Oceanography and Atmospheric Sciences and Meteorology Commons^™

Regional Variation In Temperature Humidity Index For Poultry Housing, Richard S. Gates, Hanzhong Zhang, Donald G. Colliver, Douglas G. Overhults

Biosystems and Agricultural Engineering Faculty Publications

A building thermal model was used to compute hourly values of temperature humidity index (THI) for a broiler house with and without an evaporative misting system. Hourly summer time weather data for 238 U.S.A. locations covering 30 years were used to develop extreme occurrences of THI. Results were incorporated into a Geographical Information System (GIS) database to create isolines of THI and percentage of hours exceeding a heat stress threshold. Regional variations in misting as a suitable cooling technique are presented in terms of hours reduction in annual heat stress. The technique may be used for assisting in management decisions …

Simulations Of The Effects Of Water Vapor, Cloud Liquid Water, And Ice On Amsu Moisture Channel Brightness Temperatures, Bradley M. Muller, Henry E. Fuelberg, Xuwu Xiang

Publications

Radiative transfer simulations are performed to determine how water vapor and nonprecipitating cloud liquid water and ice particles within typical midlatitude atmospheres affect brightness temperatures T-B's of moisture sounding channels used in the Advanced Microwave Sounding Unit (AMSU) and AMSU-like instruments. The purpose is to promote a general understanding of passive top-of-atmosphere T-B's for window frequencies at 23.8, 89.0, and 157.0 GHz, and water vapor frequencies at 176.31, 180.31, and 182.31 GHz by documenting specific examples. This is accomplished through detailed analyses of T-B's for idealized atmospheres, mostly representing temperate conditions over land. Cloud effects are considered in terms of …

Ozone Heating And The Destabilization Of Traveling Waves During Summer, Terrence R. Nathan, Eugene Cordero, Long Li

Faculty Publications, Meteorology and Climate Science

The effects of ozone heating on the linear stability of lower stratospheric traveling waves of the summertime, extratropical circulation are examined. Based on coupled equations for the quasigeostrophic potential vorticity and ozone volume mixing ratio, it is shown that the diabatic heating arising from ozone advection can offset the damping due to Newtonian cooling, leading to wave amplification and significant changes in the structure and zonally rectified fluxes of the wave fields in both the lower stratosphere and troposphere. The vertical profile of the zonal mean wind plays a crucial role in determining whether the ozone heating destabilizes eastward and/or …

Continuous Assimilation Of Geosat Altimeter Data Into A Three-Dimensional Primitive Equation Gulf Stream Model, Tal Ezer, George L. Mellor

CCPO Publications

A three-dimensional data assimilation scheme is described and tested, using the Geosat altimeter data and a high-resolution, primitive equation, numerical ocean model of the Gulf Stream region. The assimilation scheme is based on an optimal interpolation approach in which data along satellite tracks are continuously interpolated horizontally and vertically into the model grid and assimilated with the model prognostic fields. Preprocessed correlations between surface elevation anomalies and subsurface temperature and salinity anomalies are used to project surface information into the deep ocean; model and data error estimates are used to optimize the assimilation. Analysis fields derived from the Navy's Optimum …

Developing Prediction Regions For A Time Series Model For Hurricane Forecasting, William Cheman

Theses and Dissertations

In this thesis, a class of time series models for forecasting a hurricanes future position based on its previous positions and a generalized model of hurricane motion are examined and extended. Results of a literature review suggest that meteorological models continue to increase in complexity while few statistical approaches, such as linear regression, have been successfully applied. An exception is provided by a certain class of time series models that appear to forecast storms almost as well as current meteorological models without their tremendous complexity. A suggestion for enhancing the performance of these time series models is pursued through an …

Precipitation Gauge Testing On The Wasatch Plateau, Utah, During Early 1993, United States Department Of The Interior, Bureau Of Reclamation

Meterology

The Bureau of Reclamation performed an independent evaluation of an ETI (Electronic Techniques, Inc.) precipitation gauge at the High Altitude Site on the western slope of the Wasatch Plateau in central Utah. The ETI gauge could provide a desirable alternative to conventional recording gauges in several applications, including evaluation of cloud seeding projects, if it performs as advertised. The testing program was intended to determine its performance in a winter mountain environment. The ETI precipitation gauge proved to be reliable from time of installation in late November 1992 until removal in late March 1993. The only problem found was an …

Ua66/8/2 Climatic Extremes In Kentucky, Wku Kentucky Climate Center

WKU Administration Documents

Kentucky Climate Center report number 28 Climatic Extremes in Kentucky.

