KIT | KIT-Bibliothek | Impressum | Datenschutz

Test of gas phase chemistry mechanisms for a LES model with online coupled chemistry

Renate Forkel, Basit Khan, Sabine Banzhaf, Emmanuele Russo, Farah Kanani-Sühring, Klaus Ketelsen, Mona Kurppa, Björn Maronga,; Matthias Mauder, and Siegfried Raasch

Abstract (englisch):

To accurately simulate dispersion, chemical transformation and removal of air pollutants in the urban canopy layer, fine-scale turbulence-resolving simulations are required that can explicitly resolve building structures and street canyons. Large-Eddy Simulation (LES) models explicitly resolve the dominant scales of turbulence in the atmospheric boundary layer and therefore, have the potential to capture the turbulent motion within street canyons
as well as the observed short term fluctuations of pollutant concentrations. LES models including chemical transformation
of pollutants are so far barely applied for urban air quality studies. Within the joint project MOSAIK (Model-based city planning and application in climate change) a new urban microscale model including gas Phase chemistry and aerosols, PALM-4U, has been developed. The state-of-the-art LES model PALM (Maronga et al,
2015, Geosci. Model Dev., 8, doi:10.5194/gmd-8-2515-2015) is used as core model for PALM-4U. In order to obtain the necessary flexibility in the choice of the chemistry mechanisms the gas-phase chemistry was implemented using the Kinetic PreProcessor KPP. Due to the very high computational demands of an LES-based model, compromises are required with respect to the degree of detail of the gas-phase chemistry mechanisms. ... mehr

Volltext §
DOI: 10.5445/IR/1000089655
Veröffentlicht am 17.01.2019
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Poster
Publikationsdatum 12.04.2018
Sprache Englisch
Identifikator urn:nbn:de:swb:90-896552
KITopen-ID: 1000089655
HGF-Programm 12.02.04 (POF III, LK 01) Urban-Rural Interactions
Veranstaltung European Geosciences Union General Assembly (EGU 2018), Wien, Österreich, 08.04.2018 – 13.04.2018
Projektinformation Stadtklima-A-MOSAIK-TP4 (BMBF, 01LP1601D)
Externe Relationen Siehe auch
Schlagwörter Urban air Quality, PALM-4U, mechanism
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page