Cooling in 2020 Australia
CO2 levels have continued to rise so where is the global warming?
2018 01 15 2018.0384 403.75 0.18 in situ 2018 02 15 2018.1233 403.81 0.15 in situ 2018 03 15 2018.2000 403.90 0.14 in situ 2018 04 15 2018.2849 404.16 0.17 in situ 2018 05 15 2018.3671 404.40 0.13 in situ 2018 06 15 2018.4521 404.67 0.16 in situ 2018 07 15 2018.5342 405.18 0.21 in situ 2018 08 15 2018.6192 405.65 0.13 in situ 2018 09 15 2018.7041 405.86 0.10 in situ 2018 10 15 2018.7863 405.91 0.16 in situ 2018 11 15 2018.8712 405.84 0.16 in situ 2018 12 15 2018.9534 405.75 0.13 in situ 2019 01 15 2019.0384 405.73 0.17 in situ 2019 02 15 2019.1233 405.66 0.14 in situ 2019 03 15 2019.2000 405.79 0.19 in situ 2019 04 15 2019.2849 406.20 0.17 in situ 2019 05 15 2019.3671 406.70 0.21 in situ 2019 06 15 2019.4521 407.23 0.21 in situ 2019 07 15 2019.5342 407.83 0.21 in situ 2019 08 15 2019.6192 408.33 0.16 in situ 2019 09 15 2019.7041 408.58 0.13 in situ 2019 10 15 2019.7863 408.73 0.11 in situ 2019 11 15 2019.8712 408.76 0.11 in situ 2019 12 15 2019.9534 408.52 0.17 in situ 2020 01 15 2020.0383 408.25 0.18 in situ 2020 02 15 2020.1229 408.32 0.16 in situ 2020 03 15 2020.2022 408.57 0.17 in situ 2020 04 15 2020.2869 408.80 0.13 in situ 2020 05 15 2020.3689 409.07 0.13 in situ 2020 06 15 2020.4536 409.49 0.18 in situ 2020 07 15 2020.5355 410.02 0.20 in situ 2020 08 15 2020.6202 410.47 0.16 in situ 2020 09 15 2020.7049 410.76 0.11 in situ 2020 10 15 2020.7869 410.85 0.13 in situ 2020 11 15 2020.8716 410.79 0.14 in situ
2020 saw a welcome shift to cooler and wetter conditions after the widespread drought of the past few years.
Last year's persistent drought-bringing climate, set up by a positive Indian Ocean Dipole, was replaced with neutral and eventually rain-encouraging La Niña conditions in September.
Despite a hiatus over spring, those conditions finally brought widespread rainfall to end 2020.
Many water stores have risen, but many have not filled to the extent we might have hoped for in a La Niña year … not yet.
There are still a few months of the summer wet season left.
Sydney's water stores are the big turnaround story of 2020. In January, the stores were at 44.9 per cent of capacity, their lowest point in the past five years.
Temperatures
Mean temperatures came in at 1.15 degree Celsius above the 1961-to-1990 average, well cooler than 2019, which was 1.52C above the average.
Overnight temperatures were also the fourth-highest on record using the Bureau of Meteorology's (BOM's) gridded dataset, which gives an average temperature for the country as a whole.
But maximum temperatures were less extreme than we have been accustomed to in recent years, coming in at the eighth-hottest on record, 1.24C above the 1961-to-1990 average.
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