Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 132 for “"meteorological conditions"”.
-
The relation of microseisms to meteorological conditions
Thesis. (M.S.) Massachusetts Institute of Technology. Dept. of Geology, 1954.
-
The pollen and spores of metropolitan Cape Town and their relationship with meteorological conditions
… the dominant partner in the atmosphere. Meteorological factors such as wind speed and wind direction, precipitation, temperature, relative humidity, atmospheric pressure and atmospheric stability have been identified as affecting air spora concentrations and an attempt is made to explain …
-
Impact of Meteorological Conditions and Maturity of Perithecia on the Release of Fusarium graminearum Ascospores
… of this work was to assess the influence of meteorological conditions and perithecial maturity on ascospore release. The research focuses on F. graminearum because of its damaging impact to staple crops and the global ubiquity of FHB. The first specific objective was to apply …
-
Turnover and fluxes of carbon and nitrogen in a spruce forest under natural and extreme meteorological conditions
… in the intensity and frequency of extreme meteorological climate events like extended summer droughts, heavy rainfall or intensive frost periods with largely unknown effects on microbial activity and pysico-chemical soil properties and their impact on availability of soil organic matter. …
-
The Effects of Water Storage and Meteorological Conditions on Enteric Infections from a Matched-Control Trial in Beira, Mozambique
… water storage practices, as well as impacts of meteorological conditions, may interfere with the progress made by drinking water interventions. Results from the PAASIM study, a matched-control trial assessing a piped water supply intervention in Beira, Mozambique, showed that provision of …
-
Assessing If Motivation Impacts General Aviation Pilots’ Persistence in Varying Weather Conditions
… flight under visual flight rules into instrument meteorological conditions is the predominant cause for fatal accidents by percentage, for general aviation aircraft operations. It is possible that a pilot’s motivation or reason for flying will override other safer, more logical courses of action …
-
System analysis using automatic dependent surveillance broadcast (ABS-B) for closely spaced parallel approaches
… to increase capacity. During visual flight conditions parallel runways operate independently at maximum capacity. During non-visual meteorological conditions operating procedures are modified to assure safe operations. Capacity reductions of 50% may occur depending on the runway spacing. New …
-
ΠΕΙΡΑΜΑΤΙΚΗ ΜΕΛΕΤΗ ΤΟΥ ΑΤΜΟΣΦΑΙΡΙΚΟΥ ΟΡΙΑΚΟΥ ΣΤΡΩΜΑΤΟΣ ΠΑΝΩ ΑΠΟ ΕΝΑ ΟΞΥ ΒΟΥΝΟ
… BALLOON AS WELL AS STANDARD GROUND BASED METEOROLOGICAL INSTRUMENTATION. THE MEASUREMENTS WERE CARRIED OUT DURING BOTH CONVECTIVE AND STABLE METEOROLOGICAL CONDITIONS, DAYS CHARACTERIZED WITH STRONG SEA-BREEZE CIRCULATIONS AND IN ONE OCCASION DURING A COLD FRONT PASSAGE. PROFILES, …
-
Crisp and Fuzzy Signal Detection Theory and Pilot Weather Judgment: Implications for VFR Flights Into IMC
… visual flight rules (VFR) flight into instrument meteorological conditions (IMC). The situation assessment hypothesis suggests that pilots may inadvertently enter IMC because they lack the sensitivity needed to distinguish between visual meteorological conditions (VMC) and IMC. An alternative …
-
Aeropalynology in North London
… London and this is interpreted in relation to meteorological conditions, local pollen source areas, topography and the urban morphology. The analysis and forecasting of airborne pollen concentrations has relevance within three subject areas. Hayfever sufferers are able to use the forecasts to …
-
EVALUATING THE PERFORMANCE OF BIOMETRIC APPROACHES FOR VERIFICATION AND MONITORING IN COMMERCIAL FOREST CARBON ACCOUNTING
… all carbon sources and sinks, and dynamic meteorological conditions drive carbon uptake and forest growth. A combination of high temporal and spatial resolution monitoring of land-atmosphere carbon fluxes (flux towers) and stand-level biometric approaches (increment cores and forest …
-
The influence of runway occupancy time and wake vortex separation requirements on runway throughput
… and wake vortex separation, and under what conditions each becomes a constraint to runway capacity. A detailed analysis of runway occupancy time measurements and wake vortex separation measurements is performed for Boston, Philadelphia, New York La Guardia, and Newark airports based on …
-
An air pollution model for complex terrain
… inventory for the region, and a sequence of meteorological conditions. It produces estimates of pollution concentrations at each point in the region at several vertical elevations over time. This data can then be processed by a general contour plotting program to give graphical displays of …
-
Modelagem dos processos físico-químicos e atmosféricos envolvidos na formação de oxidantes fotoquímicos em megacidades: o caso da região metropolitana do Rio de Janeiro
… an integrated computational system composed of a meteorological model, biogenic / anthropogenic emissions and air quality, implemented and adequate in a high performance computational platform, for the understanding of dynamic, thermodynamic and physico-chemical processes that impact on the …
-
Fluctuating concentrations in atmospheric dispersion
… conducted under both unstable and stable meteorological conditions. The experiments were undertaken at two different sites, over both flat and gently rolling terrain. Two types of surface-level point aerosol sources were used. One is a fog-oil smoke and the other is a hexachloroethane …
-
An examination of changes in rainfall, streamflow and landcover a case study of the Kandelaars catchment, Oudtshoorn, South Africa 1926 to 2008
… the area is also exposed to seasonally extreme meteorological conditions, most notably in the form of cut-off lows, which have been projected to intensify with the changing climate.
-
Modeling and Observational Studies of Shallow Cumulus Convection Over the Indian Ocean: Aerosol and Meteorological Effects on Diurnal Cycles
… affect these quantities. For the range of meteorological conditions observed during INDOEX the semi-direct effect always dominated indirect effects, producing a positive daytime mean net indirect forcing, varying between 0.2 and 4.5 W m-2. Further, the indirect forcing was larger when the …
-
Influences on the hydrology of the Cape Columbine/St. Helena region
… first step in the study involves monitoring the meteorological occurrences which resulted in the prevailing hydrology and thus give a general background to the observed structure. It became necessary to establish two sub-systems in the area which can be distinguished on the basis of the time …
-
A limnological survey of Lake Laura, Virginia
… and secchi disc levels measured. Due to atypical meteorological conditions experienced during the study, the Vollenwieder model was utilized to evaluate the impact of various nutrient sources on Lake Laura under more typical conditions. Nonpoint source runoff from agricultural and pasture land and …
-
Modeling the effect of the energy crisis on air quality in the Po Valley, Italy.
… are also analyzed. The results indicate that meteorological conditions have a significant influence on air quality, overshadowing the potential effects of emission changes resulting from the energy crisis. However, we observed a model’s bias correlated to the planetary boundary layer height, …
Page 1 of 7