• I. Ahmad Pakistan Meteorological Department, Geophysical Center, Brewery Road, Quetta., Pakistan
  • N. Sadiq Institute of Space & Planetary Astrophysics, University of Karachi, Karachi, Pakistan


Considering the vital and unequivocal seasonal importance of western disturbance, it has been analyzed for the period 1973-2007. This study is appropriate to be based on annual, monthly, regional and seasonal investigation for the mentioned period. It is found that the total annual events and days (occurred during the events) are revaluing. The said intervals are also found apprising for the northern and northern plus central parts while considering the whole country, minifying trend is found. Maximum events & days occurred in summer whilst minimum during winter in the monthly analysis. However, the total monthly days and events for different regions show peculiar relations with each other. Seasonal study reveals increasing days and events for all seasons and the highest increase is found in Monsoon season. Further annual and monthly events and days are studied separately for each month through dot plots to observe the shifting pattern of western disturbances for every month. The study is represented through trend models, box plots, dot plots, time series and bar graphs.


P. K. Das, The Monsoon, National Book

Trust, India (1996).

M. Muslehuddin, H. Mir and N. Faisal, Pak. J.

Meteorol. 2, No. 4 (2005) 91.

Sarfaraz, Pak. J. Meteorol. 4, No. 7 (2007)

N. Faisal and N Sadiq, Pak. J. Meteorol. 6,

No. 11 (2009) 51.

N. Sadiq, Astroph. Appl. Math. 1 (2009) 147.

N. Faisal and N. Sadiq, The Nucleus 49, No.

(2012) 239.

N. Sadiq, The Nucleus 49, No. 3 (2012) 231.

K. M. Shamshad, The Meteorology of

Pakistan, Royal Book Company, Karachi


J. A. Khan, The Climate of Pakistan, Rehbar

Publishers, Karachi (1993).

S. Gibilisco, Meteorology Demystified, A Self

Teaching Guide, McGraw-Hill, USA (2006).

G. B. Pant and K. R. Kumar, Climate of

South Asia, John Wiley and Sons, England


F.K. Lutgens and E. J. Tarbuck, The

Atmosphere: An Introduction to Meteorology,

th Edition, Prentice Hall, US (2010).

F. M. Q. Malik, Western Disturbances ‘A

State-of-the-Art Report’, SAARC, Pakistan





How to Cite

I. Ahmad and N. Sadiq, “SPATIO-TEMPORAL ANALYSIS OF WESTERN DISTURBANCES OVER PAKISTAN”, The Nucleus, vol. 49, no. 4, pp. 329–338, Dec. 2012.




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