Based on 158 station observations of temperature (including average, lowest and highest temperature), precipitation and wind speed in and around Qinghai-Tibetan Plateau (QTP) from 1961 to 2010, the climate change characteristics in QTP were analyzed. The results are as follows:(1) The main body of QTP was getting significantly warmer and wetter, while the wind speed of the plateau was decreasing. But some parts of the eastern QTP were warming and drying. (2) The temperature rise was mainly contributed by the lowest temperature at night. The heating rates varied in different regions and it was higher in the central QTP than that in the east. The average and maximum temperatures had abrupt changes in 1994 and 1997, respectively. The rising rate was obviously accelerated after the mutation. There were quasi-8-year oscillations in all three temperatures, while other shorter-and longer-period oscillations were inconsistent. (3) The spatial distribution of precipitation decreased gradually from southeast to northwest, and there were several abrupt changes, which occurred in 1965, 1977 and 1995, respectively. The change rate of precipitation before and after the abrupt change was obviously different. There are quasi-4-year and quasi-10-year oscillations in precipitation and the wind speed had 18~20 year oscillation. (4) The first load vector of EOF decomposition of the average, the lowest and the highest temperature of QTP showed the same positive value in the whole region, and the center area was located in the area of 94°E97°E, which indicated that the hinterland of QTP was the most sensitive areas of the average, lowest and highest temperature changes. (5) The second load vector of EOF decomposition of average, lowest and highest temperature generally showed that the main body of the plateau was opposite to that of the eastern and northern marginal regions. That is, when the main body of the plateau was heating up (cooling), the eastern and northern fringes were cooling (warming).
XU Lijiao
,
HU Zeyong
,
ZHAO Ya'nan
,
HONG Xiaoyu
. Climate Change Characteristics in Qinghai-Tibetan Plateau during 1961-2010[J]. Plateau Meteorology, 2019
, 38(5)
: 911
-919
.
DOI: 10.7522/j.issn.1000-0534.2018.00137
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