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Queensland weather patterns during the Australian summer monsoon and the El Niño-Southern Oscillation
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
2013 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The objective of this study is to describe the effects of the El Niño-Southern Oscillation (ENSO) on the weather patterns in Queensland during the Australian summer monsoon. The focus is on the period from October-January when the summer monsoon is governing the weather pattern of Northern Australia. The theory part introduces the reader to the physics of the different phases of ENSO and the Australian summer monsoon. Weather station data of rainfall, minimum and maximum temperature data are investigated statistically. The presented results are an earlier onset of the monsoon season in Queensland during La Niña-events and a stronger monsoon in the sense of more or stronger active periods. Regarding El Niño's effects on the summer monsoon in Queensland no significant results were found. The results show the importance of not looking at the warm and cold phase of ENSO as opposites and agree with what Sarachik (2010) and Sturman & Tapper (1996) states.

Abstract [sv]

Målet med studien är att beskriva El Niño-Southern Oscillations (ENSO) effekter på vädret i Queensland under den australiensiska sommarmonsunen. Fokus ligger på perioden oktober-januari då sommarmonsunen styr vädret över norra Australien. Teoridelen syftar till att introducera läsaren till fysiken bakom de olika faserna av ENSO och den australiensiska sommarmonsunen. Data från väderstationer i Queensland av parametrarna nederbörd, minimum och maximum temperatur undersöks statistiskt. Resultaten som presenteras indikerar en tidigare början av monsunsäsongen i Queensland under La Niña-perioder och att monsunen förstärks genom fler eller starkare aktiva perioder. I resultaten sågs ingen eller mycket svag påverkan från El Niño-perioder på monsunen i Queensland. Dessa resultat påvisar vikten av att inte se på den varma och kalla fasen av ENSO som motsatser till varandra och stämmer överens med litteratur av Sarachik (2010) och Sturman & Tapper (1996).

Place, publisher, year, edition, pages
2013.
Series
Självständigt arbete vid Institutionen för geovetenskaper, 63
Keyword [en]
ENSO, El Niño, La Niña, summer monsoon, Walker circulation, Queensland, Australia, Coral Sea
Keyword [sv]
ENSO, El Niño, La Niña, sommarmonsun, Walker cirkulationen, Queensland, Australien, Coral Sea
National Category
Meteorology and Atmospheric Sciences
Identifiers
URN: urn:nbn:se:uu:diva-203499OAI: oai:DiVA.org:uu-203499DiVA: diva2:636897
Educational program
Bachelor Programme in Physics
Supervisors
Examiners
Available from: 2013-08-02 Created: 2013-07-14 Last updated: 2013-08-02Bibliographically approved

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Bachelor's thesis Jalle Hiltunen(2973 kB)384 downloads
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