Journal of Atmospheric and Oceanic Technology: Recent submissions
Now showing items 3361-3380 of 5084
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Wind Effect on Measured Atmospheric Pressure
(American Meteorological Society, 1989)Wind generated Pressure inside buildings, normally referred to as ?internal pressure? in engineering literature, has a profound effect on the atmospheric pressure measured with indoor barometers during severe storms. The ... -
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Wind-Stress Coefficients at Light Winds
(American Meteorological Society, 1988)The increase of the wind-stress coefficient with wind velocity was found to start with winds as light as 3 m s?1, below which, following the formula for aerodynamically smooth flows, the wind-stress coefficient decreases ... -
Comparison of Quality and Completeness of National Climatic Data Center and Illinois Climate Assistance Service (CLASS) Data
(American Meteorological Society, 1988)We compare the Completeness and quality of one year's daily temperature and precipitation observations from the National Climatic Data Center (NCDC) database with those received by the Illinois State Water Survey's (ISWS) ... -
Group Calibration of Silicon Cell Pyranometers for Use in an Automated Network
(American Meteorological Society, 1988)Techniques for simultaneously calibrating a number of pyranometers for use with automated weather stations are examined. The pressure involves taking data from an Eppley precision spectral pyranometer and from up to 11 ... -
An Inexpensive Thermocouple Probe-Amplifier and its Response to Rapid Temperature Fluctuations in a Mountain Forest
(American Meteorological Society, 1988)A sensitive, fast-response temperature probe is important for studying heat flux in the surface layer. This paper describes the construction of an amplifier for use with a fast-response thermocouple probe and presents field ... -
Rapid Method for Correcting the Non-Cosine Response Errors of the Gill Propeller Anemometer
(American Meteorological Society, 1988)A fast algorithm to correct for the non-cosine response of the three-component Gill Propeller Anemometer is presented. Its intended use is for real time in-situ correction of the horizontal and vertical components of the ... -
On an Adaptive Mean Frequency Estimator for Doppler Weather Radar Signals
(American Meteorological Society, 1988)An adaptive mean frequency estimator is compared to the pulse pair (autocovariance) mean estimator using simulated Doppler weather spectra. Results show that the pulse pair method has superior performance, on the basis of ... -
A Theoretical Study of the Accuracy of Tomographic Retrieval of Cloud Liquid with an Airborne Radiometer
(American Meteorological Society, 1988)Prior studies of the technique of inferring the Liquid water distribution in a cloud with microwave cloud tomography have concentrated on the use of ground-based instruments. An extension of the technique to the analysis ... -
Field Tests of an Airborne Remote Sensing Technique for Measuring the Distribution of Liquid Water in Convective Cloud
(American Meteorological Society, 1988)A comparison has been made between the distribution of liquid water in maritime cumulus clouds deduced from radiometric measurements below cloud base and that measured directly by penetrating the clouds at various altitudes. ... -
Effects of Coincidence on Measurements with a Forward Scattering Spectrometer Probe
(American Meteorological Society, 1988)A PMS Forward Scattering Spectrometer Probe (FSSP) may fail to detect a droplet that enters the illuminated volume in coincidence with another droplet, or such a coincident pair may be assigned an erroneous size. This ... -
A C-Band Coherent Polarimetric Radar for Propagation and Cloud Physics Research
(American Meteorological Society, 1988)At DFVLR in Oberpfaffenhofen, West Germany, a recently developed coherent polarimetric C-band radar is now in operation for research in atmospheric physics and radio wave propagation physics. Its capabilities provide ... -
Error Structure of Multiparameter Radar and Surface Measurements of Rainfall Part II: X-Band Attenuation
(American Meteorological Society, 1988)In Part II of this study, simulations of multiparameter radar observables to include X-band specific attenuation (A) are performed in order to study the relationship between A, Z, and ZDR. We also compute the triplet (A, ... -
Error Structure of Multiparameter Radar and Surface Measurements of Rainfall Part I: Differential Reflectivity
(American Meteorological Society, 1988)Fluctuations in the radar measurements of ZDR are due to both signal power fluctuations and the cross-correlation between the horizontal and vertical polarized signals. In Part I of this study, these signals are simulated ... -
Inertial Drift Correction for Aircraft-Derived Wind Fields
(American Meteorological Society, 1988)During the last three decades, aircraft have assumed an increasingly important role as platforms for atmospheric measurement. Because of the nature of the wind measurement process, however, low-frequency winds remain ... -
The Relative Merits of Narrowband Channels for Estimating Broadband Albedos
(American Meteorological Society, 1988)Observations made with the current and proposed narrowband shortwave channels aboard the NOAA series of satellites were simulated for a number of different surfaces (ocean, vegetative land, desert, cloud and snow) using ... -
Three-Dimensional Trajectory Analysis of Two Drop Sizing instruments: PMS* OAP and PMS* FSSP
(American Meteorological Society, 1988)Flow-induced distortions of water drop flux and speed are predicted by three-dimensional calculations. The instruments are studied in isolation and mounted under the wing of a DeHavilland Twin Otter airplane. Several free ... -
Estimating the Time Dependence of Air Temperature Using Daily Maxima and Minima: A Comparison of Three Methods
(American Meteorological Society, 1988)Many models in a variety of disciplines require air temperature throughout the day as an input, yet often the only data available are daily extrema. Several methods for estimating the diurnal change in temperature from ... -
The Influence of Vertical Air Velocity on the Remote Microwave Measurement of Rain
(American Meteorological Society, 1988)Atlas and Ulbrich showed a close theoretical relation between gage-measured rain rate and 1 cm microwave absorption; and other remote techniques for potentially accurate rain estimation have been developed. More recently, ... -
Applications of Dual Aircraft Formation Flights
(American Meteorological Society, 1988)We discuss procedures for analyzing dual aircraft formation flights using time-lapse photographs of one aircraft from the other, combined with inertial navigation system position measurements, to estimate the displacement ...