2015英特爾ISEF獲獎作品摘要 物理學和天文學 Intel Finalist Abstract Physics and Astronomy

獲獎作品基本信息

年份	2015
學科	物理與天文學 Physics and Astronomy
國家/州	United States of America

獲獎作品名稱

Coupled Hydrodynamic Ocean and Atmospheric Simulation of El Nio

獲獎作品摘要

This project investigates the El Ni??o-Southern Oscillation (ENSO) and determines the effects it has on: rainfall rates, sea surface temperatures (SST), and wind stress on the ocean using a simple hydrodynamic model. A stacked and coupled 2D ocean and atmospheric mesh are used to solve balanced flow (equilibrium) hydrodynamics in the Pacific Ocean region. A wind-shear stress, Ekman pumping, evaporation, and condensation models were developed to provide coupling between the ocean and atmosphere. I wrote a multi-threaded C++ code from scratch to create my simulations. The initial ocean and atmospheric pressures were set by fitting Gaussian functions to observed yearly average values (nominal case). To model El Ni??o (La Ni??a), a low (high) pressure system is placed near Tahiti. For El Ni??o (La Ni??a), my simulation results show warmer (cooler) ocean surface temperatures and more (less) rainfall accumulated along the equatorial region. My simulation results are in good agreement with the NOAA data and seven professional models. The effects of global warming on ENSO were also studied by increasing the global SST in 0.5 degree steps up to 5 °C above the normal SST. A stochastic approach was used to model random atmospheric fluctuations including feedback from the SST and reflections of the thermocline "waves" off the west Pacific coastline. My simulation results predict that global warming will increase the ENSO intensity and rainfall along the equatorial region. These results were compared to a NOAA climate model and are consistent with a recently published analysis of several professional models.

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高中生科研學術活動 英特爾 Intel ISEF 簡介

英特爾國際科學與工程大獎賽，簡稱 "ISEF"，由美國 Society for Science and the Public（科學和公共服務協(xié)會）主辦，英特爾公司冠名贊助，是全球規(guī)模最大、等級最高的中學生的科研科創(chuàng)賽事。ISEF 的學術活動學科包括了所有數學、自然科學、工程的全部領域和部分社會科學。ISEF 素有全球青少年科學學術活動的“世界杯”之美譽，旨在鼓勵學生團隊協(xié)作，開拓創(chuàng)新，長期專一深入地研究自己感興趣的課題。

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英特爾 ISEF 學術活動詳細介紹

英特爾 ISEF 全程指導方案

· 數學 · 物理 · 化學 · 生物 · 計算機 · 工程 ·

學科簡介：物理與天文學 Physics and Astronomy

Physics is the science of matter and energy and of interactions between the two. Astronomy is the study of anything in the universe beyond the Earth.

Subcategories:

Atomic, Molecular, and Optical Physics?(AMO):?The?study of atoms, simple molecules, electrons, light, and their interactions.? Projects studying?non-solid state?lasers and masers also belong in this subcategory.

Astronomy and Cosmology?(AST):?The study of space,? the universe as a whole, including its origins and evolution, the physical properties of objects in space and computational astronomy.

Biological Physics?(BIP):?The study of the physics of biological processes and systems.

Condensed Matter and Materials?(MAT):?The study of the properties of solids and liquids. Topics such as superconductivity, semi-conductors, complex fluids, and thin films are studied.

Mechanics?(MEC):?Classical physics and mechanics, including the macroscopic study of forces, vibrations and flows; on solid, liquid and gaseous materials.?Projects studying aerodynamics or hydrodynamics also belong in this subcategory.

Nuclear and Particle Physics?(NUC):?The study of the physical properties of the atomic nucleus and of fundamental particles and the forces of their interaction.?Projects developing particle detectors also belong in this subcategory.

Theoretical, Computational, and Quantum Physics?(THE):?The study of nature, phenomena and the laws of physics employing mathematical or computational methods?rather than experimental processes.

Other?(OTH):?Studies that cannot be assigned to one of the above subcategories. If the project involves multiple subcategories, the principal subcategory should be chosen instead of Other.