Climate Change in Margaret River

This little dissertation is a response to an invitation to:  Get involved to find out more about the role you can play in helping our community reduce carbon emissions, including: What is already happening on both a global and local scale to reduce carbon emissions and secure a climate resilient future. The economic, social and environmental outcomes in the Shire, if we do nothing and the development of local solutions and clear pathways for everyone to take action.

Dismaying.

The entire southern hemisphere has not warmed in the month of January for the last three decades. That’s conclusive. Either the back- radiation effect is operational, or it is not.  The supposed greenhouse effect can’t take a holiday in January over an area as large as half the entire globe.

There is little that one can do to combat the ‘carbon pollution’ delusion that is constantly reinforced in the media. Evidence to the contrary is rejected out of hand, like water off a duck’s back. The media considers that anyone who wants to put a contrary point of view is a ‘nutter’, anti-science and anti-consensus. So, the tendency, and my normal response, is simply let the matter slide.

However, the people promoting this local initiative should at least be aware of what has happened to climate locally. The Cape Leeuwin lighthouse is situated on a promontory jutting out into the junction of the Indian and Southern Oceans at latitude 34° south.  Few locations on the globe have 120 years of daily observations from a site relatively unaffected by urban warming and land clearing. Cape Leeuwin is such a site. Each day, the maximum and the minimum temperature is recorded.

Data for Cape Leeuwin comes from: http://www.bom.gov.au/climate/data/ . For an overview I have broken the data up into decades starting with 1897-1906. Since the concern is that the climate is warming, I will begin by examining the average daily maximum temperature.

The average daily Maximum temperature at Cape Leeuwin

Max T table

The warmest and coolest months are picked out in different colours. Broadly speaking, the decadal average of maximum temperatures declined till the 1930s and increased thereafter, except for the months of December and January where the warmest decade was a hundred years ago in 1907-16. Furthermore, the February maximum in the last decade is only 0.19°C more than in 1907-16. The mooted greenhouse effect, supposedly due to carbon dioxide, is not evident in daily maximum temperatures in December, January and February at Cape Leeuwin. February is the warmest month. No need to take action here.

If we are concerned with the welfare of succeeding generations, we should bear in mind that the average daily maximum temperature at Cape Leeuwin, at 23° C, is not that favorable to photosynthesis, upon which all life depends. From that standpoint the daily mean temperature should be about 25°C and the daily maximum about 30°C.

Winter Max

          Figure 1

Figure 1 shows that with the passage of a century the winter daily maxima are from half to one degree warmer, according to the month of the year, with the greatest increase in June. From a photosynthetic point of view this should be a matter for congratulation rather than concern. We know that grass grows poorly in the cold months.

Is there reason to think that the average daily maximum temperature is being forced in one direction or another due to the works of man?

Scope of change

Figure 2

In figure 2 The blue line records the difference between the warmest and the coolest decade.  The difference is between 1 and 2°C depending on the month of the year.  One might ask, does 2°C represent the carbon pollution effect?  Is it 1°C? Is it just zero? Or has carbon pollution caused temperatures to fall in December and January?

The yellow line shows the temperature increase that occurred over the century to 2006. The increase over the century is less than the difference between the warmest and coolest decade. Given that relationship, it’s very likely that all the change that has taken place is just natural variation.

So, in terms of maximum temperatures, in Margaret River, in either summer or winter, there is simply nothing to be concerned about. Summer is not warming. Winter is warming and that’s good.

The bias towards warming in winter, particularly in June, July and August is curious. As I explain below, there is a good reason for winter warming.

The average daily minimum temperature at Cape Leeuwin

Cape Leeuwin av Daily Min

Broadly speaking the monthly minimum daily temperature fell over half the period and then rose to reach a peak in the last decade in every month but May, that reached its peak a decade earlier. In spite of the high temperatures of the last decade this pattern of change doesn’t align with greenhouse theory.  The carbon dioxide content of the atmosphere has been steadily increasing for more than 100 years. Cooling in the middle of the 100 year period is not what would be expected.

Summer Min

        Figure 3

Min winter

           Figure 4

Figures 3 and 4 reveal that the progression in the minimum temperature is different between summer and winter.

But hang on. There is an unusually steep increase in both the daily minimum and maximum temperature in the last decade. This might be a cause for alarm.  Alarmists will point out that these years are among the top five or ten warmest years for the period of record, and rightly so. Some might even claim these are tipping points with runaway global warming to be expected next week or next year. So, I am going to investigate this  in some detail.

