Spatiotemporal distribution of GNSS-derived PWV in Australia from 2010 to 2019
The weather in Australia is significantly influenced by water vapor evaporated from warm ocean surfaces, which is closely associated with various extreme weather events in the region, such as floods, droughts, and bushfires. This study utilizes Precipitable Water Vapor (PWV) data from 15 Global Navi...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-07-01
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| Series: | Geodesy and Geodynamics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984725000060 |
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| Summary: | The weather in Australia is significantly influenced by water vapor evaporated from warm ocean surfaces, which is closely associated with various extreme weather events in the region, such as floods, droughts, and bushfires. This study utilizes Precipitable Water Vapor (PWV) data from 15 Global Navigation Satellite System (GNSS) stations spanning 2010 to 2019 to investigate the spatiotemporal distribution of atmospheric water vapor across Australia, aiming to improve the accuracy of forecasting hazardous weather events. The results indicate distinct regional features in the spatial distribution of PWV. PWV gradually decreases from coastal areas toward inland regions and increases from south to north. Temporally, the overall trend of PWV remains consistent. From an annual trend perspective, most areas exhibit a decline in PWV content, with the exception of the southwestern coastal region, which shows an increasing trend. Furthermore, the study explores the correlations between PWV content and elevation, latitude, and longitude. Among these, latitude demonstrates the strongest correlation with PWV, with a correlation coefficient as high as 0.88, highlighting the significant impact of latitude on water vapor distribution. |
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| ISSN: | 1674-9847 |