Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 1801-1820 of 5084
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Wideband Waveform Design Principles for Solid-State Weather Radars
(American Meteorological Society, 2011)he use of solid-state transmitters is becoming increasingly viable for atmospheric radars and is a key part of the strategy to realize any dense network of low-powered radars. However, solid-state transmitters have low ... -
Determining Size Distributions and Composition of Particles Suspended in Water: A New SEM–EDS Protocol with Validation and Comparison to Other Methods
(American Meteorological Society, 2011)nowledge of particle size distributions (PSDs) in seawater is important for understanding several facets of marine science, such as the behavior of light scattering in seawater, phytoplankton dynamics, and biogeochemical ... -
Aerosol Optical Depth and the Global Brewer Network: A Study Using U.K.- and Malaysia-Based Brewer Spectrophotometers
(American Meteorological Society, 2012)Aerosols play an important role in attenuating solar radiation reaching the earth's surface and are thus important inputs to climate models. Aerosol optical depth is routinely measured in the visible range but little data ... -
Performance of a Wind-Profiling Lidar in the Region of Wind Turbine Rotor Disks
(American Meteorological Society, 2012)s the wind energy sector continues to grow, so does the need for reliable vertical wind profiles in the assessment of wind resources and turbine performance. In situ instrumentation mounted on meteorological towers can ... -
Optimized Determination of Viscous Mud Properties Using a Nonlinear Wave–Mud Interaction Model
(American Meteorological Society, 2011)he complex process of surface wave propagation over areas of cohesive sediments has generally been treated by assuming a particular rheological behavior for the mud layer, thereby fixing the description of the mud ... -
Assessments of Chinese Fengyun Microwave Temperature Sounder (MWTS) Measurements for Weather and Climate Applications
(American Meteorological Society, 2011)fter the successful launches of the first two polar-orbiting satellites in a new Fengyun-3 (FY-3) series, FY-3A/B, into a morning- and afternoon-configured orbit in May 2008 and November 2010, respectively, China will ... -
Parameterization of Runway Visual Range as a Function of Visibility: Implications for Numerical Weather Prediction Models
(American Meteorological Society, 2011)parameterization of runway visual range (RVR) has been developed using relevant meteorological parameters such as visibility (Vk), relative humidity (RH), temperature (T), precipitation intensity (PI), and precipitation ... -
Surface Air Temperature and Humidity from Intersatellite-Calibrated HIRS Measurements in High Latitudes
(American Meteorological Society, 2011)igh-latitude ocean surface air temperature and humidity derived from intersatellite-calibrated High-Resolution Infrared Radiation Sounder (HIRS) measurements are examined. A neural network approach is used to develop ... -
Simplified Active Array L-Band Radar for Atmospheric Wind Profiling: Initial Results
(American Meteorological Society, 2011)simple approach is presented to implement an active aperture radar with a constrained beam-forming network that is adequate enough to generate multiple beams for atmospheric wind profiling. In this approach, elements of ... -
A Hybrid Thresholding Algorithm for Cloud Detection on Ground-Based Color Images
(American Meteorological Society, 2011)loud detection is the precondition for deriving other information (e.g., cloud cover) in ground-based sky imager applications. This paper puts forward an effective cloud detection approach, the Hybrid Thresholding Algorithm ... -
Direct Evidence of a Changing Fall-Rate Bias in XBTs Manufactured during 1986–2008
(American Meteorological Society, 2011)his paper presents direct evidence of systematic depth errors consistent with a fall-rate bias in 52 temperature profiles collected using expendable bathythermographs (XBTs). The profiles were collected using the same ... -
Impact of a Vertical Vorticity Constraint in Variational Dual-Doppler Wind Analysis: Tests with Real and Simulated Supercell Data
(American Meteorological Society, 2011)ne of the greatest challenges to dual-Doppler retrieval of the vertical wind is the lack of low-level divergence information available to the mass conservation constraint. This study examines the impact of a vertical ... -
Drift in Salinity Data from Argo Profiling Floats in the Sea of Japan
(American Meteorological Society, 2011)n drift analysis of salinity sensors, one major problem is the difficulty in delineating sensor drift from water mass changes. In the present study, a new method is proposed for finding sensor drift that is free from water ... -
Validation of Backscatter Measurements from the Advanced Scatterometer on MetOp-A
(American Meteorological Society, 2011)he Advanced Scatterometer (ASCAT) on the Meteorological Operational (MetOp) series of satellites is designed to provide data for the retrieval of ocean wind fields. Three transponders were used to give an absolute calibration ... -
Multilag Correlation Estimators for Polarimetric Radar Measurements in the Presence of Noise
(American Meteorological Society, 2012)he quality of polarimetric radar data degrades as the signal-to-noise ratio (SNR) decreases. This substantially limits the usage of collected polarimetric radar data to high SNR regions. To improve data quality at low SNRs, ... -
Directional Calibration of Wave Reanalysis Databases Using Instrumental Data
(American Meteorological Society, 2011)ave reanalysis databases (WRDBs) offer important advantages for the statistical characterization of wave climate (continuous time series, good spatial coverage, constant time span, homogeneous forcing, and more than a ... -
Radar Backscattering from Snowflakes: Comparison of Fractal, Aggregate, and Soft Spheroid Models
(American Meteorological Society, 2011)he sensitivity of radar backscattering cross sections on different snowflake shapes is studied at C, Ku, Ka, and W bands. Snowflakes are simulated using two complex shape models, namely, fractal and aggregate, and a soft ... -
Analytical Expressions for Doppler Spectra of Scatter from Hydrometeors Observed with a Vertically Directed Radar Beam
(American Meteorological Society, 2011)generalized expression is derived for the correlation function of signals backscattered from hydrometeors observed with a vertically pointed radar beam in which particle size distribution, turbulence, and mean wind are not ... -
An Automated Cirrus Cloud Detection Method for a Ground-Based Cloud Image
(American Meteorological Society, 2012)loud detection is a basic research for achieving cloud-cover state and other cloud characteristics. Because of the influence of sunlight, the brightness of sky background on the ground-based cloud image is usually nonuniform, ... -
Visualizing Model Data Using a Fast Approximation of a Radiative Transfer Model
(American Meteorological Society, 2012)isualizing model forecasts using simulated satellite imagery has proven very useful because the depiction of forecasts using cloud imagery can provide inferences about meteorological scenarios and physical processes that ...