Index function for CW, CD, WW, WD
ECA&D defines these two-variable indices as:
VarName | OUTPUT_long_name |
---|---|
CD | Days with TG < 25th percentile of daily mean temperature and RR < 25th percentile of daily precipitation sum ("cold/dry days") |
CW | Days with TG < 25th percentile of daily mean temperature and RR > 75th percentile of daily precipitation sum ("cold/wet days") |
WD | Days with TG > 75th percentile of daily mean temperature and RR < 25th percentile of daily precipitation sum ("warm/dry days") |
WW | Days with TG > 75th percentile of daily mean temperature and RR > 75th percentile of daily precipitation sum ("warm/wet days") |
where TG is "air Temperature near the Ground ", i.e. the usual daily mean temperature tas
, and RR is daily total precipitation pr
.