scholarly journals The University of South Alabama Mesonet and Coastal Observing System: A Technical and Statistical Overview

2010 ◽  
Vol 27 (9) ◽  
pp. 1417-1439 ◽  
Author(s):  
Sytske K. Kimball ◽  
Madhuri S. Mulekar ◽  
Shailer Cummings ◽  
Jack Stamates
Keyword(s):  
Weather Forecasting ◽  
Meteorological Data ◽  
Future Research ◽  
Sensor Failure ◽  
North Central ◽  
The North ◽  
System A ◽  
The University ◽  
Mexico Coast ◽  
Good Agreement

Abstract The University of South Alabama Mesonet consists of 26 sites across the north-central Gulf of Mexico coast. Although the original purpose of the mesonet was monitoring landfalling tropical systems, meteorological data are collected and disseminated every 5 min year-round to serve a multitude of purposes, including weather forecasting, education, and research. In this paper a statistical analysis and like-sensor comparison demonstrates that variables, measured by different sensor types or by sensors at different heights, correlate well. The benefits of sensor redundancy are twofold, offering 1) backup sensors in the case of sensor failure during severe weather and 2) the ability to perform a large number of internal consistency checks for quality control purposes. An oceanographic compliment to the University of South Alabama Mesonet system, which was deployed by NOAA’s Atlantic Oceanographic and Meteorological Laboratory (AOML) to measure surface waves and ocean currents in an area south of Mobile, Alabama, is described. A preliminary comparison of mesonet wind data and ocean wave data show good agreement, offering promising opportunities for future research.

Poplar breeding and testing strategies in the north-central U.S.: Demonstration of potential yield and consideration of future research needs

2001 ◽  
Vol 77 (2) ◽  
pp. 245-253 ◽  
Author(s):  
Don E. Riemenschneider ◽  
J. G. Isebrands ◽  
William E. Berguson ◽  
Donald I. Dickmann ◽  
Richard B. Hall ◽  
...  
Keyword(s):  
Principal Component ◽  
Future Research ◽  
Environment Interaction ◽  
Research Needs ◽  
Above Ground Biomass ◽  
University Of Minnesota ◽  
Potential Yield ◽  
North Central ◽  
Ground Biomass ◽  
The North

We present results from a Populus Regional Testing Program that has been conducted in Minnesota, Iowa, Wisconsin, and Michigan over the past six years. Our objectives have been to: 1) identify highly productive, disease resistant intra- and inter-specific clonal selections and 2) understand patterns of genotype × environment interactions within the region that would, logically, govern commercial deployment of new clones. Clones were developed by breeding and selection programs at the University of Illinois, Iowa State University, University of Minnesota, and the USDA Forest Service for experiments established in 1995. We report results of analyses of variance and principal component analyses of tree diameters and estimated above-ground biomass that demonstrate significant genotype main effects and significant genotype × environment interactions. Maximum mean annual above-ground biomass increments have surpassed 16 Mg ha−1 y−1, exceeding previously reported yields of poplars grown under similar conditions in the north-central U.S. We also discuss the breeding and selection of poplars in general with specific attention to regional research needs. Key words: Populus, biomass, multi-trait selection, genotype, genotype × environment interaction

Mechanisms of late Quaternary fault throw-rate variability along the north central Gulf of Mexico coast: implications for coastal subsidence

2016 ◽  
Vol 29 (5) ◽  
pp. 557-570 ◽  
Author(s):  
Zhixiong Shen ◽  
Nancye H. Dawers ◽  
Torbjörn E. Törnqvist ◽  
Nicole M. Gasparini ◽  
Marc P. Hijma ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Late Quaternary ◽  
North Central ◽  
The North ◽  
Mexico Coast

scholarly journals Agricultural production responding to climate change in the north central coast of vietnamidentified bythe amount of rainfall and potential evapotranspiration (PET)

2018 ◽  
Vol 2 (6) ◽  
pp. 5-10
Author(s):  
Nguyen Thi Hoang Anh ◽  
Mai Kim Lien
Keyword(s):  
Climate Change ◽  
Plant Growth ◽  
Agricultural Production ◽  
Weather Forecasting ◽  
Potential Evapotranspiration ◽  
Modern Technology ◽  
Central Coast ◽  
Monthly Basis ◽  
North Central ◽  
The North

Climate change is driving dangerous and more unpredictable weather. It has broken historical records of hydro-meteorological observations, consequently leading challenges in operational forecasting. In order to improve crop yield and reduce impacts of climate change on agricultural production, it is necessary to obtain sources of weather information. The estimations of rainfall and PET can enable us to identify plant growth and water supply capacity for any plant in the mountainous areas at Quy Hop District, Nghe An (one part of the North Central Coast) on a monthly basis. The updated information on weather forecasting technology and the application of modern technology responding to climate change in Quy Hop provided results related to cumulative rainfall chart. It can forecast accurately the plant growth and the best time for watering plants and plays an important role in the agricultural production.  

