Relationship Between Temperature and Precipitation in the Yangtze River Basin

Based on the simulation results of the seven models provided by the IPCC Data Distribution Center, the future 50-100 of the middle and lower reaches of the Yangtze River were analyzed as a result of the increase of greenhouse gas (GG) and the increase of greenhouse gases and sulfide aerosols (GS) due to human activities. Year, the results show that the future precipitation changes in the 21st century show an increasing trend. From the time point of view, only the consideration of greenhouse gas impact, the spatial scale precipitation has increased the trend of the middle and lower reaches of the Yangtze River precipitation increased slightly higher than the western and eastern regions; consider the greenhouse gas and aerosol sulfide common In the middle and lower reaches of the Yangtze River, the precipitation increased slightly in the early 21st century, and then the increasing trend gradually decreased, and the precipitation decreased in the middle of the 21st century, and the precipitation in the middle and lower reaches of the Yangtze River increased slightly , Until 2080-2090 precipitation has increased the trend. In the next century, the precipitation in the middle and lower reaches of the Yangtze River increased, but there were significant differences in different seasons. GG, the spring and autumn precipitation increased the most obvious, followed by summer; GS, the Yangtze River in the middle and lower reaches of the annual precipitation change is not obvious, In addition to a slight increase in summer precipitation, the remaining seasonal precipitation will be reduced.