Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

NING Baoying; YANG Xiaomei; CHANG Li

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Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

NING Baoying, YANG Xiaomei, CHANG Li

文章导航 > Chinese Geographical Science > 2012 > 22(4): 422-436

NING Baoying, YANG Xiaomei, CHANG Li. Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008[J]. 中国地理科学, 2012, 22(4): 422-436.

引用本文:

NING Baoying, YANG Xiaomei, CHANG Li. Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008[J]. 中国地理科学, 2012, 22(4): 422-436.

NING Baoying, YANG Xiaomei, CHANG Li. Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008[J]. Chinese Geographical Science, 2012, 22(4): 422-436.

Citation:

NING Baoying, YANG Xiaomei, CHANG Li. Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008[J]. Chinese Geographical Science, 2012, 22(4): 422-436.

Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

(1. The Lanzhou Branch of the National Science Library, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Cold and Arid Region Environment and Engineering Research Institute, Gansu Hydrology and Water Resources Engineering Research Center, Chinese Academy of Sciences, Lanzhou 730000, China)

Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

(1. The Lanzhou Branch of the National Science Library, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Cold and Arid

摘要: Variations and trends in extreme climate events are more sensitive to climate change than the mean values, and so have
received much attention. In this study, twelve indices of temperature extremes and 11 indices of precipitation extremes at 32
meteorological stations in Hengduan Mountains were examined for the period 1961–2008. The results reveal statistically significant
increases in the temperature of the warmest and coldest nights and in the frequencies of extreme warm days and nights. Decreases of
the diurnal temperature range and the numbers of frost days and ice days are statistically significant. Regional averages of growing
season length also display the trends consistent and significant with warming. At a large proportion of the stations, patterns of
temperature extremes are consistent with warming since 1961: warming trends in minimum temperature indices are greater than those
relating to maximum temperature. As the center of the Shaluli Mountain, the warming magnitudes decrease from inner to outer. Changes
in precipitation extremes is low: trends are difficult to detect against the larger inter-annual and decadal-scale variability of precipitation,
and only the wet day precipitation and the regional trend in consecutive dry days are significant at the 0.05 level. It can be concluded
that the variation of extreme precipitation events is not obvious in the Hengduan Mountains, however, the regional trends generally
decrease from the south to the north. Overall, the spatial distribution of temporal changes of all extreme climate indices in the Hengduan
Mountains illustrated here reflects the climatic complexity in mountainous regions.
- precipitation /
- temperature /
- climate extremes /
- global warming /
- Hengduan Mountains, Qinghai-Tibet Plateau
Abstract: Variations and trends in extreme climate events are more sensitive to climate change than the mean values, and so have
received much attention. In this study, twelve indices of temperature extremes and 11 indices of precipitation extremes at 32
meteorological stations in Hengduan Mountains were examined for the period 1961–2008. The results reveal statistically significant
increases in the temperature of the warmest and coldest nights and in the frequencies of extreme warm days and nights. Decreases of
the diurnal temperature range and the numbers of frost days and ice days are statistically significant. Regional averages of growing
season length also display the trends consistent and significant with warming. At a large proportion of the stations, patterns of
temperature extremes are consistent with warming since 1961: warming trends in minimum temperature indices are greater than those
relating to maximum temperature. As the center of the Shaluli Mountain, the warming magnitudes decrease from inner to outer. Changes
in precipitation extremes is low: trends are difficult to detect against the larger inter-annual and decadal-scale variability of precipitation,
and only the wet day precipitation and the regional trend in consecutive dry days are significant at the 0.05 level. It can be concluded
that the variation of extreme precipitation events is not obvious in the Hengduan Mountains, however, the regional trends generally
decrease from the south to the north. Overall, the spatial distribution of temporal changes of all extreme climate indices in the Hengduan
Mountains illustrated here reflects the climatic complexity in mountainous regions.
- precipitation /
- temperature /
- climate extremes /
- global warming /
- Hengduan Mountains, Qinghai-Tibet Plateau

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Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

(1. The Lanzhou Branch of the National Science Library, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Cold and Arid Region Environment and Engineering Research Institute, Gansu Hydrology and Water Resources Engineering Research Center, Chinese Academy of Sciences, Lanzhou 730000, China)

刊出日期: 2012-07-05

关键词:

precipitation /

temperature /

climate extremes /

global warming /

Hengduan Mountains, Qinghai-Tibet Plateau

摘要: Variations and trends in extreme climate events are more sensitive to climate change than the mean values, and so have
received much attention. In this study, twelve indices of temperature extremes and 11 indices of precipitation extremes at 32
meteorological stations in Hengduan Mountains were examined for the period 1961–2008. The results reveal statistically significant
increases in the temperature of the warmest and coldest nights and in the frequencies of extreme warm days and nights. Decreases of
the diurnal temperature range and the numbers of frost days and ice days are statistically significant. Regional averages of growing
season length also display the trends consistent and significant with warming. At a large proportion of the stations, patterns of
temperature extremes are consistent with warming since 1961: warming trends in minimum temperature indices are greater than those
relating to maximum temperature. As the center of the Shaluli Mountain, the warming magnitudes decrease from inner to outer. Changes
in precipitation extremes is low: trends are difficult to detect against the larger inter-annual and decadal-scale variability of precipitation,
and only the wet day precipitation and the regional trend in consecutive dry days are significant at the 0.05 level. It can be concluded
that the variation of extreme precipitation events is not obvious in the Hengduan Mountains, however, the regional trends generally
decrease from the south to the north. Overall, the spatial distribution of temporal changes of all extreme climate indices in the Hengduan
Mountains illustrated here reflects the climatic complexity in mountainous regions.

English Abstract

Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

(1. The Lanzhou Branch of the National Science Library, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Cold and Arid

Publish Date: 2012-07-05

Keywords:

precipitation /
temperature /
climate extremes /
global warming /
Hengduan Mountains, Qinghai-Tibet Plateau

Abstract: Variations and trends in extreme climate events are more sensitive to climate change than the mean values, and so have
received much attention. In this study, twelve indices of temperature extremes and 11 indices of precipitation extremes at 32
meteorological stations in Hengduan Mountains were examined for the period 1961–2008. The results reveal statistically significant
increases in the temperature of the warmest and coldest nights and in the frequencies of extreme warm days and nights. Decreases of
the diurnal temperature range and the numbers of frost days and ice days are statistically significant. Regional averages of growing
season length also display the trends consistent and significant with warming. At a large proportion of the stations, patterns of
temperature extremes are consistent with warming since 1961: warming trends in minimum temperature indices are greater than those
relating to maximum temperature. As the center of the Shaluli Mountain, the warming magnitudes decrease from inner to outer. Changes
in precipitation extremes is low: trends are difficult to detect against the larger inter-annual and decadal-scale variability of precipitation,
and only the wet day precipitation and the regional trend in consecutive dry days are significant at the 0.05 level. It can be concluded
that the variation of extreme precipitation events is not obvious in the Hengduan Mountains, however, the regional trends generally
decrease from the south to the north. Overall, the spatial distribution of temporal changes of all extreme climate indices in the Hengduan
Mountains illustrated here reflects the climatic complexity in mountainous regions.

NING Baoying, YANG Xiaomei, CHANG Li. Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008[J]. 中国地理科学, 2012, 22(4): 422-436.

引用本文:

NING Baoying, YANG Xiaomei, CHANG Li. Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008[J]. 中国地理科学, 2012, 22(4): 422-436.

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Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

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出版历程

Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

(1. The Lanzhou Branch of the National Science Library, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Cold and Arid Region Environment and Engineering Research Institute, Gansu Hydrology and Water Resources Engineering Research Center, Chinese Academy of Sciences, Lanzhou 730000, China)

English Abstract

Changes of Temperature and Precipitation Extremes in Hengduan Mountains, Qinghai-Tibet Plateau in 1961–2008

(1. The Lanzhou Branch of the National Science Library, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Cold and Arid

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