Amery Ice Shelf surface snowmelt detected by ASCAT and Sentinel-1
Amery Ice Shelf surface snowmelt detected by ASCAT and Sentinel-1
复制标题
ASCAT 和 Sentinel-1 检测到阿默里冰架表面融雪
DOI：
10.1080/2150704x.2018.1553317
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发表时间：
2019-02
影响因子：
2.3
通讯作者：
Liu Ruixi
中科院分区：
文献类型：
--
作者：
Zhou Chunxia;Zheng Lei;Sun Qizhen;Liu Ruixi
在Amery冰架（AIS）上发现了广泛的融水运动。在气候变暖的情况下，大量地表融雪会加速冰的流失，危及冰架。利用高级散射仪（ASCAT）研究了AIS系统上的详细融化模式，并利用Sentinel-1合成孔径雷达（SAR）图像绘制的湿雪进行了验证，该图像具有更高的空间分辨率。东部地区融冰季节均大于50 d。相反，除了蓝色冰区外，西部大部分地区只是在几天内偶尔融化。在AIS上发现了两种明显的融雪模式。首先，AIS东侧和西侧夏季相反的升降风向导致AIS东侧较西侧偏暖，导致AIS融雪规模由东向西扩大。其次，在低反照率蓝冰和岩石露头的接地区发现了强烈的融雪。然而，由于地面雷达散射占主导地位，ASCAT未能探测到这些地方的融雪。AIS融化模式是由气象条件和下垫面共同决定的。
ABSTRACT Widespread movement of meltwater has been found on the Amery Ice Shelf (AIS). Intensive surface snowmelt could accelerate ice loss and endanger the ice shelves under climate warming. In this study, the Advanced Scatterometer (ASCAT) was used to study the detailed melt patterns on the AIS, which was confirmed by the wet snow mapped by Sentinel-1 Synthetic Aperture Radar (SAR) images with a much higher spatial resolution. Melt seasons were longer than 50 days in the eastern part of AIS. Conversely, a large proportion of the western AIS only melted occasionally for several days with the exception of blue ice areas. Two obvious snowmelt patterns are found on the AIS. First, the opposing summer katabatic wind directions on the eastern and western sides of the AIS result in a warmer eastern AIS compared with the western side, which leads to the expansion of snowmelt from east to west on the AIS. Second, intense snowmelt was found in the grounding zone with low-albedo blue ice and rock outcrops. However, ASCAT fails to detect snowmelt in these places due to the dominated surface radar scattering. AIS melt patterns are determined by both meteorological conditions and the underlying surface.
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影响因子：
5.2
作者：
F. Rémy;M. Ledroit;J. Minster
通讯作者：
F. Rémy;M. Ledroit;J. Minster
DOI：
10.1109/36.842004
发表时间：
2000-03
期刊：
IEEE Trans. Geosci. Remote. Sens.
影响因子：
--
作者：
T. Nagler;H. Rott
通讯作者：
T. Nagler;H. Rott
影响因子：
1.6
作者：
M. Broeke;G. König‐Langlo;G. Picard;P. K. Munneke;J. Lenaerts
通讯作者：
M. Broeke;G. König‐Langlo;G. Picard;P. K. Munneke;J. Lenaerts
DOI：
10.1002/2017jd026809
发表时间：
2017-11
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
John C. King;A. Kirchgaessner;S. Bevan;A. Elvidge;P. K. Munneke;A. Luckman;A. Orr;I. Renfrew;M. R. Broeke
通讯作者：
John C. King;A. Kirchgaessner;S. Bevan;A. Elvidge;P. K. Munneke;A. Luckman;A. Orr;I. Renfrew;M. R. Broeke
DOI：
--
发表时间：
1971-02
期刊：
Journal of Geophysical Research: Space Physics
影响因子：
--
作者：
A. Edgerton;F. Ruskey;D. Williams;A. Stogryn;G. Poe
通讯作者：
A. Edgerton;F. Ruskey;D. Williams;A. Stogryn;G. Poe