Drought Awareness over Continental United States

IF 6.3 1区地球科学 Q1 ENGINEERING, CIVIL

Journal of Hydrology Pub Date : 2024-08-26 DOI:10.1016/j.jhydrol.2024.131868

Mashrekur Rahman , Samuel Sandoval Solis , Thomas Harter , Mahmoud Saeedimoghaddam , Niv Efron , Grey S. Nearing

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Abstract

Understanding the relationship between droughts and drought awareness is vital towards decision making and policy for water management and conservation strategies, and socioeconomic outcomes. We used computer vision (UNet models) to analyze nonlinear, heterogeneous, lagged correlations between Standardized Precipitation Evapotranspiration Index (SPEI) and Google Trends Search Interest within the Continental United States (CONUS). The most important drivers of the relationship between drought occurrence and drought awareness are the variability and ranges of drought trends and severity, as well as extreme drought conditions. This relationship was the strongest for Western states, followed by Northeastern, Southeastern, and Central regions. Search interest tends to lag droughts by a period of ̃1-3 months. We also found evidence that reductionist linear approaches, such as a Principal Component Analysis, might not be as effective as UNet models in capturing the nuanced relationship between droughts and drought awareness at various dimensions and scales.

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美国大陆的干旱意识

了解干旱和干旱意识之间的关系对于水资源管理和保护战略的决策和政策以及社会经济成果至关重要。我们利用计算机视觉（UNet 模型）分析了美国大陆（CONUS）标准化降水蒸散指数（SPEI）与谷歌趋势搜索兴趣之间的非线性、异质性、滞后相关性。干旱发生与干旱意识之间关系的最重要驱动因素是干旱趋势和严重程度的变化和范围，以及极端干旱状况。这种关系在西部各州最为明显，其次是东北部、东南部和中部地区。搜索兴趣往往滞后干旱 1-3 个月。我们还发现有证据表明，还原线性方法（如主成分分析法）可能不如 UNet 模型更有效地捕捉干旱与干旱意识之间在不同维度和尺度上的细微关系。

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来源期刊

Journal of Hydrology 地学-地球科学综合

CiteScore

11.00

自引率

12.50%

发文量

1309

审稿时长

7.5 months

期刊介绍： The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.