Select a season (monthly data)
This option allows you to restrict the correlations to a specific
season. Many effects vary greatly with the seasonal cycle, and it is
rarely a good idea to combine all seasons.
In the Climate Explorer, the season is defined by a starting month
and the duration of the season. The starting month is
- all months separately, this gives 12 results, or
- a single calendar month (each January, February, ...), or
- all months together, this gives one result.
Some of these options are not supported in specific contexts.
The length of the season can be interpreted in two different ways:
- an average over the months of the season, or
- all months of the season considered separately
If there are two datasets the lengths of the seasons can be chosen
separately. Again, not all combinations make sense.
A few examples
- To compute a property of all winters in the Netherlands, set the
starting month to [December], keep the method on [averaging] and select
the length of the season as . This enters a single number for
each year, the average over December, January and February.
- To get twelve 3-month averages, change the starting month to [all]
- To study all NH winter months, set the starting month back to
[December] and change the method to [selecting]. This enters three
numbers for each year into the calculation, the values for
January, February and December.
- To compute a property of the anomalies with respect to the
seasonal cycle, put the starting month to [together], check the box anomalies
and make sure the length of the season is equal to .