Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 2781-2800 of 5084
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CALIPSO Lidar Description and Performance Assessment
(American Meteorological Society, 2009)This paper provides background material for a collection of Cloud?Aerosol Lidar with Orthogonal Polarization (CALIOP) algorithm papers that are to be published in the Journal of Atmospheric and Oceanic Technology. It ... -
A Quantum Cascade Laser–Based Reflectometer for On-Orbit Blackbody Cavity Monitoring
(American Meteorological Society, 2009)Satellite measurements pinned to international standards are needed to monitor the earth?s climate, quantify human influence thereon, and test forecasts of future climate change. Credible observations require that measurement ... -
Semiautonomous FTS Observation System for Remote Sensing of Stratospheric and Tropospheric Gases
(American Meteorological Society, 2009)A solar-viewing Fourier transform spectrometer (FTS) at Thule, Greenland (76.5°N, 68.8°W, 225 m MSL), has been in operation as part of the Network for the Detection of Atmospheric Composition Change [NDACC; formerly the ... -
Fully Automated Detection of Cloud and Aerosol Layers in the CALIPSO Lidar Measurements
(American Meteorological Society, 2009)Accurate knowledge of the vertical and horizontal extent of clouds and aerosols in the earth?s atmosphere is critical in assessing the planet?s radiation budget and for advancing human understanding of climate change issues. ... -
The CALIPSO Lidar Cloud and Aerosol Discrimination: Version 2 Algorithm and Initial Assessment of Performance
(American Meteorological Society, 2009)The Cloud?Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite was launched in April 2006 to provide global vertically resolved measurements of clouds and aerosols. Correct discrimination between ... -
Using Fractal Downscaling of Satellite Precipitation Products for Hydrometeorological Applications
(American Meteorological Society, 2010)The objective of spatial downscaling strategies is to increase the information content of coarse datasets at smaller scales. In the case of quantitative precipitation estimation (QPE) for hydrological applications, the ... -
Correction of Humidity Biases in Vaisala RS80-H Sondes during NAME
(American Meteorological Society, 2009)Examination of the upper-air sonde data taken in conjunction with the North American Monsoon Experiment (NAME) revealed that data at several sites in the core monsoon region exhibited a significant dry bias. In this study, ... -
A Comparison of Meteorological Observations from South Pole Station before and after Installation of a New Instrument Suite
(American Meteorological Society, 2009)The Amundsen?Scott South Pole surface meteorological instrument suite was upgraded in 2004. To ensure that the new and old instruments were recording similar information, the two suites of instruments ran simultaneously ... -
The Retrieval of Land Surface Pressure from MERIS Measurements in the Oxygen A Band
(American Meteorological Society, 2009)Measurements of the Medium-Resolution Imaging Spectrometer (MERIS) on the Environmental Satellite (Envisat) are used for the retrieval of surface pressure above land and ice surfaces. The algorithm is based on the exploitation ... -
A New Bruker IFS 125HR FTIR Spectrometer for the Polar Environment Atmospheric Research Laboratory at Eureka, Nunavut, Canada: Measurements and Comparison with the Existing Bomem DA8 Spectrometer
(American Meteorological Society, 2009)A new Bruker IFS 125HR Fourier transform spectrometer has been installed at the Polar Environment Atmospheric Research Laboratory at Eureka, Nunavut, Canada (80.05°N, 86.42°W). This instrument will become the Network for ... -
Inferring Convective Weather Characteristics with Geostationary High Spectral Resolution IR Window Measurements: A Look into the Future
(American Meteorological Society, 2009)A high spectral resolution geostationary sounder can make spectrally detailed measurements of the infrared spectrum at high temporal resolution, which provides unique information about the lower-tropospheric temperature ... -
Operational Monitoring of Weather Radar Receiving Chain Using the Sun
(American Meteorological Society, 2010)A method for operational monitoring of a weather radar receiving chain, including the antenna gain and the receiver, is presented. The ?online? method is entirely based on the analysis of sun signals in the polar volume ... -
Detailed Aerosol Optical Depth Intercomparison between Brewer and Li-Cor 1800 Spectroradiometers and a Cimel Sun Photometer
(American Meteorological Society, 2009)Aerosol optical depth (AOD) using different instruments during three short and intensive campaigns carried out from 1999 to 2001 at El Arenosillo in Huelva, Spain, are presented and compared. The specific aim of this study ... -
CO2 Retrieval over Clouds from the OCO Mission: Model Simulations and Error Analysis
(American Meteorological Society, 2009)Spectral characteristics of the future Orbiting Carbon Observatory (OCO) sensor, which will be launched in January 2009, were used to infer the carbon dioxide column-averaged mixing ratio over liquid water clouds over ocean ... -
Toward the Use of Integral Radar Volume Descriptors for Quantitative Areal Precipitation Estimation: Results from Pseudoradar Observations
(American Meteorological Society, 2009)The central objective of this analysis is to significantly enhance the quality of radar-derived precipitation estimates by as fully as possible exploiting the information contained in the spatial and temporal variability ... -
Estimation of Gamma Raindrop Size Distribution Parameters: Statistical Fluctuations and Estimation Errors
(American Meteorological Society, 2009)The gamma distribution is often used to characterize raindrop size distributions (DSDs). However, the estimation of measured raindrop distributions suffers from the shortcomings of statistical sampling errors, which become ... -
Validation of Geolocation of Measurements of the Clouds and the Earth’s Radiant Energy System (CERES) Scanning Radiometers aboard Three Spacecraft
(American Meteorological Society, 2009)The Clouds and the Earth?s Radiant Energy System (CERES) instrument is a scanning radiometer for measuring Earth-emitted and -reflected solar radiation to understand Earth?s energy balance. One CERES instrument was placed ... -
A Theory-Based Hydrometeor Identification Algorithm for X-Band Polarimetric Radars
(American Meteorological Society, 2009)Although much work has been done at S band to automatically identify hydrometeors by using polarimetric radar, several challenges are presented when adapting such algorithms to X band. At X band, attenuation and non-Rayleigh ... -
Processing of Oversampled Signals in Range on Polarimetric Weather Radars with Mismatched Channels
(American Meteorological Society, 2009)Processing oversampled signals in range with a whitening transformation has been proposed as a means to reduce the variance of meteorological variable estimates on polarimetric Doppler weather radars. However, the original ... -
Relative Humidity Effect on the High-Frequency Attenuation of Water Vapor Flux Measured by a Closed-Path Eddy Covariance System
(American Meteorological Society, 2009)In this study the high-frequency loss of carbon dioxide (CO2) and water vapor (H2O) fluxes, measured by a closed-path eddy covariance system, were studied, and the related correction factors through the cospectral transfer ...