An Observational Investigation of Spatiotemporally Contiguous Heatwaves in China From a 3D Perspective

Ming Luo, Ngar Cheung Lau, Zhen Liu, Sijia Wu, Xiaoyu Wang

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Understanding the evolution of heatwaves is important for their prediction, mitigation, and adaptation. While most studies focused on either their temporal variability at individual station (or grid point) or the spatial variation over fixed durations, their daily joint evolution over space and time remains largely unexplored. Here, we investigate multi-dimensional characteristics of spatiotemporally contiguous heatwaves across China during 1961–2018 using observational data from a 3D perspective (i.e., latitude × longitude × time). Results obtained by the 3D identification show that large contiguous heatwaves in China exhibit distinct characteristics in different geographical locations and time periods. Heatwaves in northern areas prefer to move from west to east at a faster speed, persist longer, and have greater extent and intensity than southern heatwaves, which are generally originated from the east and move westward. It is also found that contiguous heatwaves are growing in frequency, magnitude, areal extent, duration, and traveling distance across China.

Original languageEnglish (US)
Article numbere2022GL097714
JournalGeophysical Research Letters
Volume49
Issue number6
DOIs
StatePublished - Mar 28 2022

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Keywords

  • 3D structure
  • climate change
  • extreme weather and climate events
  • long-term trend
  • spatiotemporal evolution
  • spatiotemporally contiguous heatwaves

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