Enhanced temperature variability in high-altitude climate change

Ohmura, Atsumu

doi:10.1007/s00704-012-0687-x

Cited by 164 publications

(118 citation statements)

References 14 publications

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“…Two tailed p values are given, and the significant trends, judged using 95 % CI, are set in bold The significant trends, judged using 95% CI, are set in bold to-noise ratio is not big enough, then the altitudinal amplification would be undetectable. The signal from altitude effect can be contaminated by the noise from specific factors such as temperature inversion (Beniston and Rebetez 1996;Ohmura 2012) and urbanization effect (Pepin and Lundquist 2008;Ren et al 2008) characteristic of low elevation stations. Similarly, the high-elevation region does not always have a faster warming than its lower counterpart.…”

Section: Discussionmentioning

confidence: 99%

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Recent warming amplification over high elevation regions across the globe

2013

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Despite numerous studies in recent decades, our understanding of whether warming amplification is prevalent in high-elevation regions remains uncertain. In this work, on the basis of annual mean temperature series of 2,367 stations around the globe, we examine both altitudinal amplification and regional amplification in the high elevation regions across the globe using new methodology. We develop the function equations of warming components of altitude, latitude and longitude and station warming rates for individual stations within a high-elevation region based on basic mathematic and physical principles, and find a significant altitudinal amplification trend for the Tibetan Plateau, Loess Plateau, Yunnan-Guizhou Plateau, Alps, United States Rockies, Appalachian Mountains, South American Andes and Mongolian Plateau. At the same time, we detect a greater warming for four high-elevation regions than their low elevation counterparts for the paired regions available. These suggest that warming amplification in high-elevation regions is an intrinsic feature of recent global warming.

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Section: Discussionmentioning

confidence: 99%

“…This uncertainty is generally attributed to inadequacies in observations at high altitudes (Rangwala and Miller 2012;Ohmura 2012), data incompatibility (Ohmura 2012), methodological choices (Liu et al 2009) and region-specific conditions Liu et al 2009;Ohmura 2012). However there may be some fundamental aspects that have been overlooked.…”

Section: Introductionmentioning

confidence: 99%

Recent warming amplification over high elevation regions across the globe

2013

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“…However, many glaciers are shrinking worldwide and the rate at 5 which they are changing has accelerated over the last 2-3 decades (Oerlemans 2005, Barry 6 2006, Haeberli et al, 2007). This is particularly the case in alpine regions where increases in 7 air temperature will be higher than at lower altitudes (Beniston, 2003), primarily due to 8 feedbacks between diabatic processes and the surface energy balance, which manifests in an 9 amplification of regional climate signals (Ohmura, 2012). For larger glaciers that are 10 receding, an initial increase in glacial meltwater generation may occur due to increased 11 energy inputs, earlier disappearance of reflective snow cover and exposure of lower albedo 12 ice (Hannah et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

The use of invertebrates as indicators of environmental change in alpine rivers and lakes

