Month-to-Month Variability of Autumn Sea Ice in the Barents and Kara Seas and Its Relationship to Winter Air Temperature in China

Figure 6

Composite differences for (a) vertical profiles of the temperature (shaded; unit: °C) in the BK region/NR (30°E–100°E, 75°N–85°N) from September to the following February between selected low DBKI years and high DBKI years in September. (b, c) The same as (a) but for the midlatitude region/SR (30°E–100°E, 40°N–50°N) and the differences between the SR and the NR, respectively. The green dot denotes the values that are statistically significant with significance exceeding 0.1 based on the results of t-tests.