Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 4061-4080 of 5084
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Using ADCP Background Sound Levels to Estimate Wind Speed
(American Meteorological Society, 2001)It is well known that ambient sound is generated by wind through the process of wave breaking and bubble injection. The resulting sound levels are highly correlated with wind speed and, even though the physical process is ... -
An Airborne Spectral Albedometer with Active Horizontal Stabilization
(American Meteorological Society, 2001)An airborne albedometer including a low-cost, precise, and fast sensor head horizontal stabilization system was developed to measure spectral down- and upward irradiances between 400- and 1000-nm wavelength. It is installed ... -
Over-Ocean Rainfall Retrieval from Multisensor Data of the Tropical Rainfall Measuring Mission. Part II: Algorithm Implementation
(American Meteorological Society, 2001)The objective of this paper is to establish a computationally efficient algorithm making use of the combination of Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) and precipitation radar (PR) observations. ... -
Validation of the Rain Profiling Algorithm “ZPHI” from the C-Band Polarimetric Weather Radar in Darwin
(American Meteorological Society, 2001)An extensive application of a rain profiling algorithm (ZPHI) employing a C-band polarimetric radar (the C-POL radar of the Australian Bureau of Meteorology Research Centre in Darwin) is presented. ZPHI belongs to the class ... -
An Areal Rainfall Estimator Using Differential Propagation Phase: Evaluation Using a C-Band Radar and a Dense Gauge Network in the Tropics
(American Meteorological Society, 2001)An areal rainfall estimator based on differential propagation phase is proposed and evaluated using the Bureau of Meteorology Research Centre (BMRC) C-POL radar and a dense gauge network located near Darwin, Northern ... -
A Multiparameter Polarimetric Radar Simulator
(American Meteorological Society, 2001)A polarimetric multiparameter radar simulator is described here that is able to reproduce the in-phase and in-quadrature components of the radar echo associated to a population of nonspherical raindrops that is moving under ... -
An Assessment of Droplet Size and Liquid Water Content Derived from Dual-Wavelength Radar Measurements to the Application of Aircraft Icing Detection
(American Meteorological Society, 2001)Multiple parameters are needed to adequately describe the icing condition of clouds, yet those that can be accurately measured using remote sensors are usually limited. In this paper, a detection and classification method ... -
Rainfall Estimation from Polarimetric Radar Measurements: Composite Algorithms Immune to Variability in Raindrop Shape–Size Relation
(American Meteorological Society, 2001)Polarization diversity radar measurements such as reflectivity factor, differential reflectivity, and differential propagation phase are extensively used in rainfall estimation. Algorithms to estimate rainfall from ... -
Errors for Space-Based Doppler Lidar Wind Measurements: Definition, Performance, and Verification
(American Meteorological Society, 2001)Verification of space-based wind measurements will be difficult because of the random variations of the atmospheric velocity field over the measurement volume. The definition of accuracy requires a definition of ?truth.? ... -
Current Meter Performance in the Surf Zone
(American Meteorological Society, 2001)Statistics of the nearshore velocity field in the wind?wave frequency band estimated from acoustic Doppler, acoustic travel time, and electromagnetic current meters are similar. Specifically, current meters deployed 25?100 ... -
Measurements of Surface Seawater fCO2 from Volunteer Commercial Ships: Techniques and Experiences from Skaugran
(American Meteorological Society, 2001)Chemical measurements made in the northern North Pacific from a commercial volunteer observing ship (VOS) program during March 1995?March 1998 are presented. Quasi-continuous measurements of the fugacity of CO2 (fCO2, which ... -
On the Correction of Temperature and Velocity Time Series for Mooring Motion
(American Meteorological Society, 1986)Several schemes for correcting temperature and velocity measurements from moored current meters are tested on two moorings, one of which experienced large vertical excursions as the Gulf Stream meandered over it. The ... -
Impulsively Started Flow in a Submarine Canyon: Comparison of Results from Laboratory and Numerical Models
(American Meteorological Society, 2001)Intercomparisons have been made of results from laboratory experiments and a numerical model for the flow in the vicinity of an idealized submarine canyon located along an otherwise continuous shelf. Motion in the rotating ... -
The ERS Scatterometer Wind Measurement Accuracy: Evidence of Seasonal and Regional Biases
(American Meteorological Society, 2001)A validation of European Space Agency (ESA) remote sensing satellite (ERS) scatterometer ocean wind measurements is performed using a formalism recently proposed for and applied to NASA scatterometer (NSCAT) and Special ... -
A Real-Time Four-Dimensional Doppler Dealiasing Scheme
(American Meteorological Society, 2001)A new dealiasing scheme uses the full four-dimensionality available in an operational Doppler radar data stream. It examines one tilt angle at a time, beginning at the highest elevation where clutter is minimal and ... -
Retrieval of Cirrus Cloud Radiative and Backscattering Properties Using Combined Lidar and Infrared Radiometer (LIRAD) Measurements
(American Meteorological Society, 2001)A method for retrieval of cirrus macrophysical and radiative properties using combined ruby lidar and infrared radiometer measurements is explained in detail. The retrieval algorithm includes estimation of a variable ... -
Listening to Raindrops from Underwater: An Acoustic Disdrometer
(American Meteorological Society, 2001)Different sized raindrops splashing on a water surface produce sound underwater that is distinctive and can be used to measure the drop size distribution in the rain. Five acoustically significant raindrop sizes are ... -
Estimation of Velocity Error for Doppler Lidar Measurements
(American Meteorological Society, 2001)Various methods of estimating the magnitude of the random error of Doppler lidar velocity measurements are compared for typical operating conditions using computer simulations of lidar data. Under certain conditions, the ... -
Eddy Dissipation Rates in Thunderstorms Estimated by Doppler Radar in Relation to Aircraft In Situ Measurements
(American Meteorological Society, 2001)High-resolution aircraft turbulence measurements, well coordinated with radar Doppler spectral width measurements, have been used to verify radar-estimated energy dissipation rates within thunderstorms anvils. The ... -
The Influence of the Sensor Design on Wind Measurements with Sonic Anemometer Systems
(American Meteorological Society, 2001)Responses of Kaijo Denki TR-61A, TR-61B, and TR-61C; Solent Research/Gill; and METEK USA-1 sonic anemometer systems have been examined in a wind tunnel investigation. To determine their characteristics the anemometers were ...