Why Winter

I noted above that, within a season, be it summer or winter, the timing of the advance and decline in temperature is different from one month to the next.  This complexity is due to constant flux in the forces that govern the planetary winds. A wind blowing from the equator is warm and moist, while a wind blowing from high latitudes is cold and dry. Your mother probably told you this when you were very young.

Wind blows from areas where surface pressure is high to areas where pressure is low. Surface pressure changes from month to month, and century to century. This is due to the ever-evolving exchange of atmospheric mass between high latitudes and the rest of the globe. This is most forceful in the winter season. Furthermore, the exchange of atmospheric mass is very much stronger in the southern than the northern hemisphere. At 50-60° south latitude, on the seaward margins of Antarctica, a necklace of polar cyclones has been intensifying and driving down surface pressure for more than seventy years, in fact for as long surface pressure records are available. These cyclones are most intense in September and October, driving surface pressure on the margins of Antarctica to its annual minimum in September and October, the months that we experience extreme wind speeds in the southern states of Australia. Neither your mother or the climate scientists of the IPCC will tell you this because they haven’t noticed it yet.

As surface pressure falls in and about Antarctica it rises at 15-40° south latitude via the simple exchange of atmospheric mass. This is the latitude where high pressure cells bring cloud free skies and warm sunny weather. This combination of increasing pressure in warm locations and falling pressure in cold locations intensifies the southerly flow of warm air increasing surface temperature across the mid latitudes, including Cape Leeuwin.

There are parts of the southern hemisphere where high pressure cells tend to be particularly strong, especially over the oceans to the west of the continents. But the  relative strength of these cells changes over time giving rise to what climatologists recognize as the ‘Southern Oscillation’ and “The Indian Ocean Dipole’. This adds a complication so its a bit more difficult to work out which one of these high pressure regions is active at any particular time, especially if you have your attention focused on just one of them

Look now at the following graphs that show temperatures at Cape Leeuwin in the period 1976 to 2018. There is a major disturbance after 1998. Such a disturbance, lasting years, is not unusual. We can see that another disturbance occurred in the month of October between 1980 and 1985.

Max Sep and Oct

   Figure 5

In figure 5 the disturbance can be seen to begin about the turn of the century. Notice the amplitude of the disturbance. It’s  gyrations are greater in September than October.

Max Jan Feb

       Figure 6

Figure 6 shows that the disturbance is also evident in January and February but the crazy gyration in a single month’s temperature from year to year is less than September. The curve is smoother but the increase is greater. Note that the maximum temperature fell to about 23° C in the most recent years, less than the long -term average. There has been a marked cooling in summer temperature in Margaret River since 2012. Grape growers have noticed this.

Av Max

Figure 7

Figure 7 shows that the disturbance also shows up in the Annual average of temperatures from January through to December. This data exhibits a step up in the minimum temperature after 1994 but because its annual data we cant tell whether it’s happening in summer or winter.  Because it’s the minimum temperature we know it’s usually the temperature just after dawn.

Av Ann Min

  Figure 8

Figure 8 shows the same disturbance from the turn of the century is apparent in the average of the daily maximum temperature across all months but there is no step up in the maximum in 1984. So, the step up affects the minimum temperature and not the daytime maximum.

Rainfall first half

Figure 9

Figure 9 shows that the disturbance in the monthly temperature after the turn of the century was accompanied by a 25% reduction in rainfall in the April/May/June period. This decline began about 1988 and is most severe about 2007 after which rainfall has staged a partial recovery.

Summer rainfall

Figure 10

Figure 10 indicates that the decline in rainfall in the last half of the year happened after 1998. The decline is evident in July August and September, and also in the spring months of October, November and December. The decline is more obvious because it comes after a run of good years between 1972 and 1997 where rainfall was above average and, except for one very wet period, similar in amount every year.

In the last five years rainfall is almost back to the long-term average. It’s similar to the years 1907 to 1922.

Temperature change in the last 11 years at Cape Leeuwin

Max 5 yr

Figure 11

Min last five years

Figure 12

The five-year period from 2009-13 were some of the warmest months on record. The succeeding five years from 2014-18 have seen a steep fall in daily maximum temperatures. The 2019 growing season has been a nightmarishly cool for grape growers with the added disadvantage of rain in the ripening period. Along with low yields there has been extensive rot.

