Abstract
The variability of spatial and temporal trends in extreme precipitation indices and the trend directions were studied for the meteorological seasons of 1950 to 2010. A daily precipitation dataset from 15 weather stations in Pakistan was used. Seven indices were chosen: total precipitation from events ≥ 90th, 95th, and 99th percentiles, the number of days with precipitation ≥ 90th, 95th, and 99th percentiles of daily precipitation amounts, and annual dry days. A study investigating temporal changes in the spatial extent of statistically significant extreme precipitation events was performed. Trends were calculated for each of the 30-year moving periods within the 1950–2010 time period using a simple linear regression technique and Kendall’s tau-based slope estimator. A distinct spatial differentiation appeared in the prevailing directional trends between the northern and southwestern parts of the study area. In all seasons, increasing trends in extreme precipitation dominated in northeastern Pakistan, whereas a reducing tendency towards extreme precipitation prevails in the southwestern part of the country.
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Afzal, M., and Q. Zaman, 2010: Case study: Heavy rainfall events over Lai Nullah catchment area. Pakistan J. Meteor., 6(12), 39–48.
Aziz, A., and S. Tanaka, 2011: Regional parameterization and applicability of intergrated flood analysis system (IFAS) for flood forcasting of upper-middle Indus river. Pakistan J. Meteor., 8(15), 21–38.
Brunetti, M., M. Colacino, M. Maugeri, and T. Nanni, 2001: Trends in the daily intensity of precipitation in Italy from 1951 to 1996. Int. J. Climatol., 21(3), 299–316.
____, M. Maugeri, and T. Nanni, 2001: Changes in total precipitation, rainy days and extreme events in Northeastern Italy. Int. J. Climatol., 21(7), 861–871.
Burt, T. P., and E. J. S. Ferranti, 2010: Changing patterns of heavy rainfall in upland areas: a case study from northern England. Int. J. Climatol., DOI: 10.1002/joc.2287.
Caloiero, T., R. Coscarelli, E. Ferrari, and M. Mancini, 2011: Trend detection of annual and seasonal rainfall in Calabria (Southern Italy). Int. J. Climatol., DOI: 10.1002/joc.2055.
Deshpande, N. R., A. Kulkarni, and K. K. Kumar, 2011: Characteristic features of hourly rainfall in India. Int. J. Climatol., DOI: 10.1002/joc.2375.
Dravitzki, S., and J. Mcgregor, 2010: Extreme precipitation of the Waikato region, New Zealand. Int. J. Climatol., DOI: 10.1002/joc.2189.
Field, A., 2005: Discovering Statistics Using SPSS. 2nd Edition, SAGE Publication, London, 131 pp.
Frei, C., and C. Schar, 2000: Detection probability of trends in rare events: theory and application to heavy precipitation in the Alpine region. J. Climate., 14(7), 1568–1584.
Gillies, R. R., S. Y. Wang, and W. R. Huang, 2011: Observational and supportive modeling analysis of winter precipitation change in China over the last half century. Int. J. Climatol., DOI: 10.1002/joc.2303.
Hassan, M. A., S. Haider, and U. Kalim, 2011: Diagnostic study of heavy downpour in the central part of Pakistan J. Meteor., 7(13), 53–61.
Harju, A. B., A. Grimvall, and C. N. Bromssen, 2010: A test for network-wide trends in rainfall extremes. Int. J. Climatol., DOI: 10.1002/joc.2263.
Haylick, M., and N. Nicholls, 2000: Trends in extreme rainfall indices for an updated high quality data set for Australia, 1910–1998. Int. J. Climatol., 20(13), 1533–1541.
Hussain, M. S., and S. Lee, 2009: A classification of rainfall regions in Pakistan. J. Korean Geographical Soc., 44(5), 605–623.
Iwasaki, H., 2010: Recent positive trend in heavy rainfall in eastern Japan and its relation with variations in atmospheric moisture. Int. J. Climatol., DOI: 10.1002/joc.2269.
Kazi, S. A., 1951: Climatic regions of West Pakistan. Pakistan Geographical Review, 6(1), 1–22.
Khan, J. A., 1993: The Climate of Pakistan. Rehber Publishers, Karachi.
Kunkel, K.E., 2003: North American trends in extreme precipitation. Nat. Hazards 29(2), 291–305.
Lee, S. H., E. K. Kim, and I. H. Heo, 2011: A study on variability of extreme precipitation by basin in South Korea. J. Korean Geographical Soc., 17(5), 505–520.
Li, J., J. Feng, and Y. Li, 2011: A possible cause of decreasing summer rainfall in northeast Australia. Int. J. Climatol., DOI: 10.1002/joc.2328.
