Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 541-560 of 5084
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On Producing Reliable and Affordable Numerical Weather Forecasts on Public Cloud-Computing Infrastructure
(American Meteorological Society, 2019)AbstractCloud-computing resources are increasingly used in atmospheric research and real-time weather forecasting. The aim of this study is to explore new ways to reduce cloud-computing costs for real-time numerical weather ... -
Gridded Monthly Rainfall Estimates Derived from Historical Atoll Observations
(American Meteorological Society, 2019)AbstractTo provide an analysis tool for areal rainfall estimates, 1° gridded monthly sea level rainfall estimates have been derived from historical atoll rainfall observations contained in the Pacific Rainfall (PACRAIN) ... -
A Vortex-Based Doppler Velocity Dealiasing Algorithm for Tropical Cyclones
(American Meteorological Society, 2019)AbstractIn this study, a vortex-based Doppler velocity dealiasing (VDVD) algorithm for tropical cyclones (TCs) is proposed. The algorithm uses a Rankine combined vortex model as a reference field for dealiasing based on ... -
An Optimal Estimation Retrieval Algorithm for Microwave Humidity Sounding Channels with Minimal Scan Position Bias
(American Meteorological Society, 2019)AbstractA flexible and physical optimal estimation-based inversion algorithm for retrieving atmospheric water vapor and cloud liquid water path from passive microwave radiometers over the global oceans is presented. The ... -
Comparison of Convective Boundary Layer Characteristics from Aircraft and Wind Lidar Observations
(American Meteorological Society, 2019)AbstractDuring the Convective Storm Initiation Project experiment, which was conducted in summer 2005 in southern England, vertical velocity in the convective boundary layer (CBL) was measured simultaneously with a research ... -
What Can We Expect from Data Assimilation for Air Quality Forecast? Part II: Analysis with a Semi-Real Case
(American Meteorological Society, 2019)AbstractAssimilation of observational data from ground stations and satellites has been identified as a technique to improve air quality model results. This study is an evaluation of the maximum benefit expected from data ... -
Validation of High Ocean Surface Winds from Satellites Using Oil Platform Anemometers
(American Meteorological Society, 2019)AbstractReliable sources for validating wind observations made by spaceborne microwave radiometer and scatterometer sensors above 15 m s?1 are scarce. Anemometers mounted on oil platforms provide usable wind speed measurements ... -
Application of Spectral Polarimetry to a Hailstorm at Low Elevation Angle
(American Meteorological Society, 2019)AbstractSpectral polarimetry has the potential to be used to study microphysical properties in relation to the dynamics within a radar resolution volume by combining Doppler and polarimetric measurements. The past studies ... -
Evaluation of Catch Efficiency Transfer Functions for Unshielded and Single-Alter-Shielded Solid Precipitation Measurements
(American Meteorological Society, 2019)AbstractSolid precipitation undercatch can reach 20%?70% depending on meteorological conditions, the precipitation gauge, and the wind shield used. Five catch efficiency transfer functions were selected from the literature ... -
Merged Cloud and Precipitation Dataset from the HIAPER GV for the Cloud System Evolution in the Trades (CSET) Campaign
(American Meteorological Society, 2019)AbstractThe Cloud System Evolution in the Trades (CSET) aircraft campaign was conducted in the summer of 2015 in the northeast Pacific to observe the transition from stratocumulus to cumulus cloud regime. Fourteen transects ... -
Quadratic Phase Coding for High Duty Cycle Radar Operation
(American Meteorological Society, 2019)AbstractQuadratically varying phase codes applied from pulse to pulse can be used to impart a range-dependent frequency shift in the decoded signal of a pulsed radar. Radars employing such codes can operate at extremely ... -
Uncertainty in Retrieving Raindrop Size Distribution from Polarimetric Radar Measurements
(American Meteorological Society, 2019)AbstractDrop size distribution (DSD) is a fundamental parameter in rain microphysics. Retrieving DSDs from polarimetric radar measurements extends the capabilities of rain microphysics research and quantitative precipitation ... -
Detection of Fronts as a Metric for Numerical Model Accuracy
(American Meteorological Society, 2019)AbstractAs numerical modeling advances, quantitative metrics are necessary to determine whether the model output accurately represents the observed ocean. Here, a metric is developed based on whether a model places oceanic ... -
Representation of Vertical Atmospheric Structures by Radio Occultation Observations in the Upper Troposphere and Lower Stratosphere: Comparison to High-Resolution Radiosonde Profiles
(American Meteorological Society, 2019)AbstractGlobal positioning system (GPS) radio occultation (RO) is capable of retrieving vertical profiles of atmospheric parameters with high resolution (<100 m), which can be achieved in spherically symmetric atmosphere. ... -
Alternating Decision Trees for Cloud Masking in MODIS and VIIRS NASA Sea Surface Temperature Products
(American Meteorological Society, 2019)AbstractIdentification and exclusion of clouds from satellite-based infrared fields is critical to achieve accurate retrievals of sea surface temperature (SST). Historically, identification of clouds has been driven primarily ... -
Ground Validation of Surface Snowfall Algorithm in GPM Dual-Frequency Precipitation Radar
(American Meteorological Society, 2019)AbstractExtensive evaluations have been performed on the dual-frequency classification module in the Global Precipitation Mission (GPM) Dual-Frequency Precipitation Radar (DPR) level-2 algorithm. Both rain type classification ... -
Assessment of the Water-Following Capabilities of CODE Drifters Based on Direct Relative Flow Measurements
(American Meteorological Society, 2019)AbstractDirect measurements of the relative water flow near the top and bottom of Coastal Ocean Dynamics Experiment (CODE) drifters were made in the northeast Pacific Ocean and the Mediterranean Sea in wind speeds as large ... -
A Methodology for Fitting the Time Series of Snow Depth on the Arctic Sea Ice
(American Meteorological Society, 2019)AbstractSnow depth is an important geophysical variable for investigating sea ice and climate change, which can be obtained from satellite data. However, there is a large number of missing data in satellite observations ... -
Comparison of Satellite, Model, and In Situ Values of Photosynthetically Available Radiation (PAR)
(American Meteorological Society, 2019)AbstractPhotosynthetically available radiation (PAR) incident at the sea surface penetrates into the water column and drives oceanic primary production. Ecosystem models to estimate phytoplankton biomass and primary ... -
On the Use of Geophysical Parameters for the Top-of-Atmosphere Shortwave Clear-Sky Radiance-to-Flux Conversion in EarthCARE
(American Meteorological Society, 2019)AbstractWe have investigated whether differences across Clouds and the Earth?s Radiant Energy System (CERES) top-of-atmosphere (TOA) clear-sky angular distribution models, estimated separately over regional (1° ? 1° ...