Integrated assessment of approaches to retrieve sea surface height for computing sea ice freeboard a

• 作 者: XianweiWang;YannanKe;JunyuanLiu;KeBai;
• 机 构: School of Geography and Planning Sun Yat-sen University, Guangzhou, China
• 出 处: 2014中国极地科学学术年会
• 发表日期: 2014年期

　　Snow freeboard is the total height of sea ice above the sea surface height (SSH), consisting of the sea ice height above SSH and snow depth over sea ice.It is an essential variable to derive the total sea ice thickness in satellite and airborne laser altimetry, which can only survey the surface height of sea ice (or snow at most situations) relative to the World Geodetic System reference ellipsoid (WGS 84), such as the US NASAs Ice, Cloud and land Elevation Satellite (ICESat) laser altimetry and IceBridge Program Airborne Topographic Mapper (ATM) system.In order to determine the snow freeboard and further to compute sea ice thickness using the ICESat or ATMs elevation, an instantaneous local SSH reference using the same set of ICESat or ATM elevation data must be obtained first.