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 114 for “"Insolation"”.
-
Insolation transmission through a deciduous tree canopy: a winter study
… as they affect the amount of available sunlight (insolation) reaching structures placed within the visible tree shadow. Measurement was accomplished by placing a grid in throughout the entire shadow pattern formed, by each study tree between the hours of 9:00 am and 3:00 pm. Data was collected at …
-
Insolation, Precipitation, and Moisture Maps for a Virginia Geographic Information System
Climate information is valuable in understanding the ecology of systems affecting wildlife. This information is often unavailable at the landscape scale. This study evaluated the applicability of several climate factor estimates at the landscape-scale, and illustrated the usefulness of estimated …
-
Implications of Martian polar insolation levels on the climatic cycling of volatiles
Solar insolation at the poles is the driving force in Mars' seasonal climatic cycle. Mars' obliquity has varied greatly in the geologically recent past and this would have had a profound effect on the past climate. Previous studies have always assumed a spherical planet when calculating insolation. …
-
On the origins of the ice ages : insolation forcing, age models, and nonlinear climate change
… variability, a description of the full insolation forcing is also developed using Legendre polynomials to represent the spatial modes of variability and singular vectors to represent seasonal and long-term changes. The leading four spatial and temporal modes describe over 99% of the …
-
An Interactive Menu-Driven Design Tool For Stand-Alone Photovoltaic Systems
… at a location. PVONE consists of three parts - insolation, system design and economic analysis. In order to predict insolation, PVONE first utilizes the clear sky insolation model that is based on latitude, longitude and altitude of a location. Then it incorporates the standard classification …
-
Estudo teórico-experimental de um concentrador solar cilíndrico-parabólico
… prototype was submitted to various testing solar insolation condutions, wind speeds,ambient temperatures. For a fixing rate of flow of the working fluid, several temperatures were measured as follows: inlet and outled fluid temperature in the receiver tube, bulk fluid temperature in the storage …
-
Cyclostratigraphy And Sedimentation Of The Cenomanian-Turonian Tuscaloosa Marine Shale
… were used in concert with previously published insolation and biostratigraphic data and unpublished stable carbon isotope data to determine sedimentation rate, to identify and correlate the cretaceous oceanic anoxic event 2 (OAE 2) recovery period within the studied interval, and to determine …
-
Reconstructing atmospheric changes in Monsoon regions using eolian dust
… in response to forcing by high-latitude insolation and boundary condition change. In Chapters 2 and 3 I use 230Thxsnormalization to construct high-resolution eolian dust flux records from sedimentary archives downwind from the West African and East Asian Monsoon regions respectively. The …
-
Ecological studies of fungi growing on isolated wood
… soft rot fungi is submitted. The influence of insolation on the temperature-and moisture ranges in wood was investigated. Temperatures up to 160C above ambient were recorded as a result of insolation and data is submitted on the diurnal temperature cycle in a block of wood undergoing …
-
Ecological Studies of Fungi Growing on Insolated wood
… soft rot fungi is submitted. The influence of insolation on the temperature and moisture ranges in wood was investigated. deere up to 16°C above ambient were recorded as a result of insolation and data is submitted on the diurnal temperature cycle in a block of wood undergoing insolation. It is …
-
HOLOCENE PALAEOCLIMATE RECONSTRUCTION FROM N EW ZEALAND PEATLANDS
… been due to an increasing differential between insolation received at these latitudes, ultimately forced by the precessional cycle. The 'Mid-Holocene Transition' to wet conditions appears to contradict previous work from New Zealand that infers a drier late Holocene. This apparent contradiction …
-
Orbital Forcing of Late Miocene-Pleistocene Environmental Change in the Zhada Basin, SW Tibetan Plateau
… 1 sample/2.8 kyr), tuned to the record of daily insolation (35°N) reveals the dominance of 100 kyr and 20 kyr cycles. These results suggest that variations in daily insolation drove late Miocene–early Pleistocene high-frequency ISM variability and environmental changes in the high-elevation …
-
Dating and Interpretation of Secondary Carbonate Deposits from the Last Interglacial
… can only partly be explained by northern summer insolation maxima, which are thought to be the main trigger for climatic shifts by most paleoclimate researchers. A better correspondence is achieved by comparing the growth phases with the flux of Galactic Cosmic Rays reconstructed from deep sea …
-
Using time-independent analysis in optimizing inverter efficiency for grid-connected photovoltaic systems
… power to handle the frequently occurring low-insolation conditions, while the other inverter is large enough to handle the high-insolation regime. The application of this new con guration leads to energy savings as well as e ciency and reliability improvements. A feasibility study taking into …
-
A methodology for evaluating photovoltaic-fuel hybird energy systems
… is used to determine the nature of available insolation at a particular site. The expected value of hourly insolation is used in the planning study. The aim of the operation study is to validate the results of planning study in the shorter operational time frame, and determine the fuel cell …
-
Solar-thermal hybridization of Advanced Zero Emissions Power Plants
… 38.8%. Moreover, simulations of variable solar insolation for collector area of 550,000 m2 , show that incremental solar efficiency increased with solar insolation reaching a plateau around 17%. Simulations of the direct solar preheater, show a net electric output of 501.3 MW for a solar share …
-
Evaluating the ecosystem services and disservices provided by Mediterranean woodlands
… made steep slopes and areas with lower solar insolation available for colonisation. The carbon content of regenerating woodland was mapped using high resolution, overlapping, airborne imagery and structure-from-motion techniques, and the age of woodland was estimated using historic land cover …
-
Reconstructing atmospheric changes in monsoon regions using eolian dust
… in response to forcing by high-latitude insolation and boundary condition change. In Chapters 2 and 3 I use ²³⁰Thxs-normalization to construct high-resolution eolian dust flux records from sedimentary archives downwind from the West African and East Asian Monsoon regions respectively.
Page 1 of 6