Tree ring-dated fluctuation history of Midui glacier since the little ice age in the southeastern Tibetan plateau

The maximum Holocene extent of glaciers in the study area is marked by late Neoglacial (Little Ice Age) terminal moraines. Moraine stratigraphy and 14C dates from a small number of sites suggest that glacier advance, almost as extensive as that of the late Neoglacial, occurred about 2500 14C years BP, and that late Neoglacial advance began well before 770 14C years BP (or the thirteenth century A.D.); glacier termini then stood close to the position of the climax moraines for several centuries. Dates of stabilization of end moraines at 16 glaciers were determined by dendrochronology, with tree-ring counts corrected for sampling errors and ecesis. Most terminal moraines date from 1860 to 1900. Many recessional moraines were formed between 1900 and 1940, coincident with a regionally documented phase of cooler and wetter climate. The proposed chronology is similar to results from elsewhere in the Canadian Cordillera.

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Ages of major Little Ice Age glacier fluctuations on the southeast Tibetan Plateau derived from tree-ring-based moraine dating

Palaeogeography Palaeoclimatology Palaeoecology ◽

10.1016/j.palaeo.2015.01.002 ◽

2015 ◽

Vol 422 ◽

pp. 1-10 ◽

Cited By ~ 16

Author(s):

Philipp Hochreuther ◽

David Loibl ◽

Jakob Wernicke ◽

Haifeng Zhu ◽

Jussi Grießinger ◽

...

Keyword(s):

Tibetan Plateau ◽

Tree Ring ◽

Little Ice Age ◽

Ice Age ◽

Glacier Fluctuations ◽

Southeast Tibetan Plateau

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Climate-induced treeline mortality during the termination of the Little Ice Age in the Greater Yellowstone Ecoregion, USA

The Holocene ◽

10.1177/09596836211011656 ◽

2021 ◽

pp. 095968362110116

Author(s):

Maegen L Rochner ◽

Karen J Heeter ◽

Grant L Harley ◽

Matthew F Bekker ◽

Sally P Horn

Keyword(s):

Climate Change ◽

Tree Ring ◽

Little Ice Age ◽

Climate Changes ◽

Frost Damage ◽

Ice Age ◽

Spatial And Temporal Variability ◽

Whitebark Pine ◽

Engelmann Spruce ◽

Greater Yellowstone

Paleoclimate reconstructions for the western US show spatial variability in the timing, duration, and magnitude of climate changes within the Medieval Climate Anomaly (MCA, ca. 900–1350 CE) and Little Ice Age (LIA, ca. 1350–1850 CE), indicating that additional data are needed to more completely characterize late-Holocene climate change in the region. Here, we use dendrochronology to investigate how climate changes during the MCA and LIA affected a treeline, whitebark pine ( Pinus albicaulis Engelm.) ecosystem in the Greater Yellowstone Ecoregion (GYE). We present two new millennial-length tree-ring chronologies and multiple lines of tree-ring evidence from living and remnant whitebark pine and Engelmann spruce ( Picea engelmannii Parry ex. Engelm.) trees, including patterns of establishment and mortality; changes in tree growth; frost rings; and blue-intensity-based, reconstructed summer temperatures, to highlight the terminus of the LIA as one of the coldest periods of the last millennium for the GYE. Patterns of tree establishment and mortality indicate conditions favorable to recruitment during the latter half of the MCA and climate-induced mortality of trees during the middle-to-late LIA. These patterns correspond with decreased growth, frost damage, and reconstructed cooler temperature anomalies for the 1800–1850 CE period. Results provide important insight into how past climate change affected important GYE ecosystems and highlight the value of using multiple lines of proxy evidence, along with climate reconstructions of high spatial resolution, to better describe spatial and temporal variability in MCA and LIA climate and the ecological influence of climate change.

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Mangrove dynamics in the southwestern Caribbean since the ‘Little Ice Age’: A history of human and natural disturbances

The Holocene ◽

10.1177/0959683610365941 ◽

2010 ◽

Vol 20 (6) ◽

pp. 849-861 ◽

Cited By ~ 27

Author(s):

Catalina González ◽

Ligia Estela Urrego ◽

José Ignacio Martínez ◽

Jaime Polanía ◽

Yusuke Yokoyama

Keyword(s):

Little Ice Age ◽

Ice Age ◽

Natural Disturbances ◽

History Of ◽

Mangrove Dynamics

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Neoglacial history of Robson Glacier, British Columbia

Canadian Journal of Earth Sciences ◽

10.1139/cjes-2016-0187 ◽

2017 ◽

Vol 54 (11) ◽

pp. 1153-1164 ◽

Cited By ~ 2

Author(s):

B.H. Luckman ◽

M.H. Masiokas ◽

K. Nicolussi

Keyword(s):

