Multidecadal climate variability in the north of the Eastern European Plain and the tree-ring growth response

2003 ◽

Author(s):

Glenn Patrick Juday ◽

Valerie Barber

Keyword(s):

Nineteenth Century ◽

North America ◽

Climate Variability ◽

Tree Ring ◽

Tree Growth ◽

White Spruce ◽

Boreal Region ◽

The North ◽

Interior Alaska ◽

Summer Temperatures

The two most important life functions that organisms carry out to persist in the environment are reproduction and growth. In this chapter we examine the role of climate and climate variability as controlling factors in the growth of one of the most important and productive of the North American boreal forest tree species, white spruce (Picea glauca [Moench] Voss). Because the relationship between climate and tree growth is so close, tree-ring properties have been used successfully for many years as a proxy to reconstruct past climates. Our recent reconstruction of nineteenth- century summer temperatures at Fairbanks based on white spruce tree-ring characteristics (Barber et al. in press) reveals a fundamental pattern of quasi-decadal climate variability. The values in this reconstruction of nineteenth-century Fairbanks summer temperatures are surprisingly warm compared to values in much of the published paleoclimatic literature for boreal North America. In this chapter we compare our temperature reconstructions with ring-width records in northern and south-central Alaska to see whether tree-growth signals in the nineteenth century in those regions are consistent with tree-ring characteristics in and near Bonanza Creek (BNZ) LTER (25 km southwest of Fairbanks) that suggest warm temperatures during the mid-nineteenth century. We also present a conceptual model of key limiting events in white spruce reproduction and compare it to a 39-year record of seed fall at BNZ. Finally, we derive a radial growth pattern index from white spruce at nine stands across Interior Alaska that matches recent major seed crop events in the BNZ monitoring period, and we identify dates after 1800 when major seed crops of white spruce, which are infrequent, may have been produced. The boreal region is characterized by a broad zone of forest with a continuous distribution across Eurasia and North America, amounting to about 17% of the earth’s land surface area (Bonan et al. 1992). The boreal region is often conceived of as a zone of relatively homogenous climate, but in fact a surprising diversity of climates are present. During the long days of summer, continental interior locations under persistent high-pressure systems experience hot weather that can promote extensive forest fires frequently exceeding 100 kilohectares (K ha). Summer daily maximum temperatures are cooled to a considerable degree in maritime portions of the boreal region affected by air masses that originate over the North Atlantic, North Pacific, or Arctic Oceans.

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A 2000-year record of lake ontogeny and climate variability from the north-eastern European Russian Arctic

The Holocene ◽

10.1177/0959683616660168 ◽

2016 ◽

Vol 27 (3) ◽

pp. 339-348 ◽

Cited By ~ 6

Author(s):

Tomi P Luoto ◽

Peter Kuhry ◽

Steffen Holzkämper ◽

Nadia Solovieva ◽

Angela E Self

Keyword(s):

Climate Variability ◽

Climate Warming ◽

Temperature Reconstruction ◽

Temperature Record ◽

Recent Sediment ◽

Eastern European ◽

Russian Arctic ◽

The North ◽

North Eastern ◽

Lake Ontogeny

A lake sediment record from the north-eastern European Russian Arctic was examined using palaeolimnological methods, including subfossil chironomid and diatom analysis. The objective of this study is to disentangle environmental history of the lake and climate variability during the past 2000 years. The sediment profile was divided into two main sections following changes in the lithology, separating the limno-telmatic phase between ~2000 and 1200 cal. yr BP and the lacustrine phase between ~1200 cal. yr BP and the present. Owing to the large proportion of semi-terrestrial chironomids and poor modern analogues, a reliable chironomid-based temperature reconstruction for the limno-telmatic phase was not possible. However, the lacustrine phase showed gradually cooling climate conditions from ~1200 cal. yr BP until ~700 cal. yr BP. The increase in stream chironomids within this sediment section indicates that this period may also have had increased precipitation that caused the adjacent river to overflow, subsequently transporting chironomids to the lacustrine basin. After a short-lived warm phase at ~700 cal. yr BP, the climate again cooled, and a progressive climate warming trend was evident from the most recent sediment samples, where the biological assemblages seem to have experienced an eutrophication-like response to climate warming. The temperature reconstruction showed more similarities with the climate development in the Siberian side of the Urals than with northern Europe. This study provides a characteristic archive of arctic lake ontogeny and a valuable temperature record from a remote climate-sensitive area of northern Russia.

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On North Pacific Multidecadal Climate Variability

Journal of Climate ◽

10.1175/jcli3719.1 ◽

2006 ◽

Vol 19 (12) ◽

pp. 2906-2915 ◽

Cited By ~ 28

Author(s):

Mojib Latif

Keyword(s):

Climate Variability ◽

North Pacific ◽

General Circulation ◽

Coupled Model ◽

Circulation Model ◽

Multidecadal Variability ◽

The North ◽

Atmosphere General Circulation Model ◽

Multidecadal Climate Variability ◽

The North Pacific

Abstract The multidecadal climate variability in the North Pacific region is investigated by using a 2000-yr-long integration with a coupled ocean–atmosphere general circulation model. It is shown that the multidecadal variability evolves largely independent of the variations in the tropical Pacific, so that this kind of multidecadal variability may be regarded as internal to the North Pacific. The coupled model results suggest that the multidecadal variability can be explained by the dynamical ocean response to stochastic wind stress forcing. Superimposed on the red background variability, a multidecadal mode with a period of about 40 yr is simulated by the coupled model. This mode can be understood through the concept of spatial resonance between the ocean and the atmosphere.

