How do I introduce changes in interannual or interdaily variability into my scenario?
The 30-year mean monthly GCM change fields Data Download Pages –> do not contain any information about changes in interannual or interdaily variability. Sometimes this information may be very important to include in an impact study. Changes in interannual variability can be calculated using the monthly time series GCM data. DDC Yellow Pages.–> In this case, it is suggested to calculate the ratio of the standard deviation in the future time-slice compared to the 1961-90 time-slice and then impose this ratio on the observed time series climate data (note: if you do not have observed interannual variability data available for your study, then you cannot incorporate interannual variability changes). This ratio will either inflate or deflate the observed interannual variations. To introduce GCM changes in interdaily climate variability, it is necessary to access daily GCM data. The DDC does not hold daily model data and users are directed to the individual modelling centres to gain access
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- How do I introduce changes in interannual or interdaily variability into my scenario?
