| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | mtc-m16b.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | x6e6X3pFwXQZ3DUS8rS5/BQKKL |
| Repositório | cptec.inpe.br/walmeida/2004/04.22.10.17 |
| Última Atualização | 2004:12.08.02.00.00 (UTC) administrator |
| Repositório de Metadados | cptec.inpe.br/walmeida/2004/04.22.10.17.07 |
| Última Atualização dos Metadados | 2021:02.10.23.11.26 (UTC) administrator |
| Chave Secundária | INPE-11024-PRE/6480 |
| ISSN | 0102-261X |
| Chave de Citação | CeballosBottSouz:2004:SiPhMo |
| Título | A simplified physical model for assessing solar radiation over Brazil using GOES 8 visible imagery  |
| Ano | 2004 |
| Mês | Jan. |
| Data de Acesso | 25 abr. 2024 |
| Tipo Secundário | PRE PN |
| Número de Arquivos | 1 |
| Tamanho | 552 KiB |
| 2. Contextualização | |
| Autor | 1 Ceballos, Juan Carlos 2 Bottino, Marcos Jorge 3 Souza, Jaidete Moneiro de |
| Grupo | 1 DSA-INPE-MCT-BR 2 CPT-INPE-MCT-BR |
| Afiliação | 1 Inst Nacl Pesquisas Espaciais, Ctr Previsao Tempo & Estudios Climat, Div Satelites & Sistemas Ambientais, BR-12630000 Sao Paulo, Brazil |
| Endereço de e-Mail | fabia@cptec.inpe.br |
| Revista | Revista Brasileira de Geofísica |
| Volume | 109 |
| Número | D 2 |
| Páginas | Art. No. D02211 |
| Histórico (UTC) | 2004-12-08 12:11:58 :: Fabia -> administrator :: 2008-06-10 19:50:09 :: administrator -> estagiario :: 2010-05-11 16:52:59 :: estagiario -> banon :: 2010-05-12 13:39:58 :: banon -> administrator :: 2021-02-10 23:11:26 :: administrator -> marciana :: 2004 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Palavras-Chave | solar radiation satellite GOES 8 Brazil atmospheric water-vapor satelite data synthetic atmospheres infrared transmissiom earths atmosphere surface absotion budget parameterization calibration |
| Resumo | Solar radiation assessment by satellite is constrained by physical limitations of imagery and by the accuracy of instantaneous local atmospheric parameters, suggesting that one should use simplified but physically consistent models for operational work. Such a model is presented for use with GOES 8 imagery applied to atmospheres with low aerosol optical depth. Fundamental satellite-derived parameters are reflectance and cloud cover. A classification method applied to a set of images shows that reflectance, usually defined as upper-threshold R-max in algorithms assessing cloud cover, would amount similar to0.465, corresponding to the transition between a cumuliform and a stratiform cloud field. Ozone absorption is limited to the stratosphere. The model considers two spectral broadband intervals for tropospheric radiative transfer: ultraviolet and visible intervals are essentially nonabsorbing and can be processed as a single interval, while near-infrared intervals have negligible atmospheric scattering and very low cloud transmittance. Typical values of CO2 and O-3 content and of precipitable water are considered. A comparison of daily values of modeled mean irradiance with data of three sites (in rural, urban industrial, and urban coastal environments), September-October 2002, exhibits a bias of +5 W m(-2) and a standard deviation of similar to15 W m(-2) (0.4 and 1.3 MJ m(-2) for daily irradiation). A comparison with monthly means from about 80 automatic weather stations (covering a large area throughout the Brazilian territory) still shows a bias generally within +/- 10 W m(-2) and a low standard deviation (<20 W m(-2)), but the bias has a trend in September-December 2002, suggesting an annual cycle of local R-max values. Systematic (mean) errors in partial cloud cover and in nearly clear-sky situations may be enhanced using regional values for atmospheric and surface parameters, such as precipitable water, R-max, and ground reflectance. The larger errors are observed in situations of high aerosol load (especially in regions with industrial activity or forest or agricultural fires). The last case is evident when sites in the Amazonian region or Sao Paulo city are selected. When considering daily values averaged within 2.5&DEG; x 2.5&DEG; cells, the standard error is lower than 20 W m(-2); present results suggest an annual cycle of mean bias ranging from +10 to -10 W m(-2), with an amplitude of -10 W m(-2). These values are close to the proposed requirements of 10 W m(-2) for the mean deviation and 25 W m(-2) for the standard deviation. It is expected that the introduction of a reference grid containing mean values of parameters within a cell could induce a decrease in the standard deviation of mean errors and the correction of their annual cycle. A model adaptation for assessing the effect of high aerosol loads is needed in order to extend improvements to the whole Brazilian area. |
| Área | MET |
| Arranjo 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > A simplified physical... |
| Arranjo 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSA > A simplified physical... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| URL dos dados | http://urlib.net/ibi/x6e6X3pFwXQZ3DUS8rS5/BQKKL |
| URL dos dados zipados | http://urlib.net/zip/x6e6X3pFwXQZ3DUS8rS5/BQKKL |
| Idioma | en |
| Arquivo Alvo | Ceballos_A simplified.pdf |
| Grupo de Usuários | administrator banon |
| Visibilidade | shown |
| Detentor da Cópia | SID/SCD |
| Política de Arquivamento | allowpublisher allowfinaldraft |
| Permissão de Leitura | allow from all |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3EUPEJL 8JMKD3MGPCW/43SRC6S |
| Lista de Itens Citando | sid.inpe.br/bibdigital/2013/10.06.18.03 2 |
| Divulgação | PORTALCAPES; SCIELO. |
| Acervo Hospedeiro | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notas | |
| Campos Vazios | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |