In addition, users can plot monthly ice extent anomalies, map sea ice concentration anomalies, and display images of trends in sea ice concentration, all for a variety of date, climatology, and trend ranges. The Sea Ice Analysis Tool allows users to analyze monthly-averaged or daily sea ice extent and concentration via interactive maps. You can also access the standard Sea Ice Index data files on the Sea Ice Index Data and Image Archive page.

Monthly sea ice extent, by region ( N_Sea_Ice_Index_Regional_Monthly_Data_G02135_v3.0.xlsx and S_Sea_Ice_Index_Regional_Monthly_Data_G02135_v3.0.xlsx).

Daily sea ice extent, by region ( N_Sea_Ice_Index_Regional_Daily_Data_G02135_v3.0.xlsx and S_Sea_Ice_Index_Regional_Daily_Data_G02135_v3.0.xlsx).

Sea ice extent rates of change ( Sea_Ice_Index_Rates_of_Change_G02135_v3.0.xlsx).

Minimum and maximum extent values and dates for each month and year, with rankings ( Sea_Ice_Index_Min_Max_Rankings_G02135_v3.0.xlsx).

Sea ice extent and area organized by year ( Sea_Ice_Index_Monthly_Data_by_Year_G02135_v3.0.xlsx).

Monthly sea ice average extent and area, and rankings ( Sea_Ice_Index_Monthly_Data_with_Statistics_G02135_v3.0.xlsx).

All daily (single day and five-day trailing average) extent values in one file, updated daily ( Sea_Ice_Index_Daily_Extent_G02135_v3.0.xlsx).

See the “Documentation” tab in each workbook for more description, and links to more information about the workbooks.

These Excel workbooks organize Arctic and Antarctic sea ice data in spreadsheets for ease of analysis.

Sea tools