Open Access. Powered by Scholars. Published by Universities.®

Meteorology Commons

Open Access. Powered by Scholars. Published by Universities.®

935 Full-Text Articles 1267 Authors 43164 Downloads 49 Institutions

All Articles in Meteorology

Faceted Search

935 full-text articles. Page 1 of 26.

Drought Impacts On Soil Fertility Management, John E. Sawyer 2016 Iowa State University

Drought Impacts On Soil Fertility Management, John E. Sawyer

John E. Sawyer

If crop production was severely reduced because of dry conditions this year, there are a few items you can consider when planning for next year's crop. One, with severely damaged crops and low yields you might credit some of the phosphorus (P) and potassium (K) applied for this year's crop to next year, as much less removal will occur in grain harvest of the lower than expected yield.


Quantifying The Effects Of Humidity On Density Altitude Calculations For Professional Aviation Education, Thomas A. Guinn, Randell J. Barry 2016 Embry-Riddle Aeronautical University - Daytona Beach

Quantifying The Effects Of Humidity On Density Altitude Calculations For Professional Aviation Education, Thomas A. Guinn, Randell J. Barry

International Journal of Aviation, Aeronautics, and Aerospace

The effects of humidity on density altitude are quantified in detail and graphically represented as a function of temperature and dew-point temperature for ease of use in professional aviation education. A ten-year climatology of dew-point temperatures for various representative locations throughout the United States is created to provide a basis for comparison and use with the graphical displays. Density altitude is demonstrated to be a function only of dew-point temperature for a given pressure altitude. The absolute errors between density altitude calculations that incorporate humidity to those that do not are combined with linear regression techniques to create a simple ...


Modeling And Satellite Remote Sensing Of The Meteorological Impacts Of Irrigation During The 2012 Central Plains Drought, Clint Aegerter 2016 University of Nebraska-Lincoln

Modeling And Satellite Remote Sensing Of The Meteorological Impacts Of Irrigation During The 2012 Central Plains Drought, Clint Aegerter

Dissertations & Theses in Earth and Atmospheric Sciences

As irrigation is increasingly needed for agricultural production, it is becoming progressively more important to understand not only how irrigation impacts water availability, but how the introduction of this water into the soil impacts weather and climate through land-atmosphere interactions. In the summer of 2012, the Central Plains of the United States experienced one of its most severe droughts on record. This study examines the meteorological impacts of irrigation during this drought through observations and model simulations using the Community Land Model (CLM) coupled to the Weather Research and Forecasting (WRF) model. A simple parameterization of irrigation processes is added ...


Wpływ Prędkości I Kierunku Wiatru Na Jakość Powietrza W Krakowie, Robert Oleniacz, Marek Bogacki, Adriana Szulecka, Mateusz Rzeszutek, Marian Mazur 2016 AGH University o Science and Technology

Wpływ Prędkości I Kierunku Wiatru Na Jakość Powietrza W Krakowie, Robert Oleniacz, Marek Bogacki, Adriana Szulecka, Mateusz Rzeszutek, Marian Mazur

Robert Oleniacz

The paper discusses the role of wind speed and direction in shaping the levels of pollutant concentrations in the air in Krakow. For this purpose, the hourly averaged measurements of meteorological parameters and concentrations of selected air pollutants (PM10, PM2,5, NOx, NO2, SO2, CO, O3, and C6H6) derived from the period of 2014-2015 and recorded within the area of Krakow city were used, with the differentiation associated with the type and location of measuring stations. Impact assessment of the meteorological parameters on air pollutant concentrations was determined with a nonparametric Spearman’s rank correlation coefficient values and on the ...


The Influence Of Assimilated Targeted Observations Upon Ensemble Forecasts Of Convection Initiation, Alexandra Marie Keclik 2016 University of Wisconsin-Milwaukee

The Influence Of Assimilated Targeted Observations Upon Ensemble Forecasts Of Convection Initiation, Alexandra Marie Keclik

Theses and Dissertations

The influence of assimilating targeted meso-α- to synoptic-scale observations collected in the upstream, pre-convective environment upon subsequent short-range ensemble forecasts of convection initiation (CI) across the central United States for the fifteen aircraft missions conducted by the Mesoscale Predictability Experiment (MPEX) in May and June 2013 is evaluated in this study. Utilizing the ensemble Kalman filter implementation within the Data Assimilation Research Testbed software package as coupled to version 3.4.1 of the Advanced Research version of the Weather Research and Forecasting model, two nearly-identical thirty- member ensembles of short-range forecasts are conducted for each mission. Initial conditions for ...


Comparing Simple And Ordinary Kriging Methods For 2015 Iowa Precipitation, Caleb Wood 2016 Iowa State University

Comparing Simple And Ordinary Kriging Methods For 2015 Iowa Precipitation, Caleb Wood

Honors Projects and Posters

The difference between simple kriging (SK) and ordinary kriging (OK) is the reliance on the assumption of stationarity. This study tested the importance of this assumption for creating accurate, continuous maps of Iowa precipitation for 2015. Spatial interpolation is a process in which unobserved locations in a particular geographic region are estimated by using the observed points nearby. Stationarity is defined by the mean and distribution of the data remaining constant. SK relies on this assumption while OK does not. In this study, these predictive tools estimated annual precipitation for unobserved locations across the state from a limited number of ...


The Intensification And Effects Of Storm Events During ‘El Nino Years’ In The Atlanta Metropolitan Area, William Scandrett 2016 Georgia State University

The Intensification And Effects Of Storm Events During ‘El Nino Years’ In The Atlanta Metropolitan Area, William Scandrett

Georgia State Undergraduate Research Conference

No abstract provided.


History's Perfect Storms, Mary Lampkin 2016 Georgia State University

History's Perfect Storms, Mary Lampkin

Georgia State Undergraduate Research Conference

No abstract provided.


Don’T Forget Your Gloves: How Weather Helped Changed World War Ii, Nick A. Lommen 2016 Georgia State University

Don’T Forget Your Gloves: How Weather Helped Changed World War Ii, Nick A. Lommen

Georgia State Undergraduate Research Conference

No abstract provided.


Cold Temperatures And Burndown Herbicides, Robert G. Hartzler 2016 Iowa State University

Cold Temperatures And Burndown Herbicides, Robert G. Hartzler

Integrated Crop Management News

The weather forecast appears to be favorable for field activities so people will be anxious to get into the field. A concern for many will be the effect of the widespread freeze on the performance of burndown herbicides. Unfortunately, there is no simple blanket statement that can be made since the plant response will vary depending on weed species, weed size, and the herbicides used.


2009 Corn Quality Issues, Charles R. Hurburgh, Roger Elmore 2016 Iowa State University

2009 Corn Quality Issues, Charles R. Hurburgh, Roger Elmore

Charles R. Hurburgh, Jr.

The state experienced a hard freeze Oct. 10 and 11, ending a growing season that had been slowed by rain and, in some areas snow. Despite the overall cool growing season – highlighted by a warm period in early September – the USDA October yield estimate of 186 bushels per acre in Iowa is the highest on record. As often happens with high grain yields, quality issues are surfacing. This article summarizes current field conditions, looks at test weight, weight shrink, and corn storability; two other articles in this series discuss field molds and storage management.


Polarimetric Radar Signatures Of Supercell Thunderstorms In Tropical Cyclones, Emily Paltz, Matthew Van Den Broeke 2016 University of Nebraska - Lincoln

Polarimetric Radar Signatures Of Supercell Thunderstorms In Tropical Cyclones, Emily Paltz, Matthew Van Den Broeke

UCARE Research Products

Background It is necessary for operational meteorologists to forecast quickly and accurately when storms have the potential of producing severe weather such as tornadoes or hail. Presently, radar represents the most effective way to monitor storms in real time. The National Weather Service recently upgraded the national radar network to polarimetric capability. Much time and resources have been devoted to understanding the development of Great Plains supercells such that polarimetric radar schematics have been developed for them. Little, however, has been done for tropical cyclone supercells. In this study we wish to determine typical polarimetric radar structure for supercells in ...


