The winds of change
with its refrain — The answer is blowin’ in the wind my friend, the answer is blowin’ in the wind.
In early Nov 2018, ��outhern California, which had suffered from a prolonged drought, was hit by the Devil Wind — the ��anta Ana. This violent downslope (katabatic wind) blasting through the ��anta Ana Valley often occurs in late ��pring to early ��ummer with warm and low relative humidity air.
��o why in the last year did this wind occur in November? It was because exceptionally high pressure existed inland in the great Basin and Mohave Desert while a very low pressure cyclone existed over the offshore Pacific Ocean.
Winds blow from high to low pressure air and in this case along a very steep pressure gradient. The local vegetation was bone dry and perhaps a dropped cigarette or the embers from a barbecue started a small fire, to be fanned by the violent dry ��anta Ana wind.
Over 62,000 hectares of vegetation and 13,600 houses were destroyed within a few days, resulting in an unprecedented number of deaths and unaccounted persons in California’s history.
��uch sudden downslope winds have seen raging forest fires in Portugal, ��pain and Mediterranean France in the last few years as well as wildfires burning thousands of hectares of moorland in northern England.
Australia did not escape wild fires in Nov 2018 with Queensland reaching temperatures of 40 C with 40 kilometres per hour winds fanning bushfires and causing the evacuation of 6,000 people.
At the same time, ��ydney was engulfed with torrential rain in just one day when the equivalent of the monthly average rainfall fell, resulting in flash flooding and property damage.
��imilar flash floods have been witnessed this year in both ��abah and ��arawak, with local elderly residents implying that they have not seen the likes before. ��uch wildfires and flash floods are here to stay as part of a global picture as weather patterns change and become more unpredictable. Urban pollution and health Dec 1952 saw the world’s deadliest smog, lasting for five days, shrouding London and causing the deaths of 10,000 people through respiratory problems, heart attacks and strokes.
Whilst the government declared it a natural disaster, public outcry led to the passing in Parliament of the 1956 and 1968 Clean Air Acts, banning the use of coal in major cities.
Between 2014 and 2016, worldwide, we have seen a rise in carbon dioxide levels as 40 per cent of the world’s electricity is generated at coal-fired power stations, doubling that of solar and wind power.
China, in contrast to its ever increasing self-preservation, is investing in a large number of coal-fired power stations in various African and ��outheast Asian countries.
Dirty skies, with pollution alerts, were reported in early Dec 2018, in 79 Chinese cities to include Beijing, ��hanxi, Henan, and Jiangsu.
India’s Delhi is declared the most polluted city in the world where, in the first week of last Dec, the city was smothered in toxic haze, exceeding safe limits by over 30 times. Over one million Indians prematurely die each year from the effects of atmospheric pollution.
Delhi suffers from westerly winds during the year, bringing in smoke from nearby farmers’ crop clearing fires which mixes with car and factory emissions and other manmade pollutants.
Increased urbanisation is affecting the levels of atmospheric pollution on a global scale simply because of, ironically, the greater concentrated emissions of greenhouse gases.
Interestingly, in mid-Dec 2018, research scientists at University College, London (UCL) published a report on the decline of human cognitive performances with increasing CO2 levels.
The natural level of CO2 in the air is but 273 parts per million, yet will increase by five times by 2100 through ever-increasing petrol, diesel and gas burnt emissions.
This, in turn, will lead to an everincreasing afternoon lethargy in work places, commonly known as “the sick building syndrome!”
Flash landslides
We read last year about severe flash flooding where flood drains have been unable to take the intensity of rainfall falling during thunderstorms. Roads too exhibit huge puddles of water which could lead to vehicle aquaplaning accidents.
I have noticed over the years that whilst sub-contractors regularly keep grass roadside verges under control, may be it would not be a bad idea that they collect roadside rubbish before trimming, rather than shredding plastic amongst the grass only for the bits to be blown by the wind into the nearest drains.
One school was flooded because the road drains were blocked with plastic debris. If drainage is to meet a state of equilibrium where output equals input, then flash flooding can be averted.
This problem is not peculiar to ��abah and ��arawak, for on the rural roads alongside my house in ��omerset, UK, local farmers are sub-contracted by flooding and the council to flail hedges in late Aug. The cuttings lie in the road, thus blocking drains and I find myself several times each year unblocking the drains to prevent dangerous pools of water accumulating!
All over the world last year, tremendous landslides and coastal cliff collapses occurred, costing lives and livelihoods, mainly due to the increasing frequency and intensity of heavy rainfall. This is, no doubt, due to increasing land and ocean temperatures with ever increasing evaporation rates. What goes up must come down with, especially, deforested slopes becoming oversaturated and, thus, bulging!
��outh American countries have been badly hit on steep slopes where shanty towns or favelas have been built on the edges of main cities.
The landslide on Canada Hill, Miri, several years ago, still rattles in my brain. We cannot escape the fact that climate change is not a myth but reality!
Outcome of COPT 24 confab
I wait to read the official report but I am optimistic the nearly 200 nations at that conference have all agreed to a vast reduction in our annual temperature rises, with developed nations assisting the less fortunate nations in developing alternative methods of heating and power supplies other than from coal, wood, gas, and oil, in a serious attempt to reduce greenhouse gas emissions.
Politicians must now put their rhetoric into practice today, for tomorrow will be too late. Our only home is Earth!
Bob Dylan sang it all in his protest song of the 1960’s — How many times must a man turn his head, pretending that he just doesn’t see? The answer my friend is blowin’ in the wind, the answer is blowin’ in the wind.
The winds of change of 2018 have not only seen political changes worldwide but have been dramatically illustrated in the ever changing weather patterns all around the globe.