Abstract
Abstract. Meteorological measurements were performed in a prominent ice cave (Eisriesenwelt, Austria) during a full annual cycle. The data show the basic features of a dynamically ventilated cave system with a well distinguished winter and summer regime. The calculated energy balance of the cave ice is largely determined by the input of long-wave radiation originating at the host rock surface. On average the turbulent fluxes withdraw energy from the surface. This is more pronounced during winter due to enhanced circulation and lower humidity. During summer the driving gradients reverse sign and the associated fluxes provide energy for melt. About 4 cm of ice were lost at the measurement site during a reference year. This was due to some sublimation during winter, while the major loss resulted from melt during summer. Small amounts of accumulation occurred during spring due to refreezing of seepage water. These results are largely based on employing a numerical mass and energy balance model. Sensitivity studies prove reliability of the calculated energy balance regarding diverse measurement uncertainties and show that the annual mass balance of the ice strongly depends on cave air temperature during summer and the availability of seepage water in spring.
Subject
Earth-Surface Processes,Water Science and Technology
Reference58 articles.
1. Andreas, E. L.: A theory for the scalar roughness and the scalar transfer coefficients over snow and sea ice, Bound.-Lay. Meteorol., 38, 159–184, 1987.
2. Andreas, E. L. and Murphy, B.: Bulk transfer coefficients for heat and momentum over leads and polynyas, J. Phys. Oceanogr., 16(11), 1875–1883, 1986.
3. Armstrong, L. and Brun, E. (Eds.): Snow and climate: Physical Processes, Surface Energy Exchange and Modeling, Cambridge University Press, 254 pp., 2008.
4. Behm, M. and Hausmann, H.: Eisdickenmessungen in alpinen Höhlen mit Georadar, Die Höhle, 58, 3–11, 2007.
5. Bradley, E. F.: A micrometeorological study of velocity profiles and surface drag in the region modified by change in surface roughness, Q. J. R. Meteor. Soc., 94, 361–379, 1988.
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