论文信息 - Further experimental evidence that condensation is a major cause of airflow

Further experimental evidence that condensation is a major cause of airflow

This paper further explores the physics of water condensation, using an experimental structure designed for that purpose. The data show a highly significant correlation (R2 >0.94, p value <0.001) between observed airflows and partial pressure changes from condensation, when the results of different experiments are pooled. Changes in air density on cooling provide insufficient energy to account for the airflow. The finding is that the kinetic energy of the chilled air falls short by an order of magnitude, even to move a relatively small proportion of the 20 kg of air contained within the structure. Meanwhile the physics of condensation indicate a surplus of kinetic energy is made available from the air surrounding the locus of condensation. At low rates of condensation a considerable proportion of the available kinetic energy in the enclosed air is absorbed in friction and turbulence. That proportion reduces with higher rates of condensation.

M. Hodnett | C. Peña | P. Bunyard | J. Burgos-Salcedo

[1] M. Hodnett,et al. Condensation and partial pressure change as a major cause of airflow: Experimental evidence , 2017 .

[2] T. Oki,et al. Evapotranspiration seasonality across the Amazon Basin , 2017 .

[3] M. Hodnett,et al. Experimental evidence of condensation-driven airflow , 2015 .

[4] P. Bunyard. How the Biotic Pump links the hydrological and the rainforest to climate : ¿Is it for real? ¿How can we prove it? , 2014 .

[5] D. Sheil,et al. Where do winds come from? A new theory on how water vapor condensation influences atmospheric pressure and dynamics , 2010, 1004.0355.

[6] V. G. Gorshkov,et al. Biotic pump of atmospheric moisture as driver of the hydrological cycle on land , 2006 .

[7] Germán Poveda,et al. On the existence of Lloró (the rainiest locality on Earth): Enhanced ocean‐land‐atmosphere interaction by a low‐level jet , 2000 .