Unsurprisingly, the global climate in 2021 continued to warm and to experience climate-related disasters. Global air temperature tied 2016 as the warmest year on record. Oceans continued to warm, and marked the warmest year on record. Oceans absorb about 95% of heating from greenhouse gases, and thus have a more consistent increase in temperature.
According to Carbon Brief, CO2 emissions in 2020 fell by about 7% compared to 2019, due to economic cut-backs during the Covid-19 epidemic. Nevertheless, average atmospheric CO2 ended the year at about 413.5 ppm, a rise of about 2.5 ppm over 2019 (ESRL/NOAA). That rate of increase is not significantly different than the previous decade. For reference, pre-industrial levels of CO2 were about 280 ppm.
Alaska had a relatively mild 2020 in terms of climate change, cooler than recent years, with temperatures in the range of temperatures of the 1980, but still warmer than earlier decades. There were fewer climate-related wildfires, and the warm-water "blob" in the Gulf of Alaska did not develop during 2020. Nevertheless, the long-term trajectory of climate change in Alaska is still clear.
Low soil moisture results in dry plants, which cause wildfires to burn hotter and faster. Low soil moisture also causes dead undergrowth, which provides fuel-loading to forests, increasing fire danger.