| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZGivnK2Y/UuLha |
| Repository | sid.inpe.br/mtc-m17@80/2008/06.18.12.10 (restricted access) |
| Last Update | 2008:06.18.12.10.57 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m17@80/2008/06.18.12.10.59 |
| Metadata Last Update | 2018:06.05.03.30.52 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.1016/j.asr.2008.03.027 |
| ISSN | 0273-1177 |
| Citation Key | SimonichCeme:2008:CoDiLa |
| Title | Sporadic sodium layers and the average vertical distribution of atmospheric sodium: Comparison of different Nas layer strengths  |
| Year | 2008 |
| Month | July |
| Access Date | 2024, Apr. 28 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 149 KiB |
| 2. Context | |
| Author | 1 Simonich, Dale Martin 2 Cemesha, Barclay Robert |
| Resume Identifier | 1 8JMKD3MGP5W/3C9JGT2 |
| Group | 1 DAE-CEA-INPE-MCT-BR 2 DAE-CEA-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Journal | Advances in Space Research |
| Volume | 42 |
| Number | 1 |
| Pages | 229-233 |
| History (UTC) | 2008-06-18 12:10:59 :: simone -> administrator :: 2012-07-13 22:33:06 :: administrator -> simone :: 2008 2013-02-20 15:20:20 :: simone -> administrator :: 2008 2018-06-05 03:30:52 :: administrator -> marciana :: 2008 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | Sporadic sodium Mesospheric sodium LIDAR |
| Abstract | In an earlier study of sporadic sodium layers (Nas) [Simonich, D.M., Clemesha B.R., Batista, P.P. Sporadic layers and the vertical distribution of atmospheric sodium. Adv. Space Res. 35, 19761980, 2005], observed by lidar at São José do Campos (23°S, 46°W) we found that, although individual profiles give the impression that Nas layers involve sodium additional to the normal background layer, there is very little difference between the long-term averages of profiles with and without the presence of Nas. This led us to conclude that Nas layers result from the redistribution of an omnipresent source, rather than an additional source mechanism. We have now extended this study to investigate whether or not the relative magnitude of Nas layers influences this conclusion. To this end we manually characterized all the profiles obtained in the time interval from 1900 to 2200 LT for the years 19932004. This involved registering the upper and lower limits to each Nas layer observed, the height of the peak and the sodium concentration at each of these three points. We then computed average profiles for Nas layers of differing strengths, with strength defined as the concentration at the peak divided by the mean of the concentrations at the upper and lower boundaries. For strengths up to 4 the results confirmed our earlier conclusion but for Nas layer strengths greater than 4 we found a significant difference between the average profiles with and without Nas. For the strong Nas layers both the average abundance and the average peak sodium concentration were about 10% greater than for layers without Nas. This leads to the possibility that a different mechanism might be responsible for very stronger sporadic layers although we do not think this very likely. |
| Area | CEA |
| Arrangement | Sporadic sodium layers... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | sporadic sodium.pdf |
| User Group | administrator simone |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ETL868 |
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Host Collection | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel documentstage e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |