Interactive comment on “Evaluation of a new lightning-produced NOx parameterization for cloud
نویسنده
چکیده
This paper describes a novel parameterization for lightning-produced NOx (LNOx) developed for cloud resolving models (CRM), a topic appropriate for publication in ACP. In addition, sensitivity studies are carried out in large detail to select the most important parameters and to point out which parameter values fit the observations best. Such comprehensive sensitivity studies concerning LNOx parameterization are lacking in the literature and therefore this paper adds valuable knowledge to the LNOx community. The authors give proper credit to related work, however some minor improvements are necessary (see specific comments). Some improvements are also recommended
منابع مشابه
Evaluation of a new lightning-produced NOx parameterization for cloud resolving models and its associated uncertainties
A new parameterization of the lightning-produced NOx has been developed for cloud-resolving models. This parameterization is based on the unique characteristics of identifying which convective cells are capable of producing lightning based on a vertical velocity threshold and estimating the lightning flash rate in each convective cell from the non-precipitation and precipitation ice mass flux p...
متن کاملLNOx parameterization and uncertainties for CRM
Evaluation of a new lightning-produced NOx parameterization for cloud resolving models and its associated uncertainties C. Barthe and M. C. Barth National Center for Atmospheric Research, Boulder, CO, USA now at: Laboratoire d’Aérologie, CNRS/Université Paul Sabatier, Toulouse, France Received: 18 February 2008 – Accepted: 10 March 2008 – Published: 4 April 2008 Correspondence to: C. Barthe (ch...
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This is an interesting model study of the sensitivity of surface ozone to NOx produced by lightning. The conclusion, that on average the contribution is relatively minor, has policy implications because it implies that the background O3 (which cannot be regulated) is not much enhanced by lightning. The paper is suitable for publication, but could benefit by additional discussion of several topics.
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Nitrogen oxides (NOx=NO+NO2) play an important role in tropospheric chemistry, in particular in catalytic ozone production. Lightning provides a natural source of nitrogen oxides, dominating the production in the tropical upper troposphere, with strong impact on tropospheric ozone and the atmosphere’s oxidizing capacity. Recent estimates of lightning produced NOx (LNOx) are of the order of 5 Tg...
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