scholarly journals Vegetational History of Yellowstone Park as Determined by Pollen Analysis

1978 ◽  
Vol 2 ◽  
pp. 87-91
Author(s):  
George Frison ◽  
Jane Beiswenger
Keyword(s):  
Sediment Cores ◽  
Lake Basin ◽  
Large Lake ◽  
Yellowstone Lake ◽  
North Central ◽  
University Of Utah ◽  
The North ◽  
History Of ◽  
Park Area ◽  
The University

The purpose of this project was to interpret the vegetational history of the Yellowstone Park area by the analysis of pollen contained in sediment cores from four locations in Yellowstone Lake. The cores, collected by Dr. Robert Smith of the University of Utah, were from the north central portion, the west thumb area, the south arm and the southeast arm of the lake. The cores were to be compared to determine pollen variations within the lake. Differences between a small pond and a large lake basin in reflecting climatic change were to be studied by comparing the results with pollen counts from Fifteen Foot Lagoon (Baker, 1976).

scholarly journals Study of Seasonal Surface Refractivity over North-Central Nigeria

2021 ◽  
pp. 5-13
Author(s):  
Muhammad Ladan ◽  
Oyedum David ◽  
Jibrin Yabagi ◽  
Ndanusa Babakacha ◽  
Mohammed Kimpa ◽  
...  
Keyword(s):  
High Frequency ◽  
Meteorological Data ◽  
Central Zone ◽  
Ground Level ◽  
Weather Conditions ◽  
Very High Frequency ◽  
International Telecommunication Union ◽  
North Central ◽  
The North ◽  
The Mean

Tropospheric radio wave signals experience loss due to multipath effect, scattering and other forms of attenuation through the atmospheric medium, primarily due to variations in weather conditions with time. The knowledge of surface refractivity profile is important for optimal planning of Very High Frequency/Ultra High Frequency (VHF/UHF) terrestrial radio links in a region. The study of surface refractivity (Ns) over the North-Central Nigeria was carried out using meteorological data from seven locations in North-Central zone of Nigeria. The seasonal variations of Ns were also derived using the monthly summaries of surface data obtained from Nigerian Meteorological Agency (NIMET) over seven stations of Abuja, Lafia, Lokoja, Makurdi, Jos, Minna and Ilorin between 2005 and 2010.The results indicated that the monthly averages of radio refractivity during the rainy season months (April to October) are greater than the Ns values during the dry season months (November to March) for all the locations throughout the years of the study. The computed of mean monthly Ns over all the seven stations in the first 1 km above the ground level is 348 N-units, which gives mean refractivity gradient (dN/dh) of -49 N/k, these shows that the region is characterised by low scale super-refraction. The mean k-factor over the entire region in the first 1 km above the ground level is 1.4; the mean Field Strength Variability (FSV) in first 1 km of height in the region was calculated to be 14 dB. The mean Radio Horizon distance within 1 km height for a transmitter height of 100 m over the stations is 42 km. The results provide useful information needed by radio engineers to set up new terrestrial radio propagation links or to improve on the existing ones especially at VHF, UHF in the North-Central region of Nigeria, as recommended by International Telecommunication Union Recommendations (ITU-R P.453, 2013), which observed the need for local reference data on refractivity and refractivity gradients all over the world.

Interaction between herbicides, time of application and genotype of wild oats (Avena fatua L.)

1977 ◽  
Vol 28 (4) ◽  
pp. 671 ◽  
Author(s):  
JG Paterson
Keyword(s):  
Seedling Emergence ◽  
Avena Fatua ◽  
Future Research ◽  
North Central ◽  
Time Of Application ◽  
Wild Oats ◽  
The North ◽  
Matter Production ◽  
Subspecies Level ◽  
Optimum Application

A glasshouse experiment was conducted on three groups of genotypes of Avena fatua L. representing those from the north, central and southern regions of the temperate area of Western Australia with a winter growing season. The interaction between genotype groups, three herbicides (barban, difenzoquat and flamprop-methyl) and six times of application was investigated. The results showed that all genotypes did not react similarly to the herbicides tested. Barban, in particular, was very susceptible to the genotype x time of application interaction. Reasons for this are suggested. These include the effect of climatic parameters on the evolution of predominant genotypes in various areas, together with micromorphological variability developed in response to environmental pressure. It is also suggested that the number of days after seedling emergence is as reliable a guide as leaf number for optimum application of barban and that mature wild oat seed-head counts may not adequately reflect important competitive attributes such as dry matter production. The possible erroneous extrapolation to subspecies level from data collected on a species basis is emphasized, as is the possibility of differentially specific herbicides contributing to population shifts towards greater herbicide resistance, and not only in wild oats. Lines of future research are indicated.

