being a jelly pilot was a good gig during the dry times. at least there was plenty of water up there.
the jellies were created to “aid in the reconstruction of natural atmospheric hydrologic patterns.” no one had any idea what they could do, but with algal hydrogen manufacturing and sequestration, along with advanced algal polymers, it was straightforward to create a flying, growing algae blob. and once they achieved a certain mass, they were also an easy place to store individuals of excess enthusiasm. in flying green jellyfish; here to save the world.
the clouds were conceived fundamentally as moisture bulldozers. they were intended to follow prevailing winds and herd moisture, by cleverness and weather modelling, or just by shoving vapor, as a giant floating mountain range of green jelly.
the 3d blooming algal forms were endlessly growing, so the system gained power steadily, if slowly. thunderclouds are large, it takes quite a bulldozer to push one, much less an entire weather front.
it was haphazard at first. designs required experimentation. eventually there was a vaguely regularized jelly design that looked like a lumpy arrowhead, or sometimes the flying-v of geese. when things were working well, a string of jellies would fly in formation across a warm ocean, gathering moisture, and push it all into the interior of the continent to fall as rain, as regularly as they could manage.
meanwhile, each jellycloud was it’s own tiny homestead on oversized, high-altitude acreage. a little cabin on a mountain of floating algae polymer and deeply gooed hydrogen.