When I found that this years Blog Action Day was to be on climate change I was a little daunted.
Where do you start?
My life has been, from the time I was a small child, meshed with a conscious realisation that a peel thin atmospheric covering regulates our life on this planet.
From the early days of asthma each time the westerlies blew pollen to me, the trips with my father fishing in a small boat out wide in deep water, to my eventual study in Environmental Science in Wollongong University, it has been an envelope I have been aware of.
For over three decades I have seen the seasons unfold, and have studied ancient patterns in fields as diverse as magnetic field change and carbon dioxide levels recorded in ice.
It is with this long standing interest that I find this subject so daunting.
Ancient records will have us believe that we have been living in an almost unprecedented calm and regular period of climate for over the last 5000 years and, despite the fluctuations such as the "little Iceage" experienced over 500 years ago in Europe, things have been fairly reliable for activities such as growing crops and developing civilization, for it has been over this time that we have developed our modern age. Things haven't always been so regular.
11,000 years ago carbon dioxide levels in the atmosphere spiked. Whether they did due to the release of gases from thawing bogs at the end of the last iceage, or whether they caused the end of the last iceage is debatable. Either way, there were no factories and cars that we know of to have caused this at the time.
The sun is known to work cyclically, ranging from sunspot activity to expulsions of gas and the sun is the ultimate climate control device.
In view of the magnitude of the system we live with, is it wise to be so human centric in believing we have such great impact on this world and its climate?
The climate, in my view, is a series of waves. Conditions move back and forth, within the bounds to sustain life, like a sine wave oscillation. Our activities just change the amplitude and wavelength.
The danger is that our changes to that wave may push it too far for human life to be sustained in the way we live now.
If we vary the conditions too much we will not grow our food or get our water.
Civilization would collapse, though humanity will survive having been regulated by this vast interconnected system and made live within its rhythms.
When looking at climate change, don't worry too much about the planet- it can look after itself.
The goal is to see we live within a large system that can, and will, survive quite well without us.
Adaptability and interconnectedness , not control, should be the goals.
We are not the centre of the universe.
I am proud to be part of Blog Action Day again this year. Lets live with our planet, not try to dominate it.
Showing posts with label climate change. Show all posts
Showing posts with label climate change. Show all posts
Thursday, October 15, 2009
Thursday, February 05, 2009
Environmental Changes afoot
This post is in reply to a comment made by Denis Wilson recently, which raises the subject of shifting environmental patterns - a subject of interest to me, as I have moved to a new set of climatic conditions of late.
The section of his comment bearing relevance to this post is:
"........Its still dry in Robbo (well, mists, but no rain. Hillsides around Roboo have gone brown, would you believe it?
So too dry for much fungal activity here. You must have caught some local thunderstorm activity. Dry to the south (Victoria) and to the north. Interesting." Denis Wilson
I feel it is very interesting also.
Please look at the map provided below.
It comes from the D.T. Brown seed company (hey,I'm using their image..A free add for their seeds is no problem).
Look at the climatic "interchange" on the NSW / Vict East coast ( purple/blue).
It is my belief that this interchange existed, some 30 years ago, around Wollongong.
I believe it to exist around Batemans Bay at the present time.
This interchange does not rely on geographic situations to manifest itself, it relies on weather patterns involving subtleties including, though not limited to, ice sheet sizes in Antarctica and coastal water temperatures.
One important piece of evidence to support this idea, of a shifted interchange, is the spectacular event known as a "Southerly Buster" - a wave of cloud, moving at incredible speeds from South to North, bringing cool air and relief from high temperatures.
It has been 30 years since I have seen a good one in the Wollongong area...whereas, in my new location south of Batemans bay, I have seen 2 good ones in a 6 month period and a handful of smaller events.
Another event sadly missing north of me is the afternoon thunder storm.
As a child in Wollongong you could expect that a huge, though short lived, thunderstorm would give a cooling end to a hot sunny day...not as regular any more, though still a regular event down south.
Why do I believe this interchange to be situated around Batemans Bay?
Move south of there and early summer can be raging NE winds...not so further north.
Observed cloud patterns on BOM showing interchange events.
Temp differences noticeable North and south of that area.
I would even suggest that rainfall in the Batemans Bay area, on average, has decreased less over the last 30 years in relation to areas further north, keeping in mind that rainfall has been decreasing statewide for many years.
