Surface mass balance calculation with ground observation in the sub-basin of Larsemann Hills, East Antarctica

IF 1.5 4区地球科学 Q3 ECOLOGY

Polar Science Pub Date : 2023-12-01 DOI:10.1016/j.polar.2023.100981

Surendra Jat, Mohammad Sadiq, Pradeep Kumar, Abhishek Verma, Deepak Y Gajbhiye

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引用次数: 0

Abstract

The study includes ground-based data of surface mass balance calculations to assess the input of climate change on the ice sheet health. The study covers an approximately 471 km² area of the ice sheet that lies in between the Dålk and Polarårboken glaciers, Larsemann Hills, Prince Elizabeth, East Antarctica. Snow accumulation/ablation data is collected from 13 stake networks and 06 single stakes installed on the ice sheet. The monitored area is extrapolated on the basis of elevation and glaciological parameters using ArcGIS 10.8.1. The exposed height and precise locations of stakes have been recorded using DGPS and compared with the preceeding year's datasets. The annual measure accumulation/ablation data is processed in ArcGIS for the estimation of surface mass balance since 2018. The accumulation/ablation rate of the ice sheet is not uniform and influenced by the meteorological parameters i.e. temperature, precipitation and wind speed. The values of net surface mass balance are 0.027 Gt yr⁻¹, 0.088 Gt yr⁻¹, 0.044 Gt yr⁻¹, and 0.026 Gt yr⁻¹ since 2018 to 2021 respectively.

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东南极洲Larsemann Hills次盆地地表物质平衡的地面观测计算

研究包括地表质量平衡计算的地面数据，以评估气候变化对冰原健康的影响。研究覆盖了南极洲东部伊丽莎白王子岛拉尔斯曼丘陵 Dålk 冰川和 Polarårboken 冰川之间约 471 平方公里的冰原区域。从安装在冰原上的 13 个桩网和 06 个单桩收集积雪/烧蚀数据。使用 ArcGIS 10.8.1 根据海拔高度和冰川参数对监测区域进行推断。使用 DGPS 记录了裸露高度和冰桩的精确位置，并与前一年的数据集进行了比较。年度测量累积/消融数据在 ArcGIS 中进行处理，用于估算 2018 年以来的地表质量平衡。冰盖的积聚/消融率并不均匀，受气象参数（即温度、降水和风速）的影响。自 2018 年至 2021 年，地表质量平衡净值分别为 0.027 Gt yr-1、0.088 Gt yr-1、0.044 Gt yr-1 和 0.026 Gt yr-1。

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来源期刊

Polar Science ECOLOGY-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

3.90

自引率

5.60%

发文量

期刊介绍： Polar Science is an international, peer-reviewed quarterly journal. It is dedicated to publishing original research articles for sciences relating to the polar regions of the Earth and other planets. Polar Science aims to cover 15 disciplines which are listed below; they cover most aspects of physical sciences, geosciences and life sciences, together with engineering and social sciences. Articles should attract the interest of broad polar science communities, and not be limited to the interests of those who work under specific research subjects. Polar Science also has an Open Archive whereby published articles are made freely available from ScienceDirect after an embargo period of 24 months from the date of publication. - Space and upper atmosphere physics - Atmospheric science/climatology - Glaciology - Oceanography/sea ice studies - Geology/petrology - Solid earth geophysics/seismology - Marine Earth science - Geomorphology/Cenozoic-Quaternary geology - Meteoritics - Terrestrial biology - Marine biology - Animal ecology - Environment - Polar Engineering - Humanities and social sciences.