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.
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Showing 1 to 20 of 34 for “"shortwave radiation"”.
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Climatic factors influencing Last Glacial Maximum and modern glacial conditions in the tropical and subtropical Andes
… at that time. Furthermore, results show that shortwave radiation plays a significant role in driving tropical and subtropical ELAs. Results indicate that LGM decreases in shortwave radiation contributed to over 30% of total ELA depressions in the tropical Andes. In the subtropical Andes, …
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A numerical study of cropland-atmosphere feedbacks by incorporating a crop growth module in the WRF model
… growth depends directly on temperature, incoming shortwave radiation and precipitation. As the crops grow, they affect energy partitioning between sensible and latent heat leading to a change in the cloud cover and consequently changing incoming shortwave radiation, air temperature and …
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Application of Wavelet Analysis for Examining Climate and Meltwater Runoff in the Paakitsoq Region, West Greenland
… aims to investigate the relationship between net shortwave radiation, air temperature and proglacial discharge using wavelet analysis in order to establish the variability of discharge on short (<1-3 days) timescales and how this is driven by meteorological factors on similar (<1-4 days) …
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Water temperature of Alpine streams in response to discharge and radiation
… temperature, discharge and their response to shortwave radiation in a highly glacierised Alpine basin. Due to the high altitude, the Alps have one of the highest solar radiation budgets in Europe and demonstrated almost double the rate of warming of the Northern Hemisphere. Understanding the …
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Bias correction of global circulation model outputs using artificial neural networks
… temperature, specific humidity, net longwave and shortwave radiation are used as inputs for the bias correction of temperature. Precipitation at lag zero, one, two, and three, and the standard deviation from 3 by 3 neighbors around the pixel of interest are the inputs into the ANN bias correction …
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Evaluating the relationship between the temperature response to volcanic aerosols and climate sensitivity
… temperature response to top-of-atmosphere shortwave radiation response following Pinatubo, when excluding one anomalous model. In this thesis, Bender et al.'s calculation for CMIP3 models was repeated and was found to give a correlation coefficient of -0.44 (p = 0.23), which is lower than …
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Evaluating impacts of hydroclimatic extremes on water use efficiency and carbon use efficiency of northern ecosystems
… Air Temperature (TA), Soil Temperature (TS), and Shortwave Radiation (SW) showed varying importance depending on the vegetation type and moisture regime. These findings underline the non-linear complexity of high-latitude ecosystem responses to climate change, emphasising the critical need for …
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A Numerical Study of the Sensitivity of Cloudy-Scene Bidirectional Reflectivity Distribution Functions to Variations in Cloud Parameters
… to characterize the sensitivity of the earth's shortwave bidirectional reflectivity distribution function (BRDF) to variations in cloud parameters. The BRDF is a remote sensing tool used to predict the flux reflected from a given earth scene from a satellite-based measurement of the reflected …
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Development of national extent terrain attributes (TANZ), soil water balance surfaces (SWatBal), and environmental surfaces, and their application for spatial modelling of Pinus radiata productivity across New Zealand
… and four secondary terrain attributes; 13 shortwave radiation surfaces, topographically adjusted (one annual and 12 monthly surfaces); and 39 soil water balance model surfaces (one annual and 12 monthly surfaces for fraction of available root zone water storage, available root zone water …
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Simulation of variability in the tropical Western Indian Ocean
… heat flux exchanges driven by the anomalous shortwave radiation dominate the weakest interannual SST variability in the Tanzanian shelf region, with some contribution by the advection of heat anomalies from the NEMC. Further offshore, the strongest interannual variability of the SST is …
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Prediction and Measurement of Thermal Exchanges within Pyranometers
… Eppley Precision Spectral Pyranometer (PSP) is a shortwave radiometer that is widely used in global networks to monitor solar irradiances at the earth's surface. Within the instrument, a blackened surface is in intimate thermal contact with the hot junction of a thermopile. The cold junction of …
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Modeling land surface processes of the midwestern United States : predicting soil moisture under a warmer climate
… and an overestimation of incident surface shortwave radiation, net long wave radiation, and total runoff. In addition, an agricultural plant functional type was added to RegCM3-IBIS to better represent the current vegetation cover of the midwestern United States. The sensitivity of latent …
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Changes in shortwave solar radiation under local and transported wildfire smoke plumes: implications for agriculture, solar energy, and air quality applications
… the atmospheric column affects incoming shortwave solar radiation with potentially wide-ranging consequences. By absorbing and scattering light, smoke changes the amount and characteristics of shortwave radiation–a resource that controls plant photosynthesis, solar energy generation, and …
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The development and application of IceLake, an accurate and computationally efficient model of supraglacial lake evolution in the ablation zone of the Greenland Ice Sheet
… I0 term, which controls the amount of incoming shortwave radiation that can enter a lake’s water column. IceLake is applied to a 100–2200 m a.s.l. elevation transect of Upernavik Isstrøm Glacier (72.8°N) in West Greenland to investigate the dependence of lake evolution on elevation. When only …
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Towards a robust life cycle assessment tool for sustainable pavement designs : quantifying context-specific impacts of pavement albedo
… as albedo. High-albedo surfaces reflect more shortwave radiation, exerting "radiative forcing" (RF) on the earth. It also affects the ambient temperature and results in changes in building energy demand (BED). In the past, the impacts of pavement albedo were often ignored or quantified using …
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Physical mechanisms controlling self-aggregation of convection in idealized numerical modeling simulations
… in a non-rotating framework, with interactive radiation and surface fluxes and fixed sea surface temperature. Self-aggregation only occurs at sea surface temperatures above a certain threshold. As the system evolves to an aggregated state, there are large changes to domain averaged quantities …
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Land-atmosphere interaction and radiative-convective equilibrium
… I calculate how averaging the incident solar radiation can lead to biases in idealized climate models. I derive an expression for the absorption-weighted solar zenith angle, which minimizes the bias in mean absorbed shortwave radiation, and I find that it is closely matched by the …
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Simple Models for Complex Tropical Dynamics
… asymmetry in this bias can be traced back to radiation absorbed by the atmosphere, which is associated with dust (for shortwave radiation) and total column water (for longwave radiation). As a whole, this thesis demonstrates the utility of studying complex problems with simple models and …
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Quantification of the Impact of Supraglacial Lakes and Slush on Surface Energy Balance of Ice Shelves: Nivlisen Ice Shelf, East Antarctica
… and slush regions is most sensitive to incident shortwave radiation, although local ice shelf processes affect spatial variability of sensible and latent heat fluxes. The results of the SEB model are validated by comparing modelled cumulative energy absorption at SGLs with inferred energy …
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Hydrodynamics of a coral atoll lagoon and its connection to large-scale climate variability
… and air–sea interactions, including solar radiation, evaporation, and precipitation, govern variability in circulation, temperature, and salinity. These different forcing mechanisms across the lagoon drive pronounced spatial heterogeneity in the lagoon hydrodynamic conditions. The impact of …
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