Trends in annual maximum and minimum temperature data in New South Wales, Australia

This study examines trends in annual maximum temperature (AMaxT) and annual minimum temperature (AMinT) data at six stations in NSW. This adopts the Mann-Kendall trend test at 10%, 5% and 1% significance levels. The data period covers 51 years (1968 to 2018). A positive (increasing) trend in AMaxT data is identified for all the six stations at 10% significance level. The trend is insignificant at 1% significance level. For 5% significance level, only two stations show significant trend. January is found to be the hottest month, followed by December and February. Some stations show the highest annual temperature in October (early) summer). Further study aims at including a large number of stations to examine temporal and spatial changes in Australian temperature by developing temperature-duration-frequency curves.