The cooling has occurred between December and March. People in the Cape to Cape region have noticed the change and are asking: Where have our summers gone? We used to be swimming at this time of the year. It’s been so cool. Evenings are too cold to sit outside. Where is the barbecues weather? A cold southerly seems to set in about 5 O’clock in the evening. We were set to go swimming but it’s now too cold.

Is there a possibility that this cooling trend will continue?

The Bureau of meteorology provides graphs that puts these recent years in perspective.

Bureau 1
Bureau 2
Bureau 3

A dispassionate observer, looking at this data might observe that temperatures oscillate in the short and the long term. The longest-term oscillation appears to be longer than the number of years for which we have data.

Now we look at data for the average daily minimum temperature.

Bureau 4
Bureau 5
Bureau 6

When I look at the daily minimum, I see a gradual warming. There is a definite upwards trend that is steeper as the summer wears on. We must be aware that the increase in surface pressure over time has reduced cloud cover and allowed more solar radiation to reach the ocean. I see this as part of a natural process. Its natural for the minimum to rise more towards the end of summer as the ocean gains heat.

We have to note that the minimum has risen less in January than in February and March.

The interesting thing is that the warmth gained in summer and more particularly in winter is not being carried forward to appear in the January maximum. So, the system sheds energy within the annual cycle just as it does overnight.

You can work out what this means for global warming theory for yourself.

Conclusion

Its apparent that the climate has changed and that this is not unusual.

 In order to understand a phenomenon, we need to drill down to the detail. Climate change is not a simple phenomenon. It can affect night time temperature and not daytime temperature and the winter months more than the summer months. Unfortunately, few people are aware of the detail and are easily persuaded to take a simplistic point of view.

The likely explanation of variation in temperature is a change in the direction of the wind alternating between the ocean and/or low latitudes and the land and/or high latitudes. We are aware that is what gives rise to the day to day variations in temperature. What is not realized is that the forces that alter the direction of the wind change on all time scales. Prior to the ‘global warming scare, students of climate were aware of the ‘Arctic Oscillation’ between winds from the south and winds from the north that changed surface temperatures in over a period of thirty years or more. We now know, or should know, that the Antarctic Oscillation of the Southern Hemisphere is more powerful than the Arctic Oscillation. These oscillations are primarily a winter phenomenon. But they affect cloud cover and therefore the uptake of solar energy by the ocean. They drive changes in the ocean currents that bring cold waters to the tropics and warm waters from the tropics down the east coasts of the continents in the southern hemisphere. These changes take a long time to play out.

When we drill down into the detail, climate changes differently according to the month and season of the year. Plainly, surface temperature is not simply aligned to change in the carbon dioxide content of the atmosphere. Temperature is governed in the first instance by where the wind is coming from. Before we jump to conclusions, we should keep that in mind.

Here we are talking about the climate of a specific location in the southern hemisphere. But the same story applies to the entire hemisphere. My next post will cover that.

Policies designed to limit the generation of energy that adds to the carbon dioxide content of the air are based on a false premise. By increasing the cost of energy these policies erode disposable income, trash energy intensive industries and export employment to countries where energy is less expensive. By adding to transport costs these policies disadvantage everyone, none more so than in remote rural communities like Margaret River.

All intermittent sources of energy need to be backed up with sources that are available ‘on demand’. The latter must be built and staffed, and people paid to stand around while the sun is shining and the wind is blowing. That cost is paid, not by the provider of energy sourced from so called ‘renewables’, but by the taxpayer via subsidies, or the consumer via higher electricity prices.

To correct this misallocation of resources and put things aright, all subsidies and incentives should be removed, and energy providers engaged to provide power on a 24/7/365 basis, with penalties attached for nonperformance. That is what is expected of other producers of goods and services and it makes no sense to promote a specially privileged group of enthusiasts and enable them to escape their obligations.

Paradoxically, the argument for ‘sustainability’ although patently well meaning, is destructive in its effects on society. The clamor for action has reached fever pitch. Those of us with perhaps longer memories, perhaps we have just been around for a longer time, perhaps we have just learned to be more cautious, we are skeptical. Perhaps we feel the cold more acutely. It’s the oldies who go north in winter. We know what we like. We would like our summers to be a bit warmer.

The enthusiasm of youth is a great thing. It’s the source of revolutions. But revolutions sometimes run to excess.

