Multidecadal Arctic sea ice thickness and volume derived from ice age

摘要: Abstract. Sea ice is a key component of the Arctic climate system, and has impacts on global climate. Ice concentration, thickness, and volume are among most important sea parameters. This study presents a new record thickness volume from 1984 to 2018 based on an existing satellite-derived age product. The relationship between ice first established for every month based on collocated submarine sonar data (1984–2000) and ICESat (2003–2008) empirical growth model. Based this relationship, derived entire time period the weekly product, monthly then calculated. ice-age-based show good agreement in terms bias root-mean-square error with submarine, ICESat, and CryoSat-2 as well CryoSat-2 volume, in February–March October–November. More detailed comparisons with independent Envisat 2003 2010 CPOM, AWI, and NASA GSFC (Goddard Space Flight Center) 2011 low in thickness. The ratios uncertainties mean range 21 % to 29 %. Analysis shows that ice volume exhibits decreasing trend −411  km 3  yr −1 to 2018, stronger than trends other datasets. Of factors affecting the trends, changes contribute more than changes area, contribution at least 80 % changes in November May nearly 50 % August and September, while less 30 % area all months.