6. One paragraph description of your model (e.g. abstract from report or
   paper);

Institute of Atmospheric Physics land surface model (IAP94) is a 
comprehensive one with detailed description for the processes of 
vegetation, snow cover and soil. Particular attention has been paid 
to the cases with three water phases in land surface media. On the 
basis of the mixture theory and the theory of fluid dynamics of porous 
media, the system of universal conservational equations for water and 
heat of snow, soil and vegetation canopy has been constructed. On this 
background, all important factors that may affect the water and heat 
balance in media can be considered naturally, and each factor and term 
possess distinct physical meaning. In the computation of water content 
and temperature, the water phase change and heat transportation by water 
flow is taken into account. Moreover, particular attention has been given 
to the snow compaction. The model has been validated against field 
measurements in off-line experiments. The model has been implemented into 
IAP GCM and 100-year control run was conducted.

50. Please provide references relevant to the model description and use.

Dai Y-J and Zeng Q-C (1997) A Land Surface Model (IAP94) for Climate 
Studies, Part I: Formulation and Valiadation in off-line Experiments 
(submitted to "Climate Dynamics")