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 26 for “"Asian monsoon"”.
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SURFACE AND AEROSOL EFFECTS ON THE SOUTH ASIAN MONSOON HYDROCLIMATE
… work targets important couplings in the South Asian monsoon system at interannual or longer time-scales and associated processes and mechanisms: aerosol-hydroclimate, atmosphere-ocean, and land-atmosphere. Anomalous springtime absorbing aerosols loading over the Indo-Gangetic Plain (IGP) leads …
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On the structure and dynamics of the Asian monsoon anticyclone
The Asian summer monsoon circulation has been the subject of continuous research for several decades. Much emphasis has been given to the lower level cyclone, but while various models and mechanisms have been proposed to explain certain features of the upper level anticyclone, like the zonal scale …
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Evaluating the trend and impact factors of Southeast Asian monsoon
… global leading agricultural producer, Southeast Asian (SEA) economy and livelihood rely on water supply from the monsoon precipitation during the rainy season. However, SEA monsoon system is still understudied. Here, we focus on the Mainland SEA monsoon because of its geographical simplicity. We …
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Eddy shedding from non-axisymmetric, divergent anticyclones with application to the Asian Monsoon anticyclone
The Asian summer Monsoon circulation is driven by differential thermal heating, primarily associated with the localized latent heat release from enhanced precipitation over the India sub-continent. Although this heating is of limited zonal extent, it drives a time-averaged, upper level anticylone …
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East African climate variability on different time scales : the Suguta Valley in the African-Asian Monsoon Domain
… of the West-African (WAM) and Indian Summer monsoons (ISM) during the AHP, especially their exact influence on regional climate relative to each other, is currently intensely debated. Here, I present a high-resolution multiproxy lake-level record spanning the AHP from the remote Suguta Valley …
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Reconstruction of the East Asian monsoon variability since the mid-Holocene from the Pearl River estuary, southern China
… aim of this thesis is to reconstruct East Asian Monsoon (EAM) variability during the mid-Holocene, developing a relatively new proxy of bulk organic carbon isotopic signature (δ13C). C/N ratios and trace elements are also employed to conduct a multi-proxy case study from the Pearl River …
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Reconstructing atmospheric changes in monsoon regions using eolian dust
… in regions of dust transport also affected by monsoons to examine how different climate forcing mechanisms impact the monsoon regions over glacial-interglacial, orbital, and millennial timescales. This thesis generates new eolian dust records from two monsoon regions to reconstruct changes in …
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Reconstructing atmospheric changes in Monsoon regions using eolian dust
… in regions of dust transport also affected by monsoons to examine how different climate forcing mechanisms impact the monsoon regions over glacialinterglacial, orbital, and millennial timescales. This thesis generates new eolian dust records from two monsoon regions to reconstruct changes in …
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Simple Models for Complex Tropical Dynamics
… Convergence Zone (ITCZ), the South Asian monsoon, Pacific and ENSO seasonality, the Walker Circulation, and the modeling of the tropical energy budget. We begin with an examination of tropical SSTs and the ITCZ under warming, finding that the Hadley cells weaken and tropical SST …
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Preparation for CWRF downscaling climate prediction over Pakistan: development of iCWPS surface processing and analysis of regional precipitation teleconnection
… by distinct summer and winter south Asian monsoon systems. As Pakistan locates at the transit zone from central to southern Asia, its climate variability is subject to planetary circulation forcings and regional interactions with complex surface characteristics. As such, credible …
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Enhanced vertical mixing within mesoscale eddies due to high frequency winds in the south China sea
… a complex circulation influenced by the East Asian Monsoon, river discharge and intricate bathymetry. As a result, both the mesoscale eddy field and the near-inertial energy distribution display large spatial variability and they strongly influence the oceanic transport and mixing. With an …
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Wind-evaporation feedback, angular momentum conservation, and the abrupt onset of monsoons
… mechanisms responsible for the abrupt onset of monsoon circulations, focusing on the role played by wind-evaporation feedback and its interaction with angular momentum conserving flow. The first half of the thesis examines the effect of wind induced surface heat exchange (WISHE) on nonlinear, …
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Zonally symmetric monsoon dynamics in a general circulation model
… setup to study steady zonally averaged monsoon circulations. Two dimensional model runs are made with a zonally symmetric continent north of 15N and a slab ocean of uniform sea surface temperature to study the applicability of axisymmetric theory. Forcing to drive the monsoon is applied …
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The contemporary distribution of benthic foraminifera in the Pearl River estuary, southeast China, and their use in reconstructing mid‐ to late‐Holocene fluvial flux
… 2008). Millennial‐scale variability in the East Asian monsoon, linked to precession and obliquity cycles of solar insolation, is the hypothesised cause of these trends. A number of abrupt low discharge events, postulated to reflect northern hemisphere teleconnections, punctuate the Pearl River …
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Tropospheric Ozone over the Middle East and Its Interannual Variability: An Integrated Analysis with Satellite Observations and a Global Chemical Transport Model
… the buildup of ozone. Additionally, the South Asian High in the upper troposphere helps transport ozone from the Asian monsoon region. Transport from Asia and local production are predominantly responsible for the ozone buildup, each contributing 30-35% to the ozone abundance in the region. …
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Pollen and grain size records in abyssal sediments of the northwest Pacific Ocean as proxies of Plio-Pleistocene climate change /
… abyssal marine sediments. Aridification of the Asian interior due to the phased uplift of the Himalayan-Tibetan Plateau created the modem East Asian Monsoon system dominated by a strengthening of the winter monsoon. The winter monsoon is further enhanced during glacials due to the expansion of …
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Holocene playas as sedimentary evidence for recent climate change in the presently hyperarid western desert, Egypt
… 8100-6000 BP is linked to the intensified Afro-Asian monsoon forced by cyclical astronomical variations. The record from the Arba'in Desert of Egypt and northern Sudan lags the Northern Hemisphere seasonal insolation maximum (centered at 10,400 BP) and the greatest frequency of African lake …
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Dating and Interpretation of Secondary Carbonate Deposits from the Last Interglacial
… moved further to the North, so that the South Asian Monsoon could reach large parts of the Arabian Peninsula. The main growth phase lasted from 130 to 124 kyr, which coincides with the period of high summer insolation, suggesting, that solar insolation has a major impact on monsoonal strength. …
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Hydrodynamic processes and their impacts on the mud deposit in the Southern Yellow Sea, China
… where strong winter storms, mainly caused by Asian Monsoon, combined with strong current circulation can transport a large quantity of fine sediments from Old Huanghe Delta to the central SYS in winter. The existence of Yellow Sea Cold Water Mass circulation caused by density difference at SYS …
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