Accounts due

It common knowledge that climate related treaties do not count all contributions to greenhouse warming when deciding what industrial/economic sectors to target for mitigation. From a political perspective, this may make sense - for example, the politics and narratives of food production makes it a very difficult sector to modify in terms of public opinion and policy. But it is essential that we remember that the physical, geochemical, chemical and biological phenomena of climate change occur independent of human wishes, wants and intent. Natural systems don't care about human societies and politics. Human contributed changes in greenhouses gases alters natures' normal accounting of global climate. Global accounts, or 'books', cannot and will not change just because human policy decides that certain economic sectors are exempt from greenhouse gas mitigation efforts. By granting exemptions, we are essentially creating a false set of greenhouse gas accounts. The real greenhouse gas/ climate change accounts are kept by planet Earth. Cooking the books to ease the passage of international treaties won't save us when the climate accounts are due.