Figure 4
From: Dust Vortex in the Taklimakan Desert by Himawari-8 High Frequency and Resolution Observation

Meteorological variables around the Taklimakan Desert at (a,b) 00 UTC on 30 April, (c,d) 18 UTC on 30 April, and (e,f) 18 UTC on 1 May from the NCEP/NCAR reanalysis data. The upper panels show potential temperatures (colors) and geopotential heights (black solid lines) at 500 hPa. The lower panels show potential temperatures (colors) and wind velocities (vectors) at 850 hPa.