British Columbia ◽

Little Ice Age ◽

Ice Age ◽

Tree Line ◽

Canadian Rockies ◽

The Holocene ◽

Forest Sites ◽

History Of ◽

Subfossil Wood ◽

Glacier Advance

As glaciers in the Canadian Rockies recede, glacier forefields continue to yield subfossil wood from sites overridden by these glaciers during the Holocene. Robson Glacier in British Columbia formerly extended below tree line, and recession over the last century has progressively revealed a number of buried forest sites that are providing one of the more complete records of glacier history in the Canadian Rockies during the latter half of the Holocene. The glacier was advancing ca. 5.5 km upvalley of the Little Ice Age terminus ca. 5.26 cal ka BP, at sites ca. 2 km upvalley ca. 4.02 cal ka BP and ca. 3.55 cal ka BP, and 0.5–1 km upvalley between 1140 and 1350 A.D. There is also limited evidence based on detrital wood of an additional period of glacier advance ca. 3.24 cal ka BP. This record is more similar to glacier histories further west in British Columbia than elsewhere in the Rockies and provides the first evidence for a post-Hypsithermal glacier advance at ca. 5.26 cal ka BP in the Rockies. The utilization of the wiggle-matching approach using multiple 14C dates from sample locations determined by dendrochronological analyses enabled the recognition of 14C outliers and an increase in the precision and accuracy of the dating of glacier advances.

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A 400-year tree-ring δ18O chronology for the southeastern Tibetan Plateau: Implications for inferring variations of the regional hydroclimate

Global and Planetary Change ◽

10.1016/j.gloplacha.2013.02.005 ◽

2013 ◽

Vol 104 ◽

pp. 23-33 ◽

Cited By ~ 41

Author(s):

Xiaohong Liu ◽

Xiaomin Zeng ◽

Steven W. Leavitt ◽

Wenzhi Wang ◽

Wenling An ◽

...

Keyword(s):

Tibetan Plateau ◽

Tree Ring ◽

Southeastern Tibetan Plateau

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Lichenometry and Schmidt hammer tests in the Kaunertal glacier foreland (Ötztal Alps) during the AMADEE-15 Mars Mission Simulation

Miscellanea Geographica ◽

10.1515/mgrsd-2017-0027 ◽

2017 ◽

Vol 21 (4) ◽

pp. 190-196

Author(s):

Jan Czempiński ◽

Maciej Dąbski

Keyword(s):

Little Ice Age ◽

Ice Age ◽

Schmidt Hammer ◽

Mars Mission ◽

Frontal Part ◽

Glacier Foreland ◽

Glacier Front ◽

Relative Stabilization ◽

History Of ◽

Mission Simulation

AbstractThe aim of this article is to show the results of the lichenometrical and Schmidt hammer measurements performed in 2015 during the AMADEE-15 Mars Mission Simulation in the Ötztal Alps in order to test the capabilities of analogue astronauts and collect information on the geomorphic history of the study area since the Little Ice Age (LIA). The results obtained differ significantly from our expectations, which we attribute to differences in the field experience of participants and the astronauts’ technical limitations in terms of mobility. However, the experiments proved that these methods are within the range of the astronauts’ capabilities. Environmental factors, such as i) varied petrography, ii) varied number of thalli in test polygons, and iii) differences in topoclimatic conditions between the LIA moraine and the glacier front, further inhibited simple interpretation. The LIA maximum of the Kaunertal glacier occurred in AD 1850, and relative stabilization of the frontal part of the rock glacier occurred in AD 1711.

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A 406-year non-growing-season precipitation reconstruction in the southeastern Tibetan Plateau

Climate of the Past ◽

10.5194/cp-17-2381-2021 ◽

2021 ◽

Vol 17 (6) ◽

pp. 2381-2392

Author(s):

Maierdang Keyimu ◽

Zongshan Li ◽

Bojie Fu ◽

Guohua Liu ◽

Fanjiang Zeng ◽

...

Keyword(s):

Tibetan Plateau ◽

Tree Ring ◽

Tree Growth ◽

Ring Width ◽

Growing Season ◽

Climatic Conditions ◽

Forest Growth ◽

Drought Severity ◽

Precipitation Reconstruction ◽

Southeastern Tibetan Plateau

Abstract. Trees record climatic conditions during their growth, and tree rings serve as proxy to reveal the features of the historical climate of a region. In this study, we collected tree-ring cores of hemlock forest (Tsuga forrestii) from the northwestern Yunnan area of the southeastern Tibetan Plateau (SETP) and created a residual tree-ring width (TRW) chronology. An analysis of the relationship between tree growth and climate revealed that precipitation during the non-growing season (NGS) (from November of the previous year to February of the current year) was the most important constraining factor on the radial tree growth of hemlock forests in this region. In addition, the influence of NGS precipitation on radial tree growth was relatively uniform over time (1956–2005). Accordingly, we reconstructed the NGS precipitation over the period spanning from 1600–2005. The reconstruction accounted for 28.5 % of the actual variance during the common period of 1956–2005. Based on the reconstruction, NGS was extremely dry during the years 1656, 1694, 1703, 1736, 1897, 1907, 1943, 1982 and 1999. In contrast, the NGS was extremely wet during the years 1627, 1638, 1654, 1832, 1834–1835 and 1992. Similar variations of the NGS precipitation reconstruction series and Palmer Drought Severity Index (PDSI) reconstructions of early growing season from surrounding regions indicated the reliability of the present reconstruction. A comparison of the reconstruction with Climate Research Unit (CRU) gridded data revealed that our reconstruction was representative of the NGS precipitation variability of a large region in the SETP. Our study provides the first historical NGS precipitation reconstruction in the SETP which enriches the understanding of the long-term climate variability of this region. The NGS precipitation showed slightly increasing trend during the last decade which might accelerate regional hemlock forest growth.

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