The climatology of the GBR temperature loggers is based on the hourly registers from loggers with 10 or more years of data, up to 2012 and for "Slope" and "Flat" locations on the reef.
The climatology is important as a reference point for comparison of future values. It also allows to compute the anomalies which represent the deviations from an established baseline. The data comes from the AIMS temperature loggers program and contains temperature registers as old as from 1991, providing for some sites, a time series of water temperature for more that 28 years.
The temperature values, normally at 10 minutes interval, are averaged to the hour and the timestamp set to the beginning of the hour. Only good data is used (QC flags 1 and 2) for the calculations. The hourly records are summarised in daily values according to the day-of-the year. The climatology file consist in a csv file (comma separated) with the following variables:
Variable, Description, Possible values
Yday, Day of the year, 1-366
Temp.dmm, Average temperature for the day in °C, 19.4 - 30.7
Temp.dmax, Maximum temperature for the day in °C, 19.4 – 34.4
Temp.dmin, Minimum temperature for the day in °C, 17.1 – 29.9
Temp.dsd, Standard deviation of the daily temperature values in °C, 0.001 – 2.165
Temp.mad, Median absolute deviation of the daily temperature values in °C, 0 – 2.73
Temp.q003, 0.003 quantile of the daily temperature values in °C, 18.49 – 30.18
Temp.q01, 0.01 quantile of the daily temperature values in °C, 18.73 – 30.18
Temp.q10, 0.10 quantile of the daily temperature values in °C, 19.29 – 30.18
Temp.q32, 0.32 quantile of the daily temperature values in °C, 19.40 – 30.36
Temp.q50, 0.50 quantile (the median) of the daily temperature values in °C, 19.40 – 30.57
Temp.q68, 0.68 quantile of the daily temperature values in °C, 19.40 – 30.92
Temp.q90, 0.90 quantile of the daily temperature values in °C, 19.40 – 32.06
Temp.q99, 0.99 quantile of the daily temperature values in °C, 19.40 – 32.58
Temp.q997, 0.997 quantile of the daily temperature values in °C, 19.40 – 32.69
For each of the sites/location a plot of the climatology is also provided in png format.