Khamis

Hannah

Brown

et al. 2014

Science of The Total Environment

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1In alpine regions climatic change will alter the balance between water sources (rainfall, ice-2 melt, snowmelt, and groundwater) for aquatic systems, particularly modifying the relative 3 contributions of meltwater, groundwater and rain to both rivers and lakes. Whilst these 4 changes are expected to have implications for alpine aquatic ecosystems, little is known about 5 potential ecological tipping points and associated indicator taxa. Within the EU-FP7 6 ACQWA project we examined changes in biotic communities along a gradient of glacier 7 influence for two study systems; (1) a stream network in the French Pyrénées and (2) a 8 network of lakes in the Italian Alps, with the aim of identifying potential indicator taxa 9 (macroinvertebrates and zooplankton) of glacier retreat in these environments. To assess 10 parallels in biotic responses across streams and lakes, both primary data and findings from 11 other publications were synthesized. Using TITAN (Threshold Indicator Taxa ANalysis) 12 threshold changes in community composition of river taxa were identified at <5.1% glacier 13 cover and <66.6% meltwater contribution. Below this point the loss of cold stenothermic 14 benthic invertebrate taxa, Diamesa spp. and the Pyrenean endemic Rhyacophila angelieri was 15 apparent. Some generalist taxa including Protonemura sp., Perla grandis, Baetis alpinus, 16Rhithrogena loyolaea and Microspectra sp. increased when glacier cover was < 2.7 % and < 17 52 % meltwater. Patterns were not as distinct for the alpine lakes, due to fewer sampling 18 sites; however, Daphnia longispina grp. and the benthic invertebrate groups Plectopera and 19Planaria were identified as potential indictors. While further work is required to assess 20 potential indicator taxa for alpine lake systems findings from alpine river systems were 21 consistent between methods for assessing glacier influence (meltwater contribution/glacier 22 cover). Hence, it is clear that this approach (TITAN) could become a useful a management 23 tool, enabling: (i) the identification of taxa particularly sensitive to glacier retreat; and (ii) 24 conservation efforts/resources to be better directed in alpine aquatic systems. 25

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“…Выделение сезонов для Кольского п-ова: зима -ноябрь-март, весна -апрель и май, лето -июнь, июль, август, осень -сентябрь и октябрь (Яковлев, 1961 Согласно теоретическим оценкам и наблюдениям, скорость потепления с высотой не остается постоянной. Так, например, в работе (Ohmura, 2012) после обработки измерений на 56 горных станциях, объединенных в 18 регио-нальных групп внутри основных горных массивов, было обнаружено, что в 65% групп рост температуры вблизи вершин и хребтов идет быстрее, чем у их подножий. В 25 % -наибольшее повышение наблюдается на средних уровнях и в 15 % -у подножия гор.…”

Section: результаты и обсуждениеunclassified

“…Из закона излучения Стефана-Больцмана следует, что верхние ярусы гор с меньшей температурой воздуха более чувстви-тельны к изменению радиационных потоков, чем их подножия (Ohmura, 2012). 3.…”

Section: результаты и обсуждениеunclassified

A Comparison of Air Temperature Trends in the Khibiny Mountains and Over Surrounding Plains

Демин¹,

Volkov²

2017

FAC

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Резюме. Рассмотрены изменения температуры на горе Ловчорр в Хибин-ском горном массиве (1091 м н.у.м.) в 1965 -2015 гг. Температура воздуха повышается во все сезоны со скоростью от 0.22 до 0.54°C/10 лет. В наиболь-шей степени это потепление проявляется весной, осенью и в первой половине зимы. Рост минимальных температур происходит быстрее, чем максималь-ных. При сравнении значений коэффициентов регрессии, отражающих тренд средних сезонных температур, статистически значимых различий в оценках для горы Ловчорр и для ближайших равнинных станций не обнаружено ни в каком из сезонов. Это позволяет говорить о примерно одинаковой скорости современного потепления.Ключевые слова. Горная метеорология, горный климат, изменение кли-мата, Хибины. Summary. Temperature variations on the top of the Lovchorr mountain (Khibiny, 1091 m a.s.l.) in 1965-2015 were studied. Air temperature increases in all the seasons by 0.22 -0.54°C per decade. The warming rate is the most pronounced in spring, autumn and in the first half of winter. The growth rate of minimal temperatures is higher than of maximal temperatures. No statistically significant differences in slope of linear regression, i.e., in trends of seasonal temperature means, were found for series of the Lovchrorr mountain and those over surrounding plain stations. This indicates the similar rate of modern warming. A COMPARISON OF AIR TEMPERATURE TRENDS IN THE KHIBINY MOUNTAINS AND OVER SURROUNDING PLAINS

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Enhanced temperature variability in high-altitude climate change

Cited by 164 publications

References 14 publications

Recent warming amplification over high elevation regions across the globe

Recent warming amplification over high elevation regions across the globe

The use of invertebrates as indicators of environmental change in alpine rivers and lakes

A Comparison of Air Temperature Trends in the Khibiny Mountains and Over Surrounding Plains

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