Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 2721-2740 of 5084
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Inexpensive Time-Lapse Digital Cameras for Studying Transient Meteorological Phenomena: Dust Devils and Playa Flooding
(American Meteorological Society, 2010)The authors describe the design and performance of inexpensive and compact time-lapse cameras suitable for field deployment in remote locations for long periods and their application to studying two time-variable meteorological ... -
On the Use of Slow Ascent Meter-Scale Sampling (SAMS) Radiosondes for Observing Overturning Events in the Free Atmosphere
(American Meteorological Society, 2009)This note describes the development of a method for obtaining high vertical resolution (meter scale) measurements of basic meteorological quantities and turbulent overturns, using radiosondes with slow ascent rates. Although ... -
Radiometric and Spectral Characteristics of the ScaRaB-3 Instrument on Megha-Tropiques: Comparisons with ERBE, CERES, and GERB
(American Meteorological Society, 2010)The Indian?French Megha-Tropiques mission, scheduled to be launched in 2010, will carry radiation and microwave sensors to study the energy and water cycle in the tropics. The radiation sensor, the third model of the Scanner ... -
Comparison of the Infrared Surface Emissivity Model (ISEM) with a Physical Emissivity Model
(American Meteorological Society, 2010)Accurate models of surface emissivity are important for interpreting satellite radiance observations. Surface emissivity depends on the satellite zenith angle, roughness, polarization, and refractive index of the surface. ... -
Microwave Radiometer Calibration on Decadal Time Scales Using On-Earth Brightness Temperature References: Application to the TOPEX Microwave Radiometer
(American Meteorological Society, 2009)A method is described to calibrate a satellite microwave radiometer operating near 18?37 GHz on decadal time scales for the purposes of climate studies. The method uses stable on-earth brightness temperature references ... -
The Airborne Demonstrator for the Direct-Detection Doppler Wind Lidar ALADIN on ADM-Aeolus. Part I: Instrument Design and Comparison to Satellite Instrument
(American Meteorological Society, 2009)The global observation of profiles of the atmospheric wind speed is the highest-priority unmet need for global numerical weather prediction. Satellite Doppler lidar is the most promising candidate to meet the requirements ... -
Portable Raman Lidar PollyXT for Automated Profiling of Aerosol Backscatter, Extinction, and Depolarization
(American Meteorological Society, 2009)Two versions of the portable aerosol Raman lidar system (Polly) are presented. First, the two-channel prototype is depicted. It has been developed for the independent and simultaneous determination of particle backscatter ... -
The Radiometric Sensitivity Requirements for Satellite Microwave Temperature Sounding Instruments for Numerical Weather Prediction
(American Meteorological Society, 2010)The sensitivity of NWP forecast accuracy with respect to the radiometric performance of microwave sounders is assessed through a series of observing system experiments at the Met Office and ECMWF. The observing system ... -
Joint Calibration of Multiplatform Altimeter Measurements of Wind Speed and Wave Height over the Past 20 Years
(American Meteorological Society, 2009)Since 1985, for a period of more than 23 yr, seven altimeter missions have provided global coverage of significant wave height and wind speed. This study undertakes a long-term analysis of the accuracy and stability of ... -
Extended Application of a Novel Phase Calibration Approach of Multiple-Frequency Range Imaging to the Chung-Li and MU VHF Radars
(American Meteorological Society, 2009)Multiple-frequency range imaging (RIM), designed to improve the range resolution of radar echo distribution, is now available for the recently upgraded Chung-Li VHF radar (24.9°N, 121.1°E). To complete the RIM technique ... -
Airborne Doppler Lidar Investigation of Sea Surface Reflectance at a 355-nm Ultraviolet Wavelength
(American Meteorological Society, 2009)The analysis of the sea surface reflectance for different incidence angles based on observations of an airborne Doppler lidar at an ultraviolet wavelength of 355 nm is described. The results were compared to sea surface ... -
The CASA Integrated Project 1 Networked Radar System
(American Meteorological Society, 2010)This paper describes the Collaborative Adaptive Sensing of the Atmosphere (CASA) Integrated Project 1 (IP1) weather radar network, the first distributed collaborative adaptive sensing test bed of the Engineering Research ... -
An Algorithm for Classification and Outlier Detection of Time-Series Data
(American Meteorological Society, 2010)An algorithm to perform outlier detection on time-series data is developed, the intelligent outlier detection algorithm (IODA). This algorithm treats a time series as an image and segments the image into clusters of interest, ... -
Retrieving Properties of Thin Clouds from Solar Aureole Measurements
(American Meteorological Society, 2009)This paper describes a newly designed Sun and Aureole Measurement (SAM) aureolegraph and the first results obtained with this instrument. SAM measurements of solar aureoles produced by cirrus and cumulus clouds were taken ... -
Correcting Calibrated Infrared Sky Imagery for the Effect of an Infrared Window
(American Meteorological Society, 2009)A method is demonstrated for deriving a correction for the effects of an infrared window when used to weatherproof a radiometrically calibrated thermal infrared imager. The technique relies on initial calibration of two ... -
Dual-Polarization Radar Characteristics of an Apartment Fire
(American Meteorological Society, 2009)Dual-polarimetric microwave wavelength radar observations of an apartment fire in Huntsville, Alabama, on 3 March 2008 are examined to determine the radar-observable properties of ash and fire debris lofted into the ... -
Methodology for Water Monitoring in the Upper Troposphere with Raman Lidar at the Haute-Provence Observatory
(American Meteorological Society, 2009)A Raman water vapor lidar has been developed at the Haute-Provence Observatory to study the distribution of water in the upper troposphere and its long-term evolution. Some investigations have been proposed and described ... -
Seasonal and Diurnal Variations of Ozone near the Mesopause from Observations of the 11.072-GHz Line
(American Meteorological Society, 2009)Ground-based observations of the 11.072-GHz line of ozone were made from January 2008 through January 2009. These observations provide an estimate of the diurnal and seasonal variations of ozone in the mesopause region. ... -
A New Compact Cryogenic Air Sampler and Its Application in Stratospheric Greenhouse Gas Observation at Syowa Station, Antarctica
(American Meteorological Society, 2009)To collect stratospheric air samples for greenhouse gas measurements, a compact cryogenic air sampler has been developed using a cooling device called the Joule?Thomson (J?T) minicooler. The J?T minicooler can produce ... -
A Total Lightning Trending Algorithm to Identify Severe Thunderstorms
(American Meteorological Society, 2010)An algorithm that provides an early indication of impending severe weather from observed trends in thunderstorm total lightning flash rates has been developed. The algorithm framework has been tested on 20 thunderstorms, ...