http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 15.23Change: -0.18
R/$ = 13.67Change: -0.14
Au 1124.65 $/ozChange: 0.55
Pt 1007.00 $/ozChange: -5.00
 
 
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?








Start
 
End
 
 
And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
 
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Letters Contact Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Oct 17, 2008

Solar activity the primary driver of global temperature rise

Back
Environment|Industrial|Water|Power
Environment|Industrial|Water|Power
environment|industrial|water|power
© Reuse this The period of global warming that we have experienced on our planet over the last century, which has seen a rise in temperature of some 0,6 oC, does not correlate at all with a rise in the concentration of atmospheric carbon dioxide (CO2), but is does correlate with solar activity. Indications are that solar activity is the primary driver of the variation in global temperature.



Even more compelling is the fact that there exists a well-documented Roman Warm period from the time of the Roman Caesars, and a Medieval Warm Period, both of which correlate with solar activity, but certainly can have nothing whatever to do with CO2 produced by any human industrial activities.

Further, earlier global warming periods were always accompanied by great human prosperity, and not by gloom and doom, as today's global warming adherents are forever saying. In fact, it was periods of global cooling that were bad for the world's population and for the environment as a whole.

In AD 793, the Vikings burst upon their European neighbours, starting with England. One venture took them into eastern Europe. There, they founded the Russian State at Kiev, in Ukraine, in 882 AD.

They also moved into France, as the Normans, and became a power in the Mediterranean as well as in Europe.

Two centuries of global warming then followed, from about 930 AD. This warm weather assisted the Vikings in taking Iceland from the Irish. The Vikings settled in Greenland and explored as far west as Newfoundland, in North America.

During this period, around 1000 AD, grain grew in northern Norway and grapes in northern England. The signs of warm-weather crops in these settlements puzzled modern archaeologists when they found evidence of these crops in what they thought had always been an iced-over region.

High in the mountains in central Europe, abandoned ancient mines were reopened when the area thawed. In what was thought of as the arid region of New Mexico, Amerindians of the Anasazi ethic group built canyon towns and irrigated crops as the climate warmed and rain became a regular feature of the area.

Rain also soaked the grasslands of Asia during the warm centuries, and nomadic horsemen thrived. This was great for the nomads but not so great for some of the other tribes in the region, who got beaten up by the nomads, who then acquired great mobility over the grasslands covered in food for the horses.

In China, a magnetic compass was invented – the earliest practical compass was described in a Chinese military manual of 1044. It was a magnetised fish shape that floated on water. Compasses soon evolved into magnets hanging on silk threads. The importance of the compass is that it allowed people to confidently sail far away from land in small ships.

Administrative reforms in China, starting in 1068, transformed the Chinese empire into the first economy managed on modern lines, relying on equitable money taxes rather than forced labour. The economy and the population boomed during the warm years, and government loans encouraged farmers to plant a new variety of rice from Indochina.

The Chinese seafarers continued to trade widely across South-East Asia and so spread their knowledge and goods, to the benefit of all.

In the meantime, in Middle America, around 1200, there was turmoil. Aztecs, from the north, entered the Valley of Mexico. They rose to power over their neighbours in about 1320.

It appears the reason why they moved and rose to power was the downturn in the climate, which began in about 1190. "Hey man, chill out" had a different meaning for them. Other sufferers from the cooling climate were the Anasazi, who were then forced, by drought, to abandon their canyon settlements. They moved to concentrate along the Rio Grande.

Starting in 1314, Europe was struck by repeated famines. The mountain mines were abandoned again, and the Vikings were frozen out of their settlements. By 1342, the Vikings' customary route to Greenland had been blocked by ice.

The Eurasian steppes became the scene of terrible military events. When the rainfall diminished from 1160, the numerous horsemen were happy for a warlord to tell them to attack the farming villages.

The break-out of the Mongols and their allies, the Turks, exceeded any previous break-out in ferocity and scope. In 1211, the Chinese Wall was breached. Baghdad, amid its decaying irrigation works, fell in 1258 to the Mongols.

A crash in the population of medieval Eurasia, already evident in China by 1290, was made worse by disease carried by the Mongol supply and trading caravans.

The Black Death first appeared among the Chinese in 1331, killing more than a quarter of them, and in 1346 a Mongol army in southern Russian spread it to Europe.

The Medieval Warm Period was past, and the Little Ice Age was really on its way.


