Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 3021-3040 of 5084
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Extracting Reynolds Stresses from Acoustic Doppler Current Profiler Measurements in Wave-Dominated Environments
(American Meteorological Society, 2008)Surface waves introduce velocity correlations that bias and often dominate Reynolds stress estimates made using the traditional variance method for acoustic Doppler current profilers (ADCPs). This analysis shows that the ... -
On the Aliasing and Resolving Power of Sea Level Low-Pass Filtered onto a Regular Grid from Along-Track Altimeter Data of Uncoordinated Satellites: The Smoothing Strategy
(American Meteorological Society, 2008)It is shown that smoothing (low-pass filtering) along-track altimeter data of uncoordinated satellites onto a regular space?time grid helps reduce the overall energy level of the aliasing from the aliasing levels of the ... -
Hurricane Katrina Winds Measured by a Buoy-Mounted Sonic Anemometer
(American Meteorological Society, 2008)The eye of Hurricane Katrina passed within 49 n mi of an oceanographic observing system buoy in the Mississippi Bight that is part of the Central Gulf of Mexico Ocean Observing System. Although a mechanical anemometer ... -
Impact of Resolution and Optimized ECCO Forcing on Simulations of the Tropical Pacific
(American Meteorological Society, 2008)The sensitivity of the dynamics of a tropical Pacific Massachusetts Institute of Technology (MIT) general circulation model (MITgcm) to the surface forcing fields and to the horizontal resolution is analyzed. During runs ... -
Infrared Techniques for Measuring Ocean Surface Processes
(American Meteorological Society, 2008)Ocean surface processes, and air?sea interaction in general, have recently received increased attention because it is now accepted that small-scale surface phenomena can play a crucial role in the air?sea fluxes of heat, ... -
Estimation of Surface Currents in the Adriatic Sea from Sequential Infrared Satellite Images
(American Meteorological Society, 2008)The maximum cross-correlation (MCC) technique is utilized to estimate the Adriatic Sea surface currents in regions characterized by strong horizontal temperature gradients using sequential pairs of sea surface temperature ... -
Improved Turbulence Profiling with Field-Adapted Acoustic Doppler Velocimeters Using a Bifrequency Doppler Noise Suppression Method
(American Meteorological Society, 2008)A novel noise reduction method and corresponding technique are presented for improving turbulence measurements with acoustic Doppler velocimeters (ADVs) commonly used in field studies of coastal and nearshore regions, ... -
Optimizing Performance of a Microwave Salinity Mapper: STARRS L-Band Radiometer Enhancements
(American Meteorological Society, 2008)Airborne microwave radiometers for salinity remote sensing have advanced to a point where operational surveys can be conducted over the inner continental shelf to observe the evolution of freshwater plumes emanating from ... -
Integrated Ocean Skin and Bulk Temperature Measurements Using the Calibrated Infrared In Situ Measurement System (CIRIMS) and Through-Hull Ports
(American Meteorological Society, 2008)The design and performance of a shipboard-integrated system for underway skin and bulk temperature is presented. The system consists of the Calibrated Infrared In situ Measurement System (CIRIMS) and through-hull temperature ... -
Comparisons of Shipboard Infrared Sea Surface Skin Temperature Measurements from the CIRIMS and the M-AERI
(American Meteorological Society, 2008)Extensive comparisons are made of the infrared sea surface skin temperature Tskin measured by the Calibrated Infrared In situ Measurement System (CIRIMS) and the Marine-Atmospheric Emitted Radiance Interferometer (M-AERI). ... -
An Infrared Sea Surface Temperature Autonomous Radiometer (ISAR) for Deployment aboard Volunteer Observing Ships (VOS)
(American Meteorological Society, 2008)The infrared SST autonomous radiometer (ISAR) is a self-calibrating instrument capable of measuring in situ sea surface skin temperature (SSTskin) to an accuracy of 0.1 K. Extensive field deployments alongside two independent ... -
Wavelet Filtering to Extract Coherent Vortices from Altimetric Data
(American Meteorological Society, 2007)Because of the optimal features of wavelet processing, the use of wavelets for describing and analyzing signals in 2D turbulence has been generalized since a decade ago. In spite of the close analogy between 2D turbulence ... -
Rectification of the Bias in the Wavelet Power Spectrum
(American Meteorological Society, 2007)This paper addresses a bias problem in the estimate of wavelet power spectra for atmospheric and oceanic datasets. For a time series comprised of sine waves with the same amplitude at different frequencies the conventionally ... -
Satellite Estimates and Shipboard Observations of Downward Radiative Fluxes at the Ocean Surface
(American Meteorological Society, 2008)Clouds and the Earth?s Radiant Energy System (CERES) uses a suite of instruments on the Terra and Aqua satellites combined with analyzed weather data and information on surface conditions to estimate surface radiative ... -
On Turbulence and Mixing in the Free Atmosphere Inferred from High-Resolution Soundings
(American Meteorological Society, 2008)Mixing in the free atmosphere above the planetary boundary layer is of great importance to the fate of trace gases and pollutants. However, direct measurements of the turbulent dissipation rate by in situ probes are very ... -
Pressure and Temperature Differences between Vaisala RS80 and RS92 Radiosonde Systems
(American Meteorological Society, 2008)In several twin flight campaigns, Vaisala RS80 radiosonde systems report lower temperatures than Vaisala RS92 systems in the daytime. Simultaneous differences increase from less than 0.1 K at pressure altitudes below 100 ... -
Mesoscale Monitoring of Soil Moisture across a Statewide Network
(American Meteorological Society, 2008)Soil moisture is an important component in many hydrologic and land?atmosphere interactions. Understanding the spatial and temporal nature of soil moisture on the mesoscale is vital to determine the influence that land ... -
First Passage Time Analysis on Climate Indices
(American Meteorological Society, 2008)Climate variability is simply represented by teleconnection patterns such as the Arctic Oscillation (AO), Antarctic Oscillation (AAO), North Atlantic Oscillation (NAO), Pacific?North American pattern (PNA), and Southern ... -
Mobile Lidar Profiling of Tropical Aerosols and Clouds
(American Meteorological Society, 2008)Lidar profiling of atmospheric aerosols and clouds in the lower atmosphere has been in progress at the Indian Institute of Tropical Meteorology (IITM), Pune (18°32?N, 73°52?E, 559 m MSL), India, for more than two decades. ... -
A Collector for Fog Water and Interstitial Aerosol
(American Meteorological Society, 2008)An active heatable cloud water collector for ground sampling is presented. The collector can be operated unattended for approximately one week, even in harsh winter conditions. The collection strands are Teflon tubes. A ...