Climate Change Chart of Bariloche, Argentina

Overview of climate changes

Changes in snowfall

Averaged across calendar months, mean daily snowfall had a difference of -0.79 mm/day compared with the earlier reference period. This unweighted mean of monthly means is not a day-weighted annual average, and it summarizes the calendar-month average rather than the change in every individual month. Monthly snowfall differences varied in direction: June had the largest decrease, with a difference of -4.23 mm/day, while the largest increase was in July, at a difference of +2.95 mm/day. These are differences in mean daily amounts, not monthly snowfall totals.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, had a difference of -0.30 hours/day compared with the earlier reference period. The figure summarizes the unweighted monthly means rather than a day-weighted annual average, and it does not imply the same difference in each month. The largest monthly decrease was in October, with a difference of -0.83 hours/day. By comparison, the largest monthly increase was in December, at a difference of +0.15 hours/day; these are the most pronounced monthly shifts in opposite directions, not evidence of a continuous trend.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.67 mm/day compared with the earlier reference period. This unweighted average of monthly means describes the overall difference across calendar months; it is not a day-weighted annual average, and the daily figures are not monthly rainfall totals. The largest monthly increase was in June, with a difference of +2.11 mm/day. In contrast, April had the largest monthly decrease, a difference of -0.18 mm/day. These monthly contrasts show that the overall mean difference does not describe the direction of change in every month.

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.15 °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, so it describes the overall difference across calendar months rather than every month individually. The largest monthly increase was in December, with a difference of +1.72 °C. This identifies the strongest monthly increase in the supplied comparison, not a continuous change between the reference periods.