Edited by: Martin Zhuwakinyu
Creamer Media Senior Deputy Editor
© Reuse this Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other Dr Kelvin Kemm News
The COP 21 world climate conference is scheduled to take place in Paris this December. There is much comment in the media, with a variety of people expressing the hope that the conference will be a success and that a legally binding agreement will come out of the...
Recently, with much fanfare, computer tablets were distributed to a number of schools in Gauteng.  Also supplied were electronic whiteboards for teachers. Enthusiastic people explained how much this would advance education.  I am afraid that I do not agree.  I have...
The general irresponsibility of the minibus taxi industry has to be addressed as a matter of urgency.  It is getting totally out of hand.  Two recent  made yet another impact on me. The one was a totally irresponsible action that resulted in the death of two people....
More
 
 
Latest News
Updated 2 minutes ago Redefine Properties will for the first time be included in the FTSE/JSE Top 40 index, making it one of the 40 largest listed companies in South Africa by market capitalisation.  Redefine’s inclusion in the Top 40 was announced by the Johannesburg Stock Exchange on...
Former President Thabo Mbeki
Updated 5 minutes ago Africa loses more than R50-billion every year as a result of the illicit flow of funds, former president Thabo Mbeki has said. "Africa faces the great challenge of large volumes of capital leaving the continent illicitly - money that our continent needs to address...
Updated 1 hour 20 minutes ago The piece of wing found on the shore of Reunion Island in the Indian Ocean has been formally identified as part of the wreckage of Malaysian Airlines flight MH370, the Paris prosecutor said on Thursday. The part, known as a flaperon, was found on the shore of the...
More
 
 
Recent Research Reports
Road and Rail 2015: A review of South Africa's road and rail sectors (PDF Report)
Creamer Media’s Road and Rail 2015 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail infrastructure and network, the funding and maintenance of these respective networks, and...
Defence 2015: A review of South Africa's defence sector (PDF Report)
Creamer Media’s Coal 2015 report examines South Africa’s coal industry with regards to the business environment, the key participants in the sector, local demand, export sales and coal logistics, projects being undertaken by the large and smaller participants in the...
Real Economy Year Book 2015 (PDF Report)
There are very few beacons of hope on South Africa’s economic horizon. Economic growth is weak, unemployment is rising, electricity supply is insufficient to meet demand and/or spur growth, with poor prospects for many of the commodities mined and exported. However,...
Real Economy Insight: Automotive 2015 (PDF Report)
Creamer Media’s Real Economy Year Book comprises separate reports under the banner Real Economy Insight and investigates key developments in the automotive, construction, electricity, road and rail, steel, water, gold, iron-ore and platinum sectors.
Real Economy Insight: Water 2015 (PDF Report)
Creamer Media’s Real Economy Year Book has been divided into individual reports under the banner Real Economy Insight and investigates key developments in the automotive, construction, electricity, road and rail, steel, water, coal, gold, iron-ore and platinum sectors.
Real Economy Insight: Construction 2015 (PDF Report)
Creamer Media’s Real Economy Year Book has been divided into individual reports under the banner Real Economy Insight and investigates key developments in the automotive, construction, electricity, road and rail, steel, water, coal, gold, iron-ore and platinum sectors.
 
 
 
 
 
This Week's Magazine
The Health and Welfare Sector Education and Training Authority (HWSETA) has joined forces with Tshwane North Technical, Vocational and Education and Training College (TNC) to train 100 young unemployed learners as artisans, and marked this with an event that took...
JAMES TEMPLETON The increase in distribution is as a result of Emira’s acquisitive growth
JSE-listed Emira Property Fund reported distributions per participatory interest (PI) of 134.27 c – a distribution growth of 9% – for the 12 months to June 20, 2015.
Earlier this month ground broke on South Africa’s latest four star green building – the first of its kind in the Eastern Cape. The modern three-storey office block is located within the Baywest City precinct in Port Elizabeth’s western suburbs, along the N2, and...
South African armoured and mine protected vehicles company Denel Vehicle Systems (DVS) has won its first order since becoming part of the Denel group at the end of April. "It's a sizeable contract," reports DVS CEO Johan Steyn. "We won the contract in July. It's a...
South African guided weapons, unmanned air vehicles (UAVs) and space company Denel Dynamics plans to increase its revenues to more than R2-billion within five years. This was reported by company CEO Tsepo Monaheng at its annual "Show and Tell" briefing in Centurion,...
 
 
 
 
 
 
 
 
 
Alert Close
Embed Code Close
content
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
 
 
Close
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks
Subscribe Now for $96 Close
Subscribe Now for $96