Tag Archive for 'climate change'

Oceans, data, and climate change: Sea Robots

Photography by Marinoc Kojdanovski, Powerhouse Museum.

Attention data nerds and science geeks, you will love this object.

This is what is known as an Argo float (I prefer the term sea robot), the picture doesn’t give you a sense of scale but the whole unit is about 6 feet tall. They are used to gather scientific data about the worlds oceans, and help in ongoing research about climate change.

To be exact there are 3000 of these floats drifting along in the worlds ocean currents measuring temperature and salinity in the upper 2000m of the ocean.

Image courtesy of Argo

They are dumped off ships into the ocean and using an internal programmable bladder system they delve down to be “parked” at pre set depth. At 10 day intervals they pop back up to the surface to transmit their data via satellite, then sink once again. They are designed to make about 150 of these cycles.

The best thing about the Argo collaboration is that all the data is available to anyone, in real time, from their website.

Image courtesy of Argo

The 3000 floats provide 100,000 temperature/salinity profiles and velocity measurements per year distributed over the global oceans.

The Argo float pictured above is currently on display in Ecologic: creating a sustainable future.

Real vs Fake: Museum objects

Photography by Geoff Friend, Powerhouse Museum

Whilst working on the new ‘Ecologic: creating a sustainable future’ exhibition, we were looking for objects to help us tell the story of climate change, and more specifically talk about the fossil record.

We searched for real fossils to put on display, and could have easily arranged some 100 million year old fossils to put behind glass in the exhibition. But no one can touch them behind the glass.

I frequently witness visitors to our museum, especially children, touching anything they can, buttons will be pushed, levers pulled, knobs turned, even if not designed to be touched.

We solved out fossil dilemma by getting casts of fossils (thanks Australian Museum!) and putting them on open display, freely touchable by visitors.

Photography by Marinco Kojdanovski, Powerhouse Museum.

I am curious as to what you think.

Would you rather.. be able see real objects that are safely locked away from your grasp….or to be able to touch replicas/fakes?

Old objects new ideas: volcanoes and climate change

Photography by Marinco Kojdanovski. Collection: Powerhouse Museum

This inconspicuous lump of rock is actually a piece of lava from Mt. Vesuvius, Italy. It is one of the Museum’s earliest collected objects, having been purchased in 1886 in New York.

It was probably no more that a curiosity back then, yet it has been incredibly valuable for us to use in discussing contemporary issues.
It is on display in the Ecologic exhibition, and used to explore some of the causes of climate change (other than anthropomorphic climate change).

Large volcanic eruptions can impact earths climate reducing the amount of solar radiation reaching the Earth’s surface, lowering temperatures in the troposphere, and changing atmospheric circulation patterns.

Of Copenhagen, cute toys and carbon sinks

Toy zebra

Designed by Kay Bojesen. Collection, Powerhouse Museum.

Thinking about the UN Climate Change Conference in Copenhagen, it struck me as fitting that we have two cute Copenhagen-made wooden toys in our carbon sinks showcase in the exhibition Ecologic: creating a sustainable future.

The toy zebra and elephant have sat there since 2001, alongside a wooden chair, a seashell, a pile of wood chips, and a huge slice of an Australian red cedar tree. We hope they encourage visitors to think about carbon sources and sinks. Addressing the issue of human-induced climate change is even more urgent now than it was when we developed the exhibition.

Toy elephant

Designed by Kay Bojesen. Collection, Powerhouse Museum.

The toys, designed by Kay Bojesen, are part of a collection donated as a bequest by kindergarten teacher and toyshop director Monica Piddington in 1970. I doubt that anyone at that time saw the toys as carbon sinks! However, making toys, houses, furniture and other treasured objects from wood is an important human contribution to sequestering carbon – but only if we truly treasure them and protect them from rotting (which would unlock the carbon in them, adding methane or carbon dioxide to the atmosphere).