Table 2.

Ozone production and depletion flux via NOx photochemical reactions under low an high NOx levels

Reaction	Rate constant (molecule−1 cm3 s−1)	Flux (molecule cm−3 s−1)
		Befor lockdown (high NOx level)	After lockdown (low NOx level)
NO2 + hv ≥ NO + O(3P)	5.0 × 10−3	3.28 × 109	6.05 × 108
O(3p) + O2 ≥ O3	1.5 × 10−14	4.04 × 1012	4.04 × 1012
NO + O3 ≥ NO2 + O2	2.0 × 10−14	1.51 × 1023	6.28 × 1022
NO2 + O3 ≥ NO3 + O2	3.2 × 10−17	8.05 × 10−6	4.03 × 10−6
Net flux	-	1.51 × 1023	6.28 × 1022