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 18 of 18 for “"Eastern Tropical Pacific"”.
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Natural variability in eastern tropical Pacific nitrous oxide emissions
… from the oxygen minimum zones (OMZs) in the eastern tropical Pacific and Arabian Sea that are not accounted for in assessments. Measurements of atmospheric concentrations from a selection of AGAGE stations around the Pacific Ocean were combined with back-trajectories calculated using the …
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Eastern Tropical Pacific Climate And El Niño Variability During The Past Millennium
… paleoclimate records from the dynamically vital eastern equatorial Pacific Ocean (EEP) spanning the past millennium are sparse. This has limited our understanding of tropical Pacific dynamics, leaving questions regarding the source of ENSO variability unanswered. Here I seek to address some of …
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Air-sea interaction at contrasting sites in the eastern tropical Pacific : mesoscale variability and atmospheric convection at 10°N
… at two contrasting sites on 125°W in the eastern tropical Pacific Ocean using data from the Pan American Climate Study (PACS) field program. Analysis based on the PACS data set and satellite observations of sea surface temperature (SST) reveals marked differences in the role of ocean …
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Air-sea interaction at contrasting sites in the Eastern Tropical Pacific : mesoscale variability and atmospheric convection at 10°N
… at two contrasting sites on 125°W in the eastern tropical Pacific Ocean using data from the Pan American Climate Study (PACS) field program. Analysis based on the PACS data set and satellite observations of sea surface temperature (SST) reveals marked differences in the role of ocean …
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Constraining Respired Carbon Storage in the Eastern Tropical Pacific Over the Last 25 Thousand Years Using Benthic Foraminiferal Boron/Calcium Ratios
<p>The storage of inorganic carbon in the deep Pacific Ocean is thought to play an important role in regulating both glacial-interglacial and millennial-scale atmospheric CO<sub>2</sub> concentrations (Broecker and Barker 2007; Sigman et al., 2010). A recent study by Loveley et al. (2017) showed …
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Reconstructing Tropical Pacific Climate Variability from Coral Archives
The tropical Pacific Ocean is a critical component of the climate system, and its mean state and variability are linked to effects across the globe. Our understanding of the area is limited by the scarcity of direct observations of important climatic variables prior to the mid-twentieth century, …
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Evolution and Ecology of Flyingfishes (Teleostei:Exocoetidae)
… epipelagic marine species distributed throughout tropical and subtropical surface waters. They form a key mid-trophic link between zooplankton and predators, and have evolved special adaptations to survive in the open ocean. However, little is known about their basic evolutionary history and …
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The influence of volcanic stratospheric aerosols on interannual global climate variations
… in sea surface temperatures (SST) in the eastern tropical Pacific Ocean. The observational evidence for an association between the record of volcanic eruptions and SST and the Southern Oscillation Index (SOI, Tahiti SLP minus Darwin SLP) over the last 120 years is examined using superposed …
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The Impact of a Warmer Climate on Atmospheric Circulation with Implications for the Asian Summer Monsoon
Warming of both the high latitudes and tropical sea surface temperatures are present in modern observations and projected under future climate change scenarios. These conditions were also present in the Warm Pliocene (3.3 - 3.0 million years ago), a paleoclimatic interval that bares resemblance to …
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Marine iodine biogeochemistry: inorganic speciation, redox dynamics and organic complexation
… in the oligotrophic waters of the North Pacific and the oxygen minimum zones of the Eastern Tropical Pacific. The observed distributions reflect the impact of both in situ and ex situ processes on dissolved iodine concentrations, offering valuable insights into the prevalence and extent …
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The marine biogeochemistry of molybdenum
… However, dissolved Mo profiles from the Eastern Tropical Pacific showed both depletion and enrichment of dissolved Mo possibly associated with interaction of Mo with coastal sediments. Dissolved Mo profiles in several California Borderland Basins showed 1-2 nM Mo depletions below sill …
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Marine Invasive Species in the Galapagos Marine Reserve
… given a unique confluence of currents in the Eastern Tropical Pacific (ETP). They sustain a high incidence of endemic species, which are regularly subjected to extreme climate variability through El Niño–Southern Oscillation (ENSO) events. This research examines the negative impacts that …
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thesis in the field of Chemical Oceanography: Marine iodine biogeochemistry: inorganic speciation, redox dynamics and organic complexation
… in the oligotrophic waters of the North Pacific and the oxygen minimum zones of the Eastern Tropical Pacific. The observed distributions reflect the impact of both in situ and ex situ processes on dissolved iodine concentrations, offering valuable insights into the prevalence and extent …
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Spatiotemporal Distribution of Siberian Wildfires and Impacts from Meteorological and Climatic Factors
… three subregions, namely Western Siberia (WS), Eastern Siberia (ES), and the Far East (FE). Among them, WS (West Siberia) exhibits active spring wildfires, primarily concentrated in April–May. The rapid drying of herbaceous vegetation following early snowmelt provides favorable conditions for …
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Ocean biogeochemistry in the northern Gulf of Mexico, the East/Japan Sea, and the South Pacific with a focus on denitrification
… (GOM), the East/Japan Sea (EJS), and the South Pacific: from coastal to marginal to open ocean scale in different oceanographic conditions. Denitrification rates in the bottom layer (including bottom waters+sediments) at the shallow and often hypoxic northern GOM ranged from 103-544 [mu]mol N …
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LATE MIOCENE AND PLIOCENE PALEOCEANOGRAPHY OF THE LOW LATITUDE NORTHERN HEMISPHERE AND ITS IMPLICATIONS FOR FUTURE CLIMATE CHANGE
… ice sheets. While geographical distal, the tropical ocean has played a significant role in shaping the evolution of the climate system, as the opening and closing of low latitude (LL) ocean gateways and reorganization of oceanic and atmospheric circulation structure have helped shape the …