An Alternative Representation Of The Ice Canopy For Calculating Microwave Brightness Temperatures Over A Thunderstorm, Bradley M. Muller, Henry E. Fuelberg, Eric A. Smith

Publications

Passive microwave brightness temperatures (T(B)'s) at 92 and 183 GHz from an aircraft thunderstorm overflight are compared with values calculated from radar-derived hydrometeor profiles and a modified proximity sounding. Two methods for modeling particles in the ice canopy are contrasted. The first is a ''traditional'' approach employing Marshall-Palmer ice spheres. The second, or ''alternative,'' method partitions 20% of the ice water content into a Marshall-Palmer component for graupel and hail, and 80% into a modified gamma spherical particle size distribution function representing ice crystals.

Results from the alternative approach are superior to those from the traditional method in the anvil …

Including Maximum Sustained Wind Speed In A Time Series Model To Forecast Hurricane Movement, Timothy B. Mott

Theses and Dissertations

Techniques for applying time series fundamentals to forecasting hurricane movement are thoroughly examined in this research. The objectives are: (1) to modify Dr. Thomas Curry's threshold autoregressive time series model to improve its ability to forecast hurricane movement, (2) to forecast the maximum sustained wind speed for a hurricane, and (3) to identify if wind speed should be included as an explanatory variable to aid in forecasting hurricane movement. Eleven different models to predict the latitude, longitude and maximum sustained wind speed are compared and contrasted with Curry's bivariate time series model. The results showed the modifications allow significant forecasting …

Global Snow Cover Monitoring: An Update, David A. Robinson, Kenneth F. Dewey, Richard R. Heim Jr.

United States Department of Commerce: Staff Publications

Accurate monitoring of the large-scale dimensions of global snow cover is essential for understanding details of climate dynamics and climate change. Presently, such information is gathered individually from ground station networks and satellite platforms. Efforts are in progress to consolidate and analyze long-term station records from a number of countries. To gain truly global coverage, however, satellite-based monitoring techniques must be employed. A 27-year record of Northern Hemisphere continental snow cover produced by the United States National Oceanic and Atmospheric Administration (NOAA) is the longest such environmental record available. Records of Southern Hemisphere continental cover and snow on top of …

A Methodology For Developing High Performance Computing Models: Storm-Scale Weather Prediction, Nikos Chrisochoides, Kelvin Droegemeier, Geoffrey C. Fox, Kim Mills, Ming Xue

Northeast Parallel Architecture Center

A methodology for developing future generations of a storm-scale weather prediction model for Massively Parallel Processing is described. The forecast model is the Advanced Regional Prediction System (ARPS), a three-dimensional, fully compressible, non-hydrostatic predictive model. In the short term, the computational goals include developing a portable, scalable model for distributed memory SIMD and MIMD architectures, while preserving a high degree of modularity to support rapid design and validation, maintainability, educational goals and operational testing. Longer term computational goals include a parallel adaptive mesh refinement scheme. A FortranD/High Performance Fortran version of the ARPS provides portability in the current version of …

Climatic Change Apocalypse And Law, Ray Jay Davis

Brigham Young University Journal of Public Law

No abstract provided.

A Climatology Of Transition Season Colorado Cyclones: 1961-1990, Gregory D. Bierly

All-Inclusive List of Electronic Theses and Dissertations

Colorado cyclones have been the subject of many meteorologic and climatologic investigations, but few studies have examined cyclone behavior with a specific focus on a comparison of the spring and fall transition seasons in the upper level westerlies. Periods of change in the number of planetary waves lead to a rearrangement of the longwave pattern in the westerlies and an increased frequency of troughs in the southwestern United States. Short wave disturbances andjor jet maximum moving through the long wave pattern create the potential for Colorado cyclogenetic events and also increasing the frequency of severe weather resultant from these events. …

What Brings The First Rains Of The Season?, Ian Foster

Journal of the Department of Agriculture, Western Australia, Series 4

There are two major sources of rainfall over south-western Australia.

