Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Dependence of the OH concentration (red line) and the net ozone production rate (P(O3) (blue line) on NO2 calculated with a steady-state model with typical conditions of rural Germany (a), Pearl River Delta (b) and North China Plain (c) and (d). Red and blue circles denote the observed values of OH and P(O3), respectively.
