Mountain Journal

The country’s climate has warmed on average by 1.47C since national records began in 1910, according to the new State of the Climate report released earlier this week.

It reinforces what we already know about climate change impacts on mountain environments:

• Since the 1950s, extreme fire weather has increased and fire seasons are starting sooner and ending later. We can see the impacts of this in burnt out snow gum woodlands and alpine ash forests in a state of ecological collapse.
• Snow depth, snow cover and number of snow days have decreased in alpine regions since the late 1950s. (This decline has been known and reported on for years).

Continue reading “Climate change is driving fire and reducing snow pack” →

Overall, the world has warmed on average just a little over 1oC since the start of the industrial revolution due to human caused climate change. We can see what this has done to winter in the Australian mountains. Snow pack has been in decline since at least 1957. Winter snowfalls are becoming more erratic. Climate change is already visible at lower elevation resorts in the Australian Alps. And recent climate research suggests that the Australian Alps may suffer from a loss of snow as climate change supercharges phenomena known as ‘atmospheric rivers’. These are long, narrow regions of high moisture content in the lower atmosphere that transport most of the water vapour from the tropics to the sub-tropics and midlatitudes,

A new report from UN Climate Change shows that while countries are ‘bending the curve’ of global greenhouse gas emissions downward, that these efforts remain insufficient to limit global temperature rise to 1.5 degrees Celsius by the end of the century.

According to the report, the combined climate pledges of 193 Parties under the Paris Agreement could put the world on track for around 2.5 degrees Celsius of warming by the end of the century. That would mean the end of winters as we know them.

Continue reading ““The world is on track to hit as much as 2.8C of warming this century”” →

We know that climate changes is already impacting on the mountains we love. Longer fire seasons, longer droughts, less streamflow, warmer weather. And, of course, declining snowpack.

As we come to the end of a winter marked by classic Australian ‘Boom and Bust’ snow conditions, it is clear that we are on a trajectory towards milder winters and less snow. Snowpack has been in decline in Australia since at least the 1950s. And there are decades worth of studies, reports and media stories which make it clear what’s happening (for instance this story from The Age in 2018).

A new story published by the ABC written by Thomas Saunders reminds us yet again about what is happening in spite of bumper snowfalls in any particular winter.

Continue reading “An erratic winter reminds us about the reality of climate change” →