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Zhengzhou Rainfall

J Crump

Created on November 24, 2024

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Transcript

Zhengzhou, China

Area: 2,898 mi²Population: 12.6 million (2020) Annual mean temperature of 15.4 °C (59.7 °F)

"Climate change and La Niña increase the likelihood of the '7·20' Zhengzhou extraordinary typhoon-rainstorm" (2023).

"Managing Extreme Rainfall and Flooding Events: A Case Study of the 20 July 2021 Zhengzhou Flood in China" by Xiaofan Zhao et al. (2023).

Environmental Impact

Flood Season

Fighting the Problem

  • Urban flooding caused suberged subways, road destruction, displacment of residents
  • Over 300 deaths and 50 billion yuan($7.7 billion USD) in economic losses were recorded
  • The main cause of all of this is rising global temperatures that have increased atmospheric moisture
  • Zhengzhou is implementing the "Sponge City Initiative" project to improve rainwater absorption and reduce flooding by making permeable pavement, better water storage systems, and green rooftops.
  • Over 500 new flood mitigation projects are planned/underway in central China

Zhengzhou's flood season(Jul-Sep) accounts for 60-70% of Zhengzhou's total annual precipitation

+ 12% likelihood of extreme rainfall

Global Effects

  • Disrupts global supply chains
  • Puts pressure on global insurance and disaster funds
  • Increased food prices from messing up agriculture
  • Similar events happened in western Europe(Germany and Belgium) in July 2021, where extreme floods from intense rain caused over 200 deaths

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Got an idea?

Bring it to life with an interactive window

Create a new layer with all the Genially features.

  • Generate experiences with your content.
  • It’s got the Wow effect. Very Wow.
  • Make sure your audience remembers the message.
  • Activate and surprise your audience.