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Dissertations / Theses on the topic 'Land Surface Water'

Author: Grafiati

Published: 10 March 2023

Last updated: 31 July 2025

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1

Elbag, Mark A. "Impact of surrounding land uses on surface water quality." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-050306-155834/.

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Thesis (M.S.)--Worcester Polytechnic Institute.<br>Keywords: Conductivity, pH, Dissolved Oxygen, UV absorbance, Source Water, Surface Water, Dissolved Organic Carbon, Total Organic Carbon, Particle Counts, Turbidity, E. coli, Fecal Coliforms, West Boylston Brook, Wachusett Reservoir, source water protection, surface water protection Includes bibliographical references (p.73-77).

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2

Elbag, Jr Mark A. "Impact of Surrounding Land Uses on Surface Water Quality." Digital WPI, 2006. https://digitalcommons.wpi.edu/etd-theses/665.

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Source water protection is important to maintain public health by keeping harmful pathogens out of drinking water. Non-point source pollution is often times a major contributor of pollution to surface waters, and this form of pollution can be difficult to quantify. This study examined physical, chemical, and microbiological water quality parameters that may indicate pollution and may help to identify sources of pollution. These included measures of organic matter, particles, and indicator organisms (fecal coliforms and E. coli). The parameters were quantified in the West Boylston Brook, wh

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3

Decker, Mark Ryan. "IMPROVING THE HYDROLOGICAL CYCLE IN LAND SURFACE CLIMATE MODELS." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/195627.

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The hydrological components of land surface climate models have increased greatly in complexity over the past decade, from simple bucket models to multilayer models including separate and distinct soil water and ground water components. While the parameterizations included in these models have also increased in complexity, the fundamental ability of the numerical solution for the vertical movement of soil water in the Community Land Model (or other land surface models) to simply maintain the hydrostatic solution of the original partial differential equation has yet to be determined.Also, the a

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4

Chingombe, Wisemen. "Effects of land-cover - land-use on water quality within the Kuils - Eerste River catchment." Thesis, University of Western Cape, 2012. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5893_1373463134.

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<p><span lang="EN-GB" style="font-size: 12.0pt<br>line-height:150%<br>font-family:&quot<br>Times New Roman&quot<br>,&quot<br>serif&quot<br>">The most significant human impacts on the hydrological system are due to land-use change. The conversion of land to agricultural, mining, industrial, or residential uses significantly alters the hydrological characteristics of the land surface and modifies pathways and rates of water flow. If this occurs over large or critical areas of a catchment, it can have significant short and long-term impacts, on the quality of water. While there are methods availa

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5

De, Chiara Giovanna. "Satellite remote sensing for surface soil water content estimation." Doctoral thesis, Universita degli studi di Salerno, 2010. http://hdl.handle.net/10556/125.

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2008 - 2009<br>Satellite remote sensing is a useful source of observations of land surface hydrologic variables and processes and could be a practical substitution of conventional in-situ monitoring. Most of hydrological dynamic processes change not only throughout the years but also within weeks or months and their monitoring requires frequent observations. The most prominent advantage of the remote sensing technologies is that they offer a synoptic view of the dynamics and spatial distribution of phenomena and parameters, often difficult to monitor with traditional ground survey, wit

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6

Wang, Shusen. "Modelling water, carbon, and nitrogen dynamics in CLASS, Canadian Land Surface Scheme." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0008/NQ59692.pdf.

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7

Tediosi, A. "HERBICIDE TRANSPORT FROM LAND TO SURFACE WATER IN AN ARTIFICIALLY DRAINED CATCHMENT." Doctoral thesis, Università degli Studi di Milano, 2010. http://hdl.handle.net/2434/150206.

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Pesticide use is often associated with a number of negative impacts on the environment and on water quality. In this thesis the processes contributing to herbicide transport from land to surface water were examined, using a combination of existing data analysis, modelling, and monitoring. Field investigations of herbicide transport were conducted on an artificially drained field dominated by heavy clay soil (Denchworth soil association), in the Upper Cherwell catchment (UK). The main drain was monitored over five months during November 2009 to March 2010, when the field was in oilseed rape

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8

James, Tosin. "Changes in Land Use Land Cover (LULC), Surface Water Quality and Modelling Surface Discharge in Beaver Creek Watershed, Northeast Tennessee and Southwest Virginia." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3747.

