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| DOI | 10.1007/s00382-020-05167-9 |
| Climatology of thunderstorms; convective rainfall and dry lightning environments in Australia | |
| Dowdy A.J. | |
| 发表日期 | 2020 |
| ISSN | 0930-7575 |
| 起始页码 | 3041 |
| 结束页码 | 3052 |
| 卷号 | 54 |
| 英文摘要 | The thunderstorm climatology of Australia is examined, including convective rainfall events. Lightning observations are used to train a systematic method for indicating thunderstorm activity, with the method applied to environmental variables obtained from reanalysis data from 1979 to 2016. A range of maps showing seasonal averages in thunderstorm conditions as well as associated rainfall are presented. Long-term climate change trends are also examined, as well as the influence of large-scale drivers such as the El Niño-Southern Oscillation, Indian Ocean Dipole and Southern Annular Mode. Rainfall observations are examined for days on which thunderstorm activity is indicated based on this method, enabling new insight on convection-related rainfall. Low rainfall days are also used to examine the climatology of dry lightning as this is important for understanding the risk of wildfire ignitions. A long-term decrease in thunderstorm activity is indicated for many regions of Australia, as well as some regions of increase. The results also indicate a long-term increase in thunderstorm-related rainfall, noting implications for water availability, design standards and flood risk factors. The findings for northern Australia help provide insight on some aspects of the Australian monsoon, including based on a reduced frequency of days with convective environments as well as indicating an increased intensity of convective rainfall events. An increase in convective rainfall is indicated for both northern and southern Australia, while for non-convective rainfall the results indicate an increase in northern Australia and a decrease in southern Australia. Long-term changes in dry lightning events are also identified, depending on the region and season, noting implications for wildfire management. © 2020, Crown. |
| 英文关键词 | Bushfires; Climate; Convection; Precipitation; Thunderstorms |
| 语种 | 英语 |
| scopus关键词 | atmospheric electricity; climate change; climatology; convective system; El Nino-Southern Oscillation; Indian Ocean Dipole; lightning; monsoon; rainfall; regional climate; risk assessment; risk factor; thunderstorm; trend analysis; Australia |
| 来源期刊 | Climate Dynamics
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/145541 |
| 作者单位 | Climate Research, Bureau of Meteorology, Docklands, VIC, Australia |
| 推荐引用方式 GB/T 7714 | Dowdy A.J.. Climatology of thunderstorms; convective rainfall and dry lightning environments in Australia[J],2020,54. |
| APA | Dowdy A.J..(2020).Climatology of thunderstorms; convective rainfall and dry lightning environments in Australia.Climate Dynamics,54. |
| MLA | Dowdy A.J.."Climatology of thunderstorms; convective rainfall and dry lightning environments in Australia".Climate Dynamics 54(2020). |
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