Climate indicators: rainy days in rainy season (rdrs)

TechnicalInfo: cdo -yearsum -gec,1 RRmask.nc out.nc Other: Number of rainy days in rainy season: Let RRt be the daily precipitation amount on day t. For Rdrs count all days in one year where RRt ≥ 1mm, but only in rainy season which means rs1_ons≤t≤rs1_ces or rs2_ons≤t≤rs2_ces, for climatological rs1_ons, rs1_ces, rs2_ons, rs2_ces.