Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 2921-2940 of 5084
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The Effect of Storm Life Cycle on Satellite Rainfall Estimation Error
(American Meteorological Society, 2009)The study uses storm tracking information to evaluate error statistics of satellite rain estimation at different maturity stages of storm life cycles. Two satellite rain retrieval products are used for this purpose: (i) ... -
On the Correction of Partial Beam Blockage in Polarimetric Radar Data
(American Meteorological Society, 2009)Three methodologies for correcting the radar reflectivity factor (ZH) in the presence of partial beam blockage are implemented, compared, and evaluated using a polarimetric radar dataset from the North American Monsoon ... -
Trends in Twentieth-Century U.S. Snowfall Using a Quality-Controlled Dataset
(American Meteorological Society, 2009)A quality assessment of daily manual snowfall data has been undertaken for all U.S. long-term stations and their suitability for climate research. The assessment utilized expert judgment on the quality of each station. ... -
Importance of Using Observations of Mixing Depths in order to Avoid Large Prediction Errors by a Transport and Dispersion Model
(American Meteorological Society, 2009)The mixing depth of the boundary layer is an input to most atmospheric transport and dispersion (ATD) models, which obtain mixing depths in one of four ways: 1) observations by radiosondes, sodars, or other devices; 2) ... -
Does an Increase in Air Quality Models’ Resolution Bring Surface Ozone Concentrations Closer to Reality?
(American Meteorological Society, 2008)A persistent challenge for small-scale air quality modeling is the assessment of health impact and population exposure studies. Despite progress in computation and in the quality of model input (i.e., high-resolution ... -
Investigation of Non-Gaussian Doppler Spectra Observed by Weather Radar in a Tornadic Supercell
(American Meteorological Society, 2009)Radar Doppler spectra that deviate from a Gaussian shape were observed from a tornadic supercell on 10 May 2003, exhibiting features such as a dual peak, flat top, and wide skirt in the nontornadic region. Motivated by ... -
An Analysis of the Performance of the UFAM Pulsed Doppler Lidar for Observing the Boundary Layer
(American Meteorological Society, 2009)The performance of the 1.5-?m pulsed Doppler lidar, operated by the U.K. Universities Facility for Atmospheric Measurement (UFAM) over a 51-day continuous and unattended field deployment in southern England, is described ... -
Discontinuity Issues with Radiosonde and Satellite Temperatures in the Australian Region 1979–2006
(American Meteorological Society, 2009)The temperature records of 28 Australian radiosonde stations were compared with the bulk-layer temperatures of three satellite products of The University of Alabama in Huntsville (UAH) and Remote Sensing Systems (RSS) for ... -
Estimating the Evaporative Cooling Bias of an Airborne Reverse Flow Thermometer
(American Meteorological Society, 2009)Airborne reverse flow immersion thermometers were designed to prevent sensor wetting in cloud. Yet there is strong evidence that some wetting does occur and therefore also sensor evaporative cooling as the aircraft exits ... -
Lidar-Based Estimation of Small-Scale Rainfall: Empirical Evidence
(American Meteorological Society, 2009)A significant scale gap between radar and in situ measurements of rainfall using rain gauges and disdrometers indicates a pressing need for improved knowledge of rainfall variability at the spatial scales below those of ... -
Detecting Source Regions of Wave Activities in the Tropical Atmosphere by Applying Beamforming to Interpolated Data Grids
(American Meteorological Society, 2009)Wave activities are primary sources of weather disturbances and cyclones in the tropical atmosphere. One such activity is the intraseasonal variations in wind, convection, and precipitation in the tropical Indian and western ... -
Measuring the Wind Vector Using the Autonomous Mini Aerial Vehicle M2AV
(American Meteorological Society, 2008)The meteorological mini unmanned aerial vehicle (M2AV) was used for measuring the meteorological wind. The wind is the vector difference between the aircraft speed relative to the earth (inertial velocity) and relative to ... -
A Variational Correction Method as an Alternative to Forced Rejection of Sidelobe-Contaminated Bistatic Doppler Measurements
(American Meteorological Society, 2008)The problem of sidelobe contamination of bistatic apparent Doppler velocity measurements involved in a bistatic Doppler radar network is examined. So far in the context of 3D wind field analysis, by combining a traditional ... -
Three-Dimensional Wind Retrieval: Application of MUSCAT to Dual-Doppler Lidar
(American Meteorological Society, 2009)During the field campaign of the Terrain-induced Rotor Experiment (T-REX) in the spring of 2006, Doppler lidar measurements were taken in the complex terrain of the Californian Owens Valley for six weeks. While fast ... -
Polarimetric Spectral Filter for Adaptive Clutter and Noise Suppression
(American Meteorological Society, 2009)In this paper, spectral decompositions of differential reflectivity, differential phase, and copolar correlation coefficient are used to discriminate between weather and nonweather signals in the spectral domain. This ... -
Ten Years of TRMM/VIRS On-Orbit Calibrations and Multiyear Comparisons of VIRS and MODIS
(American Meteorological Society, 2008)After 10 years of successful operation of the Tropical Rainfall Measuring Mission (TRMM)/Visible Infrared Scanner (VIRS), based on sensor performance, the authors have reexamined the calibration algorithms and identified ... -
Evaluation of DBS Wind Measurement Technique in Different Beam Configurations for a VHF Wind Profiler
(American Meteorological Society, 2008)Atmospheric winds in the troposphere have been observed routinely for many years with wind profiling (VHF and UHF) radars using the Doppler beam swinging (DBS) technique. Accuracy of wind estimates using wind profiling ... -
Correction of Humidity Bias for Vaisala RS80-A Sondes during the AMMA 2006 Observing Period
(American Meteorological Society, 2008)During the African Monsoon Multidisciplinary Analyses (AMMA) program, which included a special observing period that took place over West Africa in 2006, a major effort was devoted to monitor the atmosphere and its water ... -
A Blackbody Design for SI-Traceable Radiometry for Earth Observation
(American Meteorological Society, 2008)Spaceborne measurements pinned to international standards are needed to monitor the earth?s climate, quantify human influence thereon, and test forecasts of future climate change. The International System of Units (SI, ... -
Turbulence and Wind Shear in Layers of Large Doppler Spectrum Width in Stratiform Precipitation
(American Meteorological Society, 2009)Weather radar observations of stratiform precipitation often reveal regions having very large measured Doppler spectrum widths, exceeding 7, and sometimes 10, m s?1. These widths are larger than those typically found in ...