If you wonder where today’s temperature fits in with the grand scheme of time on Earth since the dinosaurs were wiped out, here’s the history. We start with the whole 65 million years, then zoom in, and zoom in again to the last 12,000 from both ends of the world. What’s obvious is that in terms of homo sapiens history, things are warm now (because we’re not in an ice age). But, in terms of homo sapiens civilization, things are cooler than usual, and appear to be cooling.
There has been NO significant sea level rise in the harbour for the past 120 years, and what little there has been is about the height of a matchbox over a century.
Along the northern beaches of Sydney, at Collaroy there has been no suggestion of any sea level rise there for the past 140 years. Casual observations from Bondi Beach 1875 to the present also suggest the same benign situation.
A rush to judgement by local councils and State Governments by legislating harsh laws and building covenants along our coastlines now seems misplaced.
The falsehoods and mendacity of the IPCC and climate alarmists should be rejected out of hand, and efforts be made to ensure that science, not propaganda, defines our school curricula in matters of climate and sea levels
There was the First Atlantic Warm Period about 7750 BC
Second Atlantic Warm Period about 7000 BC
First Saharan Warm period about 5800 BC
Second Saharan Warm Period about 5000 BC
Egyptian Warm period about 3200 BC
Sumerian Warm Period about 2200 BC
Minoan Warm Period about 1200 BC
Roman Warm Period about 0 BC
Mediaeval Warm Period about 1000 AD
Modern Warm Period about 2000 AD
All the warm periods prior to the current one have been warmer (in most cases substantially warmer) than the modern warming that we are having hysterics about.
There have been five significant Little Ice Ages scattered between these warm periods.
If you can explain how man-made carbon dioxide was the temperature driver for these events please go ahead and tell me.
Until you do there are, for me, better explanations, principally the magnetic field of the sun.
Roger Dewhurst
Roger is a retired geologist who spent much of his life studying climate history written in sedimentary rocks.
Notwithstanding a data gap from 1791 to 1859, there appears to have been little or no change in the trends of monthly maximum and minimum temperatures for a period of 230 years, from 1788 to 2018, based on comparisons of two data sets—one recorded by First Fleet officer William Dawes, and one from the Bureau of Meteorology (BOM).
Gergis et al 2009, authors of a major study and compilation of the data, conclude that “Remarkably, the records appear comparable with modern day measurements taken from Sydney Observatory Hill, displaying similar daily variability, a distinct seasonal cycle and considerable inter-annual variability.”
This runs counter to the climate alarmism normally published by these authors.
Redistributing the wealth of Australia and other Western nations, under the control of the UN, to poorer countries, especially impoverished dictatorships, around the world. According to the 2030 Agenda, ‘poverty’ can only be addressed by undemocratically giving money and power to the UN.
The COP21 Paris climate change agreement, comprising SDG 13, is just one part of the 2030 Agenda. The UN version of climate change though, is about global power and money. As UNFCCC chief Christiana Figueres pointed out, the aim of the UN is tobring abouta “centralized transformation“… “one that is going to make the life of everyone on the planet very different.” Figueres continues: “global society, is moving to the point where we are going to need more and more global governance muscle… Climate change is only the first of the major, major planetary challenges that we are being given, almost as a playground… to go into that playground and exercise our global governance capacity”
Controlling lifestyles, energy use, and consumption by defining which activities are accepted by the UN as being ‘sustainable’. Only the UN can control ‘sustainability’.
Controlling education around the globe to ensure all children become activists promoting the UN sustainability agenda.
The UN 2030 agenda is completely open ended, stating no total costs, and stating no limits as far as loss of sovereignty and enforcement mechanisms are concerned.
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Water is essential for all life, and happily it is abundant on our blue watery planet.
However, salty oceans cover 70% of Earth’s surface and contain 97% of Earth’s water. Salt water is great for ocean dwellers but not directly useful for most life on land. Another 2% of Earth’s water is tied up in ice caps, glaciers and permanent snow, leaving just 1% as land-based fresh water.
To sustain life on land, we need to conserve and make good use of this rare and elusive resource.
Luckily, our sun is a powerful nuclear-powered desalinisation plant. Every day, solar energy evaporates huge quantities of fresh water from the oceans. After a stop-off in the atmosphere, most of this water vapour is soon returned to earth as dew, rain, hail and snow – this is the great water cycle. Unfortunately about 70% of this precipitation falls directly back into the oceans and some is captured in frozen wastelands.
Much of the water that falls on land is collected in gullies, creeks and rivers and driven relentlessly by gravity back to the sea by the shortest possible route. Allowing this loss to happen is poor water management. The oceans are not short of water.
