Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 2941-2960 of 5084
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Dust Aerosol Optical Depth Retrieval over a Desert Surface Using the SEVIRI Window Channels
(American Meteorological Society, 2009)The authors present a new algorithm to retrieve aerosol optical depth (AOD) over a desert using the window channels centered at 8.7, 10.8, and 12.0 ?m of the Spinning Enhanced Visible and Infrared Imager (SEVIRI) instrument ... -
A Combined Wind Profiler and Polarimetric Weather Radar Method for the Investigation of Precipitation and Vertical Velocities
(American Meteorological Society, 2009)A method is presented by which combined S-band polarimetric weather radar and UHF wind profiler observations of precipitation can be used to extract the properties of liquid phase hydrometeors and the vertical velocity of ... -
Orthogonal Channel Coding for Simultaneous Co- and Cross-Polarization Measurements
(American Meteorological Society, 2009)Dual-polarization weather radars typically measure the radar reflectivity at more than one polarization state for transmission and reception. Historically, dual-polarization radars have been operated at copolar and cross-polar ... -
Snowflake Size Spectra Retrieved from a UHF Vertical Profiler
(American Meteorological Society, 2009)This paper develops a technique for retrieving snowflake size distributions (SSDs) from a vertically pointing 915-MHz vertical profiler. Drop size distributions (DSDs) have been retrieved from 915-MHz profilers for several ... -
Effects of Multiple Scattering on Attenuation-Based Retrievals of Stratiform Rainfall from CloudSat
(American Meteorological Society, 2008)An attenuation-based method to retrieve vertical profiles of rainfall rates from height derivatives/gradients of CloudSat nadir-pointing W-band reflectivity measurements is discussed. This method takes advantage of the ... -
Effects of TRMM Boost on Oceanic Rainfall Estimates Based on Microwave Emission Brightness Temperature Histograms (METH)
(American Meteorological Society, 2008)A physical?statistical algorithm for estimating space?time average oceanic rainfall has been applied to microwave measurements taken by the Special Sensor Microwave Imager (SSM/I) on board the Defense Meteorological Satellite ... -
Theory and Characterization of Weather Radar Networks
(American Meteorological Society, 2009)A dense weather radar network is an emerging concept advanced by the Engineering Research Center for Collaborative Adaptive Sensing of the Atmosphere (CASA). In a weather radar environment, the specific radar units employed ... -
Influence of Ground Clutter Contamination on Polarimetric Radar Parameters
(American Meteorological Society, 2009)The influence of ground clutter contamination on the estimation of polarimetric radar parameters, horizontal reflectivity (Zh), differential reflectivity (Zdr), correlation coefficient (?h?), and differential propagation ... -
Clutter Suppression for Staggered PRT Waveforms
(American Meteorological Society, 2008)This paper presents a clutter suppression methodology for staggered pulse repetition time (PRT) observations. It is shown that spectral moments of precipitation echoes can be accurately estimated even in cases where ... -
Spatially Distributed Measurements of Platform Motion for the Correction of Ship-Based Turbulent Fluxes
(American Meteorological Society, 2008)A method for determining the angular offsets between measurement axes for multiple motion sensing systems and a sonic anemometer using underway data is demonstrated. This enables a single angular rate sensor to be used ... -
Exploring Atmospheric Aerosols by Twilight Photometry
(American Meteorological Society, 2008)The instrument twilight photometer was designed, developed, and installed at the Indian Institute of Tropical Meteorology (IITM), Pune, India (18°43?N, 73°51?E), to monitor the vertical distribution of atmospheric aerosols. ... -
Sampling Strategies for Tornado and Mesocyclone Detection Using Dynamically Adaptive Doppler Radars: A Simulation Study
(American Meteorological Society, 2009)Increasing tornado and severe storm warning lead time (lead time is defined here as the elapsed time between the issuance of a watch or warning and the time at which the anticipated weather event first impacts the specified ... -
3D Convective Storm Identification, Tracking, and Forecasting—An Enhanced TITAN Algorithm
(American Meteorological Society, 2009)Storm identification, tracking, and forecasting make up an essential part of weather radar and severe weather surveillance operations. Existing nowcasting algorithms using radar data can be generally classified into two ... -
Multipass Objective Analyses of Doppler Radar Data
(American Meteorological Society, 2008)This note assesses the improvements in dual-Doppler wind syntheses by employing a multipass Barnes objective analysis in the interpolation of radial velocities to a Cartesian grid, as opposed to a more typical single-pass ... -
The Stabilized Radiometer Platform (STRAP)—An Actively Stabilized Horizontally Level Platform for Improved Aircraft Irradiance Measurements
(American Meteorological Society, 2008)Measurements of solar and infrared irradiance by instruments rigidly mounted to an aircraft have historically been plagued by the introduction of offsets and fluctuations into the data that are solely due to the pitch and ... -
Radar Reflectivity–Based Estimates of Mixed Layer Depth
(American Meteorological Society, 2009)This study investigates the potential for estimating mixed layer depth by taking advantage of the radial gradients in the radar reflectivity field produced by the large vertical gradients in water vapor mixing ratio that ... -
Microwave and Millimeter-Wave Radiometric and Radiosonde Observations in an Arctic Environment
(American Meteorological Society, 2008)In a recent paper by Mattioli et al., a significant difference was observed between upper-tropospheric and lower-stratospheric water vapor profiles as observed by two radiosonde systems operating in the Arctic. The first ... -
Orientation Angle Distributions of Drops after an 80-m Fall Using a 2D Video Disdrometer
(American Meteorological Society, 2008)This note reports on the use of a 2D video disdrometer to estimate the orientation of drops (>2 mm) that were generated artificially and allowed to fall 80 m from a bridge with no obstruction and under calm conditions. ... -
Worldwide Measurements of Atmospheric CO2 and Other Trace Gas Species Using Commercial Airlines
(American Meteorological Society, 2008)New automated observation systems for use in passenger aircraft to measure atmospheric carbon dioxide (CO2) and other trace species have been developed and are described in this paper. The Continuous CO2 Measuring Equipment ... -
On the Possible Use of Copolar Correlation Coefficient for Improving the Drop Size Distribution Estimates at C Band
(American Meteorological Society, 2008)A decrease in copolar correlation coefficient (?co) at C band has been observed for several rain events with broad drop size distributions (DSDs). Observational evidence comes from simultaneous measurements with a C-band ...