Decadal variations of Hadley and Walker circulations in the tropics

Authors

  • B. N. GOSWAMI
  • MANU ANNA THOMAS

DOI:

https://doi.org/10.54302/mausam.v52i1.1673

Keywords:

Hadley circulation, Walker circulation, Inter-annual variability, Tropical precipitation zone, El-Nino, La-Nina

Abstract

Preliminary estimate of divergent Hadley and Walker circulation associated with inter-decadal variations in the tropics is made with   50-year reanalysis data and compared with their inter-annual counterparts. Interdecadal and inter-annual components are separated using harmonic analysis and meridional and zonal mass flux stream functions are used to calculate the strength of Hadley and Walker circulations. The magnitude of inter-decadal Hadley and Walker circulation anomalies are shown to be comparable to those associated with dominant inter-annual variations. How superposition of inter-decadal and inter-annual divergent circulations may influence regional climate is discussed.

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Published

01-01-2001

How to Cite

[1]
B. N. . GOSWAMI and M. A. . THOMAS, “Decadal variations of Hadley and Walker circulations in the tropics”, MAUSAM, vol. 52, no. 1, pp. 23–36, Jan. 2001.

Issue

Vol. 52 No. 1 (2001): MAUSAM

Section

Research Papers

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