Surface roughness is an important parameter in deriving energy balance over the polar ice-sheets and glaciers. In Antarctica, roughness appears as snow patches and is affected by wind transport. It is also influenced by snowfall, snowdrifts, snowmelt, and snow grain size. In this paper, we derive surface roughness using a laser distometer. The roughness measurements were collected during the 32nd Indian Scientific Expedition to Antarctica 2013 (ISEA-32). After removal of all the possible error sources, it is found that around the Indian Antarctic station Bharati (69.41°S, 76.18°E), roughness is in the range of 0.7–1.2 cm. Snowfall and wind introduce fluctuations in surface roughness measurements. Measurements around Maitri (70.76°S, 11.73°E) showed that different ice surfaces have different values of roughness (0.6–1.4 cm), with the minimum roughness in the interior ice sheet surrounded by hummocks. Sastrugi patterns were also captured in the analysis. Backscattering signatures from RADARSAT-2 imagery were examined in conjunction with the roughness measurements.

表面粗糙度是获取极地冰盖和冰川能量平衡的重要参数。在南极洲，粗糙度表现为雪斑，并受到风输送的影响。它还受到降雪、雪堆、融雪和雪粒大小的影响。在本文中，我们使用激光测距仪得出表面粗糙度。粗糙度测量值是在 2013 年第 32 次印度南极洲科学考察 (ISEA-32) 期间收集的。排除所有可能的误差源后，发现印度南极站Bharati（69.41°S，76.18°E）周围的粗糙度在0.7~1.2 cm之间。降雪和风会引起表面粗糙度测量的波动。Maitri（70.76°S，11.73°E）周围的测量表明，不同的冰表面具有不同的粗糙度值（0.6-1.4厘米），其中被小丘包围的内部冰盖的粗糙度最小。分析中还捕获了 Sastrugi 模式。RADARSAT-2 图像的后向散射特征与粗糙度测量一起进行了检查。