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Do we really need year-long runs?
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Classroom Contents
Contained Chaos - Ensemble Consistency Testing for the Community Earth System Model
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- 1 Intro
- 2 The National Center for Atmospheric Research
- 3 Community Earth System Model (CESM)
- 4 Need for Software Quality Assurance
- 5 Motivation
- 6 Evaluating the difference
- 7 Our new approach: Ensemble Consistency Test
- 8 Ensemble Consistency Test (ECT)
- 9 Creation of and comparison with ensemble
- 10 Quantity ensemble variability
- 11 Hypothesis Testing based on Principal Components
- 12 ECT Procedure
- 13 How wel does CAM ECT work?
- 14 Do we really need year-long runs?
- 15 Counterexample 1: HYDRO-BASEFLOW
- 16 Counterexample 2: RAND
- 17 UF-CAM-ECT and CAM-ECT
- 18 A highly accurate test leads to new challenges...
- 19 First step: identify affected variables
- 20 Next: convert source code to directed graph
- 21 Looking at the statistical details of the ECT.
- 22 The ECT scheme viewed as a series of RVS
- 23 Illustration of estimation bias of eigenvalues
- 24 Estimator and ensemble size effect on false positive rate
- 25 Alternative estimators for different ensemble sizes
