DOI: 10.1002/joc.5503
论文题名: Observed diurnal temperature range variations and its association with observed cloud cover in northern Pakistan
作者: Waqas A. ; Athar H.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 8 起始页码: 3323
结束页码: 3336
语种: 英语
英文关键词: Mann–Kendall trend
; northern Pakistan
; observed diurnal temperature range
; observed total cloud cover
; Spearman's correlation
; upper Indus basin
Scopus关键词: Climatology
; Earth atmosphere
; Diurnal temperature ranges
; Mann-Kendall trends
; Pakistan
; Total cloud cover
; Upper Indus Basin
; Water management
; air temperature
; cloud cover
; correlation
; diurnal variation
; regional climate
; spatiotemporal analysis
; trend analysis
; Himalayas
; Indus Basin
; Karakoram
; Pakistan
英文摘要: Spatio-temporal variability in the observed diurnal temperature range (DTR) for the recent 30-year period (1986–2015) is examined from a total of 18 weather stations in Hindukush Karakoram Himalaya region of northern Pakistan (HKNP). The daily maximum and minimum temperature data are used to compute the regional DTR, whereas observed total cloud cover (TCC) is used to assess its possible relationship with regional DTR, both on seasonal and annual basis. The regional mean DTR is 13.27 °C on annual basis, with a maximum in autumn (14.63 °C) and minimum in winter (11.81 °C). On annual basis, the regional DTR has increased significantly at a rate of.34 °C/decade, during the 30-year study period at p ≤.05, based on Mann–Kendall test. On seasonal basis, the DTR displays an increasing trend in all four seasons with largest significant increase in the winter season at a rate of.32 °C/decade. The DTR is positively correlated with maximum temperature of the region on seasonal and annual basis. Strong negative correlation is found between the DTR and observed TCC in all seasons, indicating that variability in TCC has an impact on the variation of DTR in this region. The statistically significant increasing DTR trend along with statistically significant decreasing trend of TCC in spring season suggests an early melt of snow and ice covers in the region, consequently changing the hydrological cycle of the region that demands a better water resource management in the HKNP. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116861
Appears in Collections: 气候减缓与适应
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作者单位: Department of Meteorology, COMSATS Institute of Information Technology, Islamabad, Pakistan
Recommended Citation:
Waqas A.,Athar H.. Observed diurnal temperature range variations and its association with observed cloud cover in northern Pakistan[J]. International Journal of Climatology,2018-01-01,38(8)