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Beaver Creek is an impaired streams that is not supporting its designated use for recreation due to Escherichia coli (E.coli), and sediment. To address this problem, this thesis was divided into two studies. The first study explored changes in Land Use Land Cover (LULC), and its impact on surface water quality. Changes in E.coli load between 1997-2001 and 2014-2018 were analyzed. Also, Landsat data of 2001, and 2018 were examined in Terrset 18.31. Mann-Whitney test only showed a significant reduction in E.coli for one site. Negative correlation was established between E.coli load, and Develope

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9

Bourgeois-Calvin, Andrea. "Relationship between Land Use and Surface Water Quality in a Rapidly Developing Watershed in Southeast Louisiana." ScholarWorks@UNO, 2008. http://scholarworks.uno.edu/td/714.

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The Tangipahoa River and Natalbany River watersheds (Tangipahoa Parish/County) in the Lake Pontchartrain Basin (southeastern Louisiana) are experiencing rapid urbanization, particularly in the wake of the 2005 hurricane season. To document the impact of land use on water quality, thirty sites were monitored for surface water physiochemical, geochemical, and bacteriological parameters. Water quality data was compared to land use within four sub-watersheds of the Tangipahoa Watershed and three sub-watersheds of the Natalbany Watershed. Urbanization had the most profound impact on water quality o

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10

Gustafsson, David. "Boreal land surface water and heat balance : Modelling soil-snow-vegetation-atmosphere behaviour." Doctoral thesis, KTH, Mark- och vattenteknik, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3406.

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The water and heat exchange in thesoil-snow-vegetation-atmosphere system was studied in order toimprove the quantitative knowledge of land surface processes.In this study, numerical simulation models and availabledatasets representing arable land, sub-alpine snowpack, andboreal forest were evaluated at both diurnal and seasonaltimescales. Surface heat fluxes, snow depth, soil temperatures andmeteorological conditions were measured at an agriculturalfield in central Sweden during three winters and two summersfrom 1997 to 2000 within the WINTEX project. A one-dimensionalsimulation model (COUP) w

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Valayamkunnath, Prasanth. "Understanding the Role of Vegetation Dynamics and Anthropogenic induced Changes on the Terrestrial Water Cycle." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/105061.

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The land surface and atmosphere interact through complex feedback loops that link energy and water cycles. Effectively characterizing these linkages is critical to modeling weather and climate extremes accurately. Seasonal variability in vegetation growth and human-driven land cover changes (LCC) can alter the biophysical properties of the land surface, which can in turn influence the water cycle. We quantified the impacts of seasonal variability in vegetation growth on land surface energy and water balances using ecosystem-scale eddy covariance and large aperture scintillometer observations.

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12

Yeh, Pat Jen-Feng 1969. "Representation of water table dynamics in a land surface scheme : observations, models, and analyses." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29617.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2003.<br>Includes bibliographical references (leaves 198-207).<br>A recent regional-scale water balance analysis has indicated that the groundwater storage and groundwater runoff are significant terms in the monthly and annual water balance for areas with a shallow water table. However, most of the current land surface parameterization schemes lack any representation of regional groundwater aquifers. Such a simplified representation of subsurface hydrological processes would result in signific

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13

Naugler, Trudy Lynn. "Groundwater - surface water interactions in the Salmon River Watershed, BC : integrating spectroscopy, isotopes, water quality, and land use analyses." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31782.

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Understanding the sources and pathways of water pollutants is critical for protecting freshwater resources. Relationships between water quality and land use can be obscured by variable land use, seasonal variability, and interactions between surface water and groundwater. This research combines the tools of fluorescence spectroscopy, nitrate stable isotopes and water chemistry to better understand land use impacts on water quality. The Hopington aquifer, one of the most vulnerable aquifers in the Lower Fraser Valley, is a source of drinking water for the Township of Langley. This aquifer is al

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14

LIU, ZHONGWEI. "WATER QUALITY SIMULATION AND ECONOMIC VALUATION OF RIPARIAN LAND-USE CHANGES." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1153507620.

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15

Widén-Nilsson, Elin. "Global-Scale Modelling of the Land-Surface Water Balance : Development and Analysis of WASMOD-M." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8352.

