TY - JOUR
T1 - Logit-normal mixed model for Indian monsoon precipitation
AU - Dietz, L. R.
AU - Chatterjee, S.
N1 - Publisher Copyright:
© 2014 Author(s).
PY - 2014/9/12
Y1 - 2014/9/12
N2 - Describing the nature and variability of Indian monsoon precipitation is a topic of much debate in the current literature. We suggest the use of a generalized linear mixed model (GLMM), specifically, the logit-normal mixed model, to describe the underlying structure of this complex climatic event. Four GLMM algorithms are described and simulations are performed to vet these algorithms before applying them to the Indian precipitation data. The logit-normal model was applied to light, moderate, and extreme rainfall. Findings indicated that physical constructs were preserved by the models, and random effects were significant in many cases. We also found GLMM estimation methods were sensitive to tuning parameters and assumptions and therefore, recommend use of multiple methods in applications. This work provides a novel use of GLMM and promotes its addition to the gamut of tools for analysis in studying climate phenomena.
AB - Describing the nature and variability of Indian monsoon precipitation is a topic of much debate in the current literature. We suggest the use of a generalized linear mixed model (GLMM), specifically, the logit-normal mixed model, to describe the underlying structure of this complex climatic event. Four GLMM algorithms are described and simulations are performed to vet these algorithms before applying them to the Indian precipitation data. The logit-normal model was applied to light, moderate, and extreme rainfall. Findings indicated that physical constructs were preserved by the models, and random effects were significant in many cases. We also found GLMM estimation methods were sensitive to tuning parameters and assumptions and therefore, recommend use of multiple methods in applications. This work provides a novel use of GLMM and promotes its addition to the gamut of tools for analysis in studying climate phenomena.
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U2 - 10.5194/npg-21-939-2014
DO - 10.5194/npg-21-939-2014
M3 - Article
AN - SCOPUS:84907910069
SN - 1023-5809
VL - 21
SP - 939
EP - 953
JO - Nonlinear Processes in Geophysics
JF - Nonlinear Processes in Geophysics
IS - 5
ER -