Indices

Definition

Maximum Temperature

TMAXmean

Mean maximum temperature [˚C]

SU30

Annual count of days when TX ≥ 30˚C [days]

TX10p

Percentage of days when TX < 10th percentile [%days]

TX90p

Percentage of days when TX > 90th percentile [%days]

TXn

Annual minimum value of daily TX [˚C]

TXx

Annual maximum value of daily TX [˚C]

WSDI

Warm spell duration index – Annual count of days with at least

6 consecutive days when TX > 90th percentile [days]

Minimum Temperature

TMINmean

Mean minimum temperature [˚C]

TR20

Annual count of days when TN ≥ 20˚C [days]

TN10p

Percentage of days when TN < 10th percentile [%days]

TN90p

Percentage of days when TN > 90th percentile [%days]

TNn

Annual minimum value of daily TN [˚C]

TNx

Annual maximum value of daily TN [˚C]

CSDI

Cold spell duration index – Annual count of days with at least

6 consecutive days when TN < 10th percentile [days]

DTR

Daily temperature range [˚C]

Precipitation

PRCPTOT

Annual total precipitation [mm]

R10mm

Annual count of days when PRCP ≥ 10 mm [days]

R30mm

Annual count of days when PRCP ≥ 30 mm [days]

R95p

Annual total PRCP when daily PRCP > 95th percentile [mm]

R99p

Annual total PRCP when daily PRCP > 99th percentile [mm]

RX1day

Annual maximum 1-day precipitation [mm]

RX5day

Annual maximum consecutive 5-day precipitation [mm]

SDII

Simple precipitation intensity index – PRCPTOT/wet days [mm·day−1]

CDD

Consecutive dry days –

Maximum number of consecutive days with PRCP < 1 mm [days]

CWD

Consecutive wet days –

Maximum number of consecutive days with PRCP > 1 mm [days]