Variation characteristics of extreme temperature events at grass growing season in Northern Tibet from 1961 to 2010

Jun DU; Kan-she ZHOU; Lei YUAN; Jun JIAN

doi:10.11829/j.issn.1001-0629.2014-0054

Pratacultural Science > 2014 > 8(11): 2026-2033. > DOI: 10.11829/j.issn.1001-0629.2014-0054

Jun DU, Kan-she ZHOU, Lei YUAN, Jun JIAN. Variation characteristics of extreme temperature events at grass growing season in Northern Tibet from 1961 to 2010[J]. Pratacultural Science, 2014, 8(11): 2026-2033. DOI: 10.11829/j.issn.1001-0629.2014-0054

Citation:

PDF (1368 KB)

Variation characteristics of extreme temperature events at grass growing season in Northern Tibet from 1961 to 2010

Jun DU^1,2,3,
Kan-she ZHOU⁴,
Lei YUAN⁴,
Jun JIAN⁵

1.
1. Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610071, China
2.
2. Tibet Climatic Center, Lhasa 850001, China
3.
4.
Tibet Climatic Center, Lhasa 850001, China
5.
Shannan Meteorological Service of Tibet, Tesdang 856000, China

More Information

Received Date: January 28, 2014
Published Date: November 14, 2014

Graphical Abstract

Abstract

Abstract

Based on the daily maximum and minimum temperature data from 6 meteorological stations in Northern Tibet from 1961 to 2010, the temporal and spatial variation characteristics of extreme temperature events at grass growing season were analyzed using the ten indices of extreme temperature. The methods of a 10-year smoothing average, linear regression, correlation analysis, and a Mann-Kendall model test were employed to reveal the rate of change, statistical significance of the trends, and mutation points of extreme temperature indices. The analysis showed that maximum value of daily maximum temperature (TXx), minimum value of daily maximum temperature (TXn), minimum value of daily minimum temperature (TNn) and maximum value of daily minimum temperature (TNx) significantly increased at grass growing season during recent 50 years with the maximum TNn increasing rate at 0.40 ℃·10 a-1. Diurnal temperature range (DTR) significantly decreased at a rate of -0.17 ℃·10 a-1 whereas the length of growing season (GSL) significantly increased with a rate of 1.81 d·10 a-1. The numbers of warm days (TX90p) and warm nights (TN90p) significantly increased with a rate of 4.11 and 11.81 d·10 a-1, respectively(P0.01). Furthermore, the number of TN90p significantly increased with a rate of 23.03 d·10 a-1 during 1981-2010. The numbers of cool days (TX10p) and cold nights (TN10p) significantly decreased with a rate of -3.33 and -6.69 d·10 a-1, respectively(P0.01). In terms of decadal variations, the warm indices (TNx, TX90p,TN90p and GSL) increased while the cold indices(TX10p and TN10p)and DTR decreased. It was also found that the mutation of the TXx was in 1984, the other extreme temperature indices (TNn, TNx, TX10p, TN90p, TN10p, DTR and GSL) occurred after the 1900s, but no mutation occurred for TXn and TX90p. Extreme temperature indices suggested that the climate change was beneficial for grass growing in Northern Tibet.
- extreme temperature indices,
- temporal and spatial variation,
- Northern Tibet

FullText(HTML)

References (1)

References

[1]

Karl T R,Kulda G,Razuvayev V N,Changery M J,Quayle R G,Heim JrR R,Easterling D R,Fu C B.Global warming:Evidence for asymmetric diurnal temperature change[J].Geophysical Research Letters.1991,18(12):2253-2256[2]Easterling D R,Evans J L,Groisman P Y,Karl T R,Kunkel K,Ambenje P.Observed variability and trends in extreme climate events:A brief review[J].Bulletin of the American Meteorological Society.2000,81(3):417-425[3]Bonsal B R,Zhang X B,Vincent L A.Characteristics of daily and extreme temperature over Canada[J].Journal of Climate.2001,14(5):1959-1976[4]Tank A,Knnen G P.Trends in indices of daily temperature and precipitation extremes in Europe,1946-1999[J].Journal of Climate.2003,16(22):3665-3680[6]Zhai P M,Pan X H.Trends in temperature extremes during 1951-1999 in China[J].Geophysical Research Letters.2003,30(17):1913-1916[7]Zhou Y Q,Ren G Y.Change in extreme temperature event frequency over mainland China during 1961-2008[J].Climate Research.2011,50:125-139You Q L,Kang S C,Aguilar E,Yan Y P.Changes in daily climate extremes in the eastern and central Tibetan Plateau during 1961-2005.Journal of Geophysical Research,2008,113:D07101,[11] 孙鸿烈.青藏高原的形成演化.上海:上海科技出版社,1996.[13]盛文萍,高清竹,李玉娥,万运帆,杨凯.藏北地区气候变化特征及其影响分析[J].高原气象.2008,27(3):509-516[14]杜军.藏北牧草青草期的气候变化特征分析[J].应用气象学报.2006,17(1):29-36[16]王景升,张宪洲,赵玉萍,沈振西,石培礼,余成群.藏北羌塘高原气候变化的时空格局[J].资源科学.2008,30(12):1852-1859[17] Peterson T C,Folland C,Gruza G,Hogg W,Mokssit A,Plummer N.Report on the activities of the working group on climate change detection and related rapporteurs(1998-2001).(2006-5-10).Alexander L V,Zhang X,Peterson T C,Caesar J,Gleason B,Klein Tank A M G,Haylock M,Collins D,Trewin B,Rahimzadeh F,Tagipour A,Rupa kumar K,Revadekar J,Griffiths G,Vincent L,Stephenson D B,Burn J,Aguilar E,Brunet M,Taylor M,Mew M,Zhai P,Rusticucci M,Vazquez-Aguirre J L.Global observed changes in daily climate extremes of temperature and precipitation.Journal of Geophysical Research-Atmosphere,2006,111(D5),D05109:1-22.[19] 魏凤英.现代气候统计诊断与预测技术.北京:气象出版社,1999.[20]卓嘎,杨秀海,罗文红.西藏那曲地区气候变化与牧业生产的关系[J].资源科学.2009,31(3):485-492

Cited By

Get Citation

PDF

XML

Article views (1267) PDF downloads (660)

Turn off MathJax

Article Contents

Abstract

References

Variation characteristics of extreme temperature events at grass growing season in Northern Tibet from 1961 to 2010

Abstract

References

Catalog

Export File

Citation

Format

Content