Добірка наукової літератури з теми "Atmospheric circulation Africa Mathematical models"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Atmospheric circulation Africa Mathematical models".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Статті в журналах з теми "Atmospheric circulation Africa Mathematical models"
Su, Zhen, Henning Meyerhenke, and Jürgen Kurths. "The climatic interdependence of extreme-rainfall events around the globe." Chaos: An Interdisciplinary Journal of Nonlinear Science 32, no. 4 (April 2022): 043126. http://dx.doi.org/10.1063/5.0077106.
Повний текст джерелаBetts, Richard A., Lorenzo Alfieri, Catherine Bradshaw, John Caesar, Luc Feyen, Pierre Friedlingstein, Laila Gohar, et al. "Changes in climate extremes, fresh water availability and vulnerability to food insecurity projected at 1.5°C and 2°C global warming with a higher-resolution global climate model." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376, no. 2119 (April 2, 2018): 20160452. http://dx.doi.org/10.1098/rsta.2016.0452.
Повний текст джерелаLyon, Bradfield, and Simon J. Mason. "The 1997/98 Summer Rainfall Season in Southern Africa. Part II: Model Simulations and Coupled Model Forecasts." Journal of Climate 22, no. 13 (July 1, 2009): 3802–18. http://dx.doi.org/10.1175/2009jcli2600.1.
Повний текст джерелаEngelbrecht, F. A. "Perspektief vir genestelde klimaatmodellering oor suidelike Afrika." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 19, no. 2 (July 15, 2000): 47–51. http://dx.doi.org/10.4102/satnt.v19i2.744.
Повний текст джерелаMunday, C., and R. Washington. "Systematic Climate Model Rainfall Biases over Southern Africa: Links to Moisture Circulation and Topography." Journal of Climate 31, no. 18 (September 2018): 7533–48. http://dx.doi.org/10.1175/jcli-d-18-0008.1.
Повний текст джерелаShongwe, Mxolisi E., Geert Jan van Oldenborgh, Bart van den Hurk, and Maarten van Aalst. "Projected Changes in Mean and Extreme Precipitation in Africa under Global Warming. Part II: East Africa." Journal of Climate 24, no. 14 (July 15, 2011): 3718–33. http://dx.doi.org/10.1175/2010jcli2883.1.
Повний текст джерелаAssamnew, Abera Debebe, and Gizaw Mengistu Tsidu. "The performance of regional climate models driven by various general circulation models in reproducing observed rainfall over East Africa." Theoretical and Applied Climatology 142, no. 3-4 (September 7, 2020): 1169–89. http://dx.doi.org/10.1007/s00704-020-03357-3.
Повний текст джерелаAllan, Richard P., Margaret J. Woodage, Sean F. Milton, Malcolm E. Brooks, and James M. Haywood. "Examination of long-wave radiative bias in general circulation models over North Africa during May-July." Quarterly Journal of the Royal Meteorological Society 137, no. 658 (December 7, 2010): 1179–92. http://dx.doi.org/10.1002/qj.717.
Повний текст джерелаLyon, Bradfield, and Simon J. Mason. "The 1997–98 Summer Rainfall Season in Southern Africa. Part I: Observations." Journal of Climate 20, no. 20 (October 15, 2007): 5134–48. http://dx.doi.org/10.1175/jcli4225.1.
Повний текст джерелаKalognomou, Evangelia-Anna, Christopher Lennard, Mxolisi Shongwe, Izidine Pinto, Alice Favre, Michael Kent, Bruce Hewitson, et al. "A Diagnostic Evaluation of Precipitation in CORDEX Models over Southern Africa." Journal of Climate 26, no. 23 (December 2013): 9477–506. http://dx.doi.org/10.1175/jcli-d-12-00703.1.
Повний текст джерелаДисертації з теми "Atmospheric circulation Africa Mathematical models"
Shongwe, Mxolisi Excellent. "Performance of recalibration systems of general circulation model forecasts over southern Africa." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-07032007-102650.
Повний текст джерелаDionne, Pierre 1962. "Numerical simulation of blocking by the resonance of topographically forced waves." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65542.
Повний текст джерелаJia, XiaoJing 1977. "The mechanisms and the predictability of the Arctic oscillation and the North Atlantic oscillation /." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103026.
Повний текст джерелаHang, Jian, and 杭建. "Wind conditions and urban ventilation in idealized city models." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841471.
Повний текст джерелаKaspi, Yohai. "Turbulent convection in the anelastic rotating sphere : a model for the circulation on the giant planets." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45780.
Повний текст джерелаIncludes bibliographical references (p. 207-221).
This thesis studies the dynamics of a rotating compressible gas sphere, driven by internal convection, as a model for the dynamics on the giant planets. We develop a new general circulation model for the Jovian atmosphere, based on the MITgcm dynamical core augmenting the nonhydrostatic model. The grid extends deep into the planet's interior allowing the model to compute the dynamics of a whole sphere of gas rather than a spherical shell (including the strong variations in gravity and the equation of state). Different from most previous 3D convection models, this model is anelastic rather than Boussinesq and thereby incorporates the full density variation of the planet. We show that the density gradients caused by convection drive the system away from an isentropic and therefore barotropic state as previously assumed, leading to significant baroclinic shear. This shear is concentrated mainly in the upper levels and associated with baroclinic compressibility effects. The interior flow organizes in large cyclonically rotating columnar eddies parallel to the rotation axis, which drive upgradient angular momentum eddy fluxes, generating the observed equatorial superrotation. Heat fluxes align with the axis of rotation, contributing to the observed flat meridional emission. We show the transition from weak convection cases with symmetric spiraling columnar modes similar to those found in previous analytic linear theory, to more turbulent cases which exhibit similar, though less regular and solely cyclonic, convection columns which manifest on the surface in the form of waves embedded within the superrotation. We develop a mechanical understanding of this system and scaling laws by studying simpler configurations and the dependence on physical properties such as the rotation period, bottom boundary location and forcing structure. These columnar cyclonic structures propagate eastward, driven by dynamics similar to that of a Rossby wave except that the restoring planetary vorticity gradient is in the opposite direction, due to the spherical geometry in the interior.
(cont.) We further study these interior dynamics using a simplified barotropic annulus model, which shows that the planetary vorticity radial variation causes the eddy angular momentum flux divergence, which drives the superrotating equatorial flow. In addition we study the interaction of the interior dynamics with a stable exterior weather layer, using a quasigeostrophic two layer channel model on a beta plane, where the columnar interior is therefore represented by a negative beta effect. We find that baroclinic instability of even a weak shear can drive strong, stable multiple zonal jets. For this model we find an analytic nonlinear solution, truncated to one growing mode, that exhibits a multiple jet meridional structure, driven by the nonlinear interaction between the eddies. Finally, given the density field from our 3D convection model we derive the high order gravitational spectra of Jupiter, which is a measurable quantity for the upcoming JUNO mission to Jupiter.
by Yohai Kaspi.
Ph.D.
Zhai, Ping Ph D. Massachusetts Institute of Technology. "Buoyancy-driven circulation in the Red Sea." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/95561.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 175-180).
This thesis explores the buoyancy-driven circulation in the Red Sea, using a combination of observations, as well as numerical modeling and analytical method. The first part of the thesis investigates the formation mechanism and spreading of Red Sea Overflow Water (RSOW) in the Red Sea. The preconditions required for open-ocean convection, which is suggested to be the formation mechanism of RSOW, are examined. The RSOW is identified and tracked as a layer with minimum potential vorticity and maximum chlorofluorocarbon-12. The pathway of the RSOW is also explored using numerical simulation. If diffusivity is not considered, the production rate of the RSOW is estimated to be 0.63 Sv using Walin's method. By comparing this 0.63 Sv to the actual RSOW transport at the Strait of Bab el Mandeb, it is implied that the vertical diffusivity is about 3.4 x10-5 m 2 s-1. The second part of the thesis studies buoyancy-forced circulation in an idealized Red Sea. Buoyancy-loss driven circulation in marginal seas is usually dominated by cyclonic boundary currents on f-plane, as suggested by previous observations and numerical modeling. This thesis suggests that by including [beta]-effect and buoyancy loss that increases linearly with latitude, the resultant mean Red Sea circulation consists of an anticyclonic gyre in the south and a cyclonic gyre in the north. In mid-basin, the northward surface flow crosses from the western boundary to the eastern boundary. The observational support is also reviewed. The mechanism that controls the crossover of boundary currents is further explored using an ad hoc analytical model based on PV dynamics. This ad hoc analytical model successfully predicts the crossover latitude of boundary currents. It suggests that the competition between advection of planetary vorticity and buoyancy-loss related term determines the crossover latitude. The third part of the thesis investigates three mechanisms that might account for eddy generation in the Red Sea, by conducting a series of numerical experiments. The three mechanisms are: i) baroclinic instability; ii) meridional structure of surface buoyancy losses; iii) cross-basin wind fields.
by Ping Zhai.
Ph. D.
Yang, Lina, and 阳丽娜. "City ventilation of Hong Kong by thermal buoyancy." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841380.
Повний текст джерелаLuo, Zhiwen, and 罗志文. "City ventilation by slope wind." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B46089962.
Повний текст джерелаMazloff, Matthew R. "Production and analysis of a Southern Ocean state estimate." Thesis, Online version, 2006. http://hdl.handle.net/1912/1282.
Повний текст джерела"September 2006." Bibliography: p. 97-106.
Dail, Holly Janine. "Atlantic Ocean circulation at the last glacial maximum : inferences from data and models." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78367.
Повний текст джерелаThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (p. 221-236).
This thesis focuses on ocean circulation and atmospheric forcing in the Atlantic Ocean at the Last Glacial Maximum (LGM, 18-21 thousand years before present). Relative to the pre-industrial climate, LGM atmospheric CO₂ concentrations were about 90 ppm lower, ice sheets were much more extensive, and many regions experienced significantly colder temperatures. In this thesis a novel approach to dynamical reconstruction is applied to make estimates of LGM Atlantic Ocean state that are consistent with these proxy records and with known ocean dynamics. Ocean dynamics are described with the MIT General Circulation Model in an Atlantic configuration extending from 35°S to 75°N at 1° resolution. Six LGM proxy types are used to constrain the model: four compilations of near sea surface temperatures from the MARGO project, as well as benthic isotope records of [delta]¹⁸O and [delta]¹³C compiled by Marchal and Curry; 629 individual proxy records are used. To improve the fit of the model to the data, a least-squares fit is computed using an algorithm based on the model adjoint (the Lagrange multiplier methodology). The adjoint is used to compute improvements to uncertain initial and boundary conditions (the control variables). As compared to previous model-data syntheses of LGM ocean state, this thesis uses a significantly more realistic model of oceanic physics, and is the first to incorporate such a large number and diversity of proxy records. A major finding is that it is possible to find an ocean state that is consistent with all six LGM proxy compilations and with known ocean dynamics, given reasonable uncertainty estimates. Only relatively modest shifts from modern atmospheric forcing are required to fit the LGM data. The estimates presented herein succesfully reproduce regional shifts in conditions at the LGM that have been inferred from proxy records, but which have not been captured in the best available LGM coupled model simulations. In addition, LGM benthic [delta]¹⁸O and [delta]¹³C records are shown to be consistent with a shallow but robust Atlantic meridional overturning cell, although other circulations cannot be excluded.
by Holly Janine Dail.
Ph.D.
Книги з теми "Atmospheric circulation Africa Mathematical models"
Enting, I. G. A strategy for calibrating atmospheric transport models. Melbourne: Commonwealth Scientific and Industrial Research Organization, Australia, 1985.
Знайти повний текст джерелаTschuck, Peter. Atmospheric blocking in a general circulation model. Zürich: Geographisches Institut ETH, 1998.
Знайти повний текст джерелаMansbridge, J. V. Sensitivity studies in a two-dimensional atmospheric transport model. Australia: CSIRO, 1989.
Знайти повний текст джерелаEnting, I. G. Preliminary studies with a two-dimensional model using transport fields derived from a GCM. Melbourne: Commonwealth Scientific and Industrial Research Organization, Australia, 1987.
Знайти повний текст джерелаBerner, Judith. Detection and stochastic modeling of nonlinear signatures in the geopotential height field of an atmospheric general circulation model. St. Augustin [Germany]: Asgard Verlag, 2003.
Знайти повний текст джерелаSempf, Mario. Nichtlineare Dynamik atmosphärischer Zirkulationsregime in einem idealisierten Modell: Nonlinear dynamics of atmospheric circulation regimes in an idealized model. Bremerhaven: Alfred-Wegener-Institut für Polar- und Meeresforschung, 2006.
Знайти повний текст джерелаWeisheimer, Antje. Niederfrequente Variabilität grossräumiger atmosphärischer Zirkulationsstrukturen in spektralen Modellen niederer Ordnung =: Ultra-low-frequency variability of large scale atmospheric circulation patterns in spectral low-order models. Bremerhaven: Alfred-Wegener-Institut für Polar- und Meeresforschung, 2000.
Знайти повний текст джерелаEnting, I. G. Preliminary studies with a two-dimensional model using transport fields derived from a GCM. Melbourne: CISRO Australia, 1987.
Знайти повний текст джерелаDonner, Leo Joseph, Richard Somerville, and Wayne H. Schubert. The development of atmospheric general circulation models: Complexity, synthesis, and computation. Cambridge: Cambridge University Press, 2011.
Знайти повний текст джерелаVychislenie dostupnoĭ potent͡s︡ialʹnoĭ ėnergii v dvusloĭnoĭ modeli Mint͡s︡a-Arakavy. Moskva: Vychislitelʹnyĭ t͡s︡entr AN SSSR, 1987.
Знайти повний текст джерелаЧастини книг з теми "Atmospheric circulation Africa Mathematical models"
Lenhard, Johannes. "Experiment and Artificiality." In Calculated Surprises, 17–45. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190873288.003.0002.
Повний текст джерела