" natural " : Global climate is choppy "

From cold arrive warm, again from warm cold, the change of earthly climate, is what think all the time like us really lukewarm in that way swallow swallow, is successive ground changed? Newest research makes clear, in two years of in the past, god also is met often " moody " , incident controlled the climate mutation with wet doing of this kind of changes in temperature to be able to happen 1000.
Wangyong of institute of science of manage of Nanjing division earth considers to reach into the group this conclusion
From cold arrive warm, again from warm cold, the change of earthly climate, is what think all the time like us really lukewarm in that way swallow swallow, is successive ground changed? Newest research makes clear, in two years of in the past, god also is met often " moody " , incident controlled the climate mutation with wet doing of this kind of changes in temperature to be able to happen 1000. Published on Feburary 28 " natural " (Nature) magazine published geography of Nanjing Normal University the paper of the research group that scientific institute Professor Wang Yongjin heads, they undertake to collecting the Shi Sun that within burrow of Hubei Shen Nong Jia 11 different period form thorium isotope measures accurate uranium year. The discovery after research, in 224 thousand years of in the past, east Asia monsoon enrages the dry wet change that await, it is cycle with 23 thousand years, along with the sun radiant energy is measured and synchronism changes. This loop is interrupted by place of incident of climate of chiliad cycle monsoon again, its frequency and duration are in ice age -- in interglacial cycle extremely similar, can forecast a gender. Asian monsoon is like the little girl that a mood fluctuates strongly, no matter big compression ring sheds marine still and circumfluent change, can let her a little while cry, laugh a little while. Wave motion of this one climate affects those who hold inmate of above of world population half to live directly environment, perch of Shen Nong Jia affects area at the model of Asian monsoon -- on the downstream plum rain belt in the Yangtse River. What grow silently in cave is stalagmitic, faithful recorded monsoon precipitation history. Well-known, pass through soil is deliquescent the rainwater of carbon dioxide, the calcium carbonate in can deliquescent rock, in taking cave. Below appropriate condition, dissolve has the water of calcium carbonate to be able to drip to go up, grow a Shi Sun. Wang Yongjin teachs an explanation to say, change of composition of isotope of the oxygen in Shi Sun is bigger, reflect the change of precipitation of corresponding area air directly. In temperature period of generous of tall, rain, constituent of isotope of the oxygen in Shi Sun slants light, conversely criterion lay particular stress on. The scientist passes those who unscramble this nature namely " diary " , the climate change mystery that announces two years to come. Scientist discovery, "Diary " in the long-term change of account monsoon rainfall and synchronism of cycle of sun radiate change undertake, this one achievement holds some for a long time to ancient climate academia " lag says " pose a challenge. The light that the earth that so we live bestows to the sun and heat, reaction is such acumen! Every other was controlled 1000, the whole world is met climate is once choppy, add suddenly lukewarm, drop in temperature, become wet, or it is arid. The area is spent in Gao Wei, this kind of change is OK even make in a few years year of average air temperature of an area rise and fall ten Celsius. In the monsoon area that we live main show is marked dry wet change. The 4000 many climate desiccate incident year ago, make a lot of ancient time civilized disappear or migrate. "But this rule may not suit to conclude 18 centuries are the following climate changes, " Professor Wang Yongjin points out, "After Industrial Revolution, human activity increases greatly to the influence of climate, very difficult now a whole world is calefacient end the error at the mankind, cannot exclude the account that climate itself changes. " Dan Wangyong enters a professor or think, science fiction of before a few years is great " acquired " in describes condition is not without scientific basis. "Climate mutation may make area climate appears to arrive from interglacial stage glacial period change, perhaps should get quickly than what imagine normally much. " unscramble speed of mutation of this kind of climate and its reason to still need to study further. (" natural " (Nature) , 451, 1090-1093, 28February2008, yongjinWang, zhishengAn)