Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028857 |
Air Temperature Characteristics, Distribution, and Impact on Modeled Ablation for the South Patagonia Icefield | |
Bravo, C.1; Quincey, D. J.1; Ross, A. N.2; Rivera, A.3,4; Brock, B.5; Miles, E.1; Silva, A.3 | |
2019-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:2页码:907-925 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Chile |
英文摘要 | The glaciers of Patagonia are the largest in South America and are shrinking rapidly, raising concerns about their contribution to sea level rise in the face of ongoing climatic change. However, modeling studies forecasting future glacier recession are limited by the scarcity of measured on-glacier air temperatures and thus tend to use spatially and temporally constant lapse rates. This study presents 9months of air temperature observations. The network consists of five automatic weather stations and three on-glacier air temperature sensors installed on the South Patagonia Icefield along a transect at 48 degrees 45S. Observed lapse rates are, overall, steeper on the east (-0.0072 degrees C/m) compared to the west (-0.0055 degrees C/m) and vary between the lower section (tongue, ablation zone) and the upper section (plateau, accumulation zone) of the glaciers. Warmer off-glacier temperatures are found in the east compared to the west for similar elevations. However, on-glacier observations suggest that the glacier cooling effect is higher in the east compared to the west. Through application of distributed temperature-index and point-scale energy balance models we show that modeled ablation rates vary by up to 60%, depending on the air temperature extrapolation method applied, and that melt is overestimated and sublimation is underestimated if the glacier cooling effect is not included in the distributed air temperature data. These results can improve current and future modeling efforts of the energy and mass balance of the whole South Patagonia Icefield. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458845300027 |
WOS关键词 | GLACIAR PERITO MORENO ; MASS-BALANCE ; LAPSE RATES ; MELT ; SENSITIVITY ; VARIABILITY ; PRECIPITATION ; ANDES ; FRAMEWORK ; SATELLITE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32951 |
专题 | 气候变化 |
作者单位 | 1.Univ Leeds, Sch Geog, Leeds, W Yorkshire, England; 2.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England; 3.Ctr Estudios Cient, Valdivia, Chile; 4.Univ Chile, Dept Geog, Santiago, Chile; 5.Northumbria Univ, Dept Geog & Environm Sci, Newcastle Upon Tyne, Tyne & Wear, England |
推荐引用方式 GB/T 7714 | Bravo, C.,Quincey, D. J.,Ross, A. N.,et al. Air Temperature Characteristics, Distribution, and Impact on Modeled Ablation for the South Patagonia Icefield[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(2):907-925. |
APA | Bravo, C..,Quincey, D. J..,Ross, A. N..,Rivera, A..,Brock, B..,...&Silva, A..(2019).Air Temperature Characteristics, Distribution, and Impact on Modeled Ablation for the South Patagonia Icefield.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(2),907-925. |
MLA | Bravo, C.,et al."Air Temperature Characteristics, Distribution, and Impact on Modeled Ablation for the South Patagonia Icefield".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.2(2019):907-925. |
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