U.S.-Brazil Cooperative Science Program: A Numerical Study of the Tropical Atlantic Circulation with an IsopycnicCoordinate Circulation Model (NUSTRAC)

这项美国-巴西合作科学奖将资助迈阿密大学的雷纳·布莱克（Rainer Bleck）和一名研究生与巴西圣保罗大学的埃德莫·坎波斯（Edmo Campos）合作前往巴西。该项目的目的是在数值框架内研究控制热带大西洋海洋环流的动力和热力学过程。将要使用的模型是Bleck和其他人在迈阿密开发的等参坐标模型的热力学活跃版本。在这种情况下，该模型的主要优势将是消除无意的，数值诱导的垂直热扩散。研究人员还计划对海洋对大气热力强迫的响应进行全面研究。他们还将关注主要的年际和年代际变化信号，通常被称为“大西洋海温偶极子”。美国方面将受益于赤道水团交换现象，这将大大增加美国的北大西洋环流模式。巴西方面将获得海洋模拟能力的增强，这将使该国能够为未来的全球气候变化研究作出贡献。

This U.S.-Brazil Cooperative Science award will support travel to Brazil for Rainer Bleck of the University of Miami, along with a graduate student, in collaboration with Edmo Campos of the University of Sao Paulo, Brazil. The project aims to study, in a numerical framework, dynamic and thermodynamic processes governing oceanic circulation in the tropical Atlantic. The model to be used is the thermodynamically active version of the Isopycnic Coordinate model developed at Miami by Bleck and others. The model's main advantage in this context will be to eliminate inadvertent, numerically induced vertical heat diffusion. The researchers also plan to conduct a comprehensive study of the oceanic response to atmospheric thermodynamic forcing. They will also focus on the main interannual and decadal variability signal, commonly called the "Atlantic SST dipole." The U.S. side will benefit from access to equatorial phenomena of water mass exchanges, which will add significantly to the U.S. models of circulation in the North Atlantic. The Brazilian side will gain an enhanced capability in ocean modeling, which will position the country to contribute to future research on global climate change.