The maps and graphs included in the monthly summaries are based on anomalies relative to
the climatological averaging period 1981 - 2010.
Not exact matches
The SST trace shows that, on
average, temperatures around Caribbean reefs exceeded
climatological values by close to 1 °C for a
period of more than four months.
Whatever baseline
period is adopted, it is important to acknowledge that there are differences between
climatological averages based on century - long data (e.g., Legates and Wilmott, 1990) and those based on sub-periods.
So, for example, HadCRU and GISS each provide a
climatological datum of mean global temperature for a single year and present it as a difference (i.e. an anomaly) from the
average mean global temperature of a 30 year
period.
The normal
period of the heating degree days has been changed to the
averages of the
climatological normal
period of 1981 - 2010 and the coefficients has been calculated to be equivalent to the new normal
period.
1981 — 2010 is the latest 30 - year reference
period defined by the WMO for calculating
climatological averages.
The process for calculating temperature
averages over a region starts with calculating, at each location, the difference in each time
period (day, month, year) between the temperature at a location and that location's
climatological average for a standard 1961 — 1990 reference
period.
Climatological averages computed over the
period 1981 — 2010.