globalchange  > 气候减缓与适应
DOI: 10.1002/joc.5226
论文题名:
Regional climate forcing and topographic influence on glacier shrinkage: eastern cordilleras of Peru
作者: Veettil B.K.; Wang S.; Simões J.C.; Ruiz Pereira S.F.; de Souza S.F.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期:2
起始页码: 979
结束页码: 995
语种: 英语
英文关键词: Cordillera Vilcabamba ; glacier retreat ; Peruvian Andes ; tropical glaciers ; Urubamba valley ; wet outer tropics
Scopus关键词: Humidity control ; Shrinkage ; Time series analysis ; Tropics ; Cordillera Vilcabamba ; Glacier retreat ; Peruvian Andes ; Tropical glaciers ; Urubamba valley ; Rain ; climate forcing ; climate variation ; glacier retreat ; mountain region ; regional climate ; satellite data ; shrinkage ; surface area ; topography ; Andes ; Cordillera Oriental [Peru] ; Peru
英文摘要: This study assessed the influence of regional climate variability and topography on surface area changes at glacierized mountain peaks of four eastern tropical Andes cordilleras between 10.5° and 13.5°S, namely, Huaguruncho, Huaytapallana, Urubamba and Vilcabamba, during the period 1985–2015 using satellite data. Time series analysis of three key climate variables (temperature, precipitation and relative humidity) at 500 hPa level was also included. Decreasing trends in precipitation and increasing relative humidity trends were observed at the northern region. Further analysis on mean distribution of wind at 500 hPa level showed significant rising trend southwards during the austral winter. Glacierized surfaces at lower altitudes were shrinking faster than those at high altitudes as expected. However, spatial orientation of glacier retreat was not similar to nearby cordilleras such as Vilcanota and Carabaya excepting for Cordillera Urubamba. Despite the high rate of precipitation due to the humidity transport from the Amazon Basin on the eastern slopes, glaciers on the eastern and north-eastern slopes in the Cordillera Urubamba retreated at a higher rate compared with those glaciers on western and south-western sides. Whether higher retreat on the eastern sides towards the south is controlled by precipitation phase changes (rain or snow) or by increased humidity levels was discussed. Furthermore, there was a predominant snowline altitude (SLA) rising trend varying between 56 and 129 m for the studied glaciers. A sharp rise in SLAs for periods 1995–2000 and 2010–2015 was attested, coinciding with warming trends in the Pacific. The relative stability in observed SLAs between 2000 and 2010 also coincided with cooling trends in the Pacific. © 2017 Royal Meteorological Society
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117094
Appears in Collections:气候减缓与适应

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作者单位: Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province and Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Institute of Arid Meteorology CMA, Lanzhou, China; Centro Polar e Climático, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Instituto de Geografía, Pontificia Universidad Católica de Chile, Santiago, Chile; Centro Estadual de Pesquisas em Sensoriamento Remoto e Meteorologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

Recommended Citation:
Veettil B.K.,Wang S.,Simões J.C.,et al. Regional climate forcing and topographic influence on glacier shrinkage: eastern cordilleras of Peru[J]. International Journal of Climatology,2018-01-01,38(2)
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