Favorable climatic regime for maintaining the present-day geometry of the Gregoriev Glacier, Inner Tien Shan

Fujita, Koji; Takeuchi, Nozomu; Никитин, С. А.; Surazakov, A. B.; Okamoto, S.; Aizen, Vladimir; Kubota, Jumpei

doi:10.5194/tc-5-539-2011

Cited by 50 publications

(49 citation statements)

References 23 publications

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“…Since 1997, the climate was the most favourable during measured period due to slight precipitation decrease only, but a temperature decrease during summer months (table 4). Hence, the glaciers might be currently close steadystate in this region, which was also found in a study about Gregoriev ice cap situated close to the Tien Shan station (Fujita et al 2011). However, it has to be considered that glacier area changes as investigated in this study can not directly linked to the climate signal as the area shows a delayed signal to climate only; and the response time of the polythermal or even cold glaciers in this region is likely several decades.…”

Section: Climatic Considerationsmentioning

confidence: 76%

Glacier characteristics and changes in the Sary-Jaz River Basin (Central Tien Shan, Kyrgyzstan) – 1990–2010

Osmonov

Bolch

Chen

et al. 2013

Remote Sensing Letters

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The water discharge from the heavily glacierized Sary-Jaz River Basin (Eastern Kyrgyzstan) is of high importance for the very arid Tarim Basin located in Xinjiang (north-western China). We investigated glacier changes in the entire Sary-Jaz River Basin, which covers a large part of the Central Tien Shan, for the period from 1990 to 2010 based on Landsat 'TM'/'ETM+'data. We found 1310 glaciers (>0.1 km²), which covered 2055 ± 41.1 km² ( 18% of the entire basin) in 1990. The glaciers shrank by 77.1 ± 57.1 km² (3.7 ± 2.7%) until 2010. This is considerably lower than in most other ranges of the Tien Shan. The lowest insignificant area loss (−1.5 ± 2.7%) was found in the eastern part of the basin where the largest glaciers and highest peaks are situated. Debris-covered glaciers shrank significantly less than clean-ice glaciers of comparable size. We also identified a few advancing glaciers which show surge characteristics. Climate data from the Tien Shan weather station (3614 m asl.) close to the study region showed no significant long-term trend. Remote Sensing Letters, 2013 Vol. 4, No. 8, 725-734, http The water discharge from the heavily glacierized Sary-Jaz River Basin (Eastern Kyrgyzstan) is of high importance for the very arid Tarim Basin located in Xinjiang (north-western China). We investigated glacier changes in the entire Sary-Jaz River Basin, which covers a large part of the Central Tien Shan, for the period from 1990 to 2010 based on Landsat 'TM'/'ETM+'data. We found 1310 glaciers (>0.1 km 2 ), which covered 2055 ± 41.1 km 2 (∼18% of the entire basin) in 1990. The glaciers shrank by 77.1 ± 57.1 km 2 (3.7 ± 2.7%) until 2010. This is considerably lower than in most other ranges of the Tien Shan. The lowest insignificant area loss (−1.5 ± 2.7%) was found in the eastern part of the basin where the largest glaciers and highest peaks are situated. Debris-covered glaciers shrank significantly less than clean-ice glaciers of comparable size. We also identified a few advancing glaciers which show surge characteristics. Climate data from the Tien Shan weather station (3614 m asl.) close to the study region showed no significant long-term trend.

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Section: Climatic Considerationsmentioning

confidence: 76%

Glacier characteristics and changes in the Sary-Jaz River Basin (Central Tien Shan, Kyrgyzstan) – 1990–2010

Osmonov

Bolch

Chen

et al. 2013

Remote Sensing Letters

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“…Even for Central Asia, these values are exceptional. Outside the Pamir, such arid conditions can only be found in the most central parts of the Tian Shan, where mean precipitation sums of 296 mm/a were recorded at an elevation of 3614 m asl (Fujita et al, 2011). Earlier applications of the HBV-ETH model (Hagg et al, 2006) have yielded basin values for precipitation of more than 500 mm in the Eastern Tian Shan (Glacier No.…”

Section: Discussionmentioning

confidence: 99%

Glacier and runoff changes in the Rukhk catchment, upper Amu-Darya basin until 2050

Hagg

Hoelzle

Wagner³

et al. 2013

Global and Planetary Change

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A conceptual hydrological model was set up in the upper Panj catchment, the main tributary of Amu-Darya river. After a manual calibration procedure involving model runs with different restrictions, the model reproduced both daily hydrographs of Tanimas river at the Rukhk gauging station (NSE = 0.86) and the snow water equivalent of the Irkht station (R 2 = 0.85) in a very satisfactory way. Based on two glacier inventories from the mid-20th century (WGI, World Glacier Inventory) and from 2003 (GLIMS, Global Land Ice Measurements from Space), a simple parameterization scheme based on steady state conditions was applied to infer the ice volumes and glacier areas for these different time periods. Assuming temperature rises of 2.2°C and 3.1°C, which mark the extreme values of regional climate scenarios, the same method was used to extrapolate glacierization to the year 2050. The results show that these temperature rises will reduce the current glacier extent of 431 km 2 by 36% and 45%, respectively. To assess future changes in water availability, the hydrological model input was modified according to the regional climate scenarios and the resulting glacier changes. The use of an elevation distributed deglacierization pattern is a clear improvement over methods used previously, where the impact on runoff was tested by excluding either the lower half or the total glacier area. The runoff scenarios reveal only a slight reduction in annual runoff, because the glacier area decrease is almost balanced out by enhanced melt rates. However, there is an important seasonal shift of water resources from summer to spring, unfavorably affecting agriculture and irrigation in the lowlands.

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“…Particularly, if the impurities were exposed at the glacier's surface during the melting season, glacial melting would be further accelerated. This could occur if snow melting resulted in the exposure of ILAIs at the glacier's surface and/or if the melting season was reinforced and expanded due to a warming climate (Fujita 2007;Fujita et al, 2011). It was observed that for elevations lower than 4800 m asl on Baishui glacier, there was no snow cover area on glacier's surface during the summer, so those ILAIs remained exposed throughout the summer (Niu et al, 2017b).…”

Section: Carbonaceous Compound Flux and Glacial Retreatmentioning

confidence: 99%

Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau

Niu

Kang

et al. 2018

Tellus B: Chemical and Physical Meteorology

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Favorable climatic regime for maintaining the present-day geometry of the Gregoriev Glacier, Inner Tien Shan

Cited by 50 publications

References 23 publications

Glacier characteristics and changes in the Sary-Jaz River Basin (Central Tien Shan, Kyrgyzstan) – 1990–2010

Glacier characteristics and changes in the Sary-Jaz River Basin (Central Tien Shan, Kyrgyzstan) – 1990–2010

Glacier and runoff changes in the Rukhk catchment, upper Amu-Darya basin until 2050

Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau

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