Paper Reviewed
Ahmad, W., Fatima, A., Awan, U.K. and Anwar, A. 2014. Analysis of long term meteorological trends in the middle and lower Indus Basin of Pakistan - A non-parametric statistical approach. Global and Planetary Change 22: 282-291.

Based on mean monthly data from 1971 to 2010 that were collected at 12 meteorological stations spread across the middle and lower reaches of the Indus Basin in Pakistan, Ahmad et al. (2014) determined that daily maximum air temperature rose at a mean annual rate of 0.0575°C, while daily minimum air temperature rose at a mean annual rate of 0.2825°C, which latter rate was approximately 390% greater than that of the daily maximum temperature's annual rate of rise.

That these findings are not unusual - and are essentially the norm - has been well demonstrated by the global study of Donat et al. (2013), as well as the earlier work of Easterling et al. (1997), Karl et al. (1991) and Karl et al. (1984). And that they are actually findings to be welcomed is demonstrated by a host of studies that have shown that cold temperature extremes lead to the sickness and deaths of many more people than do warm temperature extremes, several examples of which fact are filed under various subheadings of the topic Health Effects (Temperature - Hot vs. Cold Weather) in our website's Subject Index.

References
Donat, M.G., Alexander, L.V., Yang, H., Durre, I., Vose, R., Dunn, R.J.H., Willett, K.M., Aguilar, E., Brunet, M., Caesar, J., Hewitson, B., Jack, C., Klein Tank, A.M.G., Kruger, A.C., Marengo, J., Peterson, T.C., Renom, M., Rojas, C.O., Rusticucci, M., Salinger, J., Elrayah, A.S., Sekele, S.S., Srivastava, A.K., Trewin, B., Villarroel, C., Vincent, L.A., Zhai, P., Zhang, X. and Kitching, S. 2013. Updated analyses of temperature and precipitation extreme indices since the beginning of the twentieth century: The HadEX2 dataset. Journal of Geophysical Research (Atmospheres) 118: 2098-2118.

Easterling, D.R., Horton, B., Jones, P.D., Peterson, T.C., Karl, T.R., Parker, D.E., Salinger, M.J., Razuvayev, V., Plummer, N., Jamason, P. and Folland, C.K. 1997. Maximum and minimum temperature trends for the globe. Science 277: 364-367.

Karl, T.R., Jones, P.D., Knight, R.W., Kukla, G., Plummer, N., Razuvayev, V., Gallo, K.P., Lindseay, J., Charlson, R.J. and Peterson, T.C. 1984. A new perspective on recent global warming: asymmetric trends of daily maximum and minimum temperature. Bulletin of the American Meteorological Society 74: 1007-1023.

Karl, T.R., Kukla, G., Razuvayev, V.N., Changery, M.J., Quayle, R.G., Heim Jr., R.R., Easterling, D.R. and Fu, C.B. 1991. Global warming: evidence for asymmetric diurnal temperature change. Geophysical Research Letters 18: 2253-2256.