Community Research and Development Information Service - CORDIS

Abstract

Photochemical models predict species concentration based on a series of physical processes and data describing the status of the domain like the boundary conditions and the emissions. The outcome of recent studies, regarding photochemical formation in large urban environments demonstrated that among the subtle issues to be fully explored is an evaluation of the sensitivity of an atmospheric chemical model due to perturbations. The magnitude of the perturbations should reflect the inherent inaccuracies in the observed data.

This work examines the effects in the modelled concentrations through variations of the boundary conditions and of emissions. This study was carried out with the Tangent Linear Model (TLM) of the 3D Air Quality model CAMx (Comprehensive Air-Quality Model with eXtensions). The TLM of CAMx is obtained by utilizing the automatic differentiation tool ADIFOR (Automatic Differentiation in FORtran). The TLM has been extensively used for sensitivity studies in Meteorology. .

Additional information

Authors: KIOUTSIOUKIS I A, JRC, IPSC, Ispra (IT);SKOULOUDIS A N, JRC, IES, Ispra (IT)
Bibliographic Reference: An oral report given at: The 25th NATO/CCMS International Technical Meeting on Air Pollution Modelling and its Applications, Louvain-la-Neuve (BE), 15-19 October 2001
Record Number: 200114017 / Last updated on: 2001-11-14
Category: PUBLICATION
Original language: en
Available languages: en