Arabian Journal of Geosciences

, Volume 4, Issue 1–2, pp 291–298 | Cite as

Spectral analysis of local climatic fluctuations

  • Muhammad J. Iqbal
  • J. Quamar
  • M. A. K. Yousufzai
Original Paper
First Online:
Received:
Accepted:

Abstract

This paper employs spectral analysis to detect regular cyclical patterns or periodicities of local climate parameters of five major cities of Pakistan. Our calculations show that the temperature of all major climate stations may be affected by ENSO or QBO or Sunspot Cycles. As for the rainfall, what we find is that Pakistan summer monsoon exhibits a fairly similar bienniality with that of the Indian monsoon.

Keywords

Cyclic pattern Climate station Pakistan summer monsoon Indian monsoon Sunspot cycles 

الخلاصه:

فی هذه المجله تستعمل ترکيب الطيف فی تعلم وجوه الاجزاء الترکيب فی التعميراء و موسم البلاد الخمسة فی الباکستان، وادوار واسلوب المدورة۔حسابنا يظهر لاءن موسم محل مقام الا محابر فی مراکزهم درجة الحرارة بحسب ذيل جزوضربی و يتاثر عليهم (i) النينو التذبذب الجنوبی (ENSO) (ii) مرة کل سنتين (QBO) (iii) دورة البقع الشمسية (Sunspot Cycles)نحن نخرج مقدار المطرفی الباکستان يتعلق جوّ الموسم البرد يسبب المطروهن تنظرُنّ طريقة الحسن حولين بمقابلة رياح فی موسم الهندية۔

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Copyright information

© Saudi Society for Geosciences 2010

Authors and Affiliations

  • Muhammad J. Iqbal
    • 1
  • J. Quamar
    • 2
  • M. A. K. Yousufzai
    • 3
  1. 1.Department of MathematicsUniversity of KarachiKarachiPakistan
  2. 2.Dadabhoy Institute of Higher EducationKarachiPakistan
  3. 3.Department of Applied PhysicsUniversity of KarachiKarachiPakistan

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