Posted March 14, 2019 05:18:53 It has been said many times that the key to achieving our long-term national interests lies in a comprehensive national climate change strategy.
But it is a strategy that is in danger of being overshadowed by a lack of a strong national climate action plan.
As we head into the next major climate change cycle, Australia is set to become the first country in the world to experience extreme rainfall, floods and droughts.
The consequences are already being felt across Australia, with some states facing unprecedented droughty conditions.
We will also see the worst of the impacts from rising sea levels, bushfires, rising temperatures and more.
This week, a new study has found that climate change is driving rising sea level in the Great Barrier Reef, affecting the health of coral reefs and threatening coastal communities.
In this story, we look at the major factors that are driving this unprecedented change.
Read more: ‘Climate change is the big story’ The impacts on the Great Barrow The Great Barrier is an iconic reef that stretches nearly 300km from Queensland to the Gold Coast, spanning the Great Depression to the Torres Strait.
It is considered the most endangered reef in the ocean, and has been on the brink of collapse for over a century.
As the Great Australian Barrier Reef has been declining in the past century, the number of coral and other coral species has declined.
A major cause for the decline is climate change.
It has warmed the oceans, led to warmer temperatures, and increased the pressure on coral and kelp to create coral bleaching.
In response, corals are dying at a rate of about 20 per cent a year.
The bleaching can occur in the water column and cause bleaching zones on the reefs.
This can also lead to bleaching on the surrounding coral and slow the regeneration of coral, which can cause it to be vulnerable to bleached coral.
The Queensland Government estimates that there are around 20,000 reefs in the state and the Reef Watch Alliance estimates there are about 1.5 million reefs in Queensland, including around 300,000 in the Southern Reefs and Great Barrier Barrier Reef.
Coral bleaching is the main cause of coral die-offs across the Great Southern Reef in Australia.
But coral bleached areas can also occur on the outer reefs.
As these areas have been bleached, there has been an increase in the bleaching in the outer sections of the reef, with the bleached reefs now leading to the collapse of some reefs.
A key issue is the level of carbon dioxide (CO2) in the seawater, which increases the pressure and temperature on corals.
As CO2 increases, the coral bleaches on the reef increases and causes it to become more vulnerable to more extreme weather events.
As corals die, the carbon dioxide in seawater increases and the bleaches increase, which then leads to more coral bleacings.
This is one of the major impacts of climate change, and a key driver of the Great Queensland Barrier Reef bleaching and reef collapse.
Coral die-off The bleached Great Barrier reef.
Source: Queensland Government / CC BY-NC-ND 2.0