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<p>Water is essential for all life on earth. Global population increase and climate change are projected to increase the water stress, which already today is very high in many areas of the world. The differences between the largest and smallest global runoff estimates exceed the highest continental runoff estimates. These differences, which are caused by different modelling and measurement techniques together with large natural variabilities need to be further addressed. This thesis focuses on global water balance models that calculate global runoff, evaporation and water storage from precipit

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16

Browning, Drew. "Modeling non-point source pollution in surface water under non-stationary climates and land uses." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1408983669.

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17

Mölders, Nicole, and Armin Raabe. "On the influence of grid resolution and land surface heterogeneity on hydrologically relevant quantities." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212321.

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Numerische Experimente wurden durchgeführt, um den Einfluß von Gittermaschenweite und subskaliger Heterogenität auf die Vorhersage der am Wasserkreislauf beteiligten Größen zu untersuchen. Die Modellergebnisse zeigen, daß die Evapotranspiration, Bewölkung und der Niederschlag von der Gittermaschenweite und der Heterogenität beeinflußt werden. Es zeigte sich, daß bei Verwendung gröberer Maschenweiten unter Einbezug der verschiedenen Landnutzungstypen innerhalb der Gittermasche die Obertlächenprozesse und Phänomene (z.B. Wärmeinseleffekt) realistischer beschrieben werden, als wenn nur ein Landnu

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18

Farhadi, Leila. "Estimation of land surface water and energy balance flux components and closure relation using conditional sampling." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70757.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 348-364).<br>Models of terrestrial water and energy balance include numerical treatment of heat and moisture diffusion in the soil-vegetation-atmosphere continuum. These two diffusion and exchange processes are linked only at a few critical points. The performance and sensitivity of models are highly dependent on the nature of these linkages that are expressed as the closure function between heat and mois

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Mölders, Nicole, and Armin Raabe. "On the influence of grid resolution and land surface heterogeneity on hydrologically relevant quantities." Universität Leipzig, 1995. https://ul.qucosa.de/id/qucosa%3A15016.

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Numerische Experimente wurden durchgeführt, um den Einfluß von Gittermaschenweite und subskaliger Heterogenität auf die Vorhersage der am Wasserkreislauf beteiligten Größen zu untersuchen. Die Modellergebnisse zeigen, daß die Evapotranspiration, Bewölkung und der Niederschlag von der Gittermaschenweite und der Heterogenität beeinflußt werden. Es zeigte sich, daß bei Verwendung gröberer Maschenweiten unter Einbezug der verschiedenen Landnutzungstypen innerhalb der Gittermasche die Obertlächenprozesse und Phänomene (z.B. Wärmeinseleffekt) realistischer beschrieben werden, als wenn nur ein Landnu

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20

Martinez, Agudelo John Alejandro. "On the Hydroclimate of Southern South America: Water Vapor Transport and the Role of Shallow Groundwater on Land-Atmosphere Interactions." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/595679.

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The present work focuses on the sources and transport of water vapor to the La Plata Basin (LPB), and the role of groundwater dynamics on the simulation of hydrometeorological conditions over the basin. In the first part of the study an extension to the Dynamic Recycling Model (DRM) is developed to estimate the water vapor transported to the LPB from different regions in South America and the nearby oceans, and the corresponding contribution to precipitation over the LPB. It is found that more than 23% of the precipitation over the LPB is from local origin, while nearly 20% originates from eva

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21

Evans, Jason Peter, and jason evans@yale edu. "Modelling Climate - Surface Hydrology Interactions in Data Sparse Areas." The Australian National University. Centre for Resource and Environmental Studies, 2000. http://thesis.anu.edu.au./public/adt-ANU20020313.032142.

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The interaction between climate and land-surface hydrology is extremely important in relation to long term water resource planning. This is especially so in the presence of global warming and massive land use change, issues which seem likely to have a disproportionate impact on developing countries. This thesis develops tools aimed at the study and prediction of climate effects on land-surface hydrology (in particular streamflow), which require a minimum amount of site specific data. This minimum data requirement allows studies to be performed in areas that are data sparse, such as t

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22

Tanaka, Kenji. "Development of the new land surface scheme SiBUC commonly applicable to basin water management and numerical weather prediction model." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/145376.

