Journal ArticleDOI
Kalman Filter Analysis in Dendroclimatology
H Hans Visser,J Jaap Molenaar +1 more
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TLDR
In this article, the use of the Kalman filter in the analysis of tree-ring data is summarized, and a method for the selection of predictor variables is proposed, which takes into account the special features of time-dependent regression models.Abstract:
SUMMARY The use of the Kalman filter in the analysis of tree-ring data is summarized. By use of this filter technique, the traditional multiple regression models can be modified to cover linear models with time-dependent coefficients. In that way changes in tree response to weather variations could be detected, possibly indicating anthropogenic influences. The filtering and smoothing operations of the filter are illustrated using simulated tree-ring series. A method for the selection of predictor variables is proposed, which takes into account the special features of time-dependent regression models. Furthermore, the consequences of highly correlated predictors are discussed. An application is given to a ring-width series of a European silver fir from Bad Herrenalb (F.R.G.). The method appears suitable for dealing with both gradual changes and sudden shocks in tree response.read more
Citations
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Journal ArticleDOI
A Well-Verified, Multiproxy Reconstruction of the Winter North Atlantic Oscillation Index since a.d. 1400*
TL;DR: In this paper, a well-verified, multiproxy reconstruction of the winter North Atlantic Oscillation (NAO) index is described that can be used to examine the variability of the NAO prior to twentieth century greenhouse forcing.
BookDOI
Ecology and decline of red spruce in the eastern United States.
TL;DR: In this paper, the authors focus on the recent decline of red spruce and the role of acid rain and associated air pollutants in this decline, and summarize a large body of recent research on this important environmental issue.
Journal ArticleDOI
Climate-tree-growth relationships of Scots pine stands (Pinus sylvestris L.) exposed to soil dryness
TL;DR: In this paper, the impact of climatic factors on radial tree growth (total ringwidth and latewood width) of stunted Scots pine trees (Pinus sylvestris L.) exposed to soil dryness and nutrient deficiency on a dolomite substrate was investigated.
Journal ArticleDOI
Piecing together the past: statistical insights into paleoclimatic reconstructions
Martin P. Tingley,Martin P. Tingley,Martin P. Tingley,Peter F. Craigmile,Murali Haran,Murali Haran,Bo Li,Elizabeth Mannshardt,Elizabeth Mannshardt,Elizabeth Mannshardt,Bala Rajaratnam,Bala Rajaratnam +11 more
TL;DR: This article considers the challenge of inferring a climate process through space and time from overlapping instrumental and climate sensitive proxy time series that are assumed to be well dated – an assumption that is likely only reasonable for certain proxies over at most the last few millennia.
Journal ArticleDOI
Reconstructing ENSO: the influence of method, proxy data, climate forcing and teleconnections
Rob Wilson,Rob Wilson,Edward R. Cook,Rosanne D'Arrigo,Nadja Riedwyl,Michael N. Evans,Alexander W. Tudhope,Rob Allan +7 more
TL;DR: In this article, the authors compare three independent NINO3.4 sea surface temperature (SST) reconstructions using data from (1) the central Pacific (corals), (2) the TexMex region of the USA (tree rings) and (3) other regions in the Tropics (CORals and an ice core) which are teleconnected with central Pacific SSTs in the 20th century.
References
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Book
Stochastic Processes and Filtering Theory
TL;DR: In this paper, a unified treatment of linear and nonlinear filtering theory for engineers is presented, with sufficient emphasis on applications to enable the reader to use the theory for engineering problems.
Book
Tree Rings and Climate
TL;DR: In this paper, a summary of basic dendrochronology, especially its application to Beams from these activities that various statistical methods such as they are covered, is given.
Journal ArticleDOI
Maximum likelihood estimates of linear dynamic systems
TL;DR: In this paper, the problem of estimating the states of linear dynamic systems in the presence of additive Gaussian noise is considered and the results for discrete systems are formally extended to continuous systems.
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The smoothing spline : a new approach to standardizing forest interior tree-ring width series for dendroclimatic studies
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