@BeginModule
@NewPage
@Name      = EcaCdd
@Title     = Consecutive dry days index per time period
@Section   = ECA indices
@Class     = ECA index
@Arguments = ifile ofile
@Operators = eca_cdd

@BeginDescription
Let @file{ifile} be a time series of daily precipitation amounts RR,
then counted is the largest number of consecutive days where
RR is less than 1 mm. A further output variable is the number of dry
periods of more than 5 days.
The date information for a time step in @file{ofile} is the date of
the last contributing time step in @file{ifile}.
@EndDescription
@EndModule


@BeginOperator_eca_cdd
@Title     = Consecutive dry days index per time period
@EndOperator


@BeginExample
To get the largest number of consecutive dry days for a time series
of daily precipitation amounts, use:
@BeginVerbatim
   cdo eca_cdd rrfile ofile
@EndVerbatim
@EndExample
