Opening of seals and global cooling

As I have mentioned earlier, I believe that the earth will get cold during the end times. My belief on this is from my thoughts on various Bible verses, including; Job 38:22-23, Revelation 6:12-14, Mathew24:29, and Ezekiel 38:19-22. If the sun were to be darkened, it is only logical to assume that the earth would get very cold. Historically even when just a small portion of the sun’s radiation is prevented from reaching earth as it has in the past with large volcanic eruptions, the earth gets significantly cooler. Since darkening of the sun occurs after the opening of the 6th seal, the darkening of the sun associated with its opening could not cause the famine associated with the opening of the 3rd seal. Since I believe that our God is not cruel, I think that he will bring on global cooling progressively so as to give some people some more time to adapt, prepare, and repent before he comes back for the elect. Thus, it is on this that I speculate that the famine of the 3rd seal will be caused in part to global cooling and later with the opening of the sixth seal, things will get really cold, iceage kind of cold.