Breakup of Hudson Bay sea ice as it relates to polar bear movement to land has been about the same since 1999 (about 2 weeks earlier than in the 1980s) and this year is shaping up to be no different: there is still no declining trend in date of sea ice breakup in Western Hudson Bay despite repeated predictions of imminent doom. An especially ‘early’ breakup year would have bears ashore before 15 June. Last year (2019) the first WH bear onshore was caught on film 5 July and problem bears were not recorded onshore in Churchill until the 2nd week of July.
This new estimate for 2018 is a modest 4-6 fold increase over the 10,000 or so bears that existed in the 1960s and after 25 years, a credible increase over the estimate of 25,000 that the PBSG offered in 1993 (Wiig et al. 1995).
However, my new estimate is much larger than the improbable figure of about 26,000 (range 22,000-31,000) offered by PGSG biologists in 2015 (Regehr et al. 2016; Wiig et al. 2015). The scary question is this: what do Arctic residents do if there are actually as many as 58,000?
http://nsidc.org/arcticseaicenews/
Figure 2a. The graph above shows Arctic sea ice extent as of June 1, 2020, along with daily ice extent data for four previous years and the record low year. 2020 is shown in blue, 2019 in green, 2018 in orange, 2017 in brown, 2016 in purple, and 2012 in dashed red. The 1981 to 2010 median is in dark gray. T
Antarctic Sea Ice is at the 1981-2010 average...........no melting trend the last 40 years.
https://nsidc.org/arcticseaicenews/antarctic-daily-image-update/
