Australia's variable rainfall - how dry or wet can it really get?

澳大利亚的降雨量变化无常——到底有多干或多湿？

• 批准号: DP220100606
• 负责人: Dr Tessa Vance
• 金额: $ 25.54万
• 依托单位: University of Tasmania
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2022
• 资助国家: 澳大利亚
• 起止时间: 2022-10-01 至 2025-09-30
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP220100606
• 关键词: Australia; variable; rainfall; how; dry

Australia’s rainfall is extremely variable, which means existing weather records are too short to calculate the true risk posed by droughts and floods. This project aims to quantify how naturally variable the rainfall coming from the Indo-Pacific mid-latitudes is, allowing recent rainfall extremes and future projections to be assessed in a long-term context. This project expects to produce new estimates of atmospheric moisture budgets between Australia and Antarctica based on a novel, 1000-year length reconstruction of moisture-bearing southern Indian Ocean storms. This new information is critically needed by water managers so that they can properly calculate (and ultimately prepare for) the worst of Australia’s rainfall-related risks.

澳大利亚的降雨量变化极大，这意味着现有的天气记录太短，无法计算干旱和洪水造成的真正风险。该项目旨在量化来自印度-太平洋中纬度地区的降雨量的自然变化程度，从而能够在长期背景下评估近期的极端降雨量和未来的预测。该项目预计将基于对南印度洋潮湿风暴长达 1000 年的新颖重建，对澳大利亚和南极洲之间的大气湿度收支进行新的估计。水管理人员迫切需要这些新信息，以便他们能够正确计算（并最终为澳大利亚最严重的降雨相关风险做好准备）。