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Simulating carbon exchange using a regional atmospheric model coupled to an advanced land-surface model
- Source :
- Biogeosciences, Vol 7, Iss 8, Pp 2397-2417 (2010), Biogeosciences, 8 (2010): 2397–2417. doi:10.5194/bg-7-2397-2010, info:cnr-pdr/source/autori:Ter Maat HW, Hutjes RWA, Miglietta F, Gioli B, Bosveld FC, Vermeulen AT, Fritsch H/titolo:Simulating carbon exchange using a regional atmospheric model coupled to an advanced land-surface model/doi:10.5194%2Fbg-7-2397-2010/rivista:Biogeosciences (Print)/anno:2010/pagina_da:2397/pagina_a:2417/intervallo_pagine:2397–2417/volume:8, Biogeosciences 7 (2010) 8, Biogeosciences, 7(8), 2397-2417
- Publication Year :
- 2010
- Publisher :
- ECN, 2010.
-
Abstract
- A large scale mismatch exists between our understanding and quantification of ecosystem atmosphere exchange of carbon dioxide at local scale and continental scales. This paper will focus on the carbon exchange on the regional scale to address the following 5 question: What are the main controlling factors determining atmospheric carbon dioxide content at a regional scale? We use the Regional Atmospheric Modelling System (RAMS), coupled with a land surface scheme simulating carbon, heat and momentum fluxes (SWAPS-C), and including also sub models for urban and marine fluxes, which in principle include the main controlling mechanisms and capture the relevant dynamics 10 of the system. To validate the model, observations are used which were taken during an intensive observational campaign in the central Netherlands in summer 2002. These included flux-site observations, vertical profiles at tall towers and spatial fluxes of various variables taken by aircraft. The coupled regional model (RAMS-SWAPS-C) generally does a good job in sim15 ulating results close to reality. The validation of the model demonstrates that surface fluxes of heat, water and CO2 are reasonably well simulated. The comparison against aircraft data shows that the regional meteorology is captured by the model. Comparing spatially explicit simulated and observed fluxes we conclude that in general simulated latent heat fluxes are underestimated by the model to the observations which exhibit 20 large standard deviation for all flights. Sensitivity experiments demonstrated the relevance of the urban emissions of carbon dioxide for the carbon balance in this particular region. The same test also show the relation between uncertainties in surface fluxes and those in atmospheric concentrations.
- Subjects :
- land-surface
rain-forest
sea
sxchange
lcsh:Life
Eddy covariance
Atmospheric model
Atmospheric sciences
landgebruik
Atmosphere
complex terrain
dioxide
models
lcsh:QH540-549.5
Latent heat
simulating
greenhouse gases
Alterra - Centre for Water and Climate
Shortwave radiation
modellen
Physics::Atmospheric and Oceanic Physics
Ecology, Evolution, Behavior and Systematics
Earth-Surface Processes
Carbon dioxide in Earth's atmosphere
model
lcsh:QE1-996.5
carbon dioxide
land use
boundary-layer
valencia coastal region
mesoscale circulations
fluxes
lcsh:Geology
lcsh:QH501-531
gas-exchange
kooldioxide
Greenhouse gas
Climatology
co2
Environmental science
Spatial variability
lcsh:Ecology
broeikasgassen
Alterra - Centrum Water en Klimaat
Subjects
Details
- Language :
- English
- ISSN :
- 17264170 and 17264189
- Database :
- OpenAIRE
- Journal :
- Biogeosciences, Vol 7, Iss 8, Pp 2397-2417 (2010), Biogeosciences, 8 (2010): 2397–2417. doi:10.5194/bg-7-2397-2010, info:cnr-pdr/source/autori:Ter Maat HW, Hutjes RWA, Miglietta F, Gioli B, Bosveld FC, Vermeulen AT, Fritsch H/titolo:Simulating carbon exchange using a regional atmospheric model coupled to an advanced land-surface model/doi:10.5194%2Fbg-7-2397-2010/rivista:Biogeosciences (Print)/anno:2010/pagina_da:2397/pagina_a:2417/intervallo_pagine:2397–2417/volume:8, Biogeosciences 7 (2010) 8, Biogeosciences, 7(8), 2397-2417
- Accession number :
- edsair.doi.dedup.....6b9302b0e1154234425fe1fa852dfc30