He says global warming is likely to increase the intensity and frequency of extreme weather events.

VOA: standard.2009.08.30

Another way to increase intensity is the frequency of firing.

另一种会增加反应强度的因素,就是神经冲动产生的频率

耶鲁公开课 - 心理学导论课程节选

"If there is any truth to that, can you imagine the impact on hunger, on acute and chronic malnutrition?" Scientists say the warming of the planet will be gradual, but that extreme weather events will increase in frequency and intensity.

VOA: standard.2010.01.02