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Title: Mixture distributions in climatological research

Mixture distributions in climatological research Mixture distributions have had a long history in statistics where the central problem has been the decomposition of multiple distributions into their component parts and the estimation of the parameters of these sub-distributions. Here, in the climatological context however, the nature of these complex distributions is examined, without any attempt to decompose them, examining not only data distributions for a range of climatological variables, but their anomaly distributions as well. Histograms are easily generated, providing a rich visual display for intercomparison purposes. They serve to readily flag suspect or unusual data and can be suggestive of underlying mechanism. They can provide information which can be of considerable value for extreme value studies. Finally, an enormously rich statistical literature exists on the nature of distributions, physical processes leading to their development, and techniques for parameter estimation. Of particular relevance to model/data intercomparisons, there exist a broad range of tools for addressing the fundamental question: ``are two distributions statistically the same?``.
Authors:
Publication Date:
OSTI Identifier:OSTI ID: 10157942
Report Number(s):UCRL-JC--111263; CONF-9210334--3
ON: DE93014125
DOE Contract Number:W-7405-ENG-48
Resource Type:Conference
Resource Relation:Conference: 17. annual climate diagnostics conference,Norman, OK (United States),19-23 Oct 1992; Other Information: PBD: Dec 1992
Research Org:Lawrence Livermore National Lab., CA (United States)
Sponsoring Org:USDOE, Washington, DC (United States)
Country of Publication:United States
Language:English
Subject: 54 ENVIRONMENTAL SCIENCES; TROPOSPHERE; TEMPERATURE DISTRIBUTION; CLIMATE MODELS; MICROWAVE RADIATION; EARTH ATMOSPHERE; ATMOSPHERIC PRECIPITATIONS; DIAGRAMS; MONTHLY VARIATIONS 540110; BASIC STUDIES