Lupikasza, E., 2010: Spatial and temporal variability of extreme precipitation in Poland in the period 1951–2006. Int. J. Climatol., DOI: 10.1002/joc.1950.
Lupikasza, E. B., S. Hansel, and J. Matschullat, 2010: Regional and seasonal variability of extreme precipitation trends in southern Poland and central-eastern Germany. Int. J. Climatol., DOI: 10.1002/joc.2229.
Mason, S. J., and A. M. Joubert, 1997: Simulated changes in extreme rainfall over Southern Africa. Int. J. Climatol., 17(3), 291–301.
____, P. Waylen, G. M. Mimmack, B. Rajaratnam, and J. M. Harrison, 1999: Changes in extreme rainfall events in South Africa. Climatic Change, 41(2), 249–257.
Nastos, P. T., and C. S. Zerefos, 2007: On extreme daily precipitation totals at Athens, Greece. Advances in Geosciences, 10, 59–66.
____, and _____, 2008: Decadal changes in extreme daily precipitation in Greece. Adv. in Geosci., 16, 55–62.
Naumann, G., M. P. Llano, and W. M. Vergas, 2010: Climatology of the annual maximum daily precipitation in the La Plata Basin. Int. J. Climatol., DOI: 10.1002/joc.2265.
Park, J. S., H. S. Kang, Y. S. Lee, and M. K. Kim, 2010: Changes in the extreme daily rainfall in South Korea. Int. J. Climatol., DOI: 10.1002/joc.2236.
Raj, P. P. N., and P. A. Azeez, 2010: Trend analysis of rainfall in Bharathapuzha River basin, Kerala, India. Int. J. Climatol., DOI: 10.1002/joc.2283.
Ravadekar, J. V., and B. Preethi, 2010: Statistical analysis of the relationship between summer monsoon precipitation extremes and foodgrain yield over India. Int. J. Climatol., DOI: 10.1002/joc.2282.
Raziei, T., A. Mofidi, J. A. Santos, and I. Bordi, 2011: Spatial patterns and regimes of daily precipitation in Iran in relation to largr-scale atmospheric circulation. Int. J. Climatol., DOI: 10.1002/joc.2347.
Roy, S. S., and J. R. C. Balling, 2004: Trends in extreme daily precipitation indices in India. Int. J. Climatol., 24(4), 457–466.
Samba, G., and D. Nganga, 2011: Rainfall variability in Congo-Brazzaville: 1932–2007. Int. J. Climatol., DOI: 10.1002/joc.2311.
Schmidli, J., and C. Frei, 2005: Trends of heavy precipitation and wet and dry spells in Switzerland during the 20th century. Int. J. Climatol., 25(6), 753–771.
Shirazi, S.A., 2006: Impacts of spatio-temporal trends and anomalies of surface air temperature over the Punjab. Geographical papers, 1(1), 22–32.
Smadi, M. M., and A. Zghol, 2006: A sudden change in rainfall characteristics in Amman, Jordan during the mid 1950s. Amer. J. Environ. Sci., 2(3), 84–91.
Svensson, C., and D. Jakob, 2002: Diurnal and seasonal characteristics of precipitation at upland site in Scotland. Int. J. Climatol., 22(5), 587–598.
Toros, H., 2011: Spatio-temporal precipitation change assessments over Turkey. Int. J. Climatol., DOI: 10.1002/joc. 2353.
Turkes, M., 1996: Spatial and temporal analysis of annual rainfall variation in Turkey. Int. J. Climatol., 16(9), 1057–1076.
Zhai, P., Zhang, X. Wan, H., and Pan, X., 2005: Trends in total precipitation and frequency of daily precipitation extremes over China. J. Climate., 18(7), 1096–1108.
Zhang, G. H., M. A. Nearing and B. Y. Liu, 2005: Potential effects of climate changes on rainfall erosivity in the Yellow river basin of China. Amer. Soc. Agric. Eng., 48(2), 511–517.
Zolina, O., C. Simmer, A. Kapala, S. Bachner, S. Guley, and H. Maechel, 2008: Seasonal dependant changes of precipitation extremes over Germany since 1950 from dense observational network, J. Geophys. Res., 113(6), 1–17.
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Hussain, M.S., Lee, S. The regional and the seasonal variability of extreme precipitation trends in Pakistan. Asia-Pacific J Atmos Sci 49, 421–441 (2013). https://doi.org/10.1007/s13143-013-0039-5
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DOI: https://doi.org/10.1007/s13143-013-0039-5