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Kyoto University (京都大学)<br>0048<br>新制・論文博士<br>博士(工学)<br>乙第11576号<br>論工博第3817号<br>新制||工||1329(附属図書館)<br>22875<br>UT51-2004-U473<br>京都大学大学院工学研究科環境地球工学専攻<br>(主査)教授池淵周一, 教授椎葉充晴, 教授中北英一<br>学位規則第4条第2項該当

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23

Kgomotso, Phemo Karen. "Global environmental agreements and local livelihoods : how the internationalisation of environmental resources shapes access to and control over wetland resources in the Okavango Delta, Botswana." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/38451/.

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This thesis examines how global environmental crisis narratives and discourses have influenced environmental policy and practice in conservation programmes for the Okavango Delta, Botswana. In particular, it highlights the contested nature of biodiversity conservation and the embedded power relations in the framing, definition and crafting of solutions to the problem of biodiversity degradation at local, national and international levels. The thesis therefore examines, based on these framings, the consequences of global environmental agreements, such as the Ramsar Convention and the UN Convent

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24

Moutahir, Hassane. "Likely effects of climate change on water resources and vegetation growth period in the province of Alicante, southeastern Spain." Doctoral thesis, Universidad de Alicante, 2016. http://hdl.handle.net/10045/70649.

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25

Gortan, Emmanuelle. "Misura dello stato idrico di fraxinus ornus L. quale biomonitor dell'aridità ambientale in siti diversi del carso triestino." Doctoral thesis, Università degli studi di Trieste, 2008. http://hdl.handle.net/10077/2658.

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2006/2007<br>L'aridità è una condizione ambientale che comporta una ridotta disponibilità d'acqua per le piante all'interno del suolo. La disponibilità d'acqua rappresenta, unitamente alla temperatura, il fattore ambientale che più di ogni altro condiziona la distribuzione e la produttività primaria della vegetazione. Poiché una prolungata aridità ambientale ha serie conseguenze sulla produttività degli ecosistemi forestali e sulla sopravvivenza di alcune specie vegetali meno competitive di altre in tali condizioni, è di fondamentale importanza quantificare il livello di aridità ambientale per

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Mölders, Nicole, Thomas Beckmann, and Armin Raabe. "A module to couple an atmospheric and a hydrologic model." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212867.

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A land-surface module to couple a meteorological and a hydrologic model is described. lt was implemented and tested in the Leipzig\'s version of GESIMA. Preliminary results of a coupling with NASMO are presented, although this article mainly focuses on the description of the module and its effect on the atmospheric water cycle. One positive impact of the module is that it allows to produce subgrid-scale evapotranspiration in more details and to heterogenize precipitation. This strongly affects soil wetness, cloudiness and the thermal regime of the atmospheric boundary layer<br>Ein Bodenmodul z

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Nagai, Haruyasu. "Development of a New Atmosphere-Soil-Vegetation Model to Study Heat, Water, and CO2 Exchanges between the Atmosphere and Land-surface." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/147889.

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28

Ma, Ning, Guo-Yue Niu, Youlong Xia, et al. "A Systematic Evaluation of Noah-MP in Simulating Land-Atmosphere Energy, Water, and Carbon Exchanges Over the Continental United States." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/626444.

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Accurate simulation of energy, water, and carbon fluxes exchanging between the land surface and the atmosphere is beneficial for improving terrestrial ecohydrological and climate predictions. We systematically assessed the Noah land surface model (LSM) with mutiparameterization options (Noah-MP) in simulating these fluxes and associated variations in terrestrial water storage (TWS) and snow cover fraction (SCF) against various reference products over 18 United States Geological Survey two-digital hydrological unit code regions of the continental United States (CONUS). In general, Noah-MP captu

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Brunke, Michael A., Patrick Broxton, Jon Pelletier, et al. "Implementing and Evaluating Variable Soil Thickness in the Community Land Model, Version 4.5 (CLM4.5)." AMER METEOROLOGICAL SOC, 2016. http://hdl.handle.net/10150/612995.

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One of the recognized weaknesses of land surface models as used in weather and climate models is the assumption of constant soil thickness because of the lack of global estimates of bedrock depth. Using a 30-arc-s global dataset for the thickness of relatively porous, unconsolidated sediments over bedrock, spatial variation in soil thickness is included here in version 4.5 of the Community Land Model (CLM4.5). The number of soil layers for each grid cell is determined from the average soil depth for each 0.9 degrees latitude x 1.25 degrees longitude grid cell. The greatest changes in the simul

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Ohta, Takeshi, Tetsuya Hiyama, Hiroki Tanaka, et al. "Seasonal variation in the energy and water exchanges above and below a larch forest in eastern Siberia." Wiley, 2001. http://hdl.handle.net/2237/7756.

