Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092999 |
Mitigating prediction error of deep learning streamflow models in large data-sparse regions with ensemble modeling and soft data | |
Dapeng Feng; Kathryn Lawson; Chaopeng Shen | |
2021-06-30 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Predicting discharge in contiguously data-scarce or ungauged regions is needed for quantifying the global hydrologic cycle. We show that prediction in ungauged regions (PUR) has major, underrecognized uncertainty and is drastically more difficult than previous problems where basins can be represented by neighboring or similar basins (known as prediction in ungauged basins, PUB). While deep neural networks demonstrated stellar performance for streamflow predictions, performance nonetheless declined for PUR, benchmarked here with a new stringent region-based holdout test on a US dataset with 671 basins. We tested approaches to reduce such errors, leveraging deep network's flexibility to integrate “soft” data such as satellite-based soil moisture product, or daily flow distributions which improved low flow simulations. A novel input-selection ensemble improved average performance and greatly reduced catastrophic failures. Despite challenges, deep networks showed stronger performance metrics for PUR than traditional hydrologic models. They appear competitive for geoscientific modeling even in data-scarce settings. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/333877 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Dapeng Feng,Kathryn Lawson,Chaopeng Shen. Mitigating prediction error of deep learning streamflow models in large data-sparse regions with ensemble modeling and soft data[J]. Geophysical Research Letters,2021. |
APA | Dapeng Feng,Kathryn Lawson,&Chaopeng Shen.(2021).Mitigating prediction error of deep learning streamflow models in large data-sparse regions with ensemble modeling and soft data.Geophysical Research Letters. |
MLA | Dapeng Feng,et al."Mitigating prediction error of deep learning streamflow models in large data-sparse regions with ensemble modeling and soft data".Geophysical Research Letters (2021). |
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