Meteorological Society, 2006)The global positioning system (GPS) radio occultation (RO) technique has demonstrated the ability to precisely probe earth?s atmosphere globally with high vertical resolution. However, the lowermost troposphere still ... -
Interpretation of Coastal HF Radar–Derived Surface Currents with High-Resolution Drifter Data
(American Meteorological Society, 2007)Dense arrays of surface drifters are used to quantify the flow field on time and space scales over which high-frequency (HF) radar observations are measured. Up to 13 drifters were repetitively deployed off the Santa Barbara ... -
Current Patterns on the West Florida Shelf from Joint Self-Organizing Map Analyses of HF Radar and ADCP Data
(American Meteorological Society, 2007)To assess the spatial structures and temporal evolutions of distinct physical processes on the West Florida Shelf, patterns of ocean current variability are extracted from a joint HF radar and ADCP dataset acquired from ... -
Choosing the Smoothing Parameters within a Multiple-Pass Barnes Objective Analysis Scheme: A Cautionary Note
(American Meteorological Society, 2007)Various combinations of smoothing parameters within a two-pass Barnes objective analysis scheme are applied to analytic observations obtained by regular and irregular sampling of a one-dimensional sinusoidal analytic wave ... -
Mesoscale Numerical Weather Prediction Models Used in Support of Infrared Hyperspectral Measurement Simulation and Product Algorithm Development
(American Meteorological Society, 2007)A novel application of numerical weather prediction (NWP) models within an end-to-end processing system used to demonstrate advanced hyperspectral satellite technologies and instrument concepts is presented. As part of ... -
Field Verification of ADCP Surface Gravity Wave Elevation Spectra
(American Meteorological Society, 2007)Acoustic Doppler current profilers (ADCPs) can measure orbital velocities induced by surface gravity waves, yet the ADCP estimates of these velocities are subject to a relatively high noise level. The present paper introduces ...