Is this revolution well based? Have the hot-heads running this show been able to put their finger on what it is that worries them? Is it really the weather or something like the high price of land, the cost of housing, pressure to perform at school, the high cost of health care, the backpackers taking their jobs………..perhaps they don’t have a job? Perhaps they don’t have two parents at home? Perhaps their brains are addled by drugs and too much sex. Perhaps they just feel that they have lost their way and don’t know why, or what to do about it?

It’s vintage time. If I hadn’t fallen off a ladder, cracked a couple of ribs and needed to take it easy, this would not have been written

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Confirmation

Capture

From

Journal of Atmospheric and Solar-Terrestrial Physics

Volumes 90–91, December 2012, Pages 9-14
  • National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences, 3 G. Bonchev, Sofia, Bulgaria
Abstract

The strong sensitivity of the Earth’s radiation balance to variations in the lower stratospheric ozone—reported previously—is analysed here by the use of non-linear statistical methods. Our non-linear model of the land air temperature (T)—driven by the measured Arosa total ozone (TOZ)—explains 75% of total variability of Earth’s T variations during the period 1926–2011. We have analysed also the factors which could influence the TOZ variability and found that the strongest impact belongs to the multi-decadal variations of galactic cosmic rays. Constructing a statistical model of the ozone variability, we have been able to predict the tendency in the land air T evolution till the end of the current decade. Results show that Earth is facing a weak cooling of the surface T by 0.05–0.25 K (depending on the ozone model) until the end of the current solar cycle. A new mechanism for O3 influence on climate is proposed.

 

Comment

I disagree with the authors interpretation of the mechanism involved that is described in part as:  increase or decrease of the greenhouse effect, depending on the sign of the humidity changes. 

More simply, the Earths radiation balance is much affected by the degree to which incoming radiation is reflected by cloud cover.

I maintain (suggest is too weak a word) that ozone as an absorber of outgoing radiation by the Earth, radiation continuously, day and night,  impacting the temperature and relative humidity of the highly reflective ice-cloud-zone that is found from a couple of kilometres above the surface of the Earth unto the limits of the ‘weather-sphere’. The weather-sphere, I would describe as the zone that contains sufficient water vapour to promote the appearance and disappearance of  minute, highly reflective, multi-branching  (like the international space station) crystals of ice.

Ice crystals reflect and scatter incoming radiation,

There is no need to invoke carbon dioxide or its increasing presence in the atmosphere, or the notion of a greenhouse effect, to explain surface temperature variations. Insofar as carbon dioxide promotes the growth of vegetation and increases the mass of water in the hydro logic cycle it will promote humidity and the formation of more cloud.

The atmosphere ejects heat by virtue of convection. It lacks any of the properties of a greenhouse. The tragic failure of climate science, in the face of overwhelming evidence to the contrary, is to misunderstand the physics of the atmosphere.

The wilfulness of ignorance and the determination to hang on to old dogma is astounding: this paper appeared in 2012.

Reflection of sunlight from cloud at 5-8km in elevation (Cirrus).

https://earthobservatory.nasa.gov/IOTD/view.php?id=90269&src=eoa-iotd

Quote:

The EPIC data also helped confirm that the flashes are coming from a high altitude, not simply water on the ground. Two channels on the instrument are designed to measure the height of clouds. According to the observations, high cirrus clouds—5 to 8 kilometers (3 to 5 miles) up in the atmosphere—appeared wherever the glints were located.

“The source of the flashes is definitely not on the ground,” Marshak said. “It is definitely ice, and most likely solar reflection off of horizontally oriented particles.”

Marshak is now investigating how common these horizontal ice particles are, and whether they are common enough to have a measurable impact on how much sunlight passes through the atmosphere. If so, it is a feature that would need to be incorporated into computer models of how much heat is reaching and leaving Earth.

Perhaps we should admit that it will take time to get ‘the science’ properly settled.

There is a notion in IPCC  ‘climate science’ that high altitude cloud has a warming influence on the surface.    A manurial notion if ever there was one.

As to whether there will be ice cloud at elevation or not….then the ozone content of the air will be a factor of importance because ozone absorption of infrared from the Earth itself determines air temperature and therefore relative humidity and the degree and extent of precipitation.

The polar vortex. Fantasy versus reality.

In January 2017 an essay  appeared with the title:

WHAT IS THE POLAR VORTEX AND HOW DOES IT INFLUENCE WEATHER?

