Category Archives: Climate Change

Message for Australia from Sir David Attenborough

The Australian Government has to think very deeply about what is important and what is not?  If only our leaders could see through Sir David Attenborough’s eyes and awaken to this emergency. Australia is going to be hard hit by climate change and we are still supporting the Adani mine, still supporting resources extraction and a disproportionate influence by the energy industry.

It takes great courage to put the future of the children ahead of short term interests.  Those who do will never be forgotten.

We need to be able to express how we feel about climate change and we need to be free to speak, free to go onto the streets, free to speak to others as we want our world to change in a direction that serves the majority of people, not industries alone.

Interestingly, Sir David speaks about slavery – the ownership of people.  I felt that even employment is a form of ownership which translates into control and a suppression of our human feeling and natural freedom.  We are nature.  We have to remember the important balance, the importance of policies that do not promote greed, growth but reform our system to be able to recalibrate with natural systems.  I sense the leaders do not know how to look out of the box we have travelled in for centuries.  We are going to need leaders who are visionaries with the knowledge to be able to recognise the importance of real sustainability rather than business economics who have no  idea of the great impact coming.  The greed becomes a barrier to real change.

David Attenborough, Cher, Chomsky and Climate Denial

The video below features a few experts commenting on the times we are moving through.  The selfishness and greed of economic narratives are the barrier to healing our planet. Yet until we look into ourselves, become very still, speak our truth and work together it is a struggle to the bottom.  What sort of world are the children going to inherit?  The lower video is David Attenborough speaking to a Parliamentary inquiry.

One of the World’s experts on the dynamics of our planet, David Attenborough.  Here is a video on climate change.  I certainly can feel the heat.  I wonder if he will get the Nobel Peace Prize for his educational work informing us about nature.  Watching this film with its brushstroke across the world from the perspective of a biologist given a deeper impression of our footprint.  I think about the butterfly effect and can see it works in nature.   When you think about self interest can you make the quantum leap to best interest?  Global temperatures have risen 0.6 degrees (average) since 1900.  David asks how can such a small increase create such havoc.  He speaks of places cooling and then refers to the Arctic warming by 3 degrees.  The environment is highly specialised and he describes the extraordinary animals living above and below the ice.  He has explained the Arctic is melting so fast that the wildlife is under threat, especially the animals at the top of the food chain, the polar bears.  As the ice melts earlier each year mothers are finding it harder to provide for cubs.


Here is a video featuring David Attenborough.  We must wake up!

My poem.


Are you top of the world,

Can you see the northern lights?

A ribbony weave waving

providing a natural display of great beauty,

Yet the ground feels unstable under my feet,

As the ice is melting,

The polar bears are starving,

As climate change is the Mount Everest of humanity

that cannot be climbed in a day,

For mountaineers are no longer adventurers with the courage

to acknowledge the peak in CO2 emissions,

As denial provides the immunity from an

inconvenient truth.


Yet the ice caps are unable to cap trade,

Humanity is unable to understand the missing links,

The feedback loops,

The wildlife pressures in search of diminishing food stocks,

As stock and trade is the human food security,

Detached from the natural economics of supply,

For we keep demanding business-as-usual,

Unconscious of the sinking ship,

In a climate of real change,

As we wait to see who ‘will be the change’

of a new future and a new earth

of awakened stewardship.


NASA: Earth Climate Changes Affect Earths Rotation

March 4, 2003 – (date of web publication)



image of the earth

Image 1

Click on image or here for animation.

Because of Earth’s dynamic climate, winds and atmospheric pressure systems experience constant change. These fluctuations may affect how our planet rotates on its axis, according to NASA-funded research that used wind and satellite data.

NASA’s Earth Science Enterprise (ESE) mission is to understand the Earth system and its response to natural and human-induced changes for better prediction of climate, weather and natural hazards, such as atmospheric changes or El Niño events that may have contributed to the affect on Earth’s rotation.


graph of angular momentum

Image 2


Changes in the atmosphere, specifically atmospheric pressure around the world, and the motions of the winds that may be related to such climate signals as El Nino are strong enough that their effect is observed in the Earth’s rotation signal, said David A. Salstein, an atmospheric scientist from Atmospheric and Environmental Research, Inc., of Lexington, Mass., who led a recent study.

From year to year, winds and air pressure patterns change, causing different forces to act on the solid Earth. During El Nino years, for example, the rotation of the Earth may slow ever so slightly because of stronger winds, increasing the length of a day by a fraction of a millisecond (thousandth of a second).

Issac Newton’s laws of motion explain how those quantities are related to the Earth’s rotation rate (leading to a change in the length of day) as well as the exact position in which the North Pole points in the heavens (known also as polar motion, or Earth wobble).

To understand the concept of angular momentum, visualize the Earth spinning in space. Given Earth’s overall mass and its rotation, it contains a certain amount of angular momentum. When an additional force acting at a distance from the Earth’s rotational axis occurs, referred to as a torque, such as changes in surface winds, or the distribution of high and low pressure patterns, especially near mountains, it can act to change the rate of the Earth’s rotation or even the direction of the rotational axis.

Because of the law of “conservation of angular momentum,” small but detectable changes in the Earth’s rotation and those in the rotation of the atmosphere are linked. The conservation of angular momentum is a law of physics that states the total angular momentum of a rotating object with no outside force remains constant regardless of changes within the system.

An example of this principle occurs when a skater pulls his or her arms inward during a spin (changing the mass distribution to one nearer the rotation axis, reducing the “moment of inertia,” and speeds up (increasing the skater’s spin); because the moment of inertia goes down, the spin rate must increase to keep the total angular momentum of the system unchanged.

The key is that the sum of the angular momentum (push) of the solid Earth plus atmosphere system must stay constant unless an outside force (torque) is applied, Salstein said. So if the atmosphere speeds up (stronger westerly winds) then the solid Earth must slow down (length-of-day increases).Also if more atmosphere moves to a lower latitude (further from the axis of rotation), and atmospheric pressure increases, it also gains angular momentum and the Earth would slow down as well.

Other motions of the atmosphere such as larger mass in one hemisphere than the other can lead to a wobble (like a washing machine with clothes off-balance) and the poles move, in accordance to the law of the conservation of angular momentum.

Salstein looked at wind and pressure measurements from a National Weather Service analysis that makes use of a combination of ground-based, aircraft, and space-based observations. The measurements for the Earth’s motions come from a variety of space-based measurements including satellites, like those in the Global Positioning System (GPS), the geodetic satellites that included records from NASA’s older LAGEOS satellite, and observations of distant astronomical objects using a technique known as Very Long Baseline Interferometry. Understanding the atmospheric pressure patterns, moreover, is essential to interpret results from NASA’s Gravity Recovery and Climate Experiment (GRACE).

The fact that the two vastly different systems, namely the meteorological and the astronomical, are in good agreement according to the conservation of angular momentum gives us assurance that both these types of measurements must be accurate. It shows, moreover, that changes in climate signals can have global implications on Earth’s overall rotation.

NASA’s ESE research focuses on the changes and variability in the Earth system, including atmospheric, oceanic, and geodetic areas. This research was recently presented at the annual meeting of the American Meteorological Society in Long Beach, Calif.