Flash drought: Progress and prospect

In r ecent years, a new concept of dr ought called flash drought has occurred at a rapid r ate w ith a hig h deg ree of damag e and which is hard to pr edict. Wit h the outbreak of an ex tremely severe dro ug ht in the Unit ed States in 2012, the st udy of flash dr ought has been paid r emarkable at tention in the US. T he research o n flash dr ought has beg un rapidly in China and o ther co un2 tries. T his paper intr oduced the connotation of f lash dr ought and its deepening process, w hich w as dr awn2out fr om sing le heat wav e f lash dr ought to ano ther pr ecipitation deficit flash dr ought. T he exist ing metho ds of identifying and monito ring o f flash dr ought wer e summarized based on thr ee sources, such as the gr ound meteo ro log ical data, the measured and simulated soil mo is2 tur e, and the remo te sensing ana lysis and interpretat ion t echniques. Furthermore, the pro gr ess of the mechanism and spatiotem2 por al characteristics of flash dro ug ht wer e summarized and the research prospects o f flash dr ought w ere pro po sed.

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