Drought assessment of China in 2002–2017 based on a Detrended Combined Climatological Deviation Index

<p>Detrended-CCDI.zip:The monthly drought results were identified by Detrended-CCDI from April 2002 to August 2017.Detrended-CCDI was calculated using GRACE data and precipitation data after the seasonal decomposition of time series based on the Loess (STL) method.</p> <p>Drought frenquency.zip:Drought frequency is the &ldquo;n/m&rdquo; ratio per pixel. &ldquo;n&rdquo; is the number of consecutive months (more than or equal to 3 months) in which Detrended-CCDI was less than or equal to &nbsp;-0.53, and &ldquo;m&rdquo; is the total number of months in the study period.</p> <p>Drought trend.zip:Drought trend was obtained using the modified Mann-Kendall (MMK) trend test method.</p> <p>Regional drought events.zip:A regional drought event is defined when the area where Detrended-CCDI is&nbsp;less than or equal to&nbsp;&nbsp;- 0.53 exceeds 100,000 km² and the duration is more than 3 months. The severity of drought events is expressed by the average cumulative value of monthly Detrended-CCDI pixels.</p> <p>The China Flood and Drought Disaster Bulletin.zip:2002-2017 the China Flood and Drought Disaster Bulletins were&nbsp;from&nbsp;Ministry&nbsp;of&nbsp;Water&nbsp;Resources&nbsp;of&nbsp;the&nbsp;People&#39;s&nbsp;Republic&nbsp;of&nbsp;China</p>