Trends in extreme temperature and rainfall indices in the semi-arid areas of Western Tigray, Ethiopia

Berhane, Abadi; Hadgu, Gebre; Worku, Walelign; Abrha, Berhanu

doi:10.1186/s40068-020-00165-6

Environmental Systems Research

Table 2 List of temperature and rainfall indices

From: Trends in extreme temperature and rainfall indices in the semi-arid areas of Western Tigray, Ethiopia

ID	Indicator name	Definition	Units
Temperature indices
TXx	Max Tmax	Monthly maximum value of daily maximum temperature	°C
TNx	Max Tmin	Monthly maximum value of daily minimum temperature	°C
TXn	Min Tmax	Monthly minimum value of daily maximum temperature	°C
TNn	Min Tmin	Monthly minimum value of daily minimum temperature	°C
TN10p	Cool nights	Percentage of days when TN < 10th percentile	Day
TX10p	Cool days	Percentage of days when TX < 10th percentile	Day
TN90p	Warm nights	Percentage of days when TN > 90th percentile	Day
TX90P	Warm days	Percentage of days when TX > 90th percentile	Day
WSDI	Warm spell duration indicator	Annual count of days with at least 6 consecutive days when TX > 90th percentile	Day
DTD	Diurnal temperature range	Monthly mean difference between the maximum and minimum temperatures	°C
CSDI	Cold spell duration indicator	Annual count of days with at least 6 consecutive days when TN < 10th percentile	Day
Rainfall indices
RX1day	Max 1-day precipitation amount	Monthly maximum 1-day precipitation	mm
RX5day	Max-5day precipitation amount	Monthly maximum consecutive 5-day precipitation	mm
R10mm	Number of heavy precipitation days	Annual count of days when PRCP = 10mm	Day
R20mm	Number of very heavy precipitation days	Annual count of days when PRCP = 20mm	Day
CDD	Consecutive dry days	Maximum number of consecutive days with RR ≥ 1 mm	Day
CWD	Consecutive wet days	Maximum number of days with RR ≥ 1 mm	Day
R95p	Very wet days	Annual total PRCP when RR > 95th percentile	Day
R99p	Extremely wet days	Annual total PRCP when RR > 99th percentile	Day
PRCPTOT	Total precipitation	Annual total PRCP in wet days (RR ≥ 1 mm)	mm

Back to article page