Some animals and plants have evolved techniques to maximise conservation of precious fresh water.
Some Australian frogs, on finding their water holes evaporating, will inflate their stomachs with water then bury themselves in a moist mud-walled cocoon to wait for the drought to break. Water buffalo and wild pigs make mud wallows to retain water in their private mud-baths, camels carry their own water supply and beavers build lots of dams.
Some plants have also evolved water saving techniques – bottle trees and desert cacti are filled with water, thirsty humans can even get a drink from the roots and trunks of some eucalypts and many plants produce drought/fire resistant seeds.
Every such natural water conservation or drought-proofing behaviour brings benefits for all surrounding plants and animals.
People have long recognised the importance of conserving fresh water – early settlers built their homes near the best waterholes on the creek and every homestead and shed had its corrugated iron tanks. Graziers built dams and weirs to retain surface water for stock (and fence-crashing wildlife), used contour ripping and good pasture management to retain moisture in soils, and drilled bores to get underground water. And sensible rules have evolved to protect the water rights of down-stream residents.
In some snow-fed rivers like the Nile, floods are generally a reliable and predictable annual event. For millennia the Nile delivered water and silt fertiliser to the farmers on the flood plains in Lower Egypt. The massive High Aswan Dam may have done more harm than good – it certainly did great harm to the farmers and land down-stream by stealing the silt and the water that supported the productivity of farms that have fed millions since Roman times. The value of the electricity generated by the dam probably does not compensate for these losses.
But in Australia, rainfall is usually a boom and bust affair. Much fresh water is delivered to the land surface suddenly in cyclones, storms and rain depressions. But “The Wet” is always followed by “The Dry”, and droughts and floods are normal climatic events. People who fail to store some of the flood must put up with the drought.
Red Faces all round among the profiteers of doom. A wrong equation that falsely triples the tiny direct warming caused by doubling CO2 concentration has been discovered and exposed in a major peer-reviewed paper just published in the Science Bulletin of the Chinese Academy of Sciences, one of the world’s top learned journals.
A group of leading climate researchers has identified a fatal flaw in the climate models that leads them to produce triple the global warming predicted from doubling the CO2 in the air.
CO2 in the atmosphere has some warming effect on Earth’s climate, but undisputed science shows that each additional CO2 molecule we emit has less warming effect than all its predecessors already in the air.
The direct warming effect of doubling the CO2 in the air is generally agreed to be little more than 1 C°. However climate models produce exaggerated warming forecasts by assuming that strongly positive or amplifying temperature feedbacks, such as the increased capacity of warmer air to carry water vapour, a greenhouse gas. They assume that these positive feedbacks will turn 1 C° of direct warming into 3 C° of imagined catastrophe.
They model this assumed feedback with a feedback system-gain equation which is at the heart of every climate model. The equation, however, is borrowed from electronic circuitry. It is not applicable to dynamical systems such as the Earth’s atmosphere.
However, a growing body of learned papers in the climate-science journals (e.g. Lindzen & Choi, 2009, 2011; Spencer & Braswell, 2010, 2011) consider that climate feedbacks are net-negative, moderating rather than intensifying the 1 C° direct warming from a CO2 doubling. (more…)
Three centuries ago, the world ran on green power. Wood was used for heating and cooking, charcoal for smelting and smithing, wind or water-power for pumps mills and ships, and whale oil or tallow for lamps. People and soldiers walked or rode horses, and millions of horses and oxen pulled ploughs, wagons, coaches and artillery.
But smoke from open fires choked cities, forests were stripped of trees, most of the crops went to feed draft animals, and streets were littered with horse manure. For many people, life was “nasty, brutish and short”.
Then the steam engine was developed, and later the internal combustion engine, electricity and refrigeration came along. Green power was replaced by coal and oil. Carbon energy powered factories, mills, pumps, ships, trains, and smelters; and cars, trucks and tractors replaced the work-horses. The result was a green revolution – forests began to regrow and vast areas of crop-land used for horse feed were released to produce food for humans. Poverty declined and population soared.
But new environmental problems emerged. Smoke pollution from burning cheap dirty coal in millions of open fires, old boilers and smelters produced massive smog problems in cities like London and Pittsburgh.
The solution was improved technology, sensible pollution-control laws and the supply of coal gas and coal-powered electricity to the cities. The air was cleared by “Clean Coal by Wire” at the flick of a switch and “Piped Coal Energy” at the click of a gas-lighter. In some places use of hydro, geothermal and nuclear power also helped.
In recent years, however, affluent urban alarmists have declared war on the carbon dioxide produced by burning coal, oil and gas. They claim it is a pollutant and it causes dangerous global warming. (more…)
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