| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | sid.inpe.br/iris@1915/2005/09.08.19.21 |
| Last Update | 2005:09.08.03.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/iris@1915/2005/09.08.19.21.44 |
| Metadata Last Update | 2022:03.26.18.03.42 (UTC) administrator |
| Secondary Key | INPE-13491-PRE/8704 |
| ISBN | 0-89553-177-1 |
| Citation Key | MartinsPere:2005:NiLeDu |
| Title | Night length duration and public illumination  |
| Format | Papel |
| Project | Ciências atmosféricas: ozônio x radiação |
| Year | 2005 |
| Secondary Date | 20050908 |
| Access Date | 2024, May 15 |
| Secondary Type | PRE CI |
| Number of Files | 1 |
| Size | 267 KiB |
| 2. Context | |
| Author | 1 Martins, Fernando Ramos 2 Pereira, Enio Bueno |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JH2E |
| Group | 1 DMA-INPE-MCT-BR 2 CPT-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Editor | Goswami, D. Y. Vijayaraghavan, S. Campbell-howe, R. |
| e-Mail Address | atus@cptec.inpe.br |
| Conference Name | ISES Solar World Congress 2005. |
| Conference Location | Orlando - Florida |
| Date | 6-12 Aug. 2005 |
| Publisher | ISES |
| Book Title | Proceedings |
| History (UTC) | 2006-02-09 15:51:04 :: fabia -> administrator :: 2008-06-10 21:24:28 :: administrator -> estagiario :: 2010-05-11 16:56:11 :: estagiario -> administrator :: 2022-03-26 18:03:42 :: 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 |
| Keywords | night illumination |
| Abstract | The present work shows the developrnent of an operational methodology to calculate the effective duration of the night by means of estimations of natural sky filumination during twilight. The time interval required for the journey of the Sun between solar elevations associated to given. thresholds of filuminance at dawn and at dusk, can be determined using established astronomical relations and an empirical function relating the clear sky filurninance and the solar elevation angle. Deviations around 1 % was observed when estimated filuminance was compared with ground measurements provided by a calibrated radiometer in clear sky days. The ''night length'' in clear sky days along one year period was calculated by assuming 801ux and 20lux as dusk-down thresholds, respectively. lt was observed deviations up to 2.5 % due to cloud cover influence. From this work it was possible to reduce corntrumity expenses by optimizing the public filumination system. |
| Area | MET |
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > Night length duration... |
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção até 2016 > DMA > Night length duration... |
| 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://mtc-m16b.sid.inpe.br/ibi/sid.inpe.br/iris@1915/2005/09.08.19.21 |
| zipped data URL | http://mtc-m16b.sid.inpe.br/zip/sid.inpe.br/iris@1915/2005/09.08.19.21 |
| Language | en |
| Target File | Night length duration and public illumination.pdf |
| User Group | administrator estagiario fabia |
| Visibility | shown |
| Copy Holder | SID/SCD |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3EUPEJL 8JMKD3MGPCW/46JKC45 |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.45.21 3 |
| Host Collection | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist callnumber copyright creatorhistory descriptionlevel dissemination documentstage doi edition electronicmailaddress identifier issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress publisheraddress readergroup readpermission rightsholder schedulinginformation secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url versiontype volume |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |