| 1. Identity statement | |
| Reference Type | Conference Abstract (Conference Proceedings) |
| Site | mtc-m16d.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP7W/385P3MP |
| Repository | sid.inpe.br/mtc-m19/2010/08.25.17.41 |
| Metadata Repository | sid.inpe.br/mtc-m19/2010/08.25.17.41.49 |
| Metadata Last Update | 2021:02.10.18.37.08 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| Citation Key | ChristoffersenABCGIKMMRRSSVZ:2010:BaInEc |
| Title | A basin-wide intercomparison of ecosystem land surface models and carbon and water flux observations in Amazonia  |
| Year | 2010 |
| Access Date | 2024, Apr. 24 |
| Secondary Type | PRE CI |
| 2. Context | |
| Author | 1 Christoffersen, B J 2 Araujo, A 3 Baker, I T 4 Costa, M H 5 Goncalves, Luis Gustavo 6 Imbuzeiro, H A 7 Kruijt, B 8 Manzi, A 9 Muza, M 10 Restrepo-Coupe, N 11 da Rocha, H R 12 Sakaguchi, K 13 Saleska, S R 14 Von Randow, Celso 15 Zeng, X |
| Group | 1 2 CPT-CPT-INPE-MCT-BR 3 4 5 DMD-CPT-INPE-MCT-BR 6 7 8 9 10 11 12 13 14 CST-CST-INPE-MCT-BR |
| Affiliation | 1 Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Atmospheric Science, Colorado State University, Fort Collins, CO, USA 4 Meteorologia, Universidade Federal de Vioçsa, Viçosa, Brazil 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Meteorologia, Universidade Federal de Vioçsa, Viçosa, Brazil 7 University of Wageningen, Alterra, Netherlands 8 Instituto Nacional de Pesquisas da Amazonia (INPA), Manaus, Brazil 9 Hydrological Sciences Branch, NASA Goddard Space Flight Center, Greenbelt, MD, USA 10 Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA 11 12 Departamento de Ciências Atmosféricas, Universidade de São Paulo, São Paulo, Brazil 13 Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA 14 Instituto Nacional de Pesquisas Espaciais (INPE) 15 Atmospheric Sciences, University of Arizona, Tucson, AZ, USA |
| Author e-Mail Address | 1 bchristo@email.arizona.edu 2 alessandro.araujo@gmail.com 3 baker@atmos.colostate.edu 4 mhcosta@ufv.br 5 gustavo.goncalves@cptec.inpe.br 6 hewlley@vicosa.ufv.br 7 bart.kruijt@wur.nl 8 manzi@inpa.gov.br 9 mmuza@umd.edu 10 ncoupe@email.arizona.edu 11 humberto@model.iag.usp.br 12 ksa@email.arizona.edu 13 saleska@email.arizona.edu 14 celso.vonrandow@cptec.inpe.br 15 xubin@atmo.arizona.edu |
| Conference Name | The Meeting of the Americas. |
| Conference Location | Foa do Iguaçu, BR |
| Date | 8-12 aug 2010 |
| Publisher | AGU |
| Book Title | Abstracts |
| Tertiary Type | Extended Abstact |
| History (UTC) | 2010-12-01 15:32:20 :: valdirene -> administrator :: 2010 2021-02-10 18:37:08 :: administrator -> valdirene :: 2010 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | biogeochemical cycles processes modeling carbon cycling ecosystems structure dynamics |
| Abstract | The Amazon forest plays an important and complex role in the global water and carbon cycle, and important advances have been made in understanding the underlying processes in recent years. However, reconciling modeled mechanisms with observations across scales remains a challenge. To better address this challenge, we initiated a Model Intercomparison Project for the Large-Scale Biosphere Atmosphere Experiment in Amazonia (LBA-MIP) to integrate modeling and observational studies for improved understanding of Amazon basin water and carbon cycling. Here, we report on further analysis from this project, which uses a network of meteorological observational sites (the BrasilFlux network) in forest and converted lands to drive a suite of land surface ecosystem models that simulate energy, water and CO2 fluxes. We focus here on controls on gross primary photosynthesis (GPP) and evapotranspiration (ET), and in particular on how well models capture the observed diurnal and seasonal cycles across sites. Light, moisture, and phenological controls on GPP and ET were intercompared across models and observations. Available energy as the dominant control on ET across the Amazon basin is best reproduced by those models with high moisture storage capacity, but models were able to accomplish this via different ecohydrological mechanisms. Further, some models which capture observed seasonal cycles in ET predict unrealistic patterns of leaf area index (LAI) and/or overestimate photosynthesis and light use efficiency (LUE). Modeled photosynthesis by many models also remains oversensitive to short-term drought in evergreen seasonally dry forests. This analysis highlights the need to incorporate more realistic soil-root-leaf continuum hydraulics in models and invest in ancillary measurements at flux tower sites (e.g., deep soil moisture profiles, LAI, and litterfall) designed to aid empirical discrimination among different model mechanisms used to match observed seasonal patterns. |
| Area | CST |
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > A basin-wide intercomparison... |
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > COCST > A basin-wide intercomparison... |
| Arrangement 3 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > A basin-wide intercomparison... |
| doc Directory Content | there are no files |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| User Group | valdirene administrator |
| Visibility | shown |
| 5. Allied materials | |
| Mirror Repository | sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53 |
| Next Higher Units | 8JMKD3MGPCW/3EUPEJL 8JMKD3MGPCW/3F3T29H 8JMKD3MGPCW/43SKC35 |
| Host Collection | sid.inpe.br/mtc-m19@80/2009/08.21.17.02 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi e-mailaddress edition editor format isbn issn label lineage mark nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark type url versiontype volume |
| 7. Description control | |
| e-Mail (login) | valdirene |
| update | |