Hannover 2003 – wissenschaftliches Programm

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UP: Umweltphysik

UP 3: Atmosphäre: Datenauswertung und Modellierung, Instrumentelles, Laborexperimente – Poster

UP 3.6: Poster

Donnerstag, 27. März 2003, 16:00–18:00, Lichthof

A new method for integrating reaction equations consisting of extremely different reaction rates - application to realistic pollutants in the troposphere — •H. Lustfeld — Forschungszentrum Jülich, IFF, 52425 Jülich

If reaction rates differ by 18 orders of magnitude or more - as it happens with chemical reaction equations for pollutants in the atmosphere - programs simply using double precision are bound to produce erroneous results. I apply a novel scaling procedure that allows application of i) double precision routines ii) fast extrapolation schemes[1] when integrating the ordinary differential equations.

[1] P. Deuflhard, F.A. Bornemann, Numerische Mathematik II, de Gruyter, Berlin 1994