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Abstract Global climate change has been shown to cause longer, more intense, and frequent heatwaves, of which anthropogenic stressors concentrated in urban areas are a critical contributor. In this study, we investigate the causal interactions during heatwaves across 520 urban sites in the U.S. combining complex network and causal analysis. The presence of regional mediators is manifest in the constructed causal networks, together with long-range teleconnections. More importantly, megacities, such as New York City and Chicago, are causally connected with most of other cities and mediate the structure of urban networks during heatwaves. We also identified a significantly positive correlation between the causality strength and the total populations in megacities. These findings corroborate the contribution of human activities e.g., anthropogenic emissions of greenhouse gases or waste heat, to urban heatwaves. The emergence of teleconnections and supernodes are informative for the prediction and adaptation to heatwaves under global climate change.
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Co-occurrence of Aquatic Heatwaves with Atmospheric Heatwaves, Low Dissolved Oxygen, and Low pH Events in Estuarine Ecosystems
- Award ID(s):
- 1832221
- PAR ID:
- 10422882
- Date Published:
- Journal Name:
- Estuaries and Coasts
- Volume:
- 45
- Issue:
- 3
- ISSN:
- 1559-2723
- Page Range / eLocation ID:
- 707 to 720
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.1007/s12237-021-01009-x