A Numerical Study Of The Variability And The Separation Of The Gulf Stream, Induced By Surface Atmospheric Forcing And Lateral Boundary Flows, Tal Ezer, George L. Mellor

CCPO Publications

A primitive equation model is used to study the effects of surface and lateral forcing on the variability and the climatology of the Gulf Stream system. The model is an eddy-resolving, coastal ocean model that includes thermohaline dynamics and a second-order turbulence closure scheme to provide vertical mixing. The surface forcing consists of wind stress and heat fluxes obtained from the Comprehensive Ocean-Atmosphere Data Set (COADS). Sensitivity studies are performed by driving the model with different forcing (e.g., annual versus zero surface forcing or monthly versus annual forcing). The model climatology, obtained from a five-year simulation of each case, is …

Investigation Of Hydrometeorological Relationships, Pasu Glacier Basin, Northern Pakistan, Bob Boyce

Theses and Dissertations (Comprehensive)

Records of air temperature, global radiation and discharge from the Pasu Glacier basin in the Upper Indus River Basin have been examined with a view to developing a modest understanding of the simple physically based processes in action within this globally extreme mountainous region. Some glaciological data are also reported but in a preliminary manner. Relationships between air temperature characteristics, global radiation and discharge were investigated using correlation techniques. Daily average air temperatures recorded at the highest meteorological station, Parundas (4200m), provide the strongest degree of association with discharge. The data shows that this highly glacierised Karakoram basin exhibits similar …

Ua66/8/2 Climate Of Bowling Green, Kentucky, Wku Kentucky Climate Center, Glen Conner, John Ternent

WKU Administration Documents

Climatological summary of weather and temperatures for Bowling Green, Kentucky between 1961 and 1990.

A Simulation And Diagnostic Study Of Water Vapor Image Dry Bands, Bradley M. Muller, Henry E. Fuelberg

Publications

A Limited Area Mesoscale Prediction System (LAMPS) model simulation and special 3-hour radiosonde dataset are used to investigate warm (dry) bands in 6,7 μm water vapor satellite imagery on 6–7 March 1982. The purpose is to reveal processes resulting in the formation and evolution of the dry features that appear as curving dark streaks in the imagery. Model soundings are input to a radiative transfer algorithm to generate synthetic 6.7 μm equivalent blackbody temperatures (TB) which are compared with those from the Visible infrared Spin Scan Radiometer Atmospheric Sounder aboard the Geostationary Operational Environmental Satellite. Simulated and radiosonde-derived vertical velocity …

An Economic Model For Evaluating Strategies On The South Coast Of W.A. Which Reduce Wind Erosion : Documentation, A D. Bathgate

Resource management technical reports

The sandplain region on the south coast has predominately sandy soils which are subject to erosive winds when ground cover is likely to be scarce. This can often result in production losses of crop and pasture. There is concern that wind erosion will lead to the depletion of the soil resource in the long term. The model is multi-period linear programming with a planning horizon of 10 years. Effects of wind erosion on production can be imposed on the model for the first five years after the erosion event.

Summer Stormflow Generation In A Small Precambrian Shield Basin, Larry C. Pezzutto

Theses and Dissertations (Comprehensive)

The environmental isotope oxygen-18 and natural water chemistry were used to identify both the percent individual source component and mechanisms responsible for generating summer surface storm runoff in a small Precambrian Shield catchment. In addition, variations in radon gas (Rn-222) concentration in both surface and groundwaters were monitored in order to gain additional information not obtainable through use of the above stated tracers. Results indicate that the percent component contribution and the mechanism(s) responsible for stormflow generation within the study basin are largely dependent upon antecedent basin conditions and physical storm characteristics. Generally speaking, shortly after initiation of precipitation under …

Ua66/8/2 The Climate Of Bowling Green & Warren County, Wku Center For Local Government, Glen Conner, Mike Nichols, John Ternent, Grant Whittle, Amy Huot

WKU Administration Documents

Climate analysis of Bowling Green and Warren County, Kentucky from 1958 to 1987.

The Effect On Earth's Surface-Temperature From Variations In Rotations Rate, Continent Formation, Solar Luminosity, And Carbon Dioxide, William R. Kuhn, J. C.G. Walker, Harold G. Marshall

Biological Sciences Faculty Publications

Proposed evolutionary histories of solar luminosity, atmospheric carbon dioxide amounts, Earth rotation rate, and continent formation have been used to generate a time evolution of Earth's surface temperature. While speculative because of uncertainties in the input parameters, such a study does help to prioritize the areas of most concern to paleoclimatic research while illustrating the relationships and mutual dependencies. The mean temperature averages about 5 K higher than today over most of geologic time; the overall variation is less than 15 K. The evolution of Earth's rotation rate makes a significant contribution to the surface temperature distribution as late as …

Ua35/11 Student Honors Research Bulletin, Wku Honors Program

WKU Administration Documents

The WKU Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers are representative of work done by students from throughout the university.

