A climate shift in seasonal values of meteorological and hydrological parameters for Northeastern Asia

Savelieva, N. I.; Semiletov, I. P.; Vasilevskaya, L.N.; Pugach, S. P.

doi:10.1016/s0079-6611(00)00039-2

Cited by 91 publications

(73 citation statements)

References 16 publications

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“…During the second half of the 20th century, Eurasian Arctic river runoff increased at an average rate of ∼0.60-0.74 mm/y (44)(45)(46), likely increasing the delivery of surface-derived OC into estuaries. Based on the relationship between lignin phenol Δ 14 C values and runoff (Δ 14 C = 1.6018 × runoff − 655; Fig.…”

Section: Contribution Of Surface and Deep Permafrost Carbon To Bulkmentioning

confidence: 99%

Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins

Feng

Vonk

Dongen

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

195

226

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Mobilization of Arctic permafrost carbon is expected to increase with warming-induced thawing. However, this effect is challenging to assess due to the diverse processes controlling the release of various organic carbon (OC) pools from heterogeneous Arctic landscapes. Here, by radiocarbon dating various terrestrial OC components in fluvially and coastally integrated estuarine sediments, we present a unique framework for deconvoluting the contrasting mobilization mechanisms of surface vs. deep (permafrost) carbon pools across the climosequence of the Eurasian Arctic. Vascular plant-derived lignin phenol 14 C contents reveal significant inputs of young carbon from surface sources whose delivery is dominantly controlled by river runoff. In contrast, plant wax lipids predominantly trace ancient (permafrost) OC that is preferentially mobilized from discontinuous permafrost regions, where hydrological conduits penetrate deeper into soils and thermokarst erosion occurs more frequently. Because river runoff has significantly increased across the Eurasian Arctic in recent decades, we estimate from an isotopic mixing model that, in tandem with an increased transfer of young surface carbon, the proportion of mobilized terrestrial OC accounted for by ancient carbon has increased by 3–6% between 1985 and 2004. These findings suggest that although partly masked by surface carbon export, climate change-induced mobilization of old permafrost carbon is well underway in the Arctic.

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Section: Contribution Of Surface and Deep Permafrost Carbon To Bulkmentioning

confidence: 99%

Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins

Feng

Vonk

Dongen

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

195

226

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“…Evidence of increasing arctic river discharge has been reported in several recent publications, with changes most evident during the low-flow period from November through April (7,(9)(10)(11). However, analyses of trends have emphasized different time periods and areas of the Arctic (12).…”

mentioning

confidence: 95%

Increasing River Discharge to the Arctic Ocean

Peterson

Holmes

McClelland

et al. 2002

Science

1,357

1,000

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Synthesis of river-monitoring data reveals that the average annual discharge of fresh water from the six largest Eurasian rivers to the Arctic Ocean increased by 7% from 1936 to 1999. The average annual rate of increase was 2.0 ± 0.7 cubic kilometers per year. Consequently, average annual discharge from the six rivers is now about 128 cubic kilometers per year greater than it was when routine measurements of discharge began. Discharge was correlated with changes in both the North Atlantic Oscillation and global mean surface air temperature. The observed large-scale change in freshwater flux has potentially important implications for ocean circulation and climate.

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“…The third assessment report of the Intergovernmental Panel on Climate Change (IPCC) proposed that global warming may have caused seasonal shifts in runoff, with a larger proportion of runoff occurring in winter, and a smaller proportion occurring in spring, in cool temperate (Georgiyevsky et al 1996) and mountainous (Starosoloszky and Gauzer 1998) regions (McCarthy et al 2001). In the arctic and sub-arctic regions of Siberia, beginning in the 1970s (up to the 1990s), the total annual runoff of Siberian rivers into the Arctic increased by 4.5% in comparison with an earlier period of comparable length (1940s-1960s), because of the increases in winter runoff thought to be connected to climatic change (Savelieva et al 2000). In middlelatitude mountainous regions at high altitudes, however, there is little empirical information available, and long-term successive data have been too limited to allow the detection of an increase in winter runoff due to climatic change.…”

Section: Introductionmentioning

confidence: 99%

NOTES AND CORRESPONDENCE; Increasing Winter Runoff in a Middle-Latitude Mountain Area of Central Japan

Wada¹,

Kawada²,

Kawamura

et al. 2004

Journal of the Meteorological Society of Japan

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Meteorological and hydrological data were analysed, over 37 years during the period from 1965 to 2001, recorded by the Kurobe Dam meteorological observatory, which is located in a nature-reserved mountainous area within a heavy-snowfall region of central Japan. The analysis demonstrated that both winter runoff and air temperature increased significantly during this period. The interannual variation of winter runoff was governed not only by precipitation, but also by air temperature. The significant increasing trends in air temperature were also found at the adjacent JMA meteorological stations, showing a high correlation with air temperature observed by the Kurobe Dam.

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A climate shift in seasonal values of meteorological and hydrological parameters for Northeastern Asia

Cited by 91 publications

References 16 publications

Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins

Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins

Increasing River Discharge to the Arctic Ocean

NOTES AND CORRESPONDENCE; Increasing Winter Runoff in a Middle-Latitude Mountain Area of Central Japan

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