Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 481-500 of 5084
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An Algorithm to Derive Temperature and Humidity Profile Changes Using Spatially and Temporally Averaged Spectral Radiance Differences
(American Meteorological Society, 2020)A linear inversion algorithm to derive changes of surface skin temperature and atmospheric temperature and specific humidity vertical profiles using spatially and temporally averaged spectral radiance differences is ... -
A Compact, Flexible, and Robust Micropulsed Doppler Lidar
(American Meteorological Society, 2020)This work details a master oscillator power amplifier (MOPA) microjoule-class pulsed coherent Doppler lidar system configuration designed to measure line-of-sight wind velocities and backscatter intensity of atmospheric ... -
Automated Activity Estimation of the Cold-Water Coral Lophelia pertusa by Multispectral Imaging and Computational Pixel Classification
(American Meteorological Society, 2020)The cold-water coral Lophelia pertusa builds up bioherms that sustain high biodiversity in the deep ocean worldwide. Photographic monitoring of the polyp activity represents a helpful tool to characterize the health status ... -
Temporal Variations of a Natural Hydrocarbon Seep Using a Deep-Sea Camera System
(American Meteorological Society, 2020)Two video time-lapse cameras (VTLCs) were deployed by a remotely operated underwater vehicle (ROV) to observe the temporal and spatial variability of a natural hydrocarbon seep at 1180 m depth in the Green Canyon 600 lease ... -
Assessment of HF Radar in Mapping Surface Currents under Different Sea States
(American Meteorological Society, 2020)Two Ocean State Monitoring and Analyzing Radar (OSMAR071) (7.8 MHz) high-frequency (HF) radars and four moored ADCPs were operated concurrently in the southwestern Taiwan Strait during January–March 2013. Qualitative and ... -
Wave-by-Wave Forecasting via Assimilation of Marine Radar Data
(American Meteorological Society, 2020)This work describes a phase-resolving wave-forecasting algorithm that is based on the assimilation of marine radar image time series. The algorithm is tested against synthetic data and field observations. The algorithm ... -
Doppler Circulation as a Fairly Range-Insensitive Far-Field Tornado Detection and Precursor Parameter
(American Meteorological Society, 2020)Formulas are obtained for observed circulation around and contraction rate of a Doppler radar grid cell within a surface of constant launch angle. The cell values near unresolved axisymmetric vortices vary greatly with ... -
Potential of Dual-Frequency Radar and Microwave Radiometer Synergy for Water Vapor Profiling in the Cloudy Trade-Wind Environment
(American Meteorological Society, 2020)High-resolution boundary-layer water vapor profile observations are essential for understanding the interplay between shallow convection, cloudiness and climate in the trade wind atmosphere. As current observation techniques ... -
The Giant Nucleus Impactor (GNI)—A System for the Impaction and Automated Optical Sizing of Giant Aerosol Particles with Emphasis on Sea Salt. Part I: Basic Instrument and Algorithms
(American Meteorological Society, 2020)Size distributions of giant aerosol particles (dry radius larger than 0.5 μm, sometimes referred to as coarse-mode aerosol particles) are not well characterized in the atmosphere. Measurements are problematic for these ... -
A Critical Evaluation of the Adequacy of the Gamma Model for Representing Raindrop Size Distributions
(American Meteorological Society, 2020)The adequacy of the gamma model to describe the variability of raindrop size distributions (DSD) is studied using observations from an optical disdrometer. Model adequacy is checked using a combination of Kolmogorov–Smirnov ... -
Multi-Instrument Rainfall-Rate Estimation in the Peruvian Central Andes
(American Meteorological Society, 2020)Agriculture is one of the main economic activities in the Peruvian Andes; rainwater alone irrigates more than 80% of the fields used for agriculture purposes. However, the cloud and rain generation mechanisms in the Andes ... -
Correcting Biases in Historical Bathythermograph Data Using Artificial Neural Networks
(American Meteorological Society, 2020)Historical estimates of ocean heat content (OHC) are important for understanding the climate sensitivity of the Earth system and for tracking changes in Earth’s energy balance over time. Prior to 2004, these estimates rely ... -
Mitigation of Geostationary Lightning Mapper Geolocation Errors
(American Meteorological Society, 2020)The geolocation of lightning flashes observed by spaceborne optical sensors depends upon a priori assumptions of the cloud-top height (or, more generally, the height of the radiant emitter) as observed by the satellite. ... -
Implementing a Parallel Version of a Variational Scheme in a Global Assimilation System at Eddy-Resolving Resolution
(American Meteorological Society, 2020)Recent advances in global ocean prediction systems are fostered by the needs of accurate representation of mesoscale processes. The day-by-day realistic representation of its variability is hampered by the scarcity of ... -
A Technique for Estimating Liquid Droplet Diameter and Liquid Water Content in Stratocumulus Clouds Using Radar and Lidar Measurements
(American Meteorological Society, 2020)This paper describes a technique for estimating the liquid water content (LWC) and a characteristic particle diameter in stratocumulus clouds using radar and lidar observations. The uncertainty in LWC estimate from radar ... -
Evaluation on the Capability of Revealing Ocean Swells from Sentinel-1A Wave Spectra Measurements
(American Meteorological Society, 2020)Wave measurements retrieved by Sentinel-1A level-2 ocean (OCN) products are sensitive to swells other than wind seas, and are considered to provide a finer resolution of ocean swells. To assess the capability of swell ... -
Preliminary Study of Land–Sea Microphysics Associated with the East Asian Summer Monsoon Rainband and Its Application to GPM DPR
(American Meteorological Society, 2020)Raindrop size distribution (DSD) characteristics during the East Asian summer monsoon (EASM) were studied, using measurements from three OTT Particle Size Velocity (Parsivel) disdrometers in Nanjing, Chuzhou, and the ... -
Exploring Wind-Driven Subsurface Water Flow with an Acoustic Doppler Velocity Profiler
(American Meteorological Society, 2020)In this study, we report on experiments carried out in a large wind-wave tank to investigate the potential of the acoustic Doppler velocity profiler for determining the structure of the subsurface water boundary layer. ... -
Estimation of Wind Speed and Roughness Length Using Smartphones: Method and Quality Assessment
(American Meteorological Society, 2020)Crowdsourced data are now seen as a potential source of high-resolution observations in the atmospheric sciences. In this paper we investigate a potential data source, wind observations obtained using anemometers connected ... -
Observing Polar Regions from Space: Comparison between Highly Elliptical Orbit and Medium Earth Orbit Constellations
(American Meteorological Society, 2019)AbstractContinuous observation of polar regions from space remains an important unsolved technical challenge of great interest for the international meteorological community. This capacity would allow achieving global ...