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 37 for “"ITCZ"”.
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Coupling of the intertropical convergence zone and the Hadley cells to the ocean's circulation
… known as the intertropical convergence zone, or ITCZ. This thesis explores several aspects of the coupling of the ocean's heat transport to the ITCZ and atmospheric circulation. First, I study connections between Atlantic Ocean heat transport variability and the position of the ITCZ in the 20th …
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Observational Studies of Wave Disturbances in the Tropical Pacific and Their Relationship With Deep Cloud Activity (Global Atmospheric Research Program(garp), Fgge, Gate, Itcz, Spcz, Sst)
First GARP (Global Atmospheric Research Program) Global Experiment, Level III-b data and the outgoing longwave radiation data are used to investigate relationships between deep cloud activity and large-scale meteorological fields from May to September in 1979. Discussion is focused on the …
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Dependence of tropical precipitation on changes in cross-equatorial atmosphere and ocean heat transport in global warming simulations
The Intertropical Convergence Zone (ITCZ) is an area of convection encircling the earth near the equator where the northern and southern hemisphere (SH) Hadley cells converge. If a forcing (e.g. aerosol emissions decline) results in a greater net influx of heat into one hemisphere the Hadley cells …
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Tropical climate variability from the last glacial maximum to the present
… position of the Intertropical Convergence Zone (ITCZ) in the Atlantic basin, which affects sea surface temperature (SST) and precipitation patterns throughout the tropical Atlantic. The second is the strength of the Indian Monsoon, an important component of both tropical and global climate. …
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Simple Models for Complex Tropical Dynamics
… the Inter-Tropical 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 …
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Tropical climate variability from the last glacial maximum to the present
… position of the Intertropical Convergence Zone (ITCZ) in the Atlantic basin, which affects sea surface temperature (SST) and precipitation patterns throughout the tropical Atlantic. The second is the strength of the Indian Monsoon, an important component of both tropical and global climate. …
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The centennial and millennial variability of the IndoPacific Warm Pool and the Indonesian Throughflow
… position of the Intertropical Convergence Zone (ITCZ) was approximately the same as modern at the last glacial maximum and was displaced to the south during the Younger Dryas and Heinrich Stadial 1, suggesting the ITCZ responds to changes in the interhemispheric temperature gradient.
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A Study of the Eastern Atlantic Intertropical Convergence Zone: Composite Structure and Initiation of Organized Convection
… structure of the Intertropical Convergence Zone (ITCZ) in the Eastern Atlantic. The composite was based upon the location of the surface confluence line. Separate composites were made for disturbed and suppressed cases in each of the three data collection phases.
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Interannual variability of the Atlantic Hadley circulation in boreal summer and its impacts on tropical cyclone activity
… is associated with the intensity change of the ITCZ. M1 is significantly correlated to multiple climate factors and has strong impacts on the Atlantic tropical cyclone (TC) activity. In the positive (negative) phase of M1, the ITCZ is stronger (weaker) than normal, and more (less) TCs form over …
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Seasonal Variability of Heat and Mass Transport Process in the Upper Tropical Atlantic Ocean: A Numerical Model Study
… movement of the Inter-Tropical Convergence Zone (ITCZ). The model ocean was forced by seasonally varying climatological wind and heat flux fields. The entrainment at the base of the mixed layer was scaled by wind stress and shear at the bottom of the mixed layer. On an annual average, the …
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Tracing hydrological millennial-scale cycles in the late Quaternary of the Cariaco Basin and the southern Gulf of Cádiz using coccoliths and dinoflagellate cysts
… respectively the intertropical convergence zone (ITCZ) and the North Atlantic Oscillation (NAO). Results of the micropalaeontological analysis indicate that the changes in the dominance of river influx or upwelling cause important variations in plankton productivity in both locations. These …
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On the mechanism of the large-scale seasonally varying upwelling in the region of the tropical tropopause
… elements: a circulation related to the oceanic ITCZ and a circulation related to the diabatic heating in the continental monsoons.The experiments with the model are designed to elucidate two aspects of the climatological-mean annual march. The first aspect concerns the annual cycle in the …
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Intra-seasonal convection dynamics over Southwest and Northeast Tanzania : an observational study
… with mid-latitude troughs and linked to the ITCZ. Composite of kinematic and thermodynamic parameters associated with deep conJection and precursors are composited.
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East African monsoon variability since the last glacial
… of the Inter-Tropical Convergence Zone (ITCZ) and by the El Niño Southern Oscillation (ENSO) with more rain and floods during El Niño and severe droughts during La Niña. The forecasting of East African rainfall in a warming world requires a better understanding of the response of …
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Massenspektrometrische Th/U-Datierung von Höhlensintern aus dem Oman: Klimaarchive des asiatischen Monsuns
… und der Innertropischen Konvergenz-Zone (ITCZ) auftraten. Die Th/U-Datierungen der Wachstumsintervalle der Höhlensinter zeigen, dass die Niederschlagsphasen während der Maxima der Interglaziale MIS 9, 7, 5 und 1 stattfanden. In einer hochaufgelösten Studie von 9.600 bis 6.100 Jahren vor …
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Palaeoenvironmental and palaeogeographic reconstruction of the Tequixquiac Basin, Central Eastern Mexico: Mid to late Pleistocene environments
… time-scales, changes in the mean position of the ITCZ related to SST, latitudinal gradients, atmospheric surface pressure gradients, the extent of Northern Hemisphere land and sea ice cover, and oceanic circulation patterns. Fluctuations in the TOC content of sediments are thought to be related to …
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The analysis of tropical temperate trough-associated rainfall onsets and their influence on maize yields in the Maize Triangle, South Africa
… when the Intertropical Convergence Zone (ITCZ) is at its lowest latitude, and they retreat mid-season while the significantly disappear during the latter part of the season. The study found that almost all rainfall onsets were associated with TTTs, implying the importance of TTTs, …
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Heat Storage and Transport Processes in the Tropical Atlantic Ocean
… shifted (from climatological July locations) ITCZ and continental heat source locations, the resultant upwelling rates are compared.</p> <p>The annual cycle of the northward heat transport from the equatorial basin is calculated from the divergence of lateral heat transport (obtained from …
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As chuvas na cidade de João Pessoa: uma abordagem genética.
… for the pre-rainy season weather system is the ITCZ, this is responsible for most of the total rainfall in this period. In the rainy season, the system increased participation is the easterly waves, thus being responsible for the total rainfall in this period. Finally, in the dry season, the …
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Late Mississippian (Chesterian) high-frequency climate change in the Pennington Formation at Pound Gap, KY USA.
… of the paleo-Intertropical Convergence Zone (ITCZ).
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