The installed capacity of UK Wind farms is currently 25GW. The business secretary Kwasi Kwarteng proposes to at least double that number, but there is a basic problem which seemingly everyone overlooks – Wind Lulls. Sometimes high pressure sits over northern Europe for many days on end bringing still air with no wind. All UK, German and French wind turbines are becalmed producing little if any power. Life and essential services has to continue so old coal stations are fired up and CC Gas stations run at maximum output to meet peak demand.
Here are two recent examples:
The 7 day lull from 16-22 December 2021
Comparison of Gas and Wind output during the 7 day Wind Lull last December.
We also see below how coal is still needed to balance power on the grid.
2.The recent 10 day wind lull lasting 10 days. At least this time there was a bit of sunshine yet notice again how the remaining 2 coal power stations were also needed . The whole of March saw only two brief spells of good wind output.
10 day wind lull March 20 – March 30
Most of March saw light winds. Output reached a maximum of 15GW briefly or a maximum load capacity of 60% . Note that I am also correcting the metered wind output to include embedded small wind farms as well.
Gas output compared to wind output – almost perfect anti-correlation.
Don’t worry though we are told. We just need “energy storage”, but no-one ever calculates just how much energy we would need store in order to see us through a wind drought like we have just experienced or the one last December.
In December there was additionally no solar power generated. In fact solar energy is perversely anti-correlated to demand. Annual peak demand is around 6pm on winter evenings when solar energy output is zero. So let’s estimate how much energy would need to be stored to cover the December lull.
We need 7 days of continuous power delivery at an average load of 30GW. So we need to store:
7 x 24 x 30 = 5040 GWh or 1.8 x 10**16 joules
This is a huge amount of energy which is approximately equivalent to
1200 Hiroshima size bombs
373 million fully charged Tesla Powerwalls
67.2 million long range Tesla 3 car battery charges
So it is unlikely that any future fleet of electric cars can back up the grid, assuming their owners would agree to walk rather than drive during a wind lull.
The largest energy store in the UK is the Dinorwig pumped storage Power Station in Snowdonia. It took 10 years to construct but actually paid for itself within 2 years by balancing peak time loads. It can store up to 9.1 GWh of energy which is a useful power source over short periods. However it is still 500 times too small to balance a wind dominated energy grid for a week. Nor do we have enough mountains to dramatically increase such pumped storage systems.
The largest Tesla grid size battery storage is in Hornsdale Southern Australia. It can store 193 MWh which is useful to cover short outages but still way too small for a wind lull.
As David MacKay used to say “We need an Energy Policy which adds up”.
How accurate is the pair-wise homogenisation algorithm applied to GHCN land temperature measurements and the instrumentation corrections made to sea surface temperatures?
Long term station measurements are affected by a station’s physical relocation, by environmental changes (urban development) and by instrumentation changes. Station relocations are usually recorded in metadata but not in a consistent way. Therefore an automated algorithm called the pairwise homogenisation has been developed which compares nearby stations to then identify “break-points” for a given station relative to its neighbours. A statistically significant and persistent violation of relative homogeneity is presumed to be artificial. The GHCN data is updated daily and the full pairwise algorithm is then also run daily.
Sea Surface temperatures have been measured since 1850 using different methods from bucket temperature, engine inlet temperatures, through to buoys and satellite data. Methods to correct instrumentation changes have been developed. The latest HadSST4 data incorporating satellite corrections to recent buoy data.
The overall result of both these updates has been to increase the apparent recent warming. This can be seen by comparing the uncorrected global temperature data with the corrected data each calculated in exactly the same way by spherical triangulation.
Global temperatures calculated both on the raw and corrected temperature data
We see that the net effect is to increase the apparent warming since ~2000 by about 0.15C. How sure are we that these automated algorithmic corrections are correct? A recent paper has looked in detail at the effects of the pairwise algorithm on GHCN-V4 and the results are surprising. They downloaded all daily versions of GHCN-V4 over a period of 10 years providing a consistency check over time of the corrections as applied. They studied European stations and found that an average of 100 different pairwise corrections were applied during that time while only 3% of these actually corresponded to documented metadata events e.g. station relocations.
This implies that the algorithm is far too sensitive. You can see below how consistent these adjustments were by seeing how many times each was repeated. This results in a consistency rate of just 16%. The rest are most likely wrong.
Just 19% of the adjustments made in V4 correspond to documented events in the associated metadata. There could be station moves or instrumentation changes that are not documented but if so then we would expect consistency after some particular date. This is not observed and most changes occur very inconsistently or intermittently.
Proximity of PHA adjustments to a documented event in the station’s metadata.
Another consideration is that a comparison of the temperature of one station with its near neighbours should occasionally identify those reading too hot and reduce the recorded temperature accordingly. Yet the trend always seems to be towards a warmer trend than that in the raw measurement data.
Here is one example. Click on image to see animation.
I have just read the book “Unsettled” by Steven Koonin a Caltech Physicist who has a long academic, industrial and political career. Of course he agrees that CO2 emissions have a warming effect, but he argues that many of the more extreme claims of climate change are unproven and potentially dangerous. The policy to reach net Zero emissions by 2050 based on renewables alone could well destroy western economies. As a result of his criticism, mainstream climate scientists have ganged up on him to call him a “denier”, especially as he once worked as Chief Scientist for BP. His main point is that the basic physics of greenhouse warming as described say in AR5 is correct, but the implication that this means we must close all fossil fuels immediately is mainly political. Furthermore he criticises those Climate scientists that push scare stories of increasing severity of Hurricanes, droughts, and accelerating sea level rise, to imply that time is short. On the contrary the data do not support such alarmist statements. Extreme weather events are not increasing in frequency and sea level has been rising for hundreds of years. Instead we probably have about 50 years to finally solve the energy/climate dichotomy. Pushing current wind and solar right now will not work, partly because we will need new nuclear. I am pretty much aligned with his thinking.
Joe Rogan has managed to achieve the impossible – an actual long distance debate between Steven Koonin and Andrew Desler. First up was Steve Koonin.
Some sound bites:
“I hate the term CO2 pollution.”
“Nobody has put together a sensible decarbonisation plan. The plans that you see are put out by a bunch of academics , but noone will implement them unless they can make money.”
“You need to change the energy system not by tooth extraction but by orthodenture !” i.e. carefully!
Decarbonisation must be done in a graceful way.
6 billion people in the third world need energy to improve their life and who are we to tell them they can’t do that. So yes maybe we can cut our carbon emissions but who are we to restrict their development?
US emissions are 16% of global emissions so reducing by global emissions by 30% will have a modest effect on climate change.
Plans are put out by a bunch of academics e.g. 2075 carbonisation. The daily weather that gets referenced to climate change drives me crazy! There is no evidence that the frequency of extreme weather is increasing. No wonder kids are getting scared all the time for the future.
Climate Models typically use 3D tube boxes 60 miles in dimension size so they can’t effectively simulate the details of weather, because the weather acts on much smaller sizes for example clouds, onshore and offshore winds etc.
That’s why climate models only give you a hazy picture of the future
We only have one chance at decarbonising the energy system We’ve got the time to get this right.
“Minimum temperatures are going up faster than maximum temperatures” I agree with this statement see Nights warm faster than Days
Joe Rogan then gave the right of reply a week later to Andrew Dessler.
Andrew Dessler does not address any of Koonin’s criticisms of climate science itself, but focuses instead on the Energy debate.
He starts up by comparing Kronin to the old Tobacco lobby, the fluorocarbon ban, etc. which is kind of silly since I am sure he agrees too that those were easily solvable problems. Andrew’s argument is that Koonin is no different to the tobacco scientists of the 1960s. The slur is implied because Kroonin was once chief scientists at BP, so somehow he is still in the pay of the oil industry.
Climate change though is fundamentally different to the tobacco or fluorocarbon debate, because there are no obvious simple alternatives to fossil fuels. The real problem with the proposed solution is that renewables are intermittent, even if prices for solar and wind power “capacity” are now competitive, because they still need an equivalent amount of dispatchable backup.
He keeps repeating the ugly slur that “Dr Koonin rejects anything which doesn’t support his client (fossil fuels) because quote “He is trying to create doubt”
During the two hour interview he doesn’t really discuss climate science at all, or address Koonin’s criticisms.
1/4 of emissions go into the biosphere and 1/4 got into the oceans (Greening and Acidifying) and 1/2 remains in the atmosphere. If there were an easy way to drag more out eg. planting forests then we would be doing it.
If you could reach $50 a ton to suck out CO2 then it would be worth it.
In Europe natural gas is very expensive. He likes geothermal because drilling has got so good thanks to fracking.
Plastic depends on oil and he agrees we need that we need them long term. Similarly oil is used to make tar for road surfaces and even wind turbine blades.
We might be able to solve the energy system but farming and agriculture will be tougher to decarbonise. Ethanol blending in petrol is really for the farmers. Fertilizers etc. Factory farming is awful.
“We really should be phasing out fossil fuels as fast as possible”
When invited at the end to have a debate with Steve Koonin, he declines because he says it is all in the peer reviewed papers. The other reason he gave was that he once had a debate with Richard Lindzen which clearly didn’t go so well. I think this may be this one (see footnote).
This is the first time I have ever heard a Jo Rogan’s podcast. I was really impressed by the way he handled things and had prepared himself by reading the book first. He has come n for a lot of stick recently but on these podcasts he came out of it really well and with open mind.
Footnote: Debate between Andrew Dessler and Richard Lindzen.