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Araucaria growth response to solar and climate variability in South Brazil

Annales Geophysicae ◽

10.5194/angeo-36-717-2018 ◽

2018 ◽

Vol 36 (3) ◽

pp. 717-729 ◽

Cited By ~ 7

Author(s):

Alan Prestes ◽

Virginia Klausner ◽

Iuri Rojahn da Silva ◽

Arian Ojeda-González ◽

Caren Lorensi

Keyword(s):

Climate Variability ◽

Tree Ring ◽

Growth Response ◽

Classical Method ◽

Southern Oscillation ◽

Ring Width ◽

The Sun ◽

Local Climate ◽

Climate Conditions ◽

Growth Series

Abstract. In this work, the Sun–Earth–climate relationship is studied using tree growth rings of Araucaria angustifolia (Bertol.) O. Kuntze collected in the city of Passo Fundo, located in the state of Rio Grande do Sul (RS), Brazil. These samples were previously studied by Rigozo et al. (2008); however, their main interest was to search for the solar periodicities in the tree-ring width mean time series without interpreting the rest of the periodicities found. The question arises as to what are the drivers related to those periodicities. For this reason, the classical method of spectral analysis by iterative regression and wavelet methods are applied to find periodicities and trends present in each tree-ring growth, in Southern Oscillation Index (SOI), and in annual mean temperature anomaly between the 24 and 44∘ S. In order to address the aforementioned question, this paper discusses the correlation between the growth rate of the tree rings with temperature and SOI. In each tree-ring growth series, periods between 2 and 7 years were found, possibly related to the El Niño/La Niña phenomena, and a ∼ 23-year period was found, which may be related to temperature variation. These novel results might represent the tree-ring growth response to local climate conditions during its lifetime, and to nonlinear coupling between the Sun and the local climate variability responsible to the regional climate variations. Keywords. History of geophysics (solar–planetary relationships) – meteorology and atmospheric dynamics (climatology; palaeoclimatology)

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Interrelationships of the North Atlantic multidecadal climate variability characteristics

Russian Journal of Earth Sciences ◽

10.2205/2018es000653 ◽

2019 ◽

Vol 19 (3) ◽

pp. 1-11

Author(s):

Roman V. Bekryaev

Keyword(s):

Climate Variability ◽

North Atlantic ◽

The North ◽

The North Atlantic ◽

Multidecadal Climate Variability

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TREE-RING EVIDENCE OF CLIMATE VARIABILITY OF LATE PLEISTOCENE DEGLACIATION IN THE NORTH AMERICAN MIDCONTINENT

10.1130/abs/2016am-278227 ◽

2016 ◽

Author(s):

William N. Mode ◽

◽

Irina P. Panyushkina ◽

Valerie N. Livina ◽

Steven W. Leavitt

Keyword(s):

Climate Variability ◽

Tree Ring ◽

Late Pleistocene ◽

North American ◽

The North

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Observed and Simulated Fingerprints of Multidecadal Climate Variability and Their Contributions to Periods of Global SST Stagnation

Journal of Climate ◽

10.1175/jcli-d-16-0443.1 ◽

2017 ◽

Vol 30 (2) ◽

pp. 721-737 ◽

Cited By ~ 13

Author(s):

Monika J. Barcikowska ◽

Thomas R. Knutson ◽

Rong Zhang

Keyword(s):

Climate Variability ◽

North Atlantic ◽

Climate Model ◽

Tropical Pacific ◽

Eastern Tropical Pacific ◽

Multidecadal Variability ◽

The North ◽

Tropical North Atlantic ◽

The North Atlantic ◽

Multidecadal Climate Variability

This study investigates spatiotemporal features of multidecadal climate variability using observations and climate model simulation. Aside from a long-term warming trend, observational SST and atmospheric circulation records are dominated by an almost 65-yr variability component. Although its center of action is over the North Atlantic, it manifests also over the Pacific and Indian Oceans, suggesting a tropical interbasin teleconnection maintained through an atmospheric bridge. An analysis shows that simulated internal climate variability in a coupled climate model (CSIRO Mk3.6.0) reproduces the main spatiotemporal features of the observed component. Model-based multidecadal variability includes a coupled ocean–atmosphere teleconnection, established through a zonally oriented atmospheric overturning circulation between the tropical North Atlantic and eastern tropical Pacific. During the warm SST phase in the North Atlantic, increasing SSTs over the tropical North Atlantic strengthen locally ascending air motion and intensify subsidence and low-level divergence in the eastern tropical Pacific. This corresponds with a strengthening of trade winds and cooling in the tropical central Pacific. The model’s derived component substantially shapes its global climate variability and is tightly linked to multidecadal variability of the Atlantic meridional overturning circulation (AMOC). This suggests potential predictive utility and underscores the importance of correctly representing North Atlantic variability in simulations of global and regional climate. If the observations-based component of variability originates from internal climate processes, as found in the model, the recently observed (1970s–2000s) North Atlantic warming and eastern tropical Pacific cooling might presage an ongoing transition to a cold North Atlantic phase with possible implications for near-term global temperature evolution.

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