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 70 for “"Hydrological cycle"”.
-
Means and variability of some aspects of the hydrological cycle
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
-
Diagnosis of the atmospheric hydrological cycle and its variability in the present-day climate
… aspects of the atmospheric branch of the hydrological cycle in the modern day climate from an observational perspective. Data quality is evaluated, focusing on two state-of-the-art reanalysis products, ERA-I and JRA-55. Regional-scale discrepancies among reanalyses and observations, …
-
Bryophytes in the hydrological cycle and climate change implications : A case study of La Réunion cloud forest
… this water forms a vital part of the hydrological cycle of their surrounding ecosystems. To investigate the role of bryophytes in the hydrological cycle, our study, conducted in the biodiversity hotspot of the tropical montane cloud forest of La Réunion, focused on two leafy liverwort …
-
Spatial and temporal variation in precipitation pattern
The intensification of hydrological cycle and its nature is an important question in hydrology. The human activities are a major cause of change in hydrological cycle. The fluctuations in hydrological cycle can influence the dynamics of ecosystem. The changes in global water cycle and the …
-
A Lagrangian moisture source attribution model and analysis of southern Africa
… climate system and particularly in the regional hydrological cycle. Existing moisture transport and source methodologies have a number of limitations.
-
Simulating and quantifying land-surface biogeochemical, hydrological, and biogeophysical processes using the Community Land Model version 4
Carbon and nitrogen cycles, the energy cycle, and the hydrological cycle interact with each other; all are crucial to atmosphere–land studies. Carbon and nitrogen cycle from the atmosphere to vegetation communities and soil micro-organisms through their transformation in inorganic and organic …
-
A water flow algorithm for optimization problems
… The algorithm is designed by simulating the hydrological cycle in meteorology and the erosion phenomenon in nature. Basic operators of this algorithm are based on the raindrop distribution simulation, the property of water flow always moving to lower positions, and the erosion process to …
-
Análise e superação de algumas dificuldades na calibração automática do modelo SMAP-II - versão suavizada
… occur in a basin during the land phase of the hydrological cycle. To represent and link the physical processes, mathematical functions are used in which formulation there are parameters estimated by manual or automatic calibration. The calibration is one of the most difficult and arduous phases …
-
Water Transport in the Vadose Zone and Hydrological Processes in Soil-Plant-Atmosphere Continuum (SPAC) in West Texas, USA
… which plays an important role in the terrestrial hydrological cycle. Although numerous studies have been conducted, the comprehensive understanding of the soil-plant-atmosphere continuum (SPAC) is still limited. In this study, water transport within the SPAC under a semi-arid climate, including …
-
Energy and Moisture Transport in the Earth Climate System: Mean State and the Perturbation Response
… which track the movement of water in the aerial hydrological cycle from evaporation to precipitation, are used to analyze the sources and transport of precipitable water in the climate system. The precipitation over a tagged region is subdivided into contributions from local evaporation and …
-
Beam scanning offset Cassegrain reflector antennas by subreflector movement
… and to determine if, and to what extent, the hydrological cycle of Earth is being affected by human activity. One of the systems required for the mission was a wide scanning, high gain reflector antenna system for use in radiometric remote sensing from geostationary orbit. This work describes …
-
Air-breathing and movement ecology of Arapaima sp. in the Amazon
The annual hydrological cycle of floodplains supports fishes that are uniquely adapted to optimize resources throughout the year. Such adaptations to changing environments include air-breathing for seasonally hypoxic waters and directed movements to best utilize habitats as they become available. …
-
Application of Hydrogen and Oxygen Isotope Ratios of Water to the Study of Evaporation, Palaeoclimate, and Ancient Marine Conditions
… are critical to aid our understanding of the hydrological cycle on the modern and ancient Earth. As such, this thesis presents advancements in techniques and in the understanding of the isotopic behaviour of water that undergoes evaporation in different conditions. An application of these …
-
Quantification of Airborne Fungal Spores Comparing Molecular Tracers via Ion Chromatography and UV-LIF Methods
… in some cases. This has implications on the hydrological cycle on local and regional scales by impacting the formation and evolution of clouds and precipitation. The quantification of fungal spores has been limited in the past due to methods that were costly and that suffered from poor time …
-
Mineralogy, Chemistry & Flux of Suspended Sediments in Himalayan Rivers
… suspended sediment compositions vary within the hydrological cycle and between successive years. Initial sampling commenced to quantify the impact of the 2015 Gorka earthquake. The April 2015, Mw 7.8 mainshock occured ~80 km west of the Kosi basin and the May Mw 7.3 aftershock within the basin. …
-
Modeling the impact of atmospheric moisture transport on global ice volume
… An improved representation of the atmospheric hydrological cycle is included, and accumulation is related to the meridional flux of moisture by large scale baroclinic eddies. The ice sheets in the Northern Hemisphere respond to both precession and obliquity frequencies when the model is forced …
-
Impact assessment of hydroclimatic change on water stress in the Indus Basin
… of the cropping calendar to the natural hydrological cycle.
-
Cosmic-ray neutron sensing and its applications to soil and land surface hydrology
… these days. Monitoring and modeling of the hydrological cycle are a prerequisite to understand and predict the consequences for weather and agriculture. As soil water storage plays a key role for partitioning of water fluxes between the atmosphere, biosphere, and lithosphere, measurement …
-
Tholins: A Gas Phase Computational Study of Methanimine and Related Species
… than Earth’s that is dense enough to produce a hydrological cycle (or methanological cycle, in the case of Titan). Scientists in the fields of astrobiology and astrochemistry believe that Titan’s current atmospheric conditions could resemble that of the primordial Earth, and as such is being …
-
Solubility and spectroscopy of unsaturated hydrocarbons in cryogenic solvents.
… Titan's surface and atmosphere have an active hydrological cycle alike, with condensed hydrocarbons instead. Although identification of chemical species is hard, many organic molecules have been detected in the atmosphere, and in icy form on the surface. Spectroscopic properties and solubility …
Page 1 of 4