Corrigendum: Interactive influence of ENSO and IOD on contiguous heatwaves in Australia: (Environ. Res. Lett. (2022) 17 (014004) DOI: 10.1088/1748-9326/ac3e9a)

Abstract

This is a correction for 2022 Environ. Res. Lett. 17 014004, https://iopscience.iop.org/article/10.1088/1748-9326/ac3e9a

We identified an error in calculating the result shown in figure 7 of our recent letter Reddy et al (2021). The error affected the composite difference of detrended mean sea level pressure (MSLP) and geopotential height at 500 hPa (z500) between the strong El Niño (Es), strong El Niño co-occurring with strong Indian Ocean Dipole (IOD) positive (Es-Ips), strong El Niño co-occurring with moderate IOD positive (Es-Ipm), strong La Niña co-occurring with strong IOD negative (Ls-Ins) phases and neutral (El Niño– Southern Oscillation (ENSO) neutral + IOD neutral; NN) phase, respectively. This also affected the associated text in the last paragraph of subsection 3.3 of our letter. However, the main conclusions of the letter are not influenced by this error. We reproduce figure 7 using the correct data, shown below. In subsection 3.3 physical mechanisms, the last paragraph’s first two sentences are the same, and the remaining text should read as follows. ‘The Es , Es-Ips , and Es-Ipm phases show positive changes in MSLP (figures 7(a)–(c)) and z500 (figures 7(e)–(g)) whole over Australia and along its northwest over the Indian Ocean, northeast over the Pacific Ocean, and negative changes along the southeast of Australia over the Tasman. These positive and negative changes of MSLP and z500 are stronger, particularly during the Es-Ips , and Es-Ipm phases compared to the Es . The MSLP and z500 changes during the Ls-Ins phase (figures 7(d) and (h)) are opposite to those in Es , Es-Ips , and Es-Ipm. However, these differ ences during the Ls-Ins phase are only significant along the northwest of Australia over the Indian Ocean. The high-pressure circulation features observed over Australia and along its northeast, north, and northwest coasts during the Es , Es-Ips , and Es-Ipm phases are associated with abnormal subsiding motion over those regions and favours anomalously low rainfall conditions (Caiet al 2011, 2012). These high-pressure conditions with reduced rainfall promote a favourable environment for developing and amplifying heatwaves over Australia (Perkins et al 2015, Loughran et al 2019). Hence, the increased geopotential height and the anticyclonic circulation features near Australia associated with the Es , Es-Ips , and Es-Ipm phases influence the contiguous heatwaves in Australia’. In the abstract, the penultimate sentence should read as ‘During the Es , Es-IPm, and Es-IPs seasons, the large-scale physical mechanisms are characterised by anticyclonic highs over much of Australia and along its northeast, north, and northwest coasts, favouring the occurrence and intensification of heatwaves in Australia’. In the conclusions section, the middle sentence (i.e. fifth) should read as ‘These phases (Es , Es-Ips , and Es-Ipm) are associated with the anomalous highpressure circulation patterns over and around Australia (anticyclonic pressure anomaly along northeast Australia over the Pacific Ocean and northwest over the Indian Ocean), which provides the favourable environment for the heatwaves'. Show more