This may suggest that for a given optical thickness, the influence of particle shape on the radiative forcing caused by a cloud composed of small ice crystals can be negligible. (pubs.giss.nasa.gov)
In one paper, they learned how to undo this effect by altering particle shape. (sciencedaily.com)
By understanding particle shape, researchers can more accurately establish all other particle properties and better predict their behavior. (pnnl.gov)