Authors are Darryn W. Waugh, Adam H. Sobel, and Lorenzo M. Polvani

The essay can be found here: http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-D-15-00212.1

Unfortunately  this essay does nothing to advance our knowledge of the role of the polar atmosphere in determining climate dynamics. It represents the contrived views of established climate science practitioners of the alarmist persuasion.

There is a relationship between the ozone content of the air and surface pressure that was discovered prior to 1900 that was well documented by Dobson in the 1920s. In mid and high latitudes low surface pressure is associated with superior total column ozone. Ozone is a warming, rarefying influence because it is a greenhouse gas mobilising infrared energy from the Earth itself, even within the region of the polar night. To materially change surface pressure ozone must be present through the bulk of the atmospheric column. Half of the atmospheric column is found below the 500 hPa pressure level and half above. More than half of the column is affected. It follows that the tropopause is not found at the same pressure level in high latitudes as it is in low latitudes. This is important because the tropopause marks the boundary between the troposphere and the stratosphere.

Let me begin by taking issue with this following statement from the Waugh, Sobel and Polvani paper: The strong circumpolar westerlies that define the stratospheric polar vortex maximize at around 60° latitude, from just above the tropopause (~100 hPa) into the mesosphere (above 1 hPa; see Fig. 2).

The ’tropopause’, by definition, is found at the elevation where air temperature ceases to decline with altitude. Wikipedia puts it this way: ‘Going upward from the surface, it is the point where air ceases to cool with height, and becomes almost completely dry.’

The reversal of temperature decline at ‘the tropopause’ is due to the presence of ozone that absorbs energy from Earths long wave radiation in the infrared spectrum.  The ‘tropopause’ marks the start of the stratosphere where the air is dry and it warms or at least maintains its temperature with increasing elevation.

The atmosphere in the mid latitudes between 400 hPa and 50 hPa moves from west to east and pole-wards. The strongest winds on the planet are the north westerlies of the southern hemisphere. Even in the northern hemisphere air masses move gradually southwards towards the Antarctic polar front where surface air pressure achieves a planetary minimum that is sustained across all months of the year.

In regions of low surface pressure, commonly centred at about 60° of latitude, the decline in temperature with increasing altitude ceases at a lower elevation (400hPa) than in zones of high surface pressure. Between 400 hPa and 50 hPa air masses with a very different composition in terms of ozone, temperature and density occupy the same horizontal domain. Here, instability is the rule. Ozone rich air is displaced upwards and polar cyclones are initiated. Polar cyclones propagate from the interaction layer down to the surface and they initiate the flow that manifests as the vortex in the stratosphere.

Over the polar cap the temperature of the air falls all the way between the surface and the upper stratosphere. Patently, there is no tropopause to be found inside the vortex. Here the air contains little ozone.

Lets re-iterate this point: Polar cyclones are generated at the front between air of polar and extra-tropical origin the latter being rich in ozone, warmer, less dense and manifesting at a lower altitude. The ‘polar front’ is where two air streams of different character converge. The difference in air density is most extreme in winter due to the descent of ozone starved mesospheric air inside the vortex and the increase in the ozone content of the air outside the vortex in the winter season. But, summer or winter, it is the ozone content of the air, and its latitudinal origin that is a major influence on air density. If air travels pole-wards it is less dense because it comes from a warmer place and in addition it is continually warmed because it is ozone rich. As such it derives energy from the Earths itself.

Polar cyclones propagate downwards from the domain where marked differences in the ozone content of the air manifest. This domain  lies between the 400 hPa and 50 hPa pressure levels. This domain can not be described as either troposphere or stratosphere and the term ‘tropopause’ has no place in the description of the properties of this domain. Arguably, in winter, the atmosphere directly over the poles is entirely stratospheric and mesospheric in origin. It is extremely dry and very cold. Air that enters the circulation from the mid latitudes is warm and rich in ozone. It is stratospheric in its composition at 400 hPa.

A chain of Polar Cyclones constitutes THE POLAR VORTEX. The strongest winds are located between 400 hPa and 50 hPa and again in the upper stratosphere at 10 hPa.

Given the relationship between the ozone content of the air and its density and also the highly variable increase in the ozone content of the air in winter from one winter to the next and also across the decades, the rate of transfer of energy from the equator to polar regions via atmospheric movement is inconstant.  The temperature of the air at a particular location  is  a function of the strength of the polar vortex. Enhanced north westerly winds in the southern hemisphere are consistent with enhanced flows of warm, moist air of tropical origin to high latitudes. On the other hand, displacement of the polar cyclones towards the equator brings cold polar air to the mid latitudes. Lower surface pressure in high latitudes results in higher surface pressure in the mid latitudes affecting cloud cover, rainfall, and air flows.

The decline in surface pressure at all latitudes south of 50° south over the last seventy years is well documented.  This decline in surface pressure relates to an increase in the ozone content of the air outside the vortex. It constitutes climate change in action.

RE The stratospheric polar vortex appears each win­ter as a consequence of the large-scale temperature gradients between the midlatitudes and the pole.

Emphatically no, the vortex is a product of variations in air density at the same elevation, not the gradient in temperature between the equator and the pole. In winter ascent occurs outside the vortex proceeding to the limits of the stratosphere while descent of cold air prevails inside the vortex. Descent also occurs in the mid latitudes of the winter hemisphere where high pressure cells prevail.  Over the polar cap in winter descent is reinforced by high surface pressure. In summer a gently ascending circulation of low density ozone rich air occurs in the stratosphere across the entire polar cap. For this reason and the slight warming due to summer insolation and despite the shift in the atmosphere from mid latitudes to the poles as surface pressures rise due to reduced polar cyclone activity, polar surface pressure is  lower in summer than in winter.

Differences between the hemispheres

There is a fundamental difference between the hemispheres in the nature of the polar vortex. It is more vigorous and longer sustained in its winter form in the southern hemisphere than in the northern hemisphere. This is due to sustained contrasts in air density in the 400 hPa to 50 hPa domain on the margins of Antarctica. The geography of the distribution of land and sea between the hemispheres is responsible for this difference. In the upshot strong flows of mesospheric air inside the vortex dilute the ozone content of the air in the entire southern hemisphere while an absence of this flow in the northern hemisphere allows ozone partial pressure to build.

The Ozone Hole over Antarctica in Spring

This phenomenon is entirely natural. It is a consequence of the change in the circulation of the air during the final warming that brings ozone deficient tropospheric air of mid latitude origin flooding across the polar cap and into the 400 hPa to 50 hPa domain.

Rossby Waves and sudden stratospheric warmings.

 re this statement

“Rossby waves excited in the troposphere propagate up into the stratosphere and perturb the vortex away from radiative equilibrium, weakening it and distorting its shape away from circular symmetry about the pole.”

The more rational explanation is that localised centres of tropospheric descent and stratospheric ascent that form up in the mid latitudes over the oceans are periodically invigorated as ozone accumulates above 50 hPa. Episodically, these centres of ozone accumulation expand in diameter and invade the polar domain assisting the lowering of surface pressure in high latitudes as they do so. Centres of  ozone accumulation are represented on diagrams of the upper atmosphere as  regions of elevated geopotential height. The phenomenon of sudden stratospheric warmings in winter are no different in nature to that of the final stratospheric warming in late spring.  Both involve a takeover of the polar cap by ozone rich air that circulates anticlockwise on the outer margins of the polar vortex. Hence, in summer, and during a stratospheric warming over the pole, easterlies replace westerly winds at the 10 hPa pressure elevation. The takeover in winter begins and has its greatest impact at the highest elevations.

All movements in the atmosphere are driven in the first instance by surface pressure relationships. Secondly, differences in air density in the horizontal domain result in uplift whatever the elevation that they occur at. Thirdly, in view of the fact that the atmosphere rotates in the same direction as the Earth, but faster, there is very likely an electromagnetic driver that is most energetic at the highest elevations where the atmosphere carries particles with an electric charge. Gravity ensures that what goes up must come down. Areas of descent tend to form over the cooler oceans especially in the winter hemisphere. In the upper stratosphere these areas of tropospheric descent are ozone rich and give rise to ascent and spreading as ozone accumulates.

Inside the polar vortex there is mixing of stratospheric and mesospheric air, that remains relatively ozone poor.

Conclusion: Climate science as presently constituted fails to get to grips with the natural and enduring dynamics of the atmosphere that are manifestly responsible for climate change. Unfortunately establishment climate science is wedded to the philosophy that demonises carbon dioxide, an essential ingredient for photosynthesis on land and in the oceans. Carbon dioxide is at the base of the food chain. Human welfare is tied to its proliferation.

The establishment has it ‘arse about’ and are hell bent on ruination.