Climate Change: Nature-based Solutions (STC Report)

Baroness Worthington Excerpts

Thursday 9th February 2023 Grand Committee

[Baroness Worthington (CB)]

My Lords, it is my pleasure to take part in the debate this afternoon, and I add my congratulations to the committee on such an excellent and thorough report conducted in very difficult circumstances. I particularly thank the noble Baroness, Lady Brown, for her introduction and the noble Lord, Lord Patel, for his excellent chairing of this inquiry.

The summary of this document is excellent; it is very clear. It states that, although there are possible benefits from deploying nature-based solutions in tackling our growing concentrations of greenhouse gases in the atmosphere, there are significant scientific uncertainties about how carbon is stored in habitats now and how much will be sequestered in future. I will focus on that uncertainty in the few minutes that I have today, because it is fundamental to understanding how we can deploy capital into nature-based solutions without jeopardising our efforts to mitigate climate change.

I will explain why it is so important. Before Christmas, when the UK’s first deep coal mine was approved, the Minister said that it was going to be the world’s first carbon-neutral coal mine. The cynicism of that statement beggars belief. Not only was the very group that was supposed to be supplying the off-sets to the mine saying, “Please don’t count on us. We don’t want to sell you these credits. You’re going to damage our reputation”, but the coal mine was counting its emissions only from processing the coal, not from the actual content of coal being burnt.

I stress this, because it is wonderful to look at nature-based solutions, and this is an admirable report, but, on the other side of the ledger, if you sell a nature-based solution or a carbon sink, in many cases you are allowing a carbon emission to occur. They are totally different in their characteristics. It is not true to say that a tonne is equal to a tonne. That was the lie from the carbon market 20 years ago, and we know now that that is not the case. We know that when you burn coal and release into the atmosphere carbon that has been stored over millions of years in the earth, it will stay there for approximately 1,000 years, with a very high degree of certainty that it will cause impact. In fact, there is ever more evidence that it will cause impact the longer we go on, because it is a cumulative problem: these emissions build up over time. When we release tonnes now, they are even more damaging, because the carrying capacity is that much reduced.

Compare that certainty with the complete uncertainty of a nature-based carbon store. There is simply no equivalent. The report is excellent in pointing out that we need far more research and investment in infrastructure, monitoring, reporting, verification and regulation to make sure that this market does not lock us into a self-defeating cycle whereby we rely on nature to try to soak up the emissions from carbon dioxide but we allow the fossil fuel emissions that are driving climate change to continue, making our forests, land and soils that much more unstable and that much less resilient and durable. We are basically locking ourselves into a highly changeable system with high degrees of uncertainty and using false equivalence to tell ourselves this very seductive lie that we can carry on burning fossil fuels.

The report is clear that this is not a “get out of jail free” card and that it should be used only for residual emissions, but nowhere have the Government defined what they are. There is nothing here that points to the rules that need to be set that state how these things can be used and what can be used to claim against them. That is fundamental to this. We are in a brilliant position in the UK to address this, because we have the world’s best scientists located here, including atmospheric chemists. I am delighted that we have an atmospheric scientist in our midst today, Professor Ray Weiss from the University of California San Diego, an atmospheric chemist of long standing, who understands this far better than me. We have our own experts in this area, and a tall-tower network of sensors and monitors that allow us to know in great detail what is happening to our biosphere.

Those are the sorts of investments that we have to double down on, and I hope that the UK will join up its thinking on how it approaches the measurement of what is happening in the atmosphere. Again, the report is excellent. It states that we must have

“long-term research and monitoring … overseen by the relevant departments”

that will allow us to see the fluxes on a range of different sites around the country, so that we are not just using inventories and guessing whether these actions are delivering a carbon saving but measuring it, and over the long term, so that we have certain sense of whether we are making progress.

We cannot allow this to continue as business as usual. We have been trying to solve climate change for 30 years or longer and, in that time, greenhouse gases in the atmosphere have simply got ever higher. We cannot afford a misstep where we allow the fossil fuel industry to make use of the seductive phrase “nature-based solutions” to carry on with business as usual.

In conclusion, I ask the Minister to go back to the department and ask how we are using the infrastructure that the UK already has in its tall-tower monitoring system to backstop anything that we do on the opening up of private finance and markets into this area. We also have our public funding from ELMS and the reform of the agricultural subsidies, which is a safe space in which to look at, and experiment with, what works.

Let us do that first, get the groundwork done and be certain that this works before we say that it is open season for the private sector to use this and to develop a carbon market. I have studied carbon markets for far too long, and every one that I have looked at booms and busts, for good reason: this is difficult to do. So let us not rush into it and allow this to be abused by those who would seek to get off lightly from their contributions to climate change. I am delighted that this debate has been kicked off, and I again commend the report.