Arid
DOI10.1002/ppp.1859
Solar Radiation and Air and Ground Temperature Relations in the Cold and Hyper-Arid Quartermain Mountains, McMurdo Dry Valleys of Antarctica
Lacelle, Denis1; Lapalme, Caitlin1; Davila, Alfonso F.2; Pollard, Wayne3; Marinova, Margarita4; Heldmann, Jennifer4; McKay, Christopher P.4
通讯作者Lacelle, Denis
来源期刊PERMAFROST AND PERIGLACIAL PROCESSES
ISSN1045-6740
EISSN1099-1530
出版年2016
卷号27期号:2页码:163-176
英文摘要

This study compares the relations between solar radiation and air and ground temperatures in the Quartermain Mountains of the McMurdo Dry Valleys of Antarctica with those in ice-free Victoria Land and Arctic Canada. The surface offset is near 0 degrees C at all sites in the Quartermain Mountains and other sites in coastal Victoria Land, whereas the thermal offset is near 0 degrees C at shallow ice table depths (<20 cm) and near 1 degrees C for ice tables deeper than the depth of diurnal temperature variation. The surface and thermal offsets in Victoria Land differ markedly from those in Arctic Canada, which are generally characterised by a positive surface offset and a negative thermal offset. These important differences highlight the effects of a lack of vegetation, surface organic layer, snow cover and moisture content in near-surface soils on the direction and magnitude of surface and thermal offsets. Summer ground surface temperatures in the Quartermain Mountains correlate strongly with incoming solar radiation. Based on measured ground surface temperatures and modelled potential incoming solar radiation, two zones with distinct ground surface temperatures are defined in the Quartermain Mountains: (i) perennially cryotic zones (PCZs) characterised by ground surface temperatures always below 0 degrees C; and (ii) seasonally non-cryotic zones (NCZs) characterised by ground surface temperatures > 0 degrees C for at least a few hours. Soils in the PCZs experience water exchange through vapour diffusion, whereas soils in the NCZs contain features associated with liquid water activity, such as increased soil moisture and frozen ponds recharged by snow/glacier meltwater. Copyright (c) 2015 John Wiley & Sons, Ltd.


英文关键词ground temperatures surface offset thermal offset Quartermain Mountains McMurdo Dry Valleys Antarctica
类型Article
语种英语
国家Canada ; USA
收录类别SCI-E
WOS记录号WOS:000378430300002
WOS关键词ACTIVE-LAYER ; PERMAFROST DISTRIBUTION ; SURFACE-TEMPERATURE ; CLIMATE HISTORY ; YUKON-TERRITORY ; MACKENZIE DELTA ; THERMAL OFFSET ; TAYLOR VALLEY ; TREE LINE ; ICE
WOS类目Geography, Physical ; Geology
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/195409
作者单位1.Univ Ottawa, Dept Geog, 60 Univ St, Ottawa, ON K1S 6N5, Canada;
2.SETI Inst, Carl Sagan Ctr, Mountain View, CA USA;
3.McGill Univ, Dept Geog, Montreal, PQ, Canada;
4.NASA, Ames Res Ctr, Moffett Field, CA USA
推荐引用方式
GB/T 7714
Lacelle, Denis,Lapalme, Caitlin,Davila, Alfonso F.,et al. Solar Radiation and Air and Ground Temperature Relations in the Cold and Hyper-Arid Quartermain Mountains, McMurdo Dry Valleys of Antarctica[J],2016,27(2):163-176.
APA Lacelle, Denis.,Lapalme, Caitlin.,Davila, Alfonso F..,Pollard, Wayne.,Marinova, Margarita.,...&McKay, Christopher P..(2016).Solar Radiation and Air and Ground Temperature Relations in the Cold and Hyper-Arid Quartermain Mountains, McMurdo Dry Valleys of Antarctica.PERMAFROST AND PERIGLACIAL PROCESSES,27(2),163-176.
MLA Lacelle, Denis,et al."Solar Radiation and Air and Ground Temperature Relations in the Cold and Hyper-Arid Quartermain Mountains, McMurdo Dry Valleys of Antarctica".PERMAFROST AND PERIGLACIAL PROCESSES 27.2(2016):163-176.
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