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Weather station and annual temperature dynamics in the elevation gradient (spatial and temporal analysis of Chitwan-Annapurna, Nepal)


Abstract

This research was objectively done to assess gaps in distribution of weather stations, show temperature status and dynamics. Hence, primary data specifically minimum and maximum temperature from 1970 to 2015 was collected from 35 functional weather stations in Chitwan Annapurna Landscape (CHAL) of nineteen districts, Nepal. The map of the weather station was prepared. Moreover, linear regression, ANOVA and Duncan test were applied for statistical analysis. The result revealed that there was only one weather station above 3800 m elevation. The annual average, maximum and minimum temperatures below 200 m were 24.84±0.06, 31.07±0.10 and 18.61±0.730C and the difference between these records was 12.460C. The highest differences in the temperature was recorded 14.560C above 3800 m though the maximum and minimum temperatures were very low only 14.94±0.28 and 0.38±0.200C respectively. There was high correlation r2 with 0.955, 0.922 and 0.911 of average, maximum and minimum temperature against the elevation gradient. The annual increase in average temperature ranges between 0.02-0.060C. There was significance difference in annual increase in temperature according to elevation gradient. Moreover, there were eight statistically significant clusters of increasing temperature according to elevation gradient. The study guides the need of more weather stations. 

Keywords

climate, weather, temperature, meteorological station, distribution, increase, altitude

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