| Session 9B | 
|  | Observed changes in climate - II | 
|  | Chair: Aiguo Dai, NCAR, Boulder, CO 
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|  | 10:30 AM | 9B.1 | Snowfall changes in California's Sierra Nevada Mountains John Christy, Univ. of Alabama, Huntsville, AL; and J. J. Hnilo
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|  | 10:45 AM | 9B.2 | A Practical Guide for Detecting Abrupt Changes in Time Series  Aiguo Dai, NCAR, Boulder, CO
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|  | 11:00 AM | 9B.3 | On improving NOAA's climate normals: an introduction to ‘optimal normals' of temperature    Anthony Arguez, NOAA/NESDIS/NCDC, Asheville, NC; and R. S. Vose
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|  | 11:15 AM | 9B.4 | Inferring Significance of Trend and Adaptive Detrending of Complex Climate Time Series Wen-Wen Tung, Purdue University, West Lafayette, IN; and J. Gao and J. Hu
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|  | 11:30 AM | 9B.5 | False spring occurrence over the southeastern United States, 1901 – 2007  Garrett P. Marino, Massachusetts Institute of Technology, Cambridge, MA; and D. Kaiser
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|  | 11:45 AM | 9B.6 | Observed and Modeled Surface-based Temperature Inversions in Alaska: Trends and Variability Stefanie M. Bourne, Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK; and U. S. Bhatt, J. Zhang, and R. Thoman
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