| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZGivnK2Y/UuLJc |
| Repository | sid.inpe.br/mtc-m17@80/2008/06.18.12.33 (restricted access) |
| Last Update | 2008:06.18.12.33.34 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m17@80/2008/06.18.12.33.35 |
| Metadata Last Update | 2018:06.05.03.30.52 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.1007/s11207-008-9184-x |
| ISSN | 0038-0938 1573-093X |
| Citation Key | Kane:2008:LaDeVa |
| Title | Latitude Dependence of the Variations of Sunspot Group Numbers (SGN) and Coronal Mass Ejections (CMEs) in Cycle 23  |
| Year | 2008 |
| Month | June |
| Access Date | 2024, Apr. 28 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 645 KiB |
| 2. Context | |
| Author | Kane, Rajaram Purushotam |
| Group | DGE-CEA-INPE-MCT-BR |
| Affiliation | Instituto Nacional de Pesquisas Espaciais (INPE) |
| Journal | Solar Physics |
| Volume | 249 |
| Number | 2 |
| Pages | 355-367 |
| History (UTC) | 2008-06-18 12:33:35 :: simone -> administrator :: 2012-07-13 22:33:09 :: administrator -> simone :: 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 |
| Abstract | The 12-month running means of the conventional sunspot number Rz, the sunspot group numbers (SGN) and the frequency of occurrence of Coronal Mass Ejections (CMEs) were examined for cycle 23 (1996 2006). For the whole disc, the SGN and Rz plots were almost identical. Hence, SGN could be used as a proxy for Rz, for which latitude data are not available. SGN values were used for 5° latitude belts 0° 5°, 5° 10°, 10° 15°, 15° 20°, 20° 25°, 25° 30° and > 30°, separately in each hemisphere north and south. Roughly, from latitudes 25° 30° N to 20° 25° N, the peaks seem to have occurred later for lower latitudes, from latitudes 20° 25° N to 15° 20° N, the peaks are stagnant or occur slightly earlier, and then from latitudes 15° 20° N to 0° 5° N, the peaks seem to have occurred again later for lower latitudes. Thus, some latitudinal migration is suggested, clearly in the northern hemisphere, not very clearly in the southern hemisphere, first to the equator in 1998, stagnant or slightly poleward in 1999, and then to the equator again from 2000 onwards, the latter reminiscent of the Maunder butterfly diagrams. Similar plots for CME occurrence frequency also showed multiple peaks (two or three) in almost all latitude belts, but the peaks were almost simultaneous at all latitudes, indicating no latitudinal migration. For similar latitude belts, SGN and CME plots were dissimilar in almost all latitude belts except 10° 20° S. The CME plots had in general more peaks than the SGN plots, and the peaks of SGN often did not match with those of CME. In the CME data, it was noticed that whereas the values declined from 2002 to 2003, there was no further decline during 2003 2006 as one would have expected to occur during the declining phase of sunspots, where 2007 is almost a year of sunspot minimum. An inquiry at GSFC-NASA revealed that the person who creates the preliminary list was changed in 2004 and the new person picks out more weak CMEs. Thus a subjectivity (overestimates after 2002) seems to be involved and hence, values obtained before and during 2002 are not directly comparable to values recorded after 2002, except for CMEs with widths exceeding 60°. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > Latitude Dependence of... |
| 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 | latitude dependence.pdf |
| User Group | administrator simone |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft12 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3EU29DP |
| Dissemination | WEBSCI; PORTALCAPES. |
| 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 keywords 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. Description control | |
| e-Mail (login) | marciana |
| update | |