# NOTE: step is startStep

alias mars.step = startStep;

alias monthlyVerificationTime = zero;
alias monthlyVerificationDate = dataDate;

# class 3 is "er" which is 15 year re-analysis (ERA15)
# Only ERA15 has time and step 
if(class != 3) {
    unalias mars.time;
    unalias mars.step;
}