Abstract
Extreme temperatures are changing worldwide together with changes in mean temperatures. This study investigates the daily maximum and minimum temperatures of Guwahati city of Northeast India for different intensity and frequency indices for the period 1971–2010. The trends were estimated by linear regression technique and statistical significance of the trends was determined by Kendall’s tau statistic. Annual mean indices of extreme temperature events, viz, hottest day, hottest night, and coldest night showed increasing trends while coldest day showed decreasing trend. All frequency indices of hot events showed increasing trends while that of the cold events showed decreasing trends. Number of days above 35 °C is increasing significantly. On the other hand, number of nights above 25 °C is increasing while the number of nights below 10 °C is decreasing. Monthly intensity and frequency indices of hot and cold events during two sub-periods of 1971–1990 and 1991–2010 relative to the mean of the entire period (1971–2010) showed that the hottest day temperature was lower in the months of February, March, and April during 1991–2010 while in other months it was higher than the 1971–1990 sub-period. On the other hand, hottest and coldest night temperatures are more during the recent period. Similarly, both the number of hot days and hot nights showed increase in frequencies while number of cold days and cold nights showed decrease in frequencies in almost all months.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Alexander LV et al (2006) Global observed changes in daily climate extremes of temperature and precipitation. J Geophys Res 111:D05109. https://doi.org/10.1029/2005JD006290
Balling RC Jr, Idso S (1989) Historical temperature trends in the United States and the effect of urban population. J Geophys Res 94:3359–3363
Colacino M, Lavagini A (1982) Evidence of the urban heat island in Rome by climatological analyses. Arch Met Geophys BiocL Set B 31:871–897
Colacino M, Rovelli A (2016) The yearly averaged air temperature in Rome from 1782 to 1975. Tellus A: Dyn Meteorol Oceanogr 35(5):389–397
De US, Prakasa R (2004) Urban climate trend—the Indian scenario. J Ind Geophys Union 8(3):199–203
Deka RL, Nath KK, Mahanta C, Sharma K (2012) Recent variability of solar radiation in the upper Brahmaputra valley of Assam. J Agrometeorol 14:145–150
Fujibe F (2011) Urban warming in Japanese cities and its relation to climate change. Int J Climatol 31(3):162–173
Ha KJ, Yun KS (2011) Climate change effects on tropical nigh days in Seoul, Korea. Theor Appl Climatol. https://doi.org/10.1007/s00704-011-0573-y
Hingane LS (1996) Is a signature of socio-economic impact written on the climate? Clim Change 32:91–102
IPCC (2007) Climate change 2007: the physical science basis. Contribution of working group I to the fourth assessment report of the IPCC. In: Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tignor M, Miller HL (eds) Cambridge. Cambridge University Press, UK, p 996
Jhajharia D, Singh VP (2010) Trends of temperature, diurnal temperature range and sunshine duration in Northeast India. Int J Climatol. https://doi.org/10.1002/joc.2164
Jones PD et al (1990) Assessment of urbanization effects in time series of surface air temperature over land. Nature 347:169–172
Jones PD (1999) The use of indices to identify change in climatic extreme. Clim Change 42:131–149
Karl TR et al (1988) Urbanization: its detection and effect in the United States climate record. J Clim 1:1099–1123
Kumari BP et al (2007) Observational evidence of solar dimming: offsetting surface warming over India. Geophys Res Lett 34:L21810. https://doi.org/10.1029/2007GL031133
Plummer N et al (1999) Changes in climate extremes over the Australian region and New Zealand during the twentieth century. Clim Change 42(1):183–202
Press WH et al (1986) Numerical recipes: the art of scientific computing. Cambridge University Press, Cambridge, pp 488–493
Revadekar JV et al (2011) About the observed and future changes in temperature extremes over India. Nat Hazards. https://doi.org/10.1007/s11069-011-9895-4
Rupa Kumar K, Hingane LS (1988) Long term variations of surface air temperature at major industrial cities of India. Clim Change 13:287–307
Thapliyal V, Kulshreshtha SM (1991) Climate changes and trends over India. Mausam 42:333–338
Wild M, Ohmura A, Makowski K (2007) Impact of global dimming and brightening on global warming. Geophys Res Lett 34:L04702. https://doi.org/10.1029/2006GL028031
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG, part of Springer Nature
About this chapter
Cite this chapter
Deka, R.L., Saikia, L., Mahanta, C., Dutta, M.K. (2018). Increasing Extreme Temperature Events in the Guwahati City During 1971–2010. In: Sarma, A., Singh, V., Bhattacharjya, R., Kartha, S. (eds) Urban Ecology, Water Quality and Climate Change. Water Science and Technology Library, vol 84. Springer, Cham. https://doi.org/10.1007/978-3-319-74494-0_13
Download citation
DOI: https://doi.org/10.1007/978-3-319-74494-0_13
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-74493-3
Online ISBN: 978-3-319-74494-0
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)