| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3QAT8D5 | |||
| Repository | sid.inpe.br/mtc-m21b/2018/01.04.15.32 (restricted access) | |||
| Last Update | 2018:01.04.15.32.46 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2018/01.04.15.32.46 | |||
| Metadata Last Update | 2021:03.06.05.21.50 (UTC) administrator | |||
| DOI | 10.1016/j.esd.2017.12.001 | |||
| ISSN | 0973-0826 | |||
| Citation Key | LuizMartCostPere:2018:CaSt | |||
| Title | Comparison of methodologies for cloud cover estimation in Brazil: a case study  | |||
| Year | 2018 | |||
| Month | mar. | |||
| Access Date | 2024, May 16 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 457 KiB | |||
| 2. Context | ||||
| Author | 1 Luiz, Eduardo Weide 2 Martins, Fernando Ramos 3 Costa, Rodrigo Santos 4 Pereira, Enio Bueno | |||
| Resume Identifier | 1 2 3 4 8JMKD3MGP5W/3C9JH2E | |||
| Group | 1 CST-CST-SESPG-INPE-MCTIC-GOV-BR 2 3 COCST-COCST-INPE-MCTIC-GOV-BR 4 COCST-COCST-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Universidade Federal de São Paulo (UNIFESP) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 eduardo.luiz@inpe.br 2 3 rodrigo.costa@inpe.br 4 enio.pereira@inpe.br | |||
| Journal | Energy for Sustainable Development | |||
| Volume | 43 | |||
| Pages | 15-22 | |||
| History (UTC) | 2018-01-04 15:33:53 :: simone -> administrator :: 2018 2021-03-06 05:21:50 :: administrator -> simone :: 2018 | |||
| 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 | Cloud cover estimation All-sky camera Satellite Long-wave radiation | |||
| Abstract | Clouds are the major modulator of the shortwave and longwave radiation components of the Earth's energy balance and, as such, help to regulate the planet's temperature. In the energy sector, clouds are a source of instability in the generation of energy using solar technologies. This study aims at comparing three approaches to get cloud cover information in the Southeastern region of Brazil during the period of approximately three months. The first method, assumed as reference, uses all-sky camera pictures for the cloud cover estimation. The other two methodologies use downward longwave radiation with surface meteorological data and geostationary satellite data. Both methods presented good agreement with the camera for clear sky and overcast conditions, with probabilities of detection of 92.8% and 80.7% for the longwave method and 93.3% and 87.6% for the satellite method, respectively. The major problem occurs with the broken-clouds sky scenario, with probabilities of detection above 38%, where each method has its own specificity, such as, longwave emissivity of the atmosphere, spatial resolution and view geometry. The long-wave method has the minor R correlation with the camera (87%) when compared with the satellite method (93%) and requires a daily normalization, which make it not usable for instantaneous measurements. Regarding the satellite method, the most important issue is the spatial resolution, which has the major impact on the broken-clouds sky scenarios. The cloud masking works properly for large clouds with, at least, the size comparable to the satellite image pixel. Furthermore, the method using the all-sky camera also needs to be improved, because it presented some deficiencies, like very bright areas around the sun, sometimes identified as clouds, leading to cloud cover overestimation. | |||
| Area | CST | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > COCST > Comparison of methodologies... | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > CST > Comparison of methodologies... | |||
| 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 | |||
| User Group | self-uploading-INPE-MCTI-GOV-BR simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Linking | Trabalho não Vinculado à Tese/Dissertação | |||
| Mirror Repository | urlib.net/www/2011/03.29.20.55 | |||
| Next Higher Units | 8JMKD3MGPCW/3F3T29H 8JMKD3MGPCW/449U4PL | |||
| Citing Item List | sid.inpe.br/bibdigital/2013/10.19.20.40 3 sid.inpe.br/bibdigital/2021/03.06.05.18 1 sid.inpe.br/mtc-m21/2012/07.13.14.45.21 1 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject targetfile tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||