This work stems from BS’s doctoral research at CSU. During this time, he gratefully acknowledges funding from a NASA Graduate Fellowship on Global Change, Grant NGT-30231. Additional support for GF and WRC was provided by NSF Grant ATM-9529321. The comments of J. Wilczak, H. Gerber, S. Krueger, and one anonymous reviewer greatly improved the clarity of this manuscript. BS would also like to acknowledge fruitful interactions with the GCSS Working Group One members; conversations with Don Lenschow and Ilga Paluch also proved stimulating. The last stages of this work benefitted gratefully from BS’s sponsorship by the NCAR’s Advanced Study Program. Al Cooper is thanked for making it such a pleasant place to spend one’s time.
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