• Bachert, Sara. Rational Portrayal of the Irrationational in The Pit and the Pendulum
• Bell, Suzanne. Early Secret Involvement of the United States Military in Cambodia
• Brock, Beth. The Informal Caregiving System: The Frail Elderlys' Avenue of Choice
• Daniel, Janice. Child Sexual Abuse
• Johnson, Linda. International Telecommunications Trade with Japan
• Jones, LaMont. Ernie Pyle: Journalist Without Peer
• Kesserling, Marcia. Attitudes Toward the Need for Computer Literacy
• Lewis, Gloria. John Donne's Attitude Toward Love
• Majdi, …

Soil Factors Affecting Flood Runoff On Agricultural Catchments In Western Australia, D J. Mcfarlane, J R. Davies

Resource management technical reports

Reviews methods of including soil properties in flood runoff-predicting equations. Concentrates on practical methods that can be routinely used by soil conservation technicians for flood prediction rather than complex research models. A case is made for collecting soil data from the gauged catchments which are relevant to a perceived runoff mechanism and are capable of being routinely applied in simple flood prediction methodologies.

Ua35/11 Wku Student Honors Research Bulletin, Wku University Honors Program

WKU Administration Documents

The Western Kentucky University Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers represent work done by students from throughout the university.

• Kesselring, Marcia. Attitudes Toward the Need for Computer Literacy
• Tuck, Janna & Karen Wiggins. Methylation and Confirmation of PGE
• Lewis, Gloria. John Donne's Attitude Toward Love
• Johnson, Linda. International Telecommunications Trade with Japan
• Sharpe, Greg. Precipitation Patterns in Bowling Green, Kentucky, 1980-1985
• Smith, Sandy. Religion and the Media: Alliance or War?
• Bell, Suzanne. Early Secret Involvement of the United States Military in Cambodia
• Scariot, Linda. Parental Divorce and Childhood Emotional Disturbances
• Daniel, Janice. …

Calculated Current Velocity Data, U.S. Bureau Of Reclamation

Publications (WR)

Data collected at various stations around the Lake Mead vicinity. Air temperature, lake elevation, weather, and wind velocity is recorded, as well as the depth, magnitude, resolved angle, and bearing of the water currents.

Spatial And Temporal Variation Of Snow Accumulation In The Central Karakoram, Northern Pakistan, Cameron Parker Wake

Theses and Dissertations (Comprehensive)

Runoff from the Upper Indus Basin depends upon snowfall at high elevations in the northern mountains of Pakistan. However, very little is known concerning the amount of snowfall in the major source area, the high Karakoram, or its spatial and temporal distribution. Glaciers contain well preserved records of snow accumulation and provide a unique tool for retrieving data. A number of studies on temperate and tropical glaciers indicate that variations in chemical content and microparticle concentrations delineates seasonal stratigraphy. In addition, the chemical record of the snowpack can usually be used to determine the source of precipitation. Field work in …

Slack-Water Deposits And The Magnitude And Frequency Of Flash Floods, Eastern Kentucky, Russell G. Shepherd, Lisa K. Bienkowski

KWRRI Research Reports

The potential for predicting flood magnitude and frequency using sediments deposited in backwater areas during flash floods was investigated on the Cumberland Plateau of eastern Kentucky, a region n9torious for flash flooding. Slack-water deposits are abundant in the area at tributary mouths and bedrock channel expansions. They are identifiable on geologic quandrangle maps, and are locally good potential indicators of maximum flood-crest elevations. However, in this humid region, flash floods could not be distinguished from non-flash floods using slack-water sedimentology.

The results from the slack-water deposits studied indicate that they offer limited potential for predicting flash floods because 1) intense …

Storm Surge Predictions At Sewell's Point With Local Wind, Pressure, And Previous Surge As Surge Predictors In Chesapeake Bay, Joy Elaine Moses

OES Theses and Dissertations

The statistical model used to predict storm surge. which is defined as the difference between observed water level and predicted astronomical tide. at Sewell's Point. Virginia. for the last ten years relies on forecast surface air pressures interpolated over a large portion of the Atlantic Ocean. A variation on this method is developed which adds previous station surge and local wind and pressure terms with time leads up to 18 hours to the Pore prediction for surge. and develops surge prediction equations for three substations eight to 65 miles (13 to 105 km) from Sewell's Point. The Sewell's Point surge …

Ua66/8/2 Climate Of Paducah, Kentucky, Wku Kentucky Climate Center, Glen Conner, Tom Feeney, Vernon Pyse

WKU Administration Documents

Climatological summary of weather and temperatures for Paducah, Kentucky between 1956 and 1985