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1. Identity statement
Reference TypeJournal Article
Sitemtc-m21b.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34P/3MQNLQ2
Repositorysid.inpe.br/mtc-m21b/2016/11.17.12.00   (restricted access)
Last Update2016:12.28.18.19.39 (UTC) administrator
Metadata Repositorysid.inpe.br/mtc-m21b/2016/11.17.12.00.43
Metadata Last Update2021:03.06.05.21.34 (UTC) administrator
DOI10.3844/ajeassp.2016.484.504
ISSN1941-7020
Citation KeyMartinsGonçPere:2016:ObStWi
TitleObservational study of wind shear in Northeastern Brazil
Year2016
Access Date2024, June 15
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size1992 KiB
2. Context
Author1 Martins, F. R.
2 Gonçalves, André Rodrigues
3 Pereira, Enio Bueno
Resume Identifier1
2
3 8JMKD3MGP5W/3C9JH2E
Group1
2 CST-CST-SPG-INPE-MCTI-GOV-BR
3 CST-CST-INPE-MCTI-GOV-BR
Affiliation1 Universidade Federal de São Paulo (UNIFESP)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
Author e-Mail Address1 fernando.martins@unifesp.br
2 andre.goncalves@inpe.br
3 enio.pereira@inpe.br
JournalAmerican Journal of Engineering and Applied Sciences
Volume9
Number3
Pages484-504
History (UTC)2016-11-17 12:01:05 :: simone -> administrator :: 2016
2021-03-06 05:21:34 :: administrator -> simone :: 2016
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
KeywordsAtmospheric boundary layer
Experimental data
Wind energy
Wind shear
AbstractThe wind energy share is growing fast in Brazil and a better understanding of wind speed vertical profiles is essential for accurate power density estimates. The wind shear is highly variable in space and time, being influenced by surface layer stability. Studies concerning wind vertical profiles may have a significant contribution to the Brazilian energy sector. However, wind observational data are very scarce and most of them were acquired in automated weather stations. This work investigates the wind vertical profile data acquired at a wind mast in a semi-arid region of Brazilian Northeastern region, correlating it to stability conditions of the surface boundary layer, surface roughness and friction velocity. The results indicated that strong winds (>7 m sec−1) overcome the stability effects, allowing a better estimate of roughness length, friction velocity and exponential coefficient. In a second step, the wind speed at 50 m agl. Were estimated from wind measurements at 25 m agl. The wind estimates were compared to observations, showing that exponential and logarithmic approaches were able to simulate wind profile. The exponential approach presented the lowest BIAS for rainy season, but overestimated high wind velocities. Finally, a sensitivity analysis demonstrated how uncertainties on roughness length and exponential coefficient impacts on BIAS deviation and reduce the confidence on wind power density estimates. The results demonstrated the importance in understanding how wind vertical profile is related to atmospheric stability condition in order to get reliable values for the shear parameters from mast observations. It is still more critical if wind database is short-term and when dealing with lower wind speeds.
AreaCST
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4. Conditions of access and use
Languageen
Target Fileenio_study.pdf
User Groupself-uploading-INPE-MCTI-GOV-BR
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Reader Groupadministrator
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Visibilityshown
Read Permissiondeny from all and allow from 150.163
Update Permissionnot transferred
5. Allied materials
Mirror Repositoryurlib.net/www/2011/03.29.20.55
Next Higher Units8JMKD3MGPCW/3F3T29H
8JMKD3MGPCW/449U4PL
Citing Item Listsid.inpe.br/bibdigital/2013/10.19.20.40 5
sid.inpe.br/bibdigital/2021/03.06.05.18 4
sid.inpe.br/mtc-m21/2012/07.13.14.45.21 4
DisseminationPORTALCAPES; SCOPUS.
Host Collectionsid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notes
Empty Fieldsalternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url
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