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Influence of the MJO on daily surface air temperature over Iran

Citation

Pourasghar, F and Oliver, ECJ and Holbrook, NJ, Influence of the MJO on daily surface air temperature over Iran, International Journal of Climatology, 41, (9) pp. 4562-4573. ISSN 0899-8418 (2021) [Refereed Article]


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Copyright Statement

Copyright 2021 Royal Meteorological Society. This is the peer reviewed version which has been published in final form at https://doi.org/10.1002/joc.7086 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

DOI: doi:10.1002/joc.7086

Abstract

The influence of the Madden‐Julian Oscillation (MJO) on surface air temperature over Iran is examined using daily data from meteorological stations from 19792015. Composites of daily surface air temperature anomalies are positive in MJO phases 1 and 8 and negative in MJO phases 34 with broader region positive tendencies also in MJO phases 2 and 7, and negative tendencies in MJO phases 56. This variability is associated with horizontal temperature advection, whereby the southerly (northward) winds act to heat and the northerly (southward) winds cool Iran, in association with the MJO. Further, we find that daily minimum surface air temperatures respond more strongly to the MJO than do daily maximum surface temperatures. These signals correspond to cloudy and humid conditions.

Item Details

Item Type:Refereed Article
Keywords:daily surface air temperature, Iran, Madden-Julian Oscillation, surface air temperature
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical oceanography
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Natural hazards
Objective Field:Climatological hazards (e.g. extreme temperatures, drought and wildfires)
UTAS Author:Oliver, ECJ (Dr Eric Oliver)
UTAS Author:Holbrook, NJ (Professor Neil Holbrook)
ID Code:143477
Year Published:2021
Web of Science® Times Cited:2
Deposited By:Oceans and Cryosphere
Deposited On:2021-03-19
Last Modified:2021-10-07
Downloads:0

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