Dingri region in Tibet, the location of Mt Everest, is subject more obviously to global warming. Some experts exclaimed this after they studied the trend of climate variation in Dingri and Jiangzi, respectively the mother region of Mt Himalayas and Mt. Laguigangri.

Their observation showed that in the past few years, annual precipitation, annual mean temperature, winter mean temperature and relative humidity in both regions had been undergone the greatest annual increase. E.g. data in Dingri presented an about 2.6 ℃ increase in annual temperature increase from 1971 to 1992, 1.7 higher than the same proxy from 1960 to 1970. The annual temperature rose more obviously since 1993. During 1998~2002, the annual mean temperature reached as much as 3.3 ℃ plus, with the period between 1998 and 1999 to the peak with 4 ℃ increase annually. Moreover the scale of digression in temperature change turned out to be much larger than Lazi or Rikaze in the range of River Yaluzangbu. Thus the experts confirmed that the west part of Tibet was a region of weak ecology, and that it was subject easily to global warming.

Experts also found that precipitation in this region increased, but the rising temperature meanwhile had doubled the evaporation. They attributed this phenomenon to the weaker ecology there than that in River Yaluzangbu range. As there was little plantation, ecology failed to adjust itself properly to the climate system, thus was more easily subject to various natural disasters. They, thereupon, proposed this region to be the weakest ecological region in Tibet.

But there were experts who were skeptical at this hypothesis. Though the region of Dingri is the mother region of Mt Everest, the temperature change there could hardly confirm the existence of the influence global warming had on the whole mountain.