The NO ₂ Flux Conundrum

Abstract

Nitrogen oxide radicals, NO, play an important role in atmospheric processes from acid rain to tropospheric ozone formation. Several large sources and sinks for NOare known, but as [ Lerdau et al. ][1] discuss in their Perspective, the role of vegetation as a sink or source of NOremains controversial. This is an important problem because NOemission processes must be understood to be able to predict future environmental impacts. [1]: http://www.sciencemag.org/cgi/content/full/289/5488/2291