Australia just had its warmest spring

November 30, 2020

Australia experienced its warmest spring, averaging 24.53 ° C (76.15 ° F), which was above the long-term average of 2.03 ° C. The season started with a record warm daily maximum և minimum temperatures in early September և ended with a strong heat wave in late November. The Australian Bureau of Meteorology (BOM) announced November 2020 as the hottest November recorded.

The map above shows the air temperature across Australia for November 30, 2020. The map is from the Goddard Earth Observing System (GEOS) model և shows the air temperature 2 meters (about 6.5 feet) from the ground. The darkest red bands are where the model shows temperatures above 40 ° C (104 ° F). The GEOS model, like all weather and climate models, uses mathematical equations that represent physical processes (such as precipitation և clouds) to make up the atmosphere. Actual measurements of physical properties, such as temperature, humidity և winds, are periodically wrapped around the model so that the modeling is as close as possible to the observed reality.

November was warm all November, then broke records during a strong heat wave on November 28-30. At least 20 ground stations in New South Wales, South Australia, Victoria and Queensland have recorded their hottest November days in three decades. Queensland’s Targominda Airport broke the November 30 record, reaching 46 ° C (114 ° F) on November 30. In Andamukua, South Australia, temperatures reached all levels of spring, reaching 48 ° C (118 ° F) in November. 28. Temperatures in Smithville reached 46.9 ° C (116 ° F) on November 28, the highest spring temperature ever recorded in New South Wales. Days passed in Sydney with temperatures above 40 ° C (104 ° F). It happened only in the city for the second time in 162 years in November.

The BOM said the heat wave was the result of hot air flowing from mid-continent to south-eastern Australia as the front systems combined with the heat of central Australia. A record number of hot night temperatures were also recorded in several places, which intensified the heat wave. The night heat prevented the areas from cooling down և lowering the average temperature. This made it easier for the temperature to rise the next day. The average night temperature in New South Wales was 1.99 ° C (3.58 ° F) above the state average – the warmest since 1914.

Spring rains were also about 8 percent lower for the country as a whole, although the anomalies fluctuated throughout the season. For example, October was wetter than usual due to the strengthening of La Niյa in the Pacific Ocean. According to BOM, La Nina usually brings colder, cloudier and wetter weather to the country. During November, conditions in La Niինa temporarily eased in the region. The BOM expects the pattern to intensify again, bringing colder temperatures and more rain for the summer.

NASA Image of the Earth Observatory by osh oshua Stevens using GEOS-5 data from NASA’s GSFC Global Modeling և Casting Office.

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