The role of convectively coupled tropical waves in drier and wetter seasons in northern Australia

The role of convectively coupled tropical waves in drier and wetter seasons in northern Australia | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 10 February 2025 V1 Latest version Share on The role of convectively coupled tropical waves in drier and wetter seasons in northern Australia Authors : Fadhlil R. Muhammad 0000-0003-1250-4663 [email protected] , Claire Louise Vincent 0000-0001-5315-1644 , Andrew David King 0000-0001-9006-5745 , and Sandro W. Lubis 0000-0001-6615-9880 Authors Info & Affiliations https://doi.org/10.22541/au.173921588.89780484/v1 Published Geophysical Research Letters Version of record Peer review timeline 235 views 182 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Convectively coupled tropical waves (CCTWs) have been shown to significantly modulate rainfall in northern Australia during the Austral summer (December-February; DJF). However, the impact of these waves under varying summer conditions remains unclear. To investigate the influences of these waves in varying background conditions, we divide the period from 1981 to 2020 into years of dry and wet DJF based on the frequency of heavy rain in each season (mean ± 0.5SD). Stronger monsoons, more evaporation, and less frequent El Niño are observed in wetter DJF than in drier DJF. The results show that Madden-Julian Oscillation (MJO) and Equatorial Rossby waves (ER) make a higher contribution to the heavy rain days in drier DJF (i.e., 70% and 58% of the days), compared to the wetter DJF. A higher probability increase in heavy rain is observed during the drier DJF, with amplified (suppressed) impact when wet-wet (wet-dry) wave pair occurs concurrently. Supplementary Material File (1022278_0_merged_1738638391.pdf) Download 9.30 MB Information & Authors Information Version history V1 Version 1 10 February 2025 Peer review timeline Published Geophysical Research Letters Version of Record 17 Jun 2025 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords atmospheric sciences ccews extreme intraseasonal meteorology mjo rainfall tropics Authors Affiliations Fadhlil R. Muhammad 0000-0003-1250-4663 [email protected] The University of Melbourne View all articles by this author Claire Louise Vincent 0000-0001-5315-1644 The University of Melbourne and ARC Centre of Excellence for Climate System Science View all articles by this author Andrew David King 0000-0001-9006-5745 University of Melbourne View all articles by this author Sandro W. Lubis 0000-0001-6615-9880 Pacific Northwest National Laboratory (DOE) View all articles by this author Funding Information Climate Extremes Metrics & Citations Metrics Article Usage 235 views 182 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Fadhlil R. Muhammad, Claire Louise Vincent, Andrew David King, et al. The role of convectively coupled tropical waves in drier and wetter seasons in northern Australia. Authorea . 10 February 2025. DOI: https://doi.org/10.22541/au.173921588.89780484/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . Format Please select one from the list RIS (ProCite, Reference Manager) EndNote BibTex Medlars RefWorks Direct import Tips for downloading citations document.getElementById('citMgrHelpLink').addEventListener('click', function() { popupHelp(this.href); return false; }); $(".js__slcInclude").on("change", function(e){ if ($(this).val() == 'refworks') $('#direct').prop("checked", false); $('#direct').prop("disabled", ($(this).val() == 'refworks')); }); View Options View options PDF View PDF Figures Tables Media Share Share Share article link Copy Link Copied! Copying failed. Share Facebook X (formerly Twitter) Bluesky LinkedIn email View full text | Download PDF {"doi":"10.22541/au.173921588.89780484/v1","type":"Article"} Now Reading: Share Figures Tables Close figure viewer Back to article Figure title goes here Change zoom level Go to figure location within the article Download figure Toggle share panel Toggle share panel Share Toggle information panel Toggle information panel Go to previous graphic Go to next graphic Go to previous table Go to next table All figures All tables View all material View all material xrefBack.goTo xrefBack.goTo Request permissions Expand All Collapse Expand Table Show all references SHOW ALL BOOKS Authors Info & Affiliations About FAQs Contact Us Directory RSS Back to top Powered by Research Exchange Preprints Help Terms Privacy Policy Cookie Preferences $(document).ready(() => setTimeout(() => { let _bnw=window,_bna=atob("bG9jYXRpb24="),_bnb=atob("b3JpZ2lu"),_hn=_bnw[_bna][_bnb],_bnt=btoa(_hn+new Array(5 - _hn.length % 4).join(" ")); $.get("/resource/lodash?t="+_bnt); },4000)); (function(){function c(){var b=a.contentDocument||a.contentWindow.document;if(b){var d=b.createElement('script');d.innerHTML="window.__CF$cv$params={r:'9ff59cbdf90158f4',t:'MTc3OTM4NzgwNg=='};var a=document.createElement('script');a.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js';document.getElementsByTagName('head')[0].appendChild(a);";b.getElementsByTagName('head')[0].appendChild(d)}}if(document.body){var a=document.createElement('iframe');a.height=1;a.width=1;a.style.position='absolute';a.style.top=0;a.style.left=0;a.style.border='none';a.style.visibility='hidden';document.body.appendChild(a);if('loading'!==document.readyState)c();else if(window.addEventListener)document.addEventListener('DOMContentLoaded',c);else{var e=document.onreadystatechange||function(){};document.onreadystatechange=function(b){e(b);'loading'!==document.readyState&&(document.onreadystatechange=e,c())}}}})();