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Poster (Scientific congresses and symposiums)
Modeling Pacific Northwest carbon and water cycling using CARAIB Dynamic Vegetation Model
Kim, John B; Dury, Marie; Still, Christopher J et al.
2015AGU Fall Meeting 2015
 

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Keywords :
Dynamic Vegetation Model; Pacific Northwest; Carbon; Water
Abstract :
[en] While uncertainties remain regarding projected temperature and precipitation changes, climate warming is already affecting ecosystems in the Pacific Northwest (PNW). Decrease in ecosystem productivity as well as increase in mortality of some plant species induced by drought and disturbance have been reported. Here, we applied the process-based dynamic vegetation model CARAIB to PNW to simulate the response of water and carbon cycling to current and future climate change projections. The vegetation model has already been successfully applied to Europe to simulate plant physiological response to climate change. We calibrated CARAIB to PNW using global Plant Functional Types. For calibration, the model is driven with the gridded surface meteorological dataset UIdaho MACA METDATA with 1/24-degree (~4-km) resolution at a daily time step for the period 1979-2014. The model ability to reproduce the current spatial and temporal variations of carbon stocks and fluxes was evaluated using a variety of available datasets, including eddy covariance and satellite observations. We focused particularly on past severe drought and fire episodes. Then, we simulated future conditions using the UIdaho MACAv2-METDATA dataset, which includes downscaled CMIP5 projections from 28 GCMs for RCP4.5 and RCP8.5. We evaluated the future ecosystem carbon balance resulting from changes in drought frequency as well as in fire risk. We also simulated future productivity and drought-induced mortality of several key PNW tree species.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Kim, John B;  US Forest Service Corvallis
Dury, Marie ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
Still, Christopher J;  Oregon State University
François, Louis  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
Jiang, Yueyang;  Oregon State University
Language :
English
Title :
Modeling Pacific Northwest carbon and water cycling using CARAIB Dynamic Vegetation Model
Publication date :
14 December 2015
Event name :
AGU Fall Meeting 2015
Event organizer :
American Geophysical Union
Event place :
San Francisco, United States
Event date :
du 14 décembre au 18 décembre 2015
Audience :
International
Available on ORBi :
since 25 January 2017

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