Originally published on
by email@example.com (Sam Carana) at Arctic News
Above image, from the National Institute of Polar Research in Japan, shows Arctic sea ice extent at a record low for the time of year, on July 4, 2021, at 8.4 million km².
Subsequently, the NSIDC also indicated that Arctic sea ice was at record low extent for the time of year, on July 5, 2021, at 8.867 million km² (image above).
Arctic sea ice is getting very thin rapidly, threatening the latent heat tipping point to get crossed soon.
The U.S. Navy animation on the right shows Arctic sea ice thickness (in m) for the 30 days up to July 4, 2021, with eight days of forecasts included.
Sunspots are rising. We’re currently at a low point in the sunspot cycle. As the image on the right shows, the number of sunspots can be expected to rise as we head toward 2026, and temperatures can be expected to rise accordingly. According to James Hansen et al., the variation of solar irradiance from solar minimum to solar maximum is of the order of 0.25 W/m⁻².
National Institute of Polar Research (NIPR) in Japan
The National Snow and Ice Data Center (NSIDC) at the University of Colorado Boulder