| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/3U9RMPH | |||
| Repository | sid.inpe.br/mtc-m21c/2019/10.24.10.55 (restricted access) | |||
| Last Update | 2019:10.24.10.55.44 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2019/10.24.10.55.44 | |||
| Metadata Last Update | 2021:01.02.03.44.21 (UTC) administrator | |||
| DOI | 10.3390/w11091911 | |||
| ISSN | 2073-4441 | |||
| Citation Key | SouzaRRZAGDAM:2019:EvMOAl | |||
| Title | Evaluation of MOD16 algorithm over irrigated rice paddy using flux tower measurements in southern Brazil  | |||
| Year | 2019 | |||
| Month | Sept | |||
| Access Date | 2024, May 19 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 19167 KiB | |||
| 2. Context | ||||
| Author | 1 Souza, Vanessa de Arruda 2 Roberti, Débora Regina 3 Ruhoff, Anderson Luis 4 Zimmer, Tamíres 5 Adamatti, Daniela Santini 6 Gonçalves, Luis Gustavo Gonçalves de 7 Diaz, Marcelo Bortoluzzi 8 Alves, Rita de Cássia Marques 9 Moraes, Osvaldo L. L. de | |||
| ORCID | 1 0000-0002-8518-1271 2 0000-0002-3902-0952 3 0000-0002-3585-2022 | |||
| Group | 1 2 3 4 5 6 DIDMD-CGCPT-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Universidade Federal do Rio Grande do Sul (UFRGS) 2 Universidade Federal de Santa Maria (UFSM) 3 Universidade Federal do Rio Grande do Sul (UFRGS) 4 Universidade Federal de Santa Maria (UFSM) 5 Universidade Federal do Rio Grande do Sul (UFRGS) 6 Instituto Nacional de Pesquisas Espaciais (INPE) 7 Universidade Federal de Santa Maria (UFSM) 8 Universidade Federal do Rio Grande do Sul (UFRGS) 9 Universidade Federal de Santa Maria (UFSM) | |||
| Author e-Mail Address | 1 v.arruda.s@gmail.com 2 debora@ufsm.br 3 4 5 6 luis.goncalves@inpe.br | |||
| Journal | Water | |||
| Volume | 11 | |||
| Number | 9 | |||
| Pages | e1911 | |||
| Secondary Mark | B3_ENGENHARIAS_I | |||
| History (UTC) | 2019-10-24 10:57:07 :: simone -> administrator :: 2019 2021-01-02 03:44:21 :: administrator -> simone :: 2019 | |||
| 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 | evapotranspiration flooded rice paddy irrigation remote sensing MODIS MOD16 algorithm eddy covariance meteorological measurements | |||
| Abstract | Evapotranspiration (ET) is an important component of the hydrological cycle. Understanding the ET process has become of fundamental importance given the scenario of global change and increasing water use, especially in the agricultural sector. Determining ET over large agricultural areas is a limiting factor due to observational data availability. In this regard, remote sensing data has been used to estimate ET. In this study, we evaluated the Moderate-Resolution Imaging Spectroradiometer (MODIS) land surface ET product estimates (hereafter MOD16 ET - MODIS Global Terrestrial Evapotranspiration Product) over two rice paddy areas in Southern Brazil, through the ET measured using the eddy covariance technique (hereafter EC). The energy balance components were evaluated during fallow and flooded seasons showing latent heat flux dominates in both seasons. The results showed that MOD16 ET underestimated EC measurements. Overall, the RMSE (root mean square error) ranged between 13.40 and 16.35 mm 8-day(-1) and percent bias (PBIAS) ranged between -33.7% and -38.7%. We also assessed the ET (measured and estimated) main drivers, with EC yielding higher correlation against observed net radiation (R-n) and global radiation (R-g), followed by air temperature (Temp) and vapor pressure deficit (VPD), whilst MOD16 ET estimates yielded higher correlation against leaf area index (LAI) and fraction of photosynthetically active radiation (fPAR). The MOD16 algorithm was forced with meteorological measurements but the results did not improve as expected, suggesting a low sensitivity to meteorological inputs. Our results indicated when a water layer was present over the soil surface without vegetation (LAI around zero), the largest differences between EC measurements and MOD16 ET were found. In this period, the expected domain of soil evaporation was not observed in MOD16 ET physical processes partition, indicating the algorithm was not able to detect areas with high soil moisture. In general, the MOD16 ET product presented low accuracy when compared against experimental measurements over flooded rice paddy, suggesting more studies are necessary, in order to reduce uncertainties associated to the land cover conditions. | |||
| Area | MET | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > Evaluation of MOD16... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | water-11-01911-v2.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/43SKC35 | |||
| Citing Item List | ||||
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX; SCOPUS. | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||