This work is supported by DOE-ARM Grant DE-A105-90 ER61070. We would also like to thank the ARM personnel and management team responsible for the central site, R. Cederwall and M. Dickerson for their help in designing this experiment, and the NCAR field staff for making this field deployment a success. W. Dabberdt, B. Kuo, Y.-R. Guo, and C. Davis (all of NCAR) are also to be acknowledged for their involvement in the design of these experiments and for numerous discussions. Discussions with J. Hack (NCAR), J. Petch (NCAR), D. Randall (Colorado State University), S. Krueger (University of Utah), J. F. Louis (Atmospheric and Environmental Research, Inc.), and S. Ghan (Pacific Northwest Laboratory) were useful in order to understand the needs of climate modelers and SCM strategies. M. A. Pykkonen and L. Lorusso patiently typed and edited the numerous versions of this manuscript.
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