143477 - Influence of the MJO on daily surface air temperature over Iran_OA.pdf (6.51 MB)
Influence of the MJO on daily surface air temperature over Iran
journal contributionposted on 2023-05-20, 22:02 authored by Pourasghar, F, Oliver, ECJ, Neil HolbrookNeil Holbrook
The influence of the Madden‐Julian Oscillation (MJO) on surface air temperature over Iran is examined using daily data from meteorological stations from 1979–2015. Composites of daily surface air temperature anomalies are positive in MJO phases 1 and 8 and negative in MJO phases 3–4 with broader region positive tendencies also in MJO phases 2 and 7, and negative tendencies in MJO phases 5–6. 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.
Publication titleInternational Journal of Climatology
Department/SchoolInstitute for Marine and Antarctic Studies
PublisherJohn Wiley & Sons Ltd
Place of publicationThe Atrium, Southern Gate, Chichester, England, W Sussex, Po19 8Sq
Rights statementCopyright 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.