[geo] RE: Clouds in the Arctic only provide cooling during a short period during the summer

2023-06-04 Thread Clive via geoengineering
Hi Robert   I remember learning about heat capacity in physics at school. In my brevity I was unclear. I’m fully aware that you can’t use brighter clouds to sufficiently cool water that is rapidly flowing from a warmer ocean into the Arctic. In my presentation

[geo] RE: Clouds in the Arctic only provide cooling during a short period during the summer

2023-06-03 Thread robert
Hi Clive I was chatting this week with Stephen Salter about Marine Cloud Brightening at different latitudes. It is a misconception, which I also shared, that directly cooling ocean currents flowing into the Arctic offers the main potential intervention for refreezing. The main global

[geo] RE: Clouds in the Arctic only provide cooling during a short period during the summer

2023-06-02 Thread 'Clive Elsworth' via geoengineering
Thanks Stephen I was wondering if anything other than cooling the flow of the oceans into the Arctic could help to cool Greenland ice outside the short period when MCB would work. If droplet scavenging turns out to be effective, we may be able to do it over Greenland from drones or

[geo] RE: Clouds in the Arctic only provide cooling during a short period during the summer

2023-06-02 Thread Stephen Salter
Clive It is true and also rather obvious that cloud brightening only works in summer and this is taken in the calculations about the number of spray vessels which I have circulated. Please let me know if you would like me to send them again. I agree that warm water in winter would be bad and so

[geo] RE: Clouds in the Arctic only provide cooling during a short period during the summer

2023-06-01 Thread Achim Hoffmann
Cooling the Oceans is a no-brainer, if it can be done. There were a few recent publications talking about melting from “below”. Here a recent WWF post including a Video explainer clearly targeted at the wider public (rather than experts).