According to Baidu Library, the ace majors of Nanjing University are as follows:

1. Atmospheric science: the discipline that mainly studies the physical, chemical and biological processes in the atmosphere and their interaction with the earth's sphere. The main courses include introduction to atmospheric science, atmospheric physics, atmospheric exploration, meteorology, atmospheric dynamics and modern climatology.

2. Astronomy: A discipline that mainly studies celestial bodies in the universe, including stars, planets, galaxies, nebulae, star clusters and galaxy clusters. The main courses usually include introduction to astronomy, astrophysics, astronomical observation technology, astronomical data processing and so on.

3. Environmental science: the study of the interaction between human activities and the natural environment. The main courses include introduction to environmental science, ecological principles, environmental chemistry, environmental biology, environmental geochemistry and so on.

4. Geographic information science: the discipline that mainly studies the acquisition, processing, analysis, expression and management of geographic information. The main courses include geographic introduction to information systems, geographic information system technology and methods, remote sensing image processing, global positioning system, etc.

5. Applied meteorology: mainly study the basic knowledge and skills of meteorology, apply the principles, methods and achievements of meteorology to agriculture, hydrology, navigation, aviation, military and other fields, and solve meteorological problems in related fields. The main courses include atmospheric exploration, synoptic principles, applied meteorological methods, agricultural meteorology, etc.

6. Acoustics: The subject that mainly studies the generation, transmission and reception of sound. The main courses include introduction to acoustics, vibration and wave theory, acoustic signal processing and so on.