There is a red section on the map (in SA and WA)..this is a different climatic condition again.
I believe it to have spread across southern Victoria providing the hotter, drier conditions experienced there of late.
So, what does it all mean?
Climatic changes and less stability within those climates.
Adapt or perish cry the evolutionists.
Sadly much will perish.
New environments are being created all over the world within lifetimes.
With new climatic conditions must come new solutions.
Oh to live in interesting times.
UPDATE (16.02.09):
Recently Robertson, and surrounding areas got some rain (see Post by Denis Wilson)
I was able to monitor this activity, courtesy of the BOM website located here.
I have included a few shots, taken over nearly a 3 hour period, of the storm.
I found it interesting that the activity was limited to a little north of Batemans Bay and that the storm remained basically stationary during that time.
Also look at the way the storm moved at its South Western end.
It seems that an air flow drove the storm, at that point, to the east while the rest of the storm remained stationary. This looks to me like a classic "eddy" with a flow of air to the south, around Batemans Bay, helping to contain the storm within the area.
I would suggest that a similar situation existed above the storm north of Port Macquarie.
Credit, and thanks, to the BOM for the following shots.
I will monitor this area for the proposed interchange event I have suggested and make additions to this post as material supporting this theory presents itself.
The section of his comment bearing relevance to this post is:
"........Its still dry in Robbo (well, mists, but no rain. Hillsides around Roboo have gone brown, would you believe it?
So too dry for much fungal activity here. You must have caught some local thunderstorm activity. Dry to the south (Victoria) and to the north. Interesting." Denis Wilson
I feel it is very interesting also.
Please look at the map provided below.
It comes from the D.T. Brown seed company (hey,I'm using their image..A free add for their seeds is no problem).
Look at the climatic "interchange" on the NSW / Vict East coast ( purple/blue).
It is my belief that this interchange existed, some 30 years ago, around Wollongong.
I believe it to exist around Batemans Bay at the present time.
This interchange does not rely on geographic situations to manifest itself, it relies on weather patterns involving subtleties including, though not limited to, ice sheet sizes in Antarctica and coastal water temperatures.
One important piece of evidence to support this idea, of a shifted interchange, is the spectacular event known as a "Southerly Buster" - a wave of cloud, moving at incredible speeds from South to North, bringing cool air and relief from high temperatures.
It has been 30 years since I have seen a good one in the Wollongong area...whereas, in my new location south of Batemans bay, I have seen 2 good ones in a 6 month period and a handful of smaller events.
Another event sadly missing north of me is the afternoon thunder storm.
As a child in Wollongong you could expect that a huge, though short lived, thunderstorm would give a cooling end to a hot sunny day...not as regular any more, though still a regular event down south.
Why do I believe this interchange to be situated around Batemans Bay?
Move south of there and early summer can be raging NE winds...not so further north.
Observed cloud patterns on BOM showing interchange events.
Temp differences noticeable North and south of that area.
I would even suggest that rainfall in the Batemans Bay area, on average, has decreased less over the last 30 years in relation to areas further north, keeping in mind that rainfall has been decreasing statewide for many years.
There is a red section on the map (in SA and WA)..this is a different climatic condition again.
I believe it to have spread across southern Victoria providing the hotter, drier conditions experienced there of late.
So, what does it all mean?
Climatic changes and less stability within those climates.
Adapt or perish cry the evolutionists.
Sadly much will perish.
New environments are being created all over the world within lifetimes.
With new climatic conditions must come new solutions.
Oh to live in interesting times.
UPDATE (16.02.09):
Recently Robertson, and surrounding areas got some rain (see Post by Denis Wilson)
I was able to monitor this activity, courtesy of the BOM website located here.
I have included a few shots, taken over nearly a 3 hour period, of the storm.
I found it interesting that the activity was limited to a little north of Batemans Bay and that the storm remained basically stationary during that time.
Also look at the way the storm moved at its South Western end.
It seems that an air flow drove the storm, at that point, to the east while the rest of the storm remained stationary. This looks to me like a classic "eddy" with a flow of air to the south, around Batemans Bay, helping to contain the storm within the area.
I would suggest that a similar situation existed above the storm north of Port Macquarie.
Credit, and thanks, to the BOM for the following shots.
I will monitor this area for the proposed interchange event I have suggested and make additions to this post as material supporting this theory presents itself.
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