Seagrass Community Change At Three High Risk Ports In The Great Barrier Reef World Heritage Area From 2005 To 2014, Celeste Venolia 2016 SIT Graduate Institute - Study Abroad

Seagrass Community Change At Three High Risk Ports In The Great Barrier Reef World Heritage Area From 2005 To 2014, Celeste Venolia

Independent Study Project (ISP) Collection

Seagrass meadows are extremely valuable and dynamic ecosystems currently facing pressure from anthropogenic disturbances. Seagrass ecosystems are declining globally because of direct and indirect threats that shift environmental conditions controlling seagrass distribution. Seagrass species responses to disturbances vary based on a number of factors including life history strategy. The goal of this study was to map and analyze patterns of dominant seagrass species change at Cairns and Gladstone from 2005-2014 and Townsville from 2007-2014. This compilation data set was symbolized according to the life history strategy of the species. The major disturbances during this time period were physical damage from ...


The Influence Of Tropical Cyclones On Droughts And Warm Season Precipitation In Tennessee And Kentucky, Lamar S. Coats 2016 Western Kentucky University

The Influence Of Tropical Cyclones On Droughts And Warm Season Precipitation In Tennessee And Kentucky, Lamar S. Coats

Masters Theses & Specialist Projects

The Southeast United States during summer and fall is often affected by droughts and tropical cyclones. Both phenomena rank among the most expensive of natural hazards, although droughts are not as feared by the public as hurricanes. When a tropical cyclone causes a pendulum swing from drought to wet conditions, it is known as a “drought-busting tropical cyclone.” The majority of the research related to drought busting tropical cyclones investigates only the storms during their tropical cyclone phase, which covers the southeastern states that have boundaries adjacent to the Atlantic Ocean. An unanswered question from this literature is whether or ...


Validation Of A High-Resolution Precipitation Database (Chirps) Over Cyprus For A 30-Year Period, D. Katsanos, A. Retalis, S. Michaelides 2016 Selected Works

Validation Of A High-Resolution Precipitation Database (Chirps) Over Cyprus For A 30-Year Period, D. Katsanos, A. Retalis, S. Michaelides

Adrianos Retalis

A study for a 30-year period (1981–2010) for a new precipitation database is performed over the island of Cyprus. Climate Hazards Group Infrared Precipitation with Station data (CHIRPS) is a more than 30-year quasi-global rainfall dataset, spanning 50°S–50°N (and all longitudes). Starting in 1981 to near-present, CHIRPS incorporates 0.05° resolution satellite imagery with in situ station data to create gridded rainfall time series. In this study, CHIRPS database is firstly compared to other precipitation databases over the Mediterranean basin. In the following, this study focuses over Cyprus, where a dense and reliable network of rain ...


Environmental Controls On Pyrocumulus And Pyrocumulonimbus Initiation And Development, Neil Lareau, Craig Clements 2016 San Jose State University

Environmental Controls On Pyrocumulus And Pyrocumulonimbus Initiation And Development, Neil Lareau, Craig Clements

Faculty Publications

In this paper we present the first direct observational evidence that the condensation level in pyrocumulus and pyrocumulonimbus clouds can be significantly higher than the ambient lifted condensation level. In addition, we show that the environmental thermodynamic profile, day-to-day variations in humidity, and ambient wind shear all exert significant influence over the onset and development of pyroconvective clouds. These findings are established using a scanning Doppler lidar and mobile radiosonde system during two large wildfires in northern California, the Bald Fire and the Rocky Fire. The lidar is used to distinguish liquid water from smoke backscatter during the plume rise ...


