Gridded Precipitation Intensity-Duration-Frequency Curves in Qinghai-Tibet Plateau
Author Information
Author(s): Ren Zhihui, Sang Yan-Fang, Cui Peng, Chen Fei, Chen Deliang
Primary Institution: Chinese Academy of Sciences
Hypothesis
How can we accurately derive precipitation intensity-duration-frequency curves for the Qinghai-Tibet Plateau?
Conclusion
The QTPPIDFC dataset provides reliable gridded precipitation information for hydrometeorological risk management and engineering design in the Qinghai-Tibet Plateau.
Supporting Evidence
- The dataset provides precipitation information for various durations and return years.
- Principal component analysis identified a southeast-northwest spatial pattern in precipitation IDF curves.
- The random forest model was used to estimate gridded IDF curves based on geographical and climatic variables.
- The QTPPIDFC dataset can aid in hydrometeorological risk management.
- Hourly precipitation intensity ranges from 27.1 to 144.5 mm/h in 100 return years.
- Daily precipitation intensity ranges from 1.3 to 16.2 mm/h in 100 return years.
- The dataset is publicly available for further research and application.
Takeaway
This study created a dataset that helps predict heavy rain in a mountainous area, which can help keep people safe from floods.
Methodology
The study used principal component analysis and random forest regression to derive gridded precipitation IDF curves from data collected at 203 weather stations.
Potential Biases
Potential non-stationarity in some precipitation data samples may affect the results.
Limitations
The study mainly focuses on rainfall-dominated areas and does not address other natural disasters in high-altitude regions with sparse weather stations.
Participant Demographics
Data collected from 203 weather stations across the Qinghai-Tibet Plateau.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website