2 ms·

https://climatedataguide.ucar.edu/climate-data/sea-ice-thickness-data-sets-overview-comparison-table https://climatedataguide.ucar.edu/climate-data/sea-ice-thic

https://climatedataguide.ucar.edu/climate-data/sea-ice-thickness-data-sets-overview-comparison-table https://climatedataguide.ucar.edu/climate-data/sea-ice-thick... "Major limitations in the spatial and temporal coverage of sea ice thickness, which prevent a consistent record of long-term change and variability". https://climatedataguide.ucar.edu/sites/default/files/styles/node_lightbox_display/public/key_figures/climate_data_set/NSIDC_Kwok2015.png https://climatedataguide.ucar.edu/sites/default/files/styles... Graph illustrates uptick in ice thickness, a reverse in the trend over the past ~20 years. Graph does not include even more recent data, unfortunately (it continues going up).

ceejayoz 7y ago
Again, I'm not sure why you're citing these sources, which appear to directly contradict your apparent argument. First link: "Reconstructions using numerous observational sources show a 65% decline in annual mean sea ice thickness in the central Arctic since the 1970s." Second link shows a single year's datapoint being higher than the trend line. Given this, I'm not inclined to just accept your assertion that the Cryosat-2 data continues to climb. I did some Googling to find the more recent data from ESA and http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts_large=1&ts_area_or_point=all&basin_selected=0&show_basin_thickness=0&year=2018&season=Autumn&imonth=11&thk_period=28 http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts... indicates it hasn't. edit: Sorry, the above chart is sea ice thickness. Your chart shows sea ice volume. ESA makes volume available, too. Same issue - the ongoing data doesn't show the 2014/2015 spike continuing. 2016-present appears to return to the recent average. http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts_large=1&ts_area_or_point=all&basin_selected=0&show_basin_thickness=0&thk_period=0&select_thk_vol=select_vol&year=2018&imonth=11&season=Autumn http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts...

ceejayoz 7y ago

Again, I'm not sure why you're citing these sources, which appear to directly contradict your apparent argument. First link: "Reconstructions using numerous observational sources show a 65% decline in annual mean sea ice thickness in the central Arctic since the 1970s." Second link shows a single year's datapoint being higher than the trend line. Given this, I'm not inclined to just accept your assertion that the Cryosat-2 data continues to climb. I did some Googling to find the more recent data from ESA and http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts_large=1&ts_area_or_point=all&basin_selected=0&show_basin_thickness=0&year=2018&season=Autumn&imonth=11&thk_period=28 http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts... indicates it hasn't. edit: Sorry, the above chart is sea ice thickness. Your chart shows sea ice volume. ESA makes volume available, too. Same issue - the ongoing data doesn't show the 2014/2015 spike continuing. 2016-present appears to return to the recent average. http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts_large=1&ts_area_or_point=all&basin_selected=0&show_basin_thickness=0&thk_period=0&select_thk_vol=select_vol&year=2018&imonth=11&season=Autumn http://www.cpom.ucl.ac.uk/csopr/seaice.html?show_cell_thk_ts...