Every time a north wind blows hot air over Adelaide, some Chicken Little cries “Global Warming”. And when an El Nino predictably causes a hot year like 1998 or 2015/16, some sensation-seeking celebrity will trumpet “hottest year eevah”.
They are watching short-term weather ripples and waves and ignoring the underlying climate tide. Daily, monthly and yearly temperature records will always be equalled or broken. That is what weather does – it fluctuates.
In the medium term, Earth temperature trends are influenced by variations in solar activities as evidenced by sun-spot cycles. These variations affect solar intensity, cosmic rays, clouds and Earth temperature, causing medium-term climatic events like the Little Ice Age and the Modern Warming. There are persuasive signs that recent solar activity has peaked. So maybe we can expect cooler weather soon.
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.
Cosmic Cycles, not Carbon Dioxide, Control Climate
This cartoon may be used freely providing the author, Steve Hunter, and the source is acknowledged: www.carbon-sense.com
Those who think the political war on carbon will lower Earth’s temperature or keep climate stable need to study climate history.
Temperatures on Earth dance to a cyclic rhythm every hour, every day, every month, every season, every year, and to every beat of the sun-spot and glacial cycles.
The daily solar cycle causes continual changes in temperature for every spot on Earth. It produces the frosts at dawn, the mid-day heat and the cooling at sunset. It is regulated by rotation of the Earth.
Superimposed on the daily solar cycle is the monthly lunar cycle, driven by the orbit of the Moon around the Earth. These two cycles interact to produce variations in atmospheric pressure and tides, and currents in the oceans and the atmosphere. These are the daily weather makers. (more…)
Reprieve! The “Binding” Paris treaty now voluntary mush
But Obama still wants to send US energy use and living standards backward
By Paul Driessen and Roger Bezdek
Paris climate talks this week descended into madcap all-night negotiations, as delegates desperately tried to salvage some kind of agreement beyond empty promises to do something sometime about what President Obama insists is the gravest threat to our planet, national security and future generations.
In the end, what we apparently got out of Paris is voluntary emission caps, voluntary progress reviews, no international oversight of any voluntary progress, and voluntary contributions to the Fund.
Obligating the United States to slash its fossil fuel use, and send billions of taxpayer dollars annually to dictators, bureaucrats and crony industrialists in poor countries would be disastrous. Thank goodness it did not happen. But we are not out of the woods yet.
Dr. Roger Bezdek is an internationally recognized energy analyst and president of Management Information Services, Inc., in Washington, DC. Paul Driessen is senior policy analyst for the Committee For A Constructive Tomorrow and author of Eco-Imperialism: Green power – Black death.
Or “Droughts and Extreme Weather are Nothing New.” by Dr Bill Johnson
Outpourings of climate bulldust over recent decades have been more alarming than changes in the climate.
Drought and above-average temperatures during recent El Niño-dominated years from 2001 to 2010 were deliberately and relentlessly marketed as global-warming. Driven incestuously by WWF and its Wentworth Group; green groups; Climate Commissioners; and a bunch of pretend-institutes, superlatives flew-up every greasy-pole out through talking-heads into the community’s ear.
Australians endured an endless chatter-based marketing campaign involving the ABC, CSIRO and Bureau of Meteorology that intertwined CO2; the hot/critical decade; Murray-Darling Basin (MDB) “health”; and the carbon tax; grinding them into our national psyche. Science was reorganised with rivers of tax-payers cash enticing once-proud universities to lend brand to the cause. Every hot/cold/dry/wet day, clamouring professors popped out of disused broom-cupboards across the land, waving models and “new reports”. It was an overt scientifically-disingenuous beat-up.
The 21 st Birthday Party in Paris – It’s Time they Grew Up
Global Warming Alarmists are about to gather in Paris for the biggest climate carnival in their 21 year history – they hoped to see 25,000 official guests and 15,000 hangers on. Surely on their 21st birthday it is time they grew up and faced some adult world problems.
Any urchin on the streets of Paris today could tell buffoons like Ban Ki-moon and Barack Obama that the “biggest security threat facing the world today” is NOT a miniscule increase in atmospheric plant food, caused mainly by gentle natural global warming which has triggered minor expulsion of carbon dioxide from the oceans.
Our Prime Minister Malcolm Turnbull lives on the southern shore of Sydney Harbour, and is in a favoured position to observe the climate moods and weather of the Sydney area in the 21st Century.
However, he should be aware that a considerable database exists that scientifically documents the climate history of Sydney Harbour and adjacent beaches, mainly temperature and sea levels, at least from the arrival of the First Fleet in 1788. When Captain Philip arrived in 1788 and landed at Sydney Cove, he quickly established a weather recording framework to help him better understand what the climate trends might be in this new colony.
Over a three year period from 1788 to 1791, two officers Bradley and Dawes recorded temperatures in the fledgling colony 6 times a day. A log of this data was found in 1977 in a remote corner of the Library of the Royal Society of London, and the data were analysed and plotted by Gergis, Karoly and Allan in 2009. They compared the First Fleet data with BOM data from the Sydney Observatory for the period 1859 to 2014, using monthly averages for Tmaximum and Tminimum. A graph comparing the First Fleet data set 1788-1791 with the BOM data set 1859 to 2014 is shown below, for Tmax.
Remarkably, the First Fleet data (red circles), are almost totally coincident with the later BOM record 1859 to 2014 (green dots); the same result is seen also for average minimum temperatures, and so Malcolm could justifiably claim that in the Sydney area there has been no change in trend of maximum and minimum temperatures over 256 years.
Data from the Fort Denison tide gauge in the harbour also shows an almost stable sea level trend for 129 years from 1886 to present day. In addition, a fisherman’s hut built in 1875 along the high water mark at Long Reef, Collaroy has been photographed in 1907, 1936, 1950 and 2014; remarkably, it exists in precisely the same position now as in 1875, and Malcolm could also justifiably claim that in the Sydney northern beaches there has been no documented sea level rise for about 140 years.