By Hughhunt - Own work - see also Stilgoe J, Watson M, Kuo K (2013) Public Engagement with Biotechnologies Offers Lessons for the Governance of Geoengineering Research and Beyond. PLoS Biol 11(11): e1001707. doi:10.1371/journal.pbio.1001707, CC BY 2.5, File:SPICE TESTBED - DEPLOYED POSITION.jpg - Wikimedia Commons
Some opportunities for AWES?
Dopplershifts, would be a much better solution. as that can be precisely attuned to required frequency. If thermal radiation is proportional to the wave function? Then it just a matter of red or blue shifting the radiation to lower energy density. Even behind solar shielding things are still going to get toasty. So if the total solar output could be changed by an lens/ prism in synchronised orbit with earth. a net cooling effect could be achieved. It would have a inbuilt self destruct/ shutter. I know it can be done with lasers when there making boes- Einstein condensates. I don’t think that completely out of the realm of current ability to achieve. We know that eclipses are at the right distance to turn the sky’s from brightest day to darkest nights. So any deflector would have to have a synchronous orbit. somewhere past the moons orbit between earth and the sun. Trigonometry would probably help find the smallest size a object can be for this to work.and at what distance. This would be a spawes type device.
The pumping pressure device in the ground could perhaps be acted by the AWES (in pumping mode?) without using a generator (?).
From what I remember about differential cooling. yes it possible to have a system with no moving parts. Einstein made a cooling system that worked automatically. is widely use in nuclear reactors. Google Scholar
You also have refrigeration to consider how that works in real life.
As long ans you have convection in the system it will work. Hot side rising while the cold Sinks.
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Overview
Stratospheric Aerosol Injection (SAI) is a theoretical solar geoengineering proposal to spray large quantities of tiny reflective particles into the stratosphere, an upper layer of the Earth’s atmosphere, in order to cool the planet by reflecting sunlight back into space. Proposals range from spraying reflective particles, such as sulphur dioxides, finely powdered salt or calcium carbonate, from aircraft, shooting particles from artillery guns, or using large hoses to reach the sky. None of those solar geoengineering approaches address the underlying causes of climate change. In stead they aim to control the amount of incoming solar radiation by emulating the sulphur-rich dust cloud that remains in the atmosphere after large volcanic eruptions. In contrast to a volcanic outburst, SAI assumes continuous maintenance of the particle layers by regular injections.SAI using sulphur dioxide is the most-studied option. Computer simulations suggest that this technique would likely cause droughts in Africa and Asia and estimate that the SAI could endanger the source of food and water for two billion people.Because of the unequal global impacts and its potential to be weaponized, solar geoengineering carries insurmountable challenges for governance. Therefore, several hundred civil society organizations from around the world are calling for a multilateral ban on solar geoengineering.
What sort of AWES could be suitable? Fly-gen or ground-gen kytoons or even Solar kytoons, knowing that water production then spray could be insured onboard, but reflective particles should be at ground unless the kytoon has the ability to lift a large amount of said particles from the ground station?
Seems like deserts reflect the most sunlight, while reducing the amount of water vapor in the air, with water vapor being a major greenhouse gas. Some people hypothesize that the =formerly-green Sahara desert is a result of overgrazing by human-supervised livestock. This may explain why we’re enjoying lower temps than previous similar cycles, with an unprecedented 12,000 years of fairly stable temps. Usually, temps have wild swings in both directions, preventing long-term civilizations from emerging in any given region. The 12,000 years of stable temps appear to be responsible for civilization. Meanwhile, we are overdue for our next impending glacial cycle of the current ice age. The largely unacknowledged fact is coal and diesel are the “greenest” forms of energy, with CO2 helping reverse desertification, and that “greening” the planet with more vegetation increases atmospheric water vapor, which retains heat at night, but also increases snowfall, which reflects sunlight. Good luck trying to untangle all of the inter-related factors affecting climate. Seems like whatever we try to do could have about a 50% chance of being wrong! Will we ever get it all figured out? How would we know if we ever did get it all untangled? 
The 193 signatories to the convention agreed to outlaw such geoengineering projects “until there is an adequate scientific basis on which to justify such activities and appropriate consideration of the associated risks for the environment and biodiversity and associated social, economic and cultural impacts”.
Read more: What the UN ban on geoengineering really means | New Scientist
We’ve been geoengineering this planet since we were photosynthetic bacteria 3.5 billion years ago. At first it was harmless, we use red/purple pigments that harnessed energy from infrared radiation and produced sulfides and stuff like that. But then we discovered chlorophyll, which produced highly-toxic oxygen, and so we almost wiped ourselves out with our own oxygen pollution. The sun was weaker then so after we had converted all the CO2 to oxygen, the oxygen precipitated all the dissolved iron in the seawater creating what we mine today as iron-ore, then we have a billion-year-long ice age - snowball Earth. So there is an example of how we shape the planet and the climate. Luckily, some of us managed to learn to survive, then thrive, in our self-produced, toxic oxygen environment.
Today;s ice ages are the result of the Isthmus of Panama rising up out of the ocean , cutting off the Gulf of Mexico from the cooler Pacific Ocean. So now the Gulf of Mexico gets very warm, creating the Gulf Stream current, that brings warm water to the North Atlantic ocean, which evaporates and falls as snow, creating our Northern ice caps. Voila! Instant ice age. Most people talk a lot about climate. Few really know much about it.
