Simulation of carbonyl sulfide (COS) to better understand the urban biosphere signal
Villalba, Gara (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Umkehr, Andrew (University of California, Merced. School of Engineering)
Whelan, Mary (University of California, Merced. School of Engineering)
Stinecidpher, James (University of California, Merced. School of Engineering)
Hilton, Timothy (University of California, Merced. School of Engineering)
Gabarrell Durany, Xavier (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Campbell, Elliott (University of California, Merced. School of Engineering)

Date:	2016
Abstract:	We suggest that COS can be used to determine which ecosystem model best represents the biosphere signal. Just like CO₂, COS is taken up by photosynthesis but is not given off in respiration and can thus be used as a trace gas to estimate GPP. We begin with COS surface fluxes provided by SiB and CASA, regridded to lower resolution using NDVI values, for a 9, 3, and 1 km-resolution domain over the Bay Area of San Francisco and part of the San Joaquin Valley. Simulations using the atmospheric model WRF provide the meteorological data, which along with the COS fluxes, are used to run the transport model STEM over a 20-day period in March 2015. Simulations of COS mixing ratio based on the various surface flux models are compared to observed data available from several locations (see abstract B42B-06 by Whelan, M. et al). The model that best represents COS uptake consequently also provides the most accurate simulation of CO₂ biosphere signal, and can be used to estimate fossil fuel CO₂ emissions.
Grants:	European Commission 653950
Note:	AGU és American Geophysical Union
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons en que s'entrega l'obra al domini públic. Podeu copiar, modificar, distribuir l'obra i fer-ne comunicació pública, fins i tot amb finalitat comercial, sense demanar cap mena de permís.
Language:	Anglès
Document:	Pòster de congrés
Subject:	Urban CO2 emissions ; Carbon footprint ; COS ; Urban biosphere-atmosphere interactions
Published in:	AGU Fall Meeting. San Francisco, December: 2016

1 p, 2.5 MB

The record appears in these collections:
Contributions to meetings and congresses > Posters