Poleward expansion of the tropical belt derived from upper tropospheric water vapour

Qinglong You; Jinzhong Min; Shichang Kang; Nick Pepin

doi:10.1002/joc.4125

Poleward expansion of the tropical belt derived from upper tropospheric water vapour

Qinglong You, Jinzhong Min, Shichang Kang, Nick Pepin

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Abstract

Based on intersatellite-calibrated high-resolution infrared radiation sounder (HIRS) upper tropospheric water vapour (UTWV) brightness temperatures, the width of the tropical belt is defined as the distance between the latitudes at which maximum HIRS UTWV brightness temperatures are recorded in both hemispheres. Poleward expansion of the tropical belt is evident during 1979–2013 on an annual basis, with an average global magnitude of 1.57° latitude per decade. Most rapid widening is evident in the west Pacific, in agreement with the strengthening of the Walker Circulation over time. This research suggests that the HIRS UTWV brightness temperatures are a good proxy to investigate the expansion of the tropical circulation in low latitudes.

Original language	English
Pages (from-to)	2237–2242
Journal	International Journal of Climatology
Volume	35
Issue number	9
Early online date	12 Aug 2014
DOIs	https://doi.org/10.1002/joc.4125
Publication status	Published - Jul 2015

Keywords

poleward expansion
tropical belt
water vapour

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This is the peer reviewed version of the following article: You, Q., Min, J., Kang, S. and Pepin, N. (2015), Poleward expansion of the tropical belt derived from upper tropospheric water vapour. Int. J. Climatol., 35: 2237–2242., which has been published in final form at 10.1002/joc.4125. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
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http://doi.wiley.com/10.1002/joc.4125

Cite this

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title = "Poleward expansion of the tropical belt derived from upper tropospheric water vapour",

abstract = "Based on intersatellite-calibrated high-resolution infrared radiation sounder (HIRS) upper tropospheric water vapour (UTWV) brightness temperatures, the width of the tropical belt is defined as the distance between the latitudes at which maximum HIRS UTWV brightness temperatures are recorded in both hemispheres. Poleward expansion of the tropical belt is evident during 1979–2013 on an annual basis, with an average global magnitude of 1.57° latitude per decade. Most rapid widening is evident in the west Pacific, in agreement with the strengthening of the Walker Circulation over time. This research suggests that the HIRS UTWV brightness temperatures are a good proxy to investigate the expansion of the tropical circulation in low latitudes.",

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AU - You, Qinglong

AU - Min, Jinzhong

AU - Kang, Shichang

AU - Pepin, Nick

PY - 2015/7

Y1 - 2015/7

N2 - Based on intersatellite-calibrated high-resolution infrared radiation sounder (HIRS) upper tropospheric water vapour (UTWV) brightness temperatures, the width of the tropical belt is defined as the distance between the latitudes at which maximum HIRS UTWV brightness temperatures are recorded in both hemispheres. Poleward expansion of the tropical belt is evident during 1979–2013 on an annual basis, with an average global magnitude of 1.57° latitude per decade. Most rapid widening is evident in the west Pacific, in agreement with the strengthening of the Walker Circulation over time. This research suggests that the HIRS UTWV brightness temperatures are a good proxy to investigate the expansion of the tropical circulation in low latitudes.

AB - Based on intersatellite-calibrated high-resolution infrared radiation sounder (HIRS) upper tropospheric water vapour (UTWV) brightness temperatures, the width of the tropical belt is defined as the distance between the latitudes at which maximum HIRS UTWV brightness temperatures are recorded in both hemispheres. Poleward expansion of the tropical belt is evident during 1979–2013 on an annual basis, with an average global magnitude of 1.57° latitude per decade. Most rapid widening is evident in the west Pacific, in agreement with the strengthening of the Walker Circulation over time. This research suggests that the HIRS UTWV brightness temperatures are a good proxy to investigate the expansion of the tropical circulation in low latitudes.

KW - poleward expansion

KW - tropical belt

KW - water vapour

U2 - 10.1002/joc.4125

DO - 10.1002/joc.4125

M3 - Article

SN - 0899-8418

VL - 35

SP - 2237

EP - 2242

JO - International Journal of Climatology

JF - International Journal of Climatology

IS - 9

ER -

Poleward expansion of the tropical belt derived from upper tropospheric water vapour

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