scholarly journals Carbon Flux of Down Woody Materials in Forests of the North Central United States

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
C. W. Woodall
Keyword(s):  
United States ◽  
Forest Inventory ◽  
Woody Debris ◽  
Stand Age ◽  
Future Research ◽  
Study Region ◽  
North Central ◽  
The North ◽  
C Stocks ◽  
Central United States

Across large scales, the carbon (C) flux of down woody material (DWM) detrital pools has largely been simulated based on forest stand attributes (e.g., stand age and forest type). The annual change in forest DWM C stocks and other attributes (e.g., size and decay class changes) was assessed using a forest inventory in the north central United States to provide an empirical assessment of strategic-scale DWM C flux. Using DWM inventory data from the USDA Forest Service's Forest Inventory and Analysis program, DWM C stocks were found to be relatively static across the study region with an annual flux rate not statistically different from zero. Mean C flux rates across the study area were 0.25, 0.12, 0.01, and 0.04 (Mg/ha/yr) for standing live trees, standing dead trees, coarse woody debris, and fine woody debris, respectively. Flux rates varied in their both magnitude and status (emission/sequestration) by forest types, latitude, and DWM component size. Given the complex dynamics of DWM C flux, early implementation of inventory remeasurement, and relatively low sample size, numerous future research directions are suggested.

scholarly journals RISKS FOR THE CAREER DEVELOPMENT OF THE YOUNG ENGINEERS UNDER THE CONDITIONS OF ECONOMIC STAGNATION: A CASE STUDY FOR THE UNIVERSITY OF RUSE

2017 ◽  
Vol 20 (3) ◽  
Author(s):  
OGNYAN DINOLOV ◽  
NICOLAY MIHAILOV
Keyword(s):  
Career Development ◽  
Swot Analysis ◽  
Decision Makers ◽  
North Central ◽  
The North ◽  
Economic Stagnation ◽  
The University ◽  
Social Demographic ◽  
Implementing Strategies

<p>The trends in the number of applicants and of the admission of students in engineering specialties in the University of Ruse, Bulgaria are analyzed in this work. It is found that the admission of students constantly decreases throughout the considered period (2009-2013). The structure of the main sectors of the economy of the North-Central Region of Bulgaria, particularly Ruse District, is reviewed. The largest share is of the sector of the Mechanical Engineering followed by the Chemical Industry sector. The risk of inefficient use of financial and human resources, caused by the economic stagnation, is indicated. S-O, S-T, W-O and W-T strategies for reducing the adverse effect of the economic, social, demographic and other factors are synthesized using SWOT analysis. This will helps politicians, decision makers and managers to overcome the risk for the career development of the young engineers inRuseregion, and inBulgaria. The obtained results can be used in building, designing and implementing strategies to overcome the investigated problems.</p>

scholarly journals Sugarcane Variety Trials in Puerto Rico, 1952-57

1969 ◽  
Vol 43 (1) ◽  
pp. 1-18
Author(s):  
F. Méndez-Roig ◽  
G. Samuels ◽  
A. Colón
Keyword(s):  
Puerto Rico ◽  
Sugarcane Variety ◽  
University Of Puerto Rico ◽  
Agricultural Experiment Station ◽  
North Central ◽  
Eastern Area ◽  
Variety Trials ◽  
The North ◽  
Agricultural Experiment ◽  
The University

The sugarcane variety trials performed by the Agricultural Experiment Station of the University of Puerto Rico, Río Piedras, P.R., during the period 1952-57, involved 24 separate experiments and 51 crops. The following results are significant: 1. In the production of available 96° sugar per acre P.R. 980 was the outstanding variety of the Southern, Western, Northwestern, and Interior Areas of the Island. B. 37161 was first in the Eastern Area and in Caguas Valley, and it tied P.R. 980 in the North Central and B. 41227 in the Northeastern Areas of Puerto Rico. 2. P.R. 980 was first in 10 and B. 37161 in 6 of the 24 experimental sites in terms of tons of cane produced per acre. 3. The check varieties, M. 336, P.O.J. 2878, and P.R. 902 and 905, produced low yields in both tons of cane and of sugar per acre as compared with the leading varieties. 4. M. 336, P.R. 1016, M. 975, and P.P.Q.K. were the leading varieties in sucrose-percent-cane. 5. P.R. 980 and P.R. 1013 ranked first in tons of sugar produced per acre per month. 6. For agronomic evaluation, the leading varieties were ranked in a table in which consideration was given to such factors as germination, stooling, ratooning habit, girth, erectness, flowering, trashiness, and disease resistance.

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