| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m12.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZ3r59YD6/JzEyG |
| Repository | sid.inpe.br/iris@1912/2005/12.26.16.30 |
| Last Update | 2011:08.31.13.29.37 (UTC) administrator |
| Metadata Repository | sid.inpe.br/iris@1912/2005/12.26.16.30.09 |
| Metadata Last Update | 2018:06.05.00.40.34 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.1029/2004JG000005 |
| ISSN | 0148-0227 2156-2202 |
| Citation Key | SennaCostShim:2005:CoFiMe |
| Title | Fraction of photosynthetically active radiation absorbed by Amazon tropical forest: A comparison of field measurements, modeling, and remote sensing  |
| Year | 2005 |
| Access Date | 2024, May 18 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 1072 KiB |
| 2. Context | |
| Author | 1 Senna, Mônica C. A. 2 Costa, Marcos H. 3 Shimabukuro, Yosio Edemir |
| Resume Identifier | 1 2 3 8JMKD3MGP5W/3C9JJCQ |
| Group | 1 DSR-INPE-MCT-BR 2 3 DSR-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais, Divisão de Sensoriamento Remoto (INPE, DSR), Department of Agricultural and Environmental Engineering, Federal University of Viçosa (UFV), Viçosa, Minas Gerais, Brazil |
| Journal | Journal of Geophysical Research |
| Volume | 110 |
| Number | G01008 |
| History (UTC) | 2006-01-05 16:14:32 :: sergio -> administrator :: 2006-09-03 21:43:15 :: administrator -> sergio :: 2007-04-23 21:07:08 :: sergio -> administrator :: 2010-05-12 04:09:37 :: administrator -> marciana :: 2011-11-03 11:14:22 :: marciana -> administrator :: 2005 2018-06-05 00:40:34 :: administrator -> marciana :: 2005 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | tropical forest Amazonia FAPAR IBIS MODIS |
| Abstract | The fraction of absorbed photosynthetically active radiation (FAPAR) is a vegetation biophysical variable that characterizes energy, mass, and momentum exchanges and is used extensively in models that represent the transfer of energy, carbon, water, and the biogeochemistry of terrestrial ecosystems. This paper compares three estimates of FAPAR by an Amazonian tropical rain forest. In the Tapajós National Forest, near Santarém, state of Pará, Brazil, FAPAR is estimated based on field measurements, modeling (using IBIS which simulates the fluxes in the soil-vegetation-atmosphere system considering two vegetation layers) and remotely sensed Moderate Resolution Imaging Spectroradiometer (MODIS) monthly FAPAR product, which has not been validated for a tropical rain forest yet. FAPAR based on field observations is calculated from incoming and reflected PAR measurements taken above the canopy, and downward PAR at a 15 m height, corrected to be representative of the entire canopy, obtaining an annual mean value of 0.91. FAPAR simulated by the Integrated Biosphere Simulator (IBIS) is 0.76, while the annual average FAPAR estimated by MODIS is 0.85. If we consider that MODIS estimates include only PAR absorbed by leaves, the remote sensing estimates are very close to field measurements corrected to include only the absorption by leaves (0.87); hence we conclude that the MODIS FAPAR product for the tropical rain forest is reliable to be used in future studies. However, model estimates of FAPAR for the tropical forest are low, and adjustments on the algorithm used to calculate the absorbed radiation by the canopy are necessary. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Fraction of photosynthetically... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/6qtX3pFwXQZ3r59YD6/JzEyG |
| zipped data URL | http://urlib.net/zip/6qtX3pFwXQZ3r59YD6/JzEyG |
| Language | en |
| Target File | 2004JG000005-1.pdf |
| User Group | administrator marciana sergio |
| Visibility | shown |
| Archiving Policy | denypublisher6 allowfinaldraft |
| Read Permission | allow from all |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ER446E |
| Dissemination | WEBSCI; AGU; MGA; COMPENDEX. |
| Host Collection | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository month nextedition notes orcid pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |