说明：  混合使用GDAL和GMT命令从极地地理空间中心更改要在我的InSAR中使用的高分辨率2米ArcticDEM...，
(using a mix of GDAL and GMT commands to change the high resolution 2meter ArcticDEM from the Polar Geospatial Center to be used in my InSAR time Series analysis)