The Tornado That Struck Embry-Riddle Aeronautical University On Christmas Day, 2006: Lessons Learned From A Near-Miss, John M. Lanicci 2016 Embry-Riddle Aeronautical University - Daytona Beach

The Tornado That Struck Embry-Riddle Aeronautical University On Christmas Day, 2006: Lessons Learned From A Near-Miss, John M. Lanicci

Journal of Aviation/Aerospace Education & Research

An F2 tornado that touched down in Daytona Beach on Christmas Day afternoon caused over $50 million of damage to the Embry-Riddle Aeronautical University campus and nearby neighborhoods. The tornado was part of a severe-weather outbreak over Florida, Georgia, and South Carolina that began during the overnight hours of 25 December 2006. Examination of surface and upper-level meteorological charts and vertical soundings on the morning of 25 December showed stability and wind-shear conditions favorable for tornadic thunderstorms over this region. The evolution of the squall line that moved through east-central Florida, and the parent thunderstorm that produced the tornado was ...


Butterflies And Bow Echoes: Addressing Poor Forecasts With Ensemble Simulations, John Lawson 2016 Iowa State University

Butterflies And Bow Echoes: Addressing Poor Forecasts With Ensemble Simulations, John Lawson

Graduate Theses and Dissertations

Bow-echo structures, a subset of mesoscale convective systems (MCSs), are associated with damaging wind and hail, and are often poorly forecast within deterministic numerical weather prediction model simulations. Among other things, this may be due to inherent low predictability associated with bow echoes, error in the initial conditions ICs), and inadequate parameterization schemes (model error). Ensemble simulations account for, and measure, these uncertainties in a forecast.

A study of two bow-echo cases, simulated with multiple ensemble configurations, find that location and timing variation of the simulated systems reduce when certain parameters are fixed (i.e., ICs; microphysical parameterizations). However, variations ...


Biomass Sorghum And Maize Have Similar Water-Use-Efficiency Under Non-Drought Conditions In The Rain-Fed, Midwest Us, Matthew Roby 2016 Iowa State University

Biomass Sorghum And Maize Have Similar Water-Use-Efficiency Under Non-Drought Conditions In The Rain-Fed, Midwest Us, Matthew Roby

Graduate Theses and Dissertations

Biomass sorghum [Sorghum bicolor (L.) Moench.] is a candidate bioenergy feedstock in the Midwest, US. Research suggests that biomass sorghum is more drought tolerant and has higher water-use-efficiency (WUE; the ratio of cumulative biomass production to total evapotranspiration; g kg-1) than Zea mays (maize) in water-limiting environments. However, comparisons of the seasonal evapotranspiration (total ET) and WUE of biomass sorghum and maize have focused on irrigated systems and are scarce for the rain-fed, Midwest. We conducted a side-by-side comparison of the total ET and WUE of maize and biomass sorghum at a site within the US Corn Belt. Total ET ...


Improvement Of Numerical Wind Forecasts At Wind Turbine Height For Wind Ramp Events Within The Stable Boundary Layer, David E. Jahn 2016 Iowa State University

Improvement Of Numerical Wind Forecasts At Wind Turbine Height For Wind Ramp Events Within The Stable Boundary Layer, David E. Jahn

Graduate Theses and Dissertations

Although the forecast capability of numerical weather prediction models has improved significantly over the past decades, there still exists significant issues related to model representation of the complex dynamics of the boundary layer (BL), which impede the realization of turbine-height wind forecast accuracy. This study is an effort to revisit the basic theory of the Mellor, Yamada, Nakanishi, and Niino (MYNN) BL scheme with a focus on its function as posed for the stably stratified environment that supports the onset of a low-level jet (LLJ), a mechanism that can often result in wind ramp events, which are of special concern ...


Digital Commons powered by bepress