May 3, 2002 =========================================================================== May 3 Solar Region Number Sequence Changed Again 9998, 9999, 0000, 0001 The latest SEC Solar Region Number is 9936, and is expected to reach 10,000 in the next 60 days. SEC products will continue to use 4-digit region numbers, with leading zeros. The sequencing for Solar Region Numbers will be: 9998, 9999, 0000, 0001,... This is a change from an earlier announcement that the numbers 9999 and 0000 would not be used. =========================================================================== The last 75 Solar Region Summary reports are included in this directory. Issue time: Daily at 0030 UTC It is usually online by 0040 UTC. Period covered: Previous UTC day. Description of the Solar Region Summary: The Solar Region Summary is a daily report, compiled by SEC, about the active solar regions observed during the preceding day. It contains a detailed description of the active regions currently visible on the solar disk. The characteristics for each active region are compiled from approximately half a dozen observatories that report to the SEC in near-real time. The sunspot counts are typically higher than those reported in non-real time by the Sunspot Index Data Center (SIDC), Brussels, Belgium, and the American Association of Variable Star Observers. Available: via SEC Anonymous FTP server sec.noaaa.gov. /pub/latest/SRS.txt --- most recent report /pub/forecasts/SRS --- last 75 reports via SEC Web site: http://sec.noaa.gov/ftpdir/latest/SRS.txt http://sec.noaa.gov/ftpmenu/forecats/SRS.html via email: The "srs" List Server list, see http://sec.noaa.gov/ListServer.html ==================================================== ====== Sample: Joint USAF/NOAA Solar Region Summary SRS Number 249 Issued at 0030Z on 05 Sep 2000 Report compiled from data received at SWO on 04 Sep I. Regions with Sunspots. Locations Valid at 04/2400Z Nmbr Location Lo Area Z LL NN Mag Type 9143 S19W75 047 0000 Axx 00 01 Alpha 9145 S08W50 022 0030 Hsx 02 01 Alpha 9147 N08W22 355 0060 Cao 04 04 Beta 9149 N14W22 354 0220 Eai 14 27 Beta 9151 N09W09 341 0010 Bxo 03 03 Beta 9152 N18E22 310 0020 Hsx 01 01 Alpha 9153 S32W23 355 0020 Cso 06 08 Beta 9154 S19E06 326 0160 Dai 08 27 Beta 9155 S10E18 314 0020 Bxo 05 07 Beta IA. H-alpha Plages without Spots. Locations Valid at 04/2400Z Sep Nmbr Location Lo 9142 N16W76 049 9146 S23W58 031 9148 S18W46 019 9150 N12W01 334 II. Regions Due to Return 05 Sep to 07 Sep Nmbr Lat Lo 9124 S13 233 9125 N28 232 9128 N13 220 9129 S05 206 9135 S11 225 9136 N09 221 ==================================================== ====== Description: Part I. Describes all active regions with sunspot groups: Nmbr: An SESC region number assigned to a sunspot group during its disk passage. Location: Sunspot group location, in heliographic degrees latitude and degrees east or west from central meridian, rotated to 2400 UTC. Lo: Carrington longitude of the group. Area: Total corrected area of the group in millionths of the solar hemisphere. Z: Modified Zurich classification of the group. LL: Longitudinal extent of the group in heliographic degrees. NN: Total number of visible sunspots in the group. Mag Type: Magnetic classification of the group. Part IA. Describes previously numbered active regions which still contain plage but no visible sunspots. Nmbr: SESC region number. Location: Plage region location in heliographic degrees latitude and degrees east or west from central meridian rotated to 2400 UTC. Lo: Carrington longitude of the region. PART II. Active regions that where observed on the previous solar rotation and are due to reappear on the East limb in the next 3 days. Nmbr: SESC region number. Lat: Heliographic degrees latitude of the group on its last disk passage. Lo: Carrington longitude of the group on its last disk passage.