Droplet Reaction and Evaporation of Agents Model (DREAM). Glass model results; Sand model plans

The Agent Fate Program is generating an extensive set of quality agent fate data which is being used to develop highly accurate secondary evaporation predictive models. Models are being developed that cover a wide range of traditional chemical warfare agents deposited onto surfaces routinely found on the battlefield and fixed site installations (i.e., concrete, sand, asphalt, etc.). This presentation describes the work in developing a sulfur mustard (HD) secondary evaporation model for non-porous and porous substrate media. The model parameters, assumptions, formulation, and empirical data used to develop and fine tune the model will be discussed. Comparisons and associated error of the model fit to wind tunnel data and outdoor field trials will also be presented

An agenda for land-surface hydrology research and a call for the second international hydrological decade.

Hydrologic research at the interface between the atmosphere and land surface is undergoing a dramatic change in focus, driven by new societal priorities, emerging technologies, and better understanding of the earth system. In this paper an agenda for land surface hydrology research is proposed in order to open the debate for more comprehensive prioritization of science and application activities in the hydrologic sciences. Sets of priority science questions are posed and research strategies for achieving progress are identified. The proposed research agenda is also coupled with ongoing international data collection programs. The driving science questions and related research agenda lead to a call for the second International Hydrologic Decade. This activity will help to ensure that hydrology starts the new millennium as a coherent and vital discipline