Contemporary climatic change over the qinghai-xizang plateau and its response to the green-house effect

Liu, Xiaodong; Zhang, Minfeng

doi:10.1007/s11769-997-0034-9

Cited by 34 publications

(33 citation statements)

References 4 publications

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“…The analysis based on the data from 97 meteorological stations indicates that the temperature over Tibetan Plateau has risen obviously since 1950 and Tibetan Plateau is one of the most sensitive regions which response to the global climatic change [29] . The number of stations, which have the records of precipitation increase, are increasing with the global warming [30] . The further analysis suggests that precipitation and the temperature significantly correlated with r=0.85 (N=34, p<0.0001), after the precipitation lagged temperature for 2 years.…”

Section: Resultsmentioning

confidence: 99%

Precipitation variation in the northeastern Tibetan Plateau recorded by the tree rings since 850 AD and its relevance to the Northern Hemisphere temperature

Liu

et al. 2006

SCI CHINA SER D

137

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Three well-dated Sabina Przewalskii ring-width chronologies from Dulan, China, have been used to reconstruct annual precipitation (from prior July to current June) variations on the northeast Tibetan Plateau since 850 AD. The reconstructions account of the instrumentally recorded precipitation variance are: 54.7% for the period of 1385-2000AD; 50.5% for 1099-1384AD and 45.7% for 850-1098AD. On the millenary scale, the precipitation variation over this region displays "W" shape, which has three peaks and two valleys. The precipitation is low during 1571-1879 AD, and high during 1880-2000 AD. 1900-2000 AD is the century with the highest precipitation over the northeast Tibetan Plateau in the last 1000 years, and 1962-2000 is the period with the highest precipitation, and the highest variability of precipitation as well in the last 1000 years. The reconstructed series also reveals that the variability of annual precipitation is large when the precipitation is more, and contrarily, variability is small when the precipitation is low. With the temperature increasing obviously in the 20th century, the precipitation in the study region significantly increased too, the variability of precipitation became larger, and drought and flooding occurred more frequently.The yearly tree-ring width (high frequency signal) series in this region reflects the local annually precipitation variation. However, the series with 40-year moving average (low frequency signal) corresponds to the Northern Hemisphere temperature variations on the decadal to centurial scale. It correlates significantly with seven temperature curves of the Northern Hemisphere in the different time spans. For example, the correlation coefficients with the most temperature curves are around 0.9 during the period of 1852-1982 AD. In general, the temperature and the precipitation change synchronously in the Dulan region. It means that low temperature corresponds to low precipitation, and

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Section: Resultsmentioning

confidence: 99%

Precipitation variation in the northeastern Tibetan Plateau recorded by the tree rings since 850 AD and its relevance to the Northern Hemisphere temperature

Liu

et al. 2006

SCI CHINA SER D

137

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“…It seems that the recent warming over the TP began early and appeared intense with respect to global warming compared with its neighbouring areas or the same latitudinal zone. In this sense, the TP can be regarded as one of the most sensitive areas to global change (Liu and Zhang, 1998). Consequently, temperature changes over high-elevation regions such as the TP could be used as a detection tool or as a monitor for global warming (Giorgi et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

Climatic warming in the Tibetan Plateau during recent decades

2000

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Adequate knowledge of climatic change over the Tibetan Plateau (TP) with an average elevation of more than 4000 m above sea level (a.s.l.) has been insufficient for a long time owing to the lack of sufficient observational data. In the present study, monthly surface air temperature data were collected from almost every meteorological station on the TP since their establishment. There are 97 stations located above 2000 m a.s.l. on the TP; the longest records at five stations began before the 1930s, but most records date from the mid-1950s. Analyses of the temperature series show that the main portion of the TP has experienced statistically significant warming since the mid-1950s, especially in winter, but the recent warming in the central and eastern TP did not reach the level of the 1940s warm period until the late 1990s. Compared with the Northern Hemisphere and the global average, the warming of the TP occurred early. The linear rates of temperature increase over the TP during the period 1955 -1996 are about 0.16°C/decade for the annual mean and 0.32°C/decade for the winter mean, which exceed those for the Northern Hemisphere and the same latitudinal zone in the same period. Furthermore, there is also a tendency for the warming trend to increase with the elevation in the TP and its surrounding areas. This suggests that the TP is one of the most sensitive areas to respond to global climate change.

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“…This EOFsbased method has been applied to extended temperature time series successfully in previous studies (Tu, 1986;Zhu et al, 1997;Liu et al, 1998).…”

Section: Eof-based Temperature Series Extensionmentioning

confidence: 99%

“…Even though a global increased temperature pattern has emerged, there are still considerable discrepancies between regional temperature variations, in particular the differences between the northern and southern hemispheres Jones and Moberg, 2003;Folland et al, 2001). In China, Liu et al (1998) analyzed temperature variations on the Tibetan Plateau and discovered that the general temperature trend increased during the period between the 1920s and 1940s, with significant temperature variation across this area. Annual mean surface air temperature over the Tibetan Plateau increased prior to and was of greater amplitude than that of the NH.…”

Section: Introductionmentioning

confidence: 99%

Rapid warming in mid-latitude central Asia for the past 100 years

Chen

Wang

Jin

et al. 2009

Front. Earth Sci. China

125

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Surface air temperature variations during the last 100 years in mid-latitude central Asia were analyzed using Empirical Orthogonal Functions (EOFs). The results suggest that temperature variations in four major sub-regions, i.e. the eastern monsoonal area, central Asia, the Mongolian Plateau and the Tarim Basin, respectively, are coherent and characterized by a striking warming trend during the last 100 years. The annual mean temperature increasing rates at each sub-region (representative station) are 0.19°C per decade, 0.16°C per decade, 0.23°C per decade and 0.15°C per decade, respectively. The average annual mean temperature increasing rate of the four sub-regions is 0.18°C per decade, with a greater increasing rate in winter (0.21°C per decade). In Asian mid-latitude areas, surface air temperature increased relatively slowly from the 1900s to 1970s, and it has increased rapidly since 1970s. This pattern of temperature variation differs from that in the other areas of China. Notably, there was no obvious warming between the 1920s and 1940s, with temperature fluctuating between warming and cooling trends (e.g. 1920s, 1940s, 1960s, 1980s, 1990s). However, the warming trends are of a greater magnitude and their durations are longer than that of the cooling periods, which leads to an overall warming. The amplitude of temperature variations in the study region is also larger than that in eastern China during different periods.

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Contemporary climatic change over the qinghai-xizang plateau and its response to the green-house effect

Cited by 34 publications

References 4 publications

Precipitation variation in the northeastern Tibetan Plateau recorded by the tree rings since 850 AD and its relevance to the Northern Hemisphere temperature

Precipitation variation in the northeastern Tibetan Plateau recorded by the tree rings since 850 AD and its relevance to the Northern Hemisphere temperature

Climatic warming in the Tibetan Plateau during recent decades

Rapid warming in mid-latitude central Asia for the past 100 years

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