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Törnqvist, Rebecka. "Basin-scale change in water availability and water quality under intensified irrigated agriculture." Doctoral thesis, Stockholms universitet, Institutionen för naturgeografi och kvartärgeologi (INK), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-93214.

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Changes in land use and water use can greatly impact the cycling of water and water-borne substances. Increased redistribution of river water to irrigated fields can cause enhanced evapotranspiration and decreased river discharge. Additionally, the water quality can be affected by the external input of fertilisers and pesticides, and by changed pollutant transport pathways in expansive irrigation canal systems. This thesis examines basin-scale changes in water use, river discharge, water quality and nitrogen (N) loading under conditions of intensified irrigated agriculture, using the Aral Sea

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Redfearn, Howard Daniel. "Rainfall-runoff changes due to urbanization: a comparison of different spatial resolutions for lumped surface water hydrology models using HEC-HMS." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4939/.

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Hydrologic models were used to examine the effects of land cover change on the flow regime of a watershed located in North-Central Texas. Additionally, the effect of spatial resolution was examined by conducting the simulations using sub-watersheds of different sizes to account for the watershed. Using the Army Corps of Engineers, Hydrologic Engineering Center Hydrologic Modeling System (HEC-HMS), two different modeling methods were evaluated at the different sub-watershed resolutions for four rainfall events. Calibration results indicate using the smaller spatial resolutions improves the mode

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Lemon, Michelle M. "The effects of land use and regional hydrology on surface water quality in the upper San Pedro River, Arizona, United States of America." Thesis, The University of Arizona, 2004. http://hdl.handle.net/10150/292075.

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The purpose of this study is to examine the effects of land use and hydrology on surface water quality in a semi-arid watershed. Six synoptic sampling events were performed along the upper San Pedro River, AZ, USA before, during, and after the 2002 monsoon season. Water samples were analyzed for conservative solutes, nutrients, and organic matter. During non-monsoon baseflow periods, conservative solutes indicated limited hydrologic connection between regions. Protected reaches had significantly higher DOC concentrations and agricultural reaches had significantly higher DON and NO₃-N levels. I

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GHIRARDINI, Andrea. "Main sources and emission pathways of micropollutants released in surface water at a catchment scale: from a theoretical approach to a practical application on a case-study." Doctoral thesis, Università degli studi di Ferrara, 2021. http://hdl.handle.net/11392/2488226.

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Due to the rising global population and the steady growth of the health care sector, the consumption of pharmaceuticals increased consistently in the last decades. Although modern medicine significantly developed, this brought to the possibility that residues of these compounds reach surface water, soil, and plants through several routes during their manufacture, use, and disposal. Considering a rural or peri-urban areas, pharmaceutical compounds may enter in the water environment via wastewater treatment plant efflluent, combined sewer overflow, and soil water flows originated from arable la

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Christoffersen, Bradley. "The Ecohydrological Mechanisms of Resilience and Vulnerability of Amazonian Tropical Forests to Water Stress." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/293566.

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Predicting the interactions between climate change and ecosystems remains a core problem in global change research; tropical forest ecosystems are of particular importance because of their disproportionate role in global carbon and water cycling. Amazonia is unique among tropical forest ecosystems, exhibiting a high degree of coupling with its regional hydrometeorology, such that the stability of the entire forest-climate system is dependent on the functioning of its component parts. Belowground ecohydrological interactions between soil moisture environments and the roots which permeate them

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Labadz, Martin. "A catchment modelling approach integrating surface and groundwater processes, land use and distribution of nutrients : Elimbah Creek, southeast Queensland." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/60017/1/Martin_Labadz_Thesis.pdf.

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As the world’s population is growing, so is the demand for agricultural products. However, natural nitrogen (N) fixation and phosphorus (P) availability cannot sustain the rising agricultural production, thus, the application of N and P fertilisers as additional nutrient sources is common. It is those anthropogenic activities that can contribute high amounts of organic and inorganic nutrients to both surface and groundwaters resulting in degradation of water quality and a possible reduction of aquatic life. In addition, runoff and sewage from urban and residential areas can contain high amount

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Milašaitė, Indrė. "Raseinių rajono nuotekų valyklų efektyvumo analizė." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20090114_160431-07549.

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Vandenų apsauga yra viena iš svarbiausių aplinkosaugos sričių. Europos Sąjungos direktyvos griežtai reglamentuoja išleidžiamų į paviršinius vandenis miestų nuotekų kokybę. Ne mažiau kaip 80 procentų išleidžiamų nuotekų neturi viršyti didžiausios leidžiamos koncentracijos. Darbo tikslas ištirti nuotekų valyklų Raseinių rajono savivaldybėje darbo efektyvumą ir numatyti priemones jų darbui pagerinti. Darbe analizuojama Raseinių rajono (Raseinių, Ariogalos, Kaulakių gyvenviečių) nuotekų valyklų darbo efektyvumas. Analizei naudoti 2005-2007 metais atliktų tyrimų duomenys. Duomenų analizė parodė, ka

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Fox, John Tyler. "Spatiotemporal Patterns and Drivers of Surface Water Quality and Landscape Change in a Semi-Arid, Southern African Savanna." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81462.

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The savannas of southern Africa are a highly variable and globally-important biome supporting rapidly-expanding human populations, along with one of the greatest concentrations of wildlife on the continent. Savannas occupy a fifth of the earth's land surface, yet despite their ecological and economic significance, understanding of the complex couplings and feedbacks that drive spatiotemporal patterns of change are lacking. In Chapter 1 of my dissertation, I discuss some of the different theoretical frameworks used to understand complex and dynamic changes in savanna structure and composition.

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Mölders, Nicole, Thomas Beckmann, and Armin Raabe. "A module to couple an atmospheric and a hydrologic model." Universität Leipzig, 1996. https://ul.qucosa.de/id/qucosa%3A15045.

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A land-surface module to couple a meteorological and a hydrologic model is described. lt was implemented and tested in the Leipzig\''s version of GESIMA. Preliminary results of a coupling with NASMO are presented, although this article mainly focuses on the description of the module and its effect on the atmospheric water cycle. One positive impact of the module is that it allows to produce subgrid-scale evapotranspiration in more details and to heterogenize precipitation. This strongly affects soil wetness, cloudiness and the thermal regime of the atmospheric boundary layer.<br>Ein Bodenmodul

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Persson, Tony. "Evaporation and Heat-flux Aggregation in Heterogeneous Boreal Landscapes." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4326.

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<p>The boreal forests represent 8 % of all forested areas on the earth and have a significant role in the control of greenhouse gases and an impact on global climate change. The main objective of this thesis is to increase the understanding of how evaporation and heat-flux processes in the boreal forest zone are affecting the regional and global climate.</p><p>A meteorological mesoscale model with an advanced land-surface parameterization has been utilized to study aggregation of fluxes of water vapour and heat. The model has been compared against four other methods for flux estimation in a so

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Amazirh, Abdelhakim. "Monitoring crops water needs at high spatio-temporal resolution by synergy of optical/thermal and radar observations." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30101.

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L'optimisation de la gestion de l'eau en agriculture est essentielle dans les zones semi-arides afin de préserver les ressources en eau qui sont déjà faibles et erratiques dues à des actions humaines et au changement climatique. Cette thèse vise à utiliser la synergie des observations de télédétection multispectrales (données radar, optiques et thermiques) pour un suivi à haute résolution spatio-temporelle des besoins en eau des cultures. Dans ce contexte, différentes approches utilisant divers capteurs (Landsat-7/8, Sentinel-1 et MODIS) ont été developpées pour apporter une information sur l'

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Santos, Leila Tha?se Santana de Oliveira. "An?lise da qualidade da ?gua superficial do Rio Suba?, Bahia e influ?ncia do uso e ocupa??o do solo em seu entorno." Universidade Estadual de Feira de Santana, 2013. http://localhost:8080/tede/handle/tede/172.

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Submitted by Verena Bastos (verena@uefs.br) on 2015-08-05T22:27:36Z No. of bitstreams: 1 Dissertacao_FINAL.pdf: 10730676 bytes, checksum: 8d2235818b9b2636a1d0590bbb36fe1a (MD5)<br>Made available in DSpace on 2015-08-05T22:27:36Z (GMT). No. of bitstreams: 1 Dissertacao_FINAL.pdf: 10730676 bytes, checksum: 8d2235818b9b2636a1d0590bbb36fe1a (MD5) Previous issue date: 2013-03-15<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES<br>The Suba? river basin (BRS), whose source is located in Feira de Santana-BA and its mouth in the Bay of All Saints, poses serious environmental imp

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Matheny, Ashley Michelle. "Development of a Novel Plant-Hydrodynamic Approach for Modeling of Forest Transpiration during Drought and Disturbance." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468595149.

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Muche, Muluken Eyayu. "Surface water hydrologic modeling using remote sensing data for natural and disturbed lands." Diss., Kansas State University, 2016. http://hdl.handle.net/2097/32609.

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Doctor of Philosophy<br>Department of Biological & Agricultural Engineering<br>Stacy L. Hutchinson<br>The Soil Conservation Service-Curve Number (SCS-CN) method is widely used to estimate direct runoff from rainfall events; however, the method does not account for the dynamic rainfall-runoff relationship. This study used back-calculated curve numbers (CNs) and Normalized Difference Vegetation Index (NDVI) to develop NDVI-based CNs (CN[subscript]NDV) using four small northeastern Kansas grassland watersheds with average areas of 1 km² and twelve years (2001–2012) of daily precipitation and runo

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孝鎮, 金. "Effects of surface modification and water absorption on the mechanical properties of bamboo fiber reinforced composites." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB10304675/?lang=0, 2009. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB10304675/?lang=0.

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Pollock, Matthew John. "Geomorphic Differences between Unmined and Surface Mined Lands in Southeastern Ohio." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429613137.

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Blackburn-Lynch, Whitney Cole. "DEVELOPMENT OF TECHNIQUES FOR ASSESSING AND RESTORING STREAMS ON SURFACE MINED LANDS." UKnowledge, 2015. http://uknowledge.uky.edu/bae_etds/37.

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Surface mining is a commonly used method for extracting coal in the Appalachian Coalfields of the U.S. This mining practice produces excess spoil or overburden, which is often placed in adjacent valleys resulting in the creation of valley fills. These valley fills bury headwater streams, which in turn can negatively impact downstream ecosystems. In 2008, the University of Kentucky designed and constructed 1,020 m of ephemeral, intermittent and headwater streams on an existing valley fill (Guy Cove) as a proof-of-concept. The goal of the project was to evaluate whether or not a stream recreatio

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Ross, James Donald. "Influence of climate and land use on nutrient and bacterial dynamics in surface waters of the Lower Fraser Valley, British Columbia." Thesis, University of British Columbia, 2006. http://hdl.handle.net/2429/31057.

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It is understood that intensive agricultural activities can adversely impact surface-water quality resulting in risks to ecosystem and human health. What is less clear are the links between agricultural land use (type and intensity), environmental conditions and surface-water quality at varying spatial and temporal scales. There are also challenges with detecting agricultural influence on surface waters in a timely and accurate manner. This is of concern in the Lower Fraser Valley as this region has experienced significant agricultural intensification and population growth in recent years

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Watson, Eliza. "Surface Water Chemistry in White Oak Creek, North-East Texas: Effect of Land Use." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10687.

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Over the last few decades increasing attention has been paid to the effects of land use activities and land management on stream water quality. Recent research has largely focused on dominant land uses such as urban development and agricultural cropland. The relative effect of land use activities and management on stream chemistry in sub-tropical rangeland ecosystems, where much of the land use is converted to pasture and agriculture is largely unknown. This study examined stream water quality and land use in a sub-tropical watershed in Northeast Texas largely dominated by rangeland. The

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Lopez, Valencia Oliver Miguel. "Monitoring arid-land groundwater abstraction through optimization of a land surface model with remote sensing-based evaporation." Diss., 2018. http://hdl.handle.net/10754/627141.

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The increase in irrigated agriculture in Saudi Arabia is having a large impact on its limited groundwater resources. While large-scale water storage changes can be estimated using satellite data, monitoring groundwater abstraction rates is largely non-existent at either farm or regional level, so water management decisions remain ill-informed. Although determining water use from space at high spatiotemporal resolutions remains challenging, a number of approaches have shown promise, particularly in the retrieval of crop water use via evaporation. Apart from satellite-based estimates, land surfa

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