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Table 1

Descriptions of the selected 10 EPIs and abbreviation in this study

TypeAbbreviation of indicesDefinition
EPI RX1day (mm) Annual maximum 1-day Pr 
RX5day (mm) Annual maximum consecutive 5-day Pr 
R10 (days) Count of days for Pr ≥ 10 mm 
R20 (days) Count of days for Pr ≥ 20 mm 
CWD (days) Maximum consecutive day number for Pr ≥ 1 mm 
CDD (days) Maximum number of consecutive days when Pr < 1 mm 
R95p (mm) Annual total Pr from days >95th percentile 
R99p (mm) Total Pr from days >99th percentile 
SDII (mm day−1The ratio of total Pr to wet-day number (≥1 mm) 
PRCPTOT (mm) Total Pr from days ≥1 mm 
Other abbreviation Pr Precipitation 
EPI EPI 
NDVI NDVI 
AO The Arctic Oscillation 
PDO The Pacific Decadal Oscillation 
TypeAbbreviation of indicesDefinition
EPI RX1day (mm) Annual maximum 1-day Pr 
RX5day (mm) Annual maximum consecutive 5-day Pr 
R10 (days) Count of days for Pr ≥ 10 mm 
R20 (days) Count of days for Pr ≥ 20 mm 
CWD (days) Maximum consecutive day number for Pr ≥ 1 mm 
CDD (days) Maximum number of consecutive days when Pr < 1 mm 
R95p (mm) Annual total Pr from days >95th percentile 
R99p (mm) Total Pr from days >99th percentile 
SDII (mm day−1The ratio of total Pr to wet-day number (≥1 mm) 
PRCPTOT (mm) Total Pr from days ≥1 mm 
Other abbreviation Pr Precipitation 
EPI EPI 
NDVI NDVI 
AO The Arctic Oscillation 
PDO The Pacific Decadal Oscillation 
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