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1. Identity statement
Reference TypeConference Paper (Conference Proceedings)
Sitemtc-m16b.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Repositorysid.inpe.br/iris@1915/2005/09.08.19.21
Last Update2005:09.08.03.00.00 (UTC) administrator
Metadata Repositorysid.inpe.br/iris@1915/2005/09.08.19.21.44
Metadata Last Update2022:03.26.18.03.42 (UTC) administrator
Secondary KeyINPE-13491-PRE/8704
ISBN0-89553-177-1
Citation KeyMartinsPere:2005:NiLeDu
TitleNight length duration and public illumination
FormatPapel
ProjectCiências atmosféricas: ozônio x radiação
Year2005
Secondary Date20050908
Access Date2024, June 15
Secondary TypePRE CI
Number of Files1
Size267 KiB
2. Context
Author1 Martins, Fernando Ramos
2 Pereira, Enio Bueno
Resume Identifier1
2 8JMKD3MGP5W/3C9JH2E
Group1 DMA-INPE-MCT-BR
2 CPT-INPE-MCT-BR
Affiliation1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
EditorGoswami, D. Y.
Vijayaraghavan, S.
Campbell-howe, R.
e-Mail Addressatus@cptec.inpe.br
Conference NameISES Solar World Congress 2005.
Conference LocationOrlando - Florida
Date6-12 Aug. 2005
PublisherISES
Book TitleProceedings
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 Stagecompleted
Transferable1
Content TypeExternal Contribution
Keywordsnight
illumination
AbstractThe 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.
AreaMET
Arrangement 1urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > Night length duration...
Arrangement 2urlib.net > BDMCI > Fonds > Produção até 2016 > DMA > Night length duration...
doc Directory Contentaccess
source Directory Contentthere are no files
agreement Directory Contentthere are no files
4. Conditions of access and use
data URLhttp://urlib.net/ibi/sid.inpe.br/iris@1915/2005/09.08.19.21
zipped data URLhttp://urlib.net/zip/sid.inpe.br/iris@1915/2005/09.08.19.21
Languageen
Target FileNight length duration and public illumination.pdf
User Groupadministrator
estagiario
fabia
Visibilityshown
Copy HolderSID/SCD
5. Allied materials
Next Higher Units8JMKD3MGPCW/3EUPEJL
8JMKD3MGPCW/46JKC45
Citing Item Listsid.inpe.br/mtc-m21/2012/07.13.14.45.21 4
Host Collectioncptec.inpe.br/walmeida/2003/04.25.17.12
6. Notes
Empty Fieldsarchivingpolicy 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
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