Climate Change Chart of Daegu, South Korea

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature showed a difference of +1.34 °C compared with the earlier reference period; this is an unweighted mean of the monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The clearest monthly increase was in March, where the difference was +2.65 °C. That identifies the largest monthly increase, not a uniform change across every month.

Changes in rainfall

Mean daily rainfall, rather than monthly totals, was higher on average across calendar months, with a difference of +0.45 mm/day. This unweighted comparison of monthly means does not mean that rainfall increased in every month. The largest monthly increase occurred in August, at +2.32 mm/day, while July had the largest decrease, with a difference of -0.80 mm/day. These contrasting monthly changes show why the overall mean should not be read as a description of each month.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference of -0.29 hours/day in the more recent period; this is an unweighted mean of monthly averages, not a day-weighted annual figure. The monthly pattern was not uniform: the largest increase was in July, with a difference of +0.73 hours/day, whereas the largest decrease was in April, at -1.00 hours/day. These extrema describe the strongest monthly changes, not the direction of every month's difference.

Changes in snowfall

Mean daily snowfall averaged across calendar months had a difference of -0.04 mm/day compared with the earlier reference period. This unweighted mean of monthly averages summarizes the aggregate difference and does not imply the same change in each month. The largest monthly increase occurred in March, with a difference of +0.94 mm/day; in February, the largest monthly decrease was -0.99 mm/day. These daily-mean comparisons are not monthly snowfall totals, and the small overall mean difference should not be taken to mean snowfall was absent.