(1) It can be seen from the temperature curve and precipitation histogram that 1 in Figure A is cold and dry in winter and hot and rainy in summer, which is a temperate monsoon climate, which is consistent with Figure B; According to the analysis of temperature and precipitation chart provided in Figure A, the difference of climate characteristics between A and B in Figure B is that the winter temperature in A is low, the temperature in B is high, the annual precipitation in A is less, and the annual precipitation in B is more.

(2) As can be seen from the picture, Jiahe is the Tarim River. Because of the high temperature and the melting of ice and snow in July and September, the flood season of the Tarim River occurs in July and September every year.

(3) The clothing differences between the two people in the picture generally appear in winter, because there is a great temperature difference between the north and the south in winter in China.

So the answer is: (1) temperate monsoon climate; 1; In winter, the temperature in place A is low, the temperature in place B is high, the annual precipitation in place A is less, and the annual precipitation in place B is more. (2) Tarim River; The temperature is high from July to September, and the ice and snow melt more; (3) winter; In China, there is a great difference in winter temperature between the north and the south.