Clouds and precipitation

OCT 01, 1972

Theoretical models, laboratory experiments and flights by an instrumented sailplane all combine to improve our knowledge of the physical conditions inside clouds.

DOI: 10.1063/1.3071045

J. Doyne Sartor

In these days of emphasis on environmental problems, studies of clouds and precipitation take on an added importance. Clouds and precipitation cleanse the atmosphere of natural and manmade pollutants or process them for later removal. Cloud radiative and dynamic properties control a good deal more than half of the solar energy available for keeping the atmosphere moving, and precipitation keeps the continents green (or white). Destructive storms are spawned mostly from cloud systems, but Man can modify his local environment to some extent now through the “seeding” of clouds, and possibly he will eventually be able to control severe storms and remove damaging pollutants.

This article is only available in PDF format

References

1. J. D. Sartor, PHYSICS TODAY, August 1969, page 45.
2. V. J. Schaefer, Science 104, 457 (1946).https://doi.org/SCIEAS
3. B. Vonnegut, J. Appl. Phys. 18, 593 (1947).https://doi.org/JAPIAU
4. I. Langmuir, J. Meteorol. 5, 175 (1948).https://doi.org/JOMYAP
5. L. M. Hocking, Quart. J. Roy. Meteorol. Soc. 85, 44 (1959).
6. U. Shafrir, M. Neiburger, Collision Efficiencies of Two Spheres Falling in Viscous Medium for Reynolds Numbers up to 19.2, University of California Press, Berkeley, (1964).
7. M. H. Davis, J. D. Sartor, Nature 215, 1371 (1967).https://doi.org/NATUAS
8. M. H. Davis, J. Atmos. Sci., to be published (1972).
9. L. M. Hocking, P. Jonas, Quart. J. Roy. Meteorol. Soc. 96, 722 (1970).
10. J. D. Sartor, J. Geophys. Res. 75, 7547 (1970).https://doi.org/JGREA2
11. M. H. Davis, Quart. J. Mech. and Appl. Math. 17, 499 (1964).https://doi.org/QJMMAV
12. A. H. Miller, C. E. Shelden, W. R. Atkinson, Phys. of Fluids 8, 1921 (1965).https://doi.org/PFLDAS
13. W. R. Atkinson, I. Paluch, J. Geophys. Res. 71, 3811 (1966).https://doi.org/JGREA2
14. J. D. Sartor, W. R. Atkinson, Science 157, 1267 (1967).https://doi.org/SCIEAS
15. A. A. Penzias, R. W. Wilson, Science 169, 583 (1970).https://doi.org/SCIEAS
16. R. B. Harvey, E. A. Lewis, ARCRL‐72‐0078 (1972).
17. C. E. Abbott, T. W. Cannon, Rev. Sci. Inst., to be published (1972).

More about the authors

J. Doyne Sartor, National Center for Atmospheric Research, Boulder.