There is no denying that climate change has long struck numerous areas around the world. Yet, we haven’t really come to grasp about the risks involved.
Today, the Bureau of Meteorology and the CSIRO have teamed up for the latest biannual report on the climate, and yes, the claim about Australia experiencing climate change now is affirmed. More so, the warming phenomenon is continuing.
Dejectedly, since 1910, we are now up to 1.44 degrees Celsius of warming, plus or minus 0.24C. This results in the increase of extreme heat days. Susceptibility of heat waves and fire are prevalent. We might not necessarily feel this 1.44 increase, but heat waves and the fire weather are undeniable.
The manager of the climate environmental prediction service at the Bureau stated that they are now seeing a more tangible shift in the extremes, thus greatly affecting on the extreme events. This is with confidence as science had been broadly consistent and accurate regarding the climate system for the last several decades.
On record, 2019 had the most extreme heat days. But as predicted by Dr. Jaci Brown ” this decade will be one of the coolest in the next hundred years.” How alarming.
In addition to heat days, fire conditions are worsening. Not to mention, this time last year already saw the devastating effect as swathes of the east coast were already on fire and Sydney had just faced down catastrophic fire danger.
“They are the sort of events we should treat as becoming more and more likely as warming continues.” The manager added.
Numerous parts of the country, in contrary, have welcomed change as wetter conditions are prevalent in recent months. But that does not assure a long-term trend, as southern cool season rainfall is expected to keep on degenerating.
What does this mean for our farmers? Dr. Brown emphasized “Australian farmers, for example, are very used to dealing with climate variability and coming up with clever ways to manage and adapt.” Thus, types of crops to plant and new ways to work together are deemed to be an additional necessity.
This change in climate has also affected the atmosphere negatively, as we all saw coming. We have pumped CO2 into the atmosphere; hence the oceans have acted as a sink for both CO2 and the heat.
As a result, surface waters around Australia are estimated to have had a 30 per cent increase in acidity since the 1880s. In addition, sea levels have risen by 25cm globally as a result of thermal expansion and melting of ice glaziers.
We might’ve assumed the 2020 global slowdown cause by the coronavirus pandemic has remedied the environment. However, it has not been enough to stop atmospheric concentrations of CO2 from surging. There were relative drops, yet indistinguishable from the background of variability.
Dr. Brown asserted that “It is not that simple. This is about a very long-term change.”
To date, Australia is currently under the influence of the La Niña phase of the El Niño Southern Oscillation. Typically associated with wetter-than-average conditions for all excluding south-west.