People who study solutions suggest we don't need way out geoengineering boondoggles:
https://climatecrocks.com/2017/08/11/paul-hawken-drawdown-and-reversing-climate-change/
But of course this isn't what people want to hear.
When you set out to cross the ocean it's a good idea to carry a lifeboat even if you think you may not need one.
While it is good to fight climate change no matter what the odds, Paul Hawken acknowledges that the odds of geoengineering solving the full problem are not good. For example, his number one 'solution' is refrigerant management; however, the linked article indicates that countries like China indicate they are managing refrigerant gases; however, satellite measurement indicate that they are reporting that they are managing theses gases but in reality they are not. Perhaps, Hawken's number one solution should be to improve human integrity and 'mindfulness' (maybe such a geoengineering 'solution' would make people understand that in the Anthropocene, human activity is the dominant Earth System, and it needs to be engineered in a 'mindfulness' sense of the word):
Title: "'Dodgy' greenhouse gas data threatens Paris accord"
http://www.bbc.com/news/science-environment-40669449Extract: "Air monitors in Switzerland have detected large quantities of one gas coming from a location in Italy.
However, the Italian submission to the UN records just a tiny amount of the substance being emitted.
Levels of some emissions from India and China are so uncertain that experts say their records are plus or minus 100%.
These flaws posed a bigger threat to the Paris climate agreement than US President Donald Trump's intention to withdraw, researchers told BBC Radio 4's Counting Carbon programme.
…
The rules covering how countries report their emissions are currently being negotiated.
But Prof Glen Peters, from the Centre for International Climate Research, in Oslo, said: "The core part of Paris [is] the global stock-takes which are going to happen every five years, and after the stock-takes countries are meant to raise their ambition, but if you can't track progress sufficiently, which is the whole point of these stock-takes, you basically can't do anything.
"So, without good data as a basis, Paris essentially collapses. It just becomes a talkfest without much progress.""
Edit, specifically with regard to China's refrigerant gas emissions see the following extract:
"Another rare warming gas, carbon tetrachloride, once popular as a refrigerant and a solvent but very damaging to the ozone layer, has been banned in Europe since 2002.
But Dr Reimann told Counting Carbon: "We still see 10,000-20,000 tonnes coming out of China every year."
"That is something that shouldn't be there.
"There is actually no Chinese inventory for these gases, as they are banned and industry shouldn't be releasing them anymore."
China's approach to reporting its overall output of warming gases to the UN is also subject to constant and significant revisions."