In summary, after the removal of OVTP, SAH becomes more robust and colder in 70 hPa from June to August, especially in June.
Vertical-latitude cross sections of difference between two experiments along 56[degrees]E in June are showed (Figures 2-4), because the most obvious response of SAH to OVTP happens in 56[degrees]E and 40[degrees]N in June (Figure 1(g)).
Removal of OVTP increasing ozone in 200-30 hPa leads to significant enhancement of radiative heating rate in SAH region in June (Figure 2).
To sum up, removal of OVTP increasing ozone in 200-30 hPa leads to significant enhancement of longwave and shortwave radiative heating rate in SAH region in June, and then enhancement of horizontal divergence resulting from the radiative warming leads to strengthening of SAH influenced by the Coriolis force.
The analysis of radiative heating (Figure 2) suggests that there should be a warmer SAH after the OVTP removal, but the previous analysis indicates that the strengthening region of SAH corresponds to the cooling at 70 hPa (Figures 1(g) and 1(i)).
The local climate effects of OVTP were analyzed by using the CAM5, in which OVTP is removed approximately.
(1) After the removal of OVTP, SAH becomes more robust and colder from June to August, especially in June.