The convergence of science is a natural tendency and a sure choice for the development of science worldwide in the 21st century. Taking as examples the climate-related literature in the data banks of both SCI and SSCI, and applying the newly-emerged visualized information software and technical means, the paper obtains visualized subject-specific maps of knowledge domains, which may be used to analyze the development trend of disciplines in the evolution of the converging science. As indicated by the analysis, the subject distribution of global climate researches covers many disciplines including the natural sciences, the social sciences, the humanities, and other cross-cutting subjects. The number of climate-related papers increases sharply, and the number of subjects is also in gradual increase. The research results would be remarkably indicative to the allocation of S&T human resources and the fostering of talents in higher-learning institutions in China. Some further and in-depth studies are required in the micro level.