Fig. 4: Changes in cloud amount due to COVID-19 emissions reductions.
From: Abrupt emissions reductions during COVID-19 contributed to record summer rainfall in China
Spatial distribution of changes in June–July low-level (1000–700 hPa; a, c) and middle-level (700–400 hPa; b, d) cloud amount (%) for Covid_All (a, b) and Covid_Aero (c, d) compared to Baseline. The stippled areas indicate statistically significant differences at the 90% confidence level based on a two-tailed Student’s t-test.
