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Analysis of Temperature and Precipitation Trends Observed at Some Selected Districts of Punjab, Pakistan

机译:巴基斯坦旁遮普地区观察到温度和降水趋势分析

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Present study examines the trends of extreme daily temperature and rainfall indices in some selectedmeteorological stations/districts of the Punjab. Due to paucity of data only six weather stations were selected from thewhole Punjab, having data of 33 years for temperature and precipitation on daily basis. A set of 14 indices(recommended by climate ET) were used to calculate the trends over a period of 32 years (1985–2017) by usingRClimDex (1.0) software package. These results showed that the number of tropical nights (TR20) and warm nights(TN90p) has been increasing in selected weather stations/districts and number for cool nights (TN10p) has been falling.Other temperature related indices trends such as, summer days, warms days, warm spell duration indicator (WSDI) andcool spell duration (CSDI) shows a mix pattern. The precipitation indices like SDII, RX1day, R10mm and PRCPTOTshowed an increasing trend in some selected stations. Most of the trends were not significant at level of 0.05 % whilemaximum day temperature increase has been observed at five out of six selected stations. Similarly, an average increasein precipitation in the vicinity of 3 mm per decade has been noted. The annual total rainfall and number of heavyrainfall days has also increased by 18 mm and 8.4 mm respectively during each decade. The analysis identified andhighlighted a slight change which was not temporally and spatially rational. However, there is need to more andadequate yearly data of different weather stations across the Punjab to identify the ongoing apparent and impeccablechanges in climate of the Punjab province.
机译:目前研究探讨了旁遮普地区某些选择的微调站/地区的极端日常温度和降雨指数的趋势。由于数据的缺乏,仅选中六个气象站,从Ole Punjab中选择了33岁的数据,每天的温度和降水量。通过使用rClimdex(1.0)软件包来计算一组14个指数(由气候ET推荐)来计算32岁(1985-2017)的趋势。这些结果表明,热带夜晚(TR20)和温暖的夜晚(TN90P)的数量在选定的气象站/地区和酷夜的数量(TN10P)已经下降。其他温度相关指数,如夏天,温暖的日子,温暖的法术持续时间指示器(WSDI)和COOL法术持续时间(CSDI)显示了混合模式。 SDII,RX1Day,R10MM等降水指数,并在某些选定站中提出了越来越多的趋势。大多数趋势在0.05%的水平下没有显着,在六个选定的站中的五个中,已经观察到六个选定的五天。同样,已经注意到平均增加了每十年3毫米的沉淀。每年的年度总降雨量和重度降雨量的数量也分别增加了18毫米和8.4毫米。鉴定了分析,并且在瞬时和空间上没有理性的略有变化。但是,在旁遮普邦的不同气象站的每年都有需要更加令人厌恶,以确定